ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY PUBLISHED IN CELEBRATION OF THE Fiktieth Anniversary of the Society's Foundation. 1830-1880 ’ BOSTON: - PUBLISHED BY THE SOCIETY. 1880. - . — + rs E = ' « x a 4 i] ‘ = ” = « i z= 7 i - ra a MUSEUM OF THE BOSTON SOCIETY OF NATURAL HISTORY. ERECTED /863. ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY PUBLISHED IN CELEBRATION OF THE Fittieth Aniwibersary of the Society’s foundation. 1830-1880 BOSTON: PUBLISHED BY THE SOCIETY. 1880. PUBLISHING COMMITTEE. SamuEL H. ScuppEr, Epwarp BurGEss, SamuEL L. ABgor, AupHeus Hyatt, J. A, ALLEN. PRESS OF A. A. KINGMAN. BOSTON SOCIETY OF NATURAL HISTORY. BERKELEY ST. TABLE OF CONTENTS. SOCIETY ANNALS. List of the Present Officers of the Society. (1-page.) Prefatory Note, with extracts from the minutes of the annual meeting, May 5th, 1880. (3 pages.) Historical Sketch of the Boston Society of Natural History, with a notice of the Linnaean Society of New England which preceded it ; including biographical notices of all the Society’s prominent past mem- bers, officers and benefactors. By Tuomas T. Bouvn. (250 pages, six floor plans, view of the Museum, and portraits of Benjamin D. Greene, George B. Emerson, Amos Binney, John C. Warren, Jeffries Wyman, Thomas T. Bouvé, Augustus A. Gould, D. Humphreys Storer and William J. Walker.) SCIENTIFIC PAPERS. N.S. Smarter. Propositions concerning the Classification of Lavas considered with reference to the Circumstances of their Extrusion. (15 pages.) Aupneus Hyarr. Genesis and Evolution of the species of Planorbis at Steinheim. (114 pages, ten plates on nine sheets, one plate of sections ; map and two sections in text.) Samurt H. Scupprr. The Devonian Insects of New Brunswick; with a note on the Geological Re- lations of the Fossil Insects from the Devonian of New Brunswick, by Principal J. W. Dawson, LL.D., F.R.S., ete. (41 pages, one plate.) W.G. Fartow. The Gymnosporangia ( Cedar-apples) of the United States. (388 pages, two plates.) Tueopore Lyman. A new Structural Feature, hitherto unknown among Echinodermata, found in Deep-Sea Ophiurans. (12 pages, two plates.) W.K. Brooks. The Development of the Squid, Loligo Pealii Lesueur, (22 pages, three plates.) A. §. Packanrp, Jr. Zhe Anatomy, Histology and Embryology of Limulus Polyphemus. (45 pages, seven plates.) Epwarp Bureess. Contributions to the Anatomy of the Milk-Weed Butterfly, Danais Archippus Fabr. (16 pages, two plates; one cut in text.) SamuEn F, Crarke. The Development of a Double-headed Vertebrate. (6 pages, one plate.) Cartes Sepawick Minor. Studies on the Tongue of Reptiles and Birds. (20 pages, one plate; six cuts in text.) : Epwarp S. Morsr. On the Identity of the Ascending Process of the Astragalus in Birds with the In- termedium. (10 pages, one plate; twelve cuts in text.) Lucien Carr. The Crania of New England Indians. (10 pages, two plates.) Wituuam James. The Feeling of Effort. (32 pages.) LIST OF THE PRESENT OFFICERS OF THE SOCIETY. President. SamueL H. Scupper. Vice-Presidents. JoHN CUMMINGS, FreperickK W. Putnam. Custodian. AupHEUS Hyatt. Honorary Secretary. SAMUEL L. ABBOT. Secretary. EpwarpD BuRGESS. Treasurer. CHARLES W. SCUDDER. Librarian. Epwarp BurGEss. Committees on Departments of the Museum. MINERALS. RADIATES, CRUSTACEANS AND WORMS. Tuomas T. Bouve, H. A. Hacen, R. H. Ricuarps, ALEXANDER AGASSIZ. M. E. Wapsworrts. : MOLLUSKS. GEOLOGY. Epwarp 8S. Morse, Wim H. Nizzs, J. Henry Brake. G. Freperic Wricut, INSECTS. PALAEONTOLOGY. SamueEt H. ScupprEr, Tuomas T. Bouve, Epwarp Burcess, N. S. SHALER. A. §. Packarp, JR. BOTANY. FISHES AND REPTILES. JoHN CuMMINGS, F. W. Purnam, Cuartes J. SPRAGUE, Turopore Lyman, J. Amory Lowe tt. S. W. Garman. MICROSCOPY. BIRDS. SamvuEL WELLS, ; J. A. ALLEN, R. C. GREENLFAF, SamuEL Cazor. B. Joy JE¥Frriss. MAMMALS. COMPARATIVE ANATOMY. J. A. ALLEN, Tuomas Dwiecut, E. L. Marx, W. F. Wuirney. Georce L. GoopaLe. ERRATA. In the table of contents: Fifth paragraph, for ten plates on nine sheets read nine plates on eight sheets. In the Historical Sketch : Page 216, 22d line, read Charles W. Eliot. &“ 6th “ from bottom, for from all read from that of all. « 247, 12th “ after with insert the chief causes of. In Mr. Scudder’s memoir : Page 33, line 9 from the bottom, for confidentially read confidently. In Dr. Farlow’s memoir: Page 3, note 2, for Ustitaginées read Ustilaginées. “ 6, 9th line from top, for Huromyces read Huuromyces. COP iamloblinc: 4c “ & hymeniferus read hymeniferous. « 9, 5th “ “ bottom, for varies read vary. “11,4th “ “ top, for Berke read Berk. cout EE iG. LT readifigs 16. 18, Wath« “ “.* Gasperrini read Gasparrini. « 20, 6th & 10th lines from top, for thuyoides read thyoides. “ 21, 7th line from top, for gymnosporangium read Gymnosporangium. ce DAeEStm ss (ts “« « Juminata read luminatum. eS OGhese |S “« « tubercules read tubercles. : * 31,28d © “© “ nseudoperidis read pseudoperidiis. «39, 19th“ “ « before present insert the. “« 33, 9th © “ © for #. lacerta read FR. lacerata. Owing to the absence of the writer during the printing of this article a considerable part of the proof could not be submitted to him for revision. In Prof.. Morse’s memoir: Page 7, 17th line from top, for fore read hind. In Prof. James’ memoir : Page 12, 10th line from bottom, for right read left. ems Olin 1" sc “ left read right. “« 30, 8th “ “ top, for work read no work. La oO Oo expressed my sincere regret that we can no longer be led in this work by the President whose devotion we have been only too pleased to acknowledge by our ballots for ten years past; but as long as his life is spared to us we shall have his sympathy and wise advice, (v) R. C. GREENLFAF, DAMUEL—Onpu4s B. Joy JEFFRIES. MAMMALS. COMPARATIVE ANATOMY. J. A. ALLEN, Tuomas Dwicut, EK. L. Marx, W. F. Wuairney. Grorce L. GooparE. PREFATORY NOTE. Tur Boston Society or Natura History, founded in 1830 by a few earnest men, has this year celebrated its fiftieth anniversary. Its growth during ‘this period has been so considerable, it has gained for itself so firm a hold upon the esteem of our citi- zens, and its relations to the higher education of the people have been so significant, that it has been thought fitting to signalize this anniversary by the issue of a special volume of scientific papers, preceded by a detailed history of the Society, the preparation of which was entrusted to the President. Included in the history will be found the proceedings of the jubilee meeting, held on the twenty-eighth of April last. At the annual meeting, held a few days later, the President, Thomas T. Bouvé, Esq., declined a reélection ; having been an officer of the Society for nearly forty and its President for ten years, - no man living is so thoroughly identified as he with its life and interests during the most eventful period of its history; and it is therefore fitting that this statement should be followed by the tribute paid at the annual meeting to his untiring devotion to the interests of the Society, not only during his Presidency, but for nearly the whole period of its existence. Boston, Dec. 15, 1880. PUBLISHING COMMITTEE. Extract from the minutes of the Annual Meeting, May 5, 1880. Mr. S. H. Scudder, on assuming the presidential chair, discussed the mission of the So- ciety, closing his remarks with the following words: At a previous meeting I have already expressed my sincere regret that we can no longer be led in this work by the President whose devotion we have been only too pleased to acknowledge by our ballots for ten years past; but as long as his life is spared to us we shall have his sympathy and wise advice, (v) and we may be sure that in all the work the Society undertakes, it will have no stronger friend than he. Mr. John Cummings thereupon offered the following vote: — “Tn consideration of the fact that Mr. Bouvé has declined to be a candidate for the first office of this Society, the members desire to express their grateful acknowledgment of the Jong and valuable service he has rendered as President, and their cordial thanks for his arduous labors, unremitted devotion, prudent and successful administration ; nor can they part from him in this official capacity without the additional expression of their warm personal esteem.” No one ever associated with Mr. Bouvé, added Mr. Cummings, who did not feel himself drawn to him by the strongest and tenderest ties. In his own experience he had never met a man with so much devotion to any cause as Mr. Bouvé had shown for the welfare of the Society. Mr. Cummings’s remarks were warmly applauded and the motion was seconded by Prof. A. Hyatt, who said, in respect to Mr. Bouvé’s administration, that although from the first the present policy of the Society had met the severest criticism and sometimes disapproba- tion from the intimate friends and advisers of the President, he had yet been able to keep his judgment unwarped and to consider those ideas, which were new to him, purely on their own merits. It is not too much to say that the Society’s aims, which we have heard so highly praised in this anniversary year, could not have been so developed without Mr. Bouvé’s constant support. The feelings expressed by Mr. Cummings will be echoed in the heart of every officer of the Society, for we have always found our President full of kindness and consideration, as well as just and sound in judgment. Mr. F. W. Putnam said he could not allow this opportunity to pass without a few words, which at best would be but a feeble expression of his feelings; for in addition to a long and cherished friendship that every year had strengthened, his official ties to Mr. Bouvé were double, and both were broken by his resignation, since, as might not be remembered by all present, the President of the Society was ea-officio a member of the board of trus- tees of the Peabody Museum at Cambridge; and while, as Curator of that Museum, he welcomed his friend, the new President of the Society, he was very sorry to lose one who had been so long connected with the Museum and had ever been ready to give his kindly aid in furtherance of its objects. Prof. W. H. Niles spoke of the large amount of work in the care and arrangement of the collections which Mr. Bouvé had accomplished during the term of his presidency. Most of this has been done after the business duties of the day, and how frequently he has remained until called home by some one, none but his family know. When alterations in the building were going on, he habitually inspected the entire premises after all others had gone, to see that all was left in safety. The Society has steadily progressed in its usefulness and scientific position during the administration of Mr. Bouvé, and he Vil now leaves the presidential chair with nothing to regret, and with the esteem and friend- ship of every member. Day by day, and year after year, he has brought here a large heart, full of geniality and goodness, and has been in himself a source of happiness to those who have known him as President. It would be a pleasure to reciprocate, in some small measure at least, his long-continued kindness, and this could be best done by each member’s trying to make the Society so pleasant for Mr. Bouvé, that, as a source of his future happiness, it should be second only to his home and his family. In conclusion, Mr. Niles said he did not doubt that each member present would like to express in some spe- cial way his personal respect and honor for him who was the dear friend of all and one of the best benefactors the Society ever had; and he hoped they might do so by rising as they voted for the adoption of the resolution proposed by Mr. Cummings. The Chair accordingly called for a standing vote and the resolution was unanimously adopted. t. 1830. ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY. 1880. HISTORICAL SKETCH OF THE BOSTON SOCIETY OF NATURAL HISTORY; WITH A NOTICE OF THE LINNAAN SOCIETY, WHICH PRECEDED IT. By THOMAS T. BOUVE. BOSTON: PUBLISHED BY THE SOCIETY. 1880. nO CHARLES JAMES SPRAGUE and JAMES CLARKE WHITE, Companions with me for years in laborious work upon the collections of the Society, these pages are dedicated, with the great respect and kind regards of Tur Avutuor. HistoricAL SKETCH OF THE Boston Society or NaturAL History: witu A Notice OF THE LINN#HAN SOCIETY, WHICH PRECEDED IT. By Tuomas T. Bovuvé. No history of our Society can well be given without some brief account of the attempts previous to its formation to interest the public in the study of Natural History. Before any organized efforts were made to this end but few publications even had appeared on the subject, and these are cited from remarks made by Dr. A. A. Gould in a sketch of the Linnean Society, which appeared in the Proceedings of the Boston Society of Natural History in 1863.1. The most valuable of them was one by the Rey. Manassah Cutler, entitled “Account of some of the Vegetable Productions naturally growing in this part of America, botanically arranged.” Another was a pamphlet published by the cele- brated Dr. Benj. Waterhouse, who seems to have brought with him from Holland “some general notions of Systematic Natural History.” The pamphlet was entitled, “Heads of a Course of Lectures on Natural History,” Cambridge, 1810, in which he distributes the lower animals under the heads of Ornithology, Amphibiology, Ichthyology, Insects and Vermes; which latter he mentioned as “outskirts of Animated Nature extending to the confines of the vegetable world.” In a note he said he would “extend, contract or omit parts of his programme to suit his audience.” As Dr. Gould quaintly remarks, it does not appear whether he ever had any audience at all. In addition to these publications some articles of a practical character were written by Prof. W. D. Peck, who occupied the Chair of Natural History at Harvard College from 1805 to 1822. They appeared in agricultural papers, and the most important of them purported to give a natural history of the slug worm and the canker worm. Dr. Gould, in referring to the Professor’s work at Cambridge, says, ‘““He gave such instruction as was demanded, which was very little.” Harris's Natural History of the Bible, Mather’s Magnalia, Thacher’s Dispensatory, with some treatises on the medicinal properties of herbs, and a few other papers of little importance, complete the publications referred to. Tue LINN@AN SOCIETY. The time at length arrived for an organized effort to excite some interest on the part of the public in natural science, and the men were not wanting. On the 8th of December, 1814, there met at the house of Dr. Jacob Bigelow, a number of gentlemen, then prominent in the community, some of whom afterwards became eminent in their several professions, if not in natural science. They were, besides Dr. Bigelow, Wm. S. Shaw, Octavius Pickering, Dr. Walter Channing, Ezekiel D. Cushing, La Fayette Perkins, Dr. Geo. Hayward, Nathaniel Tucker, J. Freeman Dana, John W. Webster, and 1 Vol. 1x, 335. 4 HISTORICAL SKETCH OF THE Dr. John Ware. Dr. Channing was chosen Chairman, and Dr. Bigelow Secretary, and a committee, composed of Dr. Bigelow, Mr. Pickering, and Dr. Hayward, was appointed to draft a Constitution for the Society, which they called the New England Society for the Promotion of Natural History. Two days after they met again by adjournment, and the Constitution reported by the Committee was read, discussed, and adopted. Among its provisions are some which may interest readers of the present day. The Ist article provides that the Society shall consist of Immediate, Associate, Honorary, and Corresponding Members. The 2d, that the officers shall consist of a President chosen from the Honorary or Immediate Members; Vice President, Corresponding Secretary, Recording Secretary, Treasurer, and Cabinet Keeper, who shall be chosen from the Immediate Members. The 11th, that there shall be a meeting once a week. The 12th, that any Immediate Member who shall unnecessarily be absent three times successively, shall forfeit his membership. The 14th, that all specimens placed in the Museum shall be the property of the Society, and that no others shall have a place, except by express vote. The 17th, that no person shall be chosen an Immediate Member except by unanimous vote of all present; other members may be elected by a two-thirds vote, but none without nomination at a previous meeting. The 18th, that there shall be a Standing Committee of five members, chosen annually, to provide a suitable room for the collection, employ one or more persons for service, and draw on the treasurer for payment of the expenses thereby incurred, under such restrictions as the Society may from time to time make. The 19th, that each Immediate Member shall pay $5 annually. The 20th, that every Immediate Member absent from a stated meeting without excuse, shall be fined fifty cents. Such articles have been quoted of the Constitution adopted as tend to show the animus of the members. Who can say that they were not thoroughly in earnest ? In subsequent proceedings of the Society it appears that fines were collected, undoubt- edly for absence without excuse ; but there is no recorded instance of a member forfeit- ing his membership by unnecessary absence. . It is not easy to understand the principle or the policy which dictated the selection in all cases of persons on whom was conferred Honorary, Corresponding or Associate Mem- bership. In numerous cases individuals were elected to the former who cannot be sup- posed to have manifested much interest in natural science, and who too were residents of Boston. They were distinguished perhaps as Doctors of Divinity, or as Doctors of Medi- cine, but neither then nor afterwards were known as Naturalists. Among the Correspond- ing Members are found the names of several residing in the immediate vicinity of Boston, as Cambridge and Charlestown; which seems singular, for the perils of a ferriage across the Charles, which at an earlier date might have made these ports appear distant, were no longer to be incurred; good bridges then as now uniting the populations. But this is not all, some of the Corresponding Members were citizens of Boston itself. From the records it seems that the number of Immediate Members at first, or soon after the formation of the Society, was about 20; of the Honorary, 19; of the Corres- BOSTON SOCIETY OF NATURAL HISTORY. 5 ponding, 68, and of the Associate, 24. It is not clear what privileges these last had as members of the Society, except the implied one that they were not subject to assessment. In the list of the early Corresponding Members, it is pleasant to find the name of Dr. William J. Walker, to whose great bounty the Boston Society of Natural History is indebted for its present standing among the leading scientific societies of the world, if not for its very existence; for there is much reason for the opinion that had the Society con- tinued dependent on the voluntary labors of its members as would necessarily have been the case without his help, it would have met the fate of the majority of the societies of natural history, which have been formed under apparently favorable auspices, have flourished for a time, and then faded out of existence. But more of this when his large benefactions to the Boston Society of Natural History are mentioned in the course of this history. It may be a matter of interest to the reader to have presented here some of the names of members connected with the Society, particularly of such as afterwards distinguished themselves in their several callings, or at a subsequent period became active members of the Boston Society of Natural History. Among them may be found : — As Immediate Members : Dr. Jacob Bigelow. Francis C. Gray. Dr. John Randall. Dr. Walter Channing. Dr. Geo. Hayward. Dr. John Ware. Benj. A. Gould. Octavius Pickering. Dr. John W. Webster. As Honorary Members: Hon. John Davis. Rev. James Freeman. Rev. John Prince. Hon. John Lowell. Prof. Wm. D. Peck. Rev. J. Lathrop. Hon. Christopher Gore. Rev. Manassah Cutler. Rey. J. T. Kirkland. Dr. John Jeffries. Dr. John Warren. As Corresponding Members : Nathaniel Bowditch. Prof. Benj. Silliman. S. G. Perkins. Josiah Quincy. Robert Hare. Dr. E. Hale. Dr. W. J. Walker. Prof. Parker Cleaveland. Thomas H. Perkins. Benjamin Pierce. As Associate Members : Joseph Tilden. Rev. Wm. Ellery Channing. Dr. Geo. C. Shattuck. Dr. J. C. Warren. Wm. Minot. Rev. Edward Everett. Dr. James Jackson. Richard Sullivan. Nathan Hale. Francis Boott. The first officers elected were John Davis, LL.D., President. Wn. S. Shaw, Vice-President. Jacob Bigelow, Corresponding Secretary. George Hayward, Recording Secretary. Octavius Pickering, Treasurer. John W. Webster, Cabinet-Iceper. On December 29th, in accordance with a vote previously passed, the several members having specimens to present to the Society towards the formation of a museum brought them forward, and it is recorded that a considerable collection was made. 6 HISTORICAL SKETCH OF THE At a meeting held January 14th it appears that much dissatisfaction was expressed at the name of the Society, and it was therefore voted that each member should propose in writing at the next meeting such name as he judged the most suitable. When the Society again met, on the 21st of January, 1815, the members, after due consideration, unani- mously Voted, That the Society shall be called the Linnzean Society of New England. To understand the spirit and do justice to the labors of the active members of this Society, let us look a little into their proceedings of the first year. February 4th it was voted that each member shall,if possible, prepare some animal in the course of the week and present it to the Society at the next meeting. In the record of a following meeting it is stated that a considerable number of animals were presented to the Society, all of which had been prepared by the members in the course of the week. Whether these animals were of the dimensions of elephants or mice is not stated. At the same meeting the Recording Secretary was requested to draw up some popular directions for the preservation of specimens in Natural History, to be given to masters of vessels and others, and to report at the next meeting; and at the next meeting a circular letter was presented containing such directions. This was ordered to be printed. The subjects brought before the members did not always pertain to natural history. At a meeting on March 4th a paper by the Hon. John Lowell was read, “ On the.resemblance between certain customs of the modern Italians and ancient Romans.” It was voted to copy it into the common place book of the Society. Besides the weekly meeting it was decided to hold once a quarter a general meeting, to which should be invited the Honorary, Corresponding and Associate Members, and at each such quarterly meeting a paper by some person appointed at the preceding meeting should be read on some subject connected with the pursuits of the Society. The first of these quarterly meetings was held on the 21st of June, and Judge Davis delivered what the record of that date states to have been ‘an elegant address on the advantages of natural history and the objects of the institution.” At the regular meeting held a few days afterwards, Dr. Randall, as the text expresses it, was unanimously chosen to perform at the next quarterly meeting. It was also voted that on the next Wednesday, the 28th of June, the day appointed by the Constitution for the Annual Meeting, the Society should dine together at Richards’ in Brookline. In accordance with this vote, the Immediate Members met at Brookline and after trans- acting the business of electing officers for the year, they dined together, the record states, in company with the Hon. John Lowell and Hon. Josiah Quincy. This combination of scientific pursuits with feasting is not mentioned as a peculiarity of the members of this pioneer society, and even in later days it has not been found disagreeable or unprofitable. In some degree these Annual Meetings partook of the character of what has been more recently called in some of our societies “ Field Days’’, for they were held at some selected place in the country, and a portion of the day was employed in obtaining specimens. Thus, at the first meeting, it is mentioned that “after dinner the members divided them- selves into several parties for the purpose of making an excursion in search of specimens BOSTON SOCIETY OF NATURAL HISTORY. 7 in the several branches of natural history.” Towards evening it is further said: “they returned to town after having passed a delightful day.” Presentations of objects of natural history are frequently mentioned as having been made to the Society during the year, and sometimes those of other character, as for instance a likeness of Mr. Roscoe, of Liverpool, presented by Mr. Francis Boott. In June, the Society was the recipient of two living tigers, presented by Capt. Stewart, of the United States frigate Constitution. Whether it was more fortunate in receiving or losing them, it is now impossible to say ; certain it is, they were by some means lost, and a Mr. Savage was held accountable ; for in February, 1818, the record states that “a settlement was effected with Mr. Savage for the loss of the Brazilian tigers, which were presented to the Society by Capt. Stewart of the Navy,” and it subsequently appears that the treasurer was authorized to pay out of the money received from Mr. Savage, rent due by the Society. At the second Quarterly Meeting of the year, held in September, Dr. Randall read an interesting paper on the history and medical properties of the native plant Triostewm perfoliatum. In October, the Museum was arranged into several departments, and members were allotted to take charge of them, as follows : First division of Minerals. . Dr. Randall. Amphibia. : : . Mr. Gould. Second “ ¢ & . Dr. Channing. First division of Insects . Mr. Pickering. Avenel = Ge & . Mr. Dana, Sen. Second “ ¢ ss a MirDanas dirs Plants . ; 6 5 . Mr. Tucker. Adoyygel ec ¢€ » Mr. Codman. Mammalia. , : . Dr. Bigelow. Shells. 0 P Fi . Mr. Gray. Birds. 0 . : . Dr. Cushing. Zoophytes, &e. é . Dr. Hayward. Fishes . 3 5 ‘ . Dr. Ware. In November, a paper was read by Dr. Goodwin of Sandwich, on tadpoles found there In December, Dr. Channing was requested to make up, from the duplicates, a box of minerals, and send to France, for exchange, and the Vice President was requested to use his exertions to procure a moose for the Society. Professor Cleaveland of Bowdoin College, a distinguished mineralogist, had been invited to deliver the quarterly address in December, but unable to visit Boston, was obliged to decline, and no address was delivered. It has been thought well in view of the lesson to be derived from the experience of this Society, to give at some length an account of the proceedings of this first year of its existence with the intention of being more brief in mention of subsequent proceedings. Enough is known of the character and ability of the members of the Society, and enough has been shown of their devoted zeal in its service, to satisfy all that if ultimate success did not crown their efforts, the fault was not so much in them, as in the fact, that more was undertaken for accomplishment through voluntary labor, than can ever be expected from men however zealous, who are engaged in professional or business life. The second year of the Linnzan Society was marked by the same manifestation of zeal on the part of the members as was shown during the first. From the assessment of the members enough was raised to pay for some professional labor, and an artist, so called, was hired, who probably could mount specimens; as in January, a committee was appointed to 8 HISTORICAL SKETCH OF THE procure animals, that he might find employment in preparmg them. In February the room in which the cabinet was kept beg unsatisfactory, one was hired over Boylston Hall, where the collection was placed, and where meetings were subsequently held. The Museum of the Society was opened to the public every Saturday afternoon. In all the months of this year valuable donations of specimens were received. Among others specified may be mentioned a living bear, presented by Commodore Chauncy of the navy; a miscellaneous collection of objects of natural history from Bowdoin College; a valuable collection of birds from Africa; besides cases of insects, handsome minerals and beautiful shells and corals, from other donors. The meetings were well attended, and there appeared throughout the year no loss of interest on the part of the members. The annual meeting was held at Fresh Pond Hotel, Cambridge, and the attendance was general on the part of the members. Judge Davis presided, and the day being pleasant, all found great enjoyment in excursions and in amusements until dinner, which they partook of together, returnmg to town in the evening. In August Dr. Bigelow gave an interesting account of an expedition, undertaken by himself, and the other members of the Society, for the purpose of visiting the White Mountains in New Hampshire. Being equipped, as he states, with proper instruments, the height of the mountains was ascertained more accurately than it ever had been. His estimate of the height is not mentioned. Particular attention, the record states, was given to the mineral, animal, and vegetable specimens that were found in the mountains, and the whole paper abounded with curious facts and ingenious observations. All who in subsequent years had the pleasure of intercourse with Dr. Bigelow, need not be assured of the interesting character of the paper presented by him to those who were favored by hearing it. It would, undoubtedly, be read with great interest now, notwithstanding the general knowledge prevailing relative to the region mentioned. The Society increased in numbers during the year, and there appeared no loss of interest on the part of the members. Save a few lines found in the report of one of the meetings in September, everything denoted great prosperity. But these few lines are enough to suggest to those of a later day, conversant with the history of natural history societies, the probable decay at a not distant time, of that zeal and interest so marked at this period. They may be found in the report of a committee appointed to obtain from the Legislature an act of incorporation. This report declares it imexpedient to petition at present, provided our expenses can be defrayed until we are united with the Atheneum. This is the first expression in the records implying what, alas, the history of most natural history societies shows to be inevitable when sustained only by the voluntary labors and assessments of members, and dependent on the uncertain contributions of friends; lack of adequate means for the care and presérvation of the rapidly augmenting collections and consequent disaffection. We shall later see, that notwithstanding the strenuous exertions of the members, and abundant success in collecting specimens, an increasing uneasiness manifested in a disposition to unite with another society and thus sacrifice its own identity ; or, failing this, to dispose of its collections in a way that would not have been considered for a moment at an earlier period. BOSTON SOCIETY OF NATURAL HISTORY. 9 The time, however, has not arrived to dwell upon anything not agreeable in the record of the devoted workers of the Society. The Recording Secretary appears to have been quite elated at the progress made, for he writes in October: The zeal and activity of the members seem to be unabated, and if the collection continues to increase for a few years in the same proportion, it will surpass every establishment of the kind in the United States, and almost rival those of Europe. The close of the year shows no less activity. In December a valuable paper was read by Dr. John Ware. Large and valuable specimens were set up under the superintendence of the committees, and arrangements were made, as the record states, for labelling all the birds, beasts and fishes belonging to the cabinet. A committee was also appointed to see what could be done in relation to furnishing permanent apartments for the collection of the Society, which implies, probably, that.it had increased to a size rendering more room necessary for its accommodation. 1817. Judging by the records of this year’s doings alone, it might be thought that all was well with the Society, and that its continued existence and progress were secure. Donations continued to pour in, many of a very valuable character. Among them may be noticed a fine American elk, which is mentioned as one of the most interesting and valuable animals which our country affords. There seems certainly to have been no fears-of calamity, for in the early part of the year a fine specimen of a female moose, from Maine, was purchased, and the hope is expressed that another year a male may be obtained, together with a reindeer, which the Secretary states will make complete the collection of the deer of the United States. Arrangements were also made with Capt. Waterman to procure specimens of natural history from the coast of Africa. The annual meeting was held at Brookline, where the members, as usual, sat down to dinner. Valuable papers were presented, one on the mineralogy and geology of Cambridge and its vicinity, by Mr. 8. L. Dana, Jr., containing, it is stated, ‘ unquestionably more accurate information on the subjects upon which it treats than has ever before been communicated ;’ one on the luminous appearance of the sea, translated from the Transactions of the Swedish Academy by Judge Davis; and one on the medical properties of Phytolacca decandra, by Dr. Hayward. It is distinctly mentioned by the Secretary, in June, that the usual business of collecting and preserving specimens had been regularly attended to. On the 18th of June, Dr. Channing delivered an address. Ata previous meeting of the Society it had been voted to call a public meeting of the members, each of whom should have the privilege of inviting others to be present on this occasion, which was made one of great interest, many of the leading men of the state and city being present. Among them, the Governor, Lieutenant Governor, Council, members of the Senate, and many ladies. The whole company were surprised at the size of the collection, and highly pleased with its general order and neatness. At twelve o’clock the address was given, which was upon the importance of literature and science, particularly to the people of New England. The claims of the Society to the patronage of the public were urged with great force and ingenuity. A sketch of the progress of the institution from its first foundation was given, and statements made showing the rapid growth of the cabinet. 10 HISTORICAL SKETCH OF THE The interest excited by this meeting gave the Society reason to believe that the importance of its work was fully appreciated, and that the public already felt disposed to protect and patronize it. It is sad to think how soon the hopes excited by the feeling manifested at this meeting were doomed to fade away. Soon after this meeting, wonderful stories were circulated concerning a strange marine animal, said to have been seen in the harbor of Gloucester, and a special meeting of the Society was called for the purpose of taking measures to obtain information. Judge Davis, Dr. Bigelow, and Mr. Gray, were constituted a committee to write to, and have depositions taken of, all who had seen the animal. The committee reported, in September, that they had no doubt of the existence of an animal of extraordinary appearance and enormous dimensions, as there were many credible witnesses. They expressed the hope of getting more information soon. In October, a very. full report was made upon what was now designated as the sea serpent, and an account was also given of a small one, probably, the record says, of a “spawn,” that had been taken at the water’s edge. The committee were of the opinion that these animals were of a genus wholly unknown to naturalists, and they designated them under the name of Scoliophis, from the singular curvatures of the spine, by which they possessed a vertical motion. To this they added the specific name Atlanticus.! It is a subject of great regret, the Secretary wrote, that all the efforts that were made to take the great serpent proved wholly ineffectual, notwithstanding the zeal and activity of his pursuers. 1818. We have thus far traced the history of this Society from its formation, have dwelt upon the evidences of its rapid progress, and have had brought before us accounts of its great acquisitions, through which it had become possessed of a collection which, in the language of its Secretary, seemed likely to surpass any one of like character im this country and even rival the great collections of Europe. Henceforth we shall find evidence of declining vigor on the part of the Society as such, notwithstanding great struggles on the part of many of its members to sustain it and give it renewed activity; we shall see the interest in its meetings rapidly wane, and its valuable cabinet becoming ruined for the want of proper care; we shall see that even the hope for continued existence is giving place to utter despair, foreboding dissolution. In January a committee was appointed to make propositions to the trustees of the Athenzum for a union of the two institutions, and if this could not be effected, to report what measures should be taken for the preservation of the cabinet. Meetings were held in the succeeding months, but not with so much regularity as here- tofore. At one of the meetings a valuable paper was read by Dr. J. W. Webster on the mineralogical character of the Island of St. Nicholas, which he had lately visited. This seems to have been the only paper brought forward during the year. The Immediate Members-‘made an excursion up the Middlesex Canal, upon invitation of Mr. J. L. Sulli- van, and they dined together at Woburn, — their last dinner as a society. 1 Report of a Committee of the Linnzan Society of New 52 pp. See remarks by Dr. Jeffries Wyman, Proc. Bost. England relative to a large marine animal, supposed to bea —_— Soe. Nat. Hist., rx, 245. Serpent, seen near Cape Ann, Mass. Boston, 1817. 8vo. BOSTON SOCIETY OF NATURAL HISTORY. Tut: 1819. During this year the meetings were not held with any regularity. Attempts were made to take charge of and preserve the specimens, but without success, and the members had the mortification of seeing a museum going to decay that had cost them so much labor and expense ; but it seemed inevitable. They were mostly engaged in profes- sional pursuits, and of course could not give their personal services to the preservation of the collection; and the funds of the society were not sufficient to hire any one perma- nently. 1820. Things remained in this condition until March, 1820, when a meeting was called for the purpose of considering the expediency of disposing of the collection. It was then voted, that if one hundred dollars per year could be obtained for ten years, the members would renew their efforts to preserve the institution. In April it was reported that enough had been subscribed, and more, for the preser- vation of the collection. This seemed for a time to revive hope and inspire interest. Amendments were made to the Constitution, and a committee was appointed to attend to the preservation of the collection. A number of new members were elected. In May, committees were chosen to examine and report upon the state of. each depart- ment of the collection, and they were expected to attend at the hall of the museum every Saturday, from 3 to 6 o’clock. A committee was also appointed to petition the legisla- ture for an act of incorporation ; evidence certainly of renewed hope. The Society became incorporated, and the first meeting under the act was held in June. Dr. Jacob Bigelow was elected President. In August a specimen of a seal and several minerals were presented, and in October there were many minerals added to the collection. In December a movement was made towards the formation of a library, and in the following March (1821) rules and regula- tions were adopted for it. Notwithstanding, however, these signs of activity on the part of the Society, the records afford sufficient evidence of declining interest. The meetings were not well attended. Immediate Members resigned as such, and were made Associate Mem- bers, mainly for the reason that they could not attend to the duties of the former. 1822. In the early part of this year there yet appeared no evidence of yielding to the inevitable, and specimens, among them the bones of a camel, were received for the cab- inet with satisfaction and thanks. ‘In August, however, we find that a committee had been appointed to consider upon the future disposal of the cabinet, which reported : “ That it appears, by the resignation and non-attendance of members, that it has become burdensome to individuals of the Society to support its meetings and collections as they have hitherto done; that it is expedient, therefore, to suspend its meetings and give up the room of the Society, and place the collection, or such part of it as can be preserved, in some place where it will occasion no further expense to the Society or its contributors ; that a committee be appointed to remove it from its present location and place it in the hands of any other person or persons who will afford suitable rooms for its reception, the preference being always given to a scientific corporate body; that the present funds of the Society be devoted to removing, securing and enlarging the collection, at the discretion of the committee.” This committee was made permanent, with directions to appoint a Secretary, and to call a meeting of the Society on the application of three members. 12 HISTORICAL SKETCH OF THE The expression that the funds of the Society be devoted to enlarging as well as securing the collection denotes the existence of a vague hope at least of renovation. The election of officers was made, as in former years. 1823. In March of this year a meeting was called by the Society, and the committee appointed in August of the previous year relative to the collection reported, that they had offered the whole of it to the Boston Athenzeum, upon condition that suitable rooms should be provided for its reception and preservation, but that the Trustees had declined to accept it; that they had subsequently offered it to the Corporation of Harvard College or to the Board of Visitors of the Massachusetts Professorship of Natural History, who jointly accepted the offer, agreeing to erect a building for the collection and to grant to the mem- bers of the Society free access to the collection and to the Botanic Garden. This report after consideration was acted upon by a vote that the conditions on which the Corporation of Harvard College and the Board of Visitors of the Massachusetts Professorship of Natural History, propose to accept the cabinet of this Society, be acceded to; and the committee were requested to make the transfer. This was done, and the balance of cash in the hands of the Treasurer, $264.29, was also included in the transfer. A vote was finally passed that all subscriptions and assessments not collected be can- celled. Thus came to an end the Linnzan Society so far as exertion for the furtherance of the objects of its existence was concerned. It yet remained a corporate body, and years after, upon the formation of the Boston Society of Natural History, it was once more called together by its Secretary for the purpose of recovering if possible from Harvard College such part of the collection as yet remained worth removing, in order to present it to the new society. This reclamation was made on the ground that the College had failed entirely to comply with the conditions made at the time of the transfer; no building having been erected, and proper care not having been given for its preservation as a collection for promoting the study of natural history. In the sketch which follows of the doings of the Boston Society of Natural History, it will be found that very little of the really extensive and valuable collection of the Linnzan Society came into its possess- ion, though all that remained of it was given up by the College. It had gone to ruin for want of care, as hundreds of earlier collections had before it, and as hundreds will hereafter, if the views which the history of the Linnean Society are calculated to incul- cate do not prevail in their aims and purposes. That these views may be presented and dwelt upon has been the motive of giving so full an account of the doings of this Society, as its experience so well illustrates their truth. As stated in an earlier page, if success did not crown the efforts made by the members to build up a permanent institution, the fault was not so much in them, as in the fact that they undertook more than it was possible for men engaged in professional or business life to accomplish, however zealous and devoted they might be. The views referred to and which it is thought desirable to inculcate, may be given in a few paragraphs. They are not new, for the same ideas may be found expressed in an address delivered before the Linnzan Society of London, in 1867, by its President, George Bentham, F.R.S., and also in an article by Dr. H. A. Hagen, published in the American Naturalist (Volume x, pp. 80 and 135). They are as follows: BOSTON SOCIETY OF NATURAL HISTORY. 13 No society organized for the pursuit of the study of natural history should undertake to form a large rhuseum, unless it is endowed with means fully adequate for the constant care and preservation of its collections, either through support of the government, or from funded property that will yield income sufficient for such purpose. Large collections require enormous expense for preservation from destructive agencies, in the necessary supplies of jars, bottles, alcohol, and other articles absolutely required for use; and .for the payment of competent curators; as experience demonstrates that none others than those who are paid for their services can be relied on to permanently do the work, without which, sooner or later, all there is destructible in a collection will certainly go to ruin. In the early period of an institution founded by voluntary effort and designed to be so sustained, the members, zealous and active, may for a time, and while the collection is not great, manage to arrange the specimens received, and keep them from destruction by care, but as the museum increases, this becomes onerous to them, and finally impossible. Its impending destruction discourages the members, and the society itself, unable to bear the necessary expense of preserving what they look upon as an important element of existence, is finally dissolved. A society of natural history not supported by government, and inadequately endowed, should never undertake to make more than a very limited collection of specimens, and these should be confined to such as illustrate the natural history of the immediate neighborhood, with perhaps a few others, typical specimens only, of forms found in distant regions. Where more than this is attempted by any society, continued existence and progress can only be predicted in case it possesses ample means to employ steadily a sufficient number of capable men to take charge of its museum, and exert a_ careful watchfulness over the specimens. No society can long exist that depends upon voluntary continuous labor on the part of its members, or on the voluntary subscriptions of its friends. Nor is the collection of an immense number of specimens in every department of nat- ural history a desirable thing for the general student. It is far more important that there shall be an epitome collection so arranged as to give elementary instruction to visitors who seek knowledge and to whom a great multitude of specimens might be confusing. Of course there is no objection to the largest collection of known species where there are abundant means to obtain and care for them, but an arrangement of such should always be preceded by a proper synoptical series; the latter for the instruction of the general student, the former for the use of advanced naturalists who need such collections for comparison. A large collection has the effect of attracting great attention, and the wondering thousands who are drawn by its exhibition to visit it daily or weekly, enjoy an innocent pleasure that is well worth providing for in all large communities, especially as the influence may often go far beyond gratifying curiosity. The collection of species local to the neighborhood, should perhaps be the aim of every society, as a knowledge of all the forms of life met in our daily walks is very desirable. Perhaps the experience of no society better illustrates the truth of some of these remarks than that of the Linnean Society. It was formed by men of more than ordinary ability, and in a community ready and willing to aid it by voluntary contributions. Its members were hard workers, and freely gave much time to its interests. But it had no funded 14 HISTORICAL SKETCH OF THE wealth and could not look to government for support. It flourished greatly for a consid- erable period and only showed signs of weakness when its rapidly increasing collections, garnered from every quarter of the globe, called for continuous labor and large expendi- ture of money. Engaged as the members were in professional or business occupations, they could not give the former, and they became tired of soliciting subscriptions to meet the latter. The result was inevitable. Tue Boston Society or NAaturaAL History. In passing from the consideration of the doings, the experience and the dissolution of the Linnean Society to a review of the history of the Boston Society of Natural History, the question naturally arises in the mind whether the new Society started under any better auspices, financially or otherwise, than the old, and if not, whether its aims and objects were so different as to render it less liable to ultimately meet with the same fate. A careful reading of its records fails to show that pecuniarily it was any better provided with means in the early period of its existence, or that its aims and objects or its proposed methods of action were in the least different from those of its unfortunate predecessor. This is especially noticeable, as among its earliest members are found the names of several who had been active in the Linnean Society. As will be seen further on, the Society was at first dependent entirely on the annual assessment of its members; yet it proceeded at once to collect specimens for its museum without discrimination, thus involving itself in the same kind of expenditure for their arrangement and preservation. That it finally succeeded in establishing itself on a firm foundation will be seen to have been the result of fortunate circumstances that could not have been foreseen, much less depended upon, and without which success would probably have been impossible. The first meeting of such persons as favored the formation of a new society was held at the house of Dr. Walter Channing, February 9th, 1850. Dr. Channing was made Chairman, and Mr. Simon E. Greene, Secretary. A committee was appointed to recommend at a future day such measures as it should judge advisable for the formation of the Society, and for creating an interest on the part of the public in its objects. Dr. George Hayward, Dr. John Ware, Mr. Edward Brooks, Dr. Amos Binney and Mr. Geo. B. Emerson, composed the committee. It does not appear whether other persons were present than the seven named, as the number that met is not mentioned. Of those whose names appear, three were active members of the Linnzean Society, viz.: Dr. Walter Channing, Dr. Hayward, and Dr. Ware. There were two other original members of the new Society who had been active in the Linnean, viz.: John Davis, LL.D., and Mr. Henry Codman. At a meeting subsequently held, the date of which is not given, the committee made a report, which was adopted and a vote was passed, ‘‘ That a Society on the plan proposed, be now formed,” and this was followed by the appointment of a committee to wait upon persons favorable to the objects of the Society and obtain their signatures ; with authority to call another meeting as soon as a sufficient number had subscribed. BOSTON SOCIETY OF NATURAL HISTORY. 15 Such a meeting was called together on the 28th of April, and was held at the room of the Trustees of the Atheneum at 7 1-2 o'clock P. M. Dr. Channing was chosen Moderator, and Theophilus Parsons, Secretary. The names of the subscribers were read, and a sketch of rules and by-laws for the government of the Society presented for con- sideration. It was then Voted, That the name of the Society shall be The Boston Society of Natural History. Then followed discussion on the rules proposed, and finally a committee was appointed to draft a constitution and code of by-laws and to report at the next meeting. Dr. Binney, Dr. Hayward and Simon E. Greene were made this committee. Thus was formed this Society, destined to become one of the leading institutions of the kind in the world, into whose museum thousands would gather weekly for observation and instruction, and whose publications would be known and valued in every civilized community. The next meeting was held on May 6th, and the constitution and by-laws which had been proposed, after due consideration and with some amendments, were adopted. An adjournment for one week followed. On reassembling at the apnointed time the members proceeded to vote for officers and the following named persons were chosen to fill the positions designated : Thomas Nuttall, President. Geo. Hayward, Wirst Vice-President. John Ware, Second Vice-President. Gamaliel Bradford, Corresponding Secretary. Theophilus Parsons, Recording Secretary. Simon E. Greene, Treasurer. Seth Bass, Librarian. CuRATORS: Francis C. Gray, Edward Brooks, Amos Binney, Jr., Geo. B. Emerson, Walter Channing, Benj. D. Greene. Joseph W. McKean, Francis Alger, A committee was then appointed to make enquiries relative to the collection of the late Linnean Society, which had been presented to Harvard College upon certain ‘conditions which had not been complied with, and to learn whether the whole or any part of it could be obtained for the cabinet of this Society. No farther meeting is recorded until August 9, though the adopted by-laws required that one should be held on the first Thursday of every month. At this meeting it was announced that Dr. Nuttall had declined to accept the office of President, whereupon the members present proceeded to fill the vacancy, and Benj. D. Greene was unanimously elected. Thus was completed the organization of the Society, and we find that the Council, now composed of all the officers, proceeded at once to take active measures for the furtherance of its objects. The next day after the election of Mr. Greene, it held a meeting and appointed a committee to arrange for a course of lectures, to designate the lecturers, and to decide upon their compensation ; also one to procure rooms for the use of the Society. At the next meeting of the Council a week later, the committee on lectures reported in favor of a course of sixteen to be given besides an introductory lecture, and that tickets of admission be put at $3 each, 16 HISTORICAL SKETCH OF THE &5 for a gentleman and lady, and $2 for each person additional. The subjects proposed and the number of lectures to be devoted to each were as follows: Two on a general account of the Mineral Kingdom and Geology, particularly as connected with animal and vegetable remains ; four on Anatomy and Physiology of the Vegetable Kingdom, with general account of the characters, relations, and uses of plants and their distribution ; two on Anatomy and Physiology of the Animal Kingdom, and of the principles upon which its scientific arrangement is founded, etc.; two on the Mammalia; two on birds; one on Reptiles and Fishes; two on Insects; one on Invertebrate Animals. Subsequently the Committee reported that they had decided upon the compensation for the lectures, and fixed it at $20 for each. The persons selected to deliver the lectures, and who accepted the invitations, were Dr. George Hayward, Mr. Thos. Nuttall, Dr. Gam- aliel Bradford, Dr. John Ware, Dr. Walter Channing, Dr. J. V. C. Smith and Dr. D. Hum- phreys Storer. The introductory lecture was free to the public. This course of lectures was commenced on the third Tuesday of October, and they were continued weekly. Where they were delivered, and by whom the introductory one was given, does not appear in the records. These lectures yielded a net profit of $174.58. Besides this course, there was another given under the auspices of the Society, before the close of the lecture season, by Mr. Nuttall, on Botany. This yielded $170, $100 of which was paid the lecturer and $5.50 for expenses; the balance, $64.50 going into the treasury. It will be recollected that in the sketch given of the closing proceedings of the Lin- nan Society, it was stated that as the Trustees of Harvard College had failed to comply with the conditions binding upon them in accepting the collection of that Society, re- clamation had been made with the purpose of presenting whatever might yet be of value to the Boston Society of Natural History. This had been done at the instance of several members of the latter society who had likewise been members of the former, and who reasonably felt aggrieved at the want of care shown for the collection by its possessors. One of these, Dr. Hale, remarked that “ he felt it to be his duty as an officer of the Linnean Society, to express the opinion that something effec- tual should be done; that he would take the opportunity to again assert that Harvard University had forfeited all her right to the possession of the cabinet of the Linnxzan Society. The members of that Society were not so faithless to the cause they had espoused as to desert it. When few in numbers and burdened with heavy assessments, they had relinquished their rich collection to the Corporation of said University, that body having passed at a formal meeting a vote to erect a suitable building to preserve the collection, for the benefit of students m natural history. That agreement had not been complied with, no buildmg had been erected, and the specimens were scarcely to be found. Justice to the members of the Linnean Society compelled him to make these observations.” It seems now but right to give here the remarks of one whose statement can be taken as authentic concerning the whole matter, as it furnishes more succinctly than anything else found, a_ full justification of the course taken in presenting the valuable collections of the Linnzwan Society to the College. Provision was made as far as was possible for its preservation, in BOSTON SOCIETY OF NATURAL HISTORY. yy placing it where it was thought it would be of great service to students in Natural History. The result of the application which was made to obtain for the Society whatever might be left of value may be given in the few words taken from the record of the Annual Meeting of the Society in May, 1832, which are as follows: “In the course of the year, an order was obtained from the President of Harvard College for the surrender of such articles as might remain of the old Linnzan Society, in pursuance of which a quantity of refuse matter was sent to the Society’s room, but nothing of any considerable value was obtained.” Early action was taken to render the monthly meetings interesting, first, by referring specimens presented to such Curators as were the most interested in the department to which they belonged, to report upon at the next meeting. This added much interest to the proceedings, and led to better attendance. At that time, so little was known of many of the objects now familiar to all in the collections of natural history, that many which would now be received without remark, because of their well known character, excited not only much interest, but considerable discussion. It was at a time when a convoluted mass of chaleedony might have been seen in the Boston Museum, labelled petrified kidney, when at the store of a dealer in curiosities, within a stone’s throw of the hall of the Society, fossil corals were exposed for sale as petrified flagroot, when Ammonites upon being discovered in the rocks were heralded in the papers as coiled snakes, sometimes mentioned as being as large as cart-wheels, and exciting wonder in proportion to their size. The writer well remembers receiving notice of a remarkable “ petrified bug” in a museum at New Orleans, and upon its being procured and sent to him, finding it to be an excellent specimen of a Trilobite, originally, no doubt from the Trenton limestone of New York. Soon after the organization of the Society a room was hired for its use in the Athenzeum building in Pearl street. Here its collections were deposited and here the meetings, after the first two, were held until more suitable accommodations were obtained three years afterwards. The early meetings took place in the evening, but subsequently for several years in the afternoon, sometimes at 3 and sometimes at 33 o'clock. They were held once a month until August, 1833, but after this time twice a month. In January, 1831, measures were taken to procure an act of incorporation for the Society, and in the same month, in view of the great lack of books on Natural History, it was Voted—That this Society considers a library of works essential to its success ; and funds were appropriated to purchase the best elementary books in the different branches of natural history. A Committee of the Council was also appointed at this time to apply to the Governor and his Council requesting that the gentleman making a Geological Survey of the State might furnish the Society with a suite of geological specimens. No further reference is made to this matter, and the request does not appear to have been favorably considered, as no such collection ever became the property of the Society. The State Collection itself, was, how- ever, deposited for several years in the Society’s rooms. A singular provision to obtain information was made in February, 1831, by a vote passed, which was in substance as follows: 18 HISTORICAL SKETCH OF THE That a blank book be provided and placed on the table in which may be written queries on subjects of natural history by any member and such answers as may be given ; unless the latter may be of considerable length, when they may be put on file. March 18, 1831. 3,014.38 (Caine immer Mere CM etre isu ters nck tects Gite wr os 8S Re cet wen! wy |e 838.32 GD AT yee MCC SPR Myo Yoh ty Feed cee alma Mlsy Event aha) esses 71.89 Temporary loans, . . . Spee a Ae cis tace has Che in Seah ve 62,010.00 Investments of Walker fond, Be sh bas) veh m oeiee St fal ote ise 41,105.00 IMGCTES ue MEER MMMM RIICCEe NCTM Ys Eled ane Yorv. =: gis CUES 6 ica te. 251.81 $119,947.56 ShoOwinotaapAlancerdMeRMmMyOter est sw ti ise sh 6 «oe te 3397.05 106 HISTORICAL SKETCH OF THE As Treasurer of the Courtis Fund he reported that it consisted of an amount due from Way Soin, Ube ONL 65 6 6 bo Go Bo 6 o oO oO oo oF Bo ttopebeil POOL G3, ToNKOIAMeANE) INO GE oo G6 Hon oH 6 6 nm 6 6 0 bo poo 6 6 5 BHI As Treasurer of the Bulfinch Street Estate he reported receipts amounting to . . $1.073.00 ING CrqyeChinnss OG 5 5 5 6 0 bo 6-6 0 0 6 oO 6 6 8 oo eo oo 341.39 Soar lobar ailnnel@: 5 5 ¢ 6 656-5 5 6 560 OOo Bo OO $731.61 As Treasurer of the Walker fund, he reported receipts amounting to. . . . . . $1,226.97 ANUGC| GrqsNCliNS Che a 6 SoG 6 dO 6 56 696 5 6 6 6 6 oo oo o AMUSO SHO anys DEE! o so o o 0 5 6 0 6 Go 6 0 0 6 0 a 5 06 a 0 ERIeYeb) The balances in his hands belonging to the Bulfinch Estate and Walker fund amount- COs Soa ace OReORN aes ns Poe CLL tena a Ghinom etc dr 6 44 im ea mitt otie Balance due him on general appropriations, . . . .-. +... =... .... . 93s97.05 Actual balance in his hands of all the accounts rendered, . ..... =... =. $481.51 He presented estimates of the value of the property belonging to the Society at different times for pur- poses of comparison; in May, 1862, the value was $85,001.49; in May, 1863, $133,497.80; in May, 1864, $142,512.47; at the present time, $167,881.51. These estimates included the buildings and furniture, but not the library or the cabinet. In retiring, the Treasurer said he would not undertake to estimate the value of our prop- erty, in the estate of our late benefactor, Dr. Wm. J. Walker. It was sufficient for him to know that in resigning the office of Treasurer, he left to his successor the pleasing task of showing on the next anniversary, means of usefulness beyond what the most sanguine expectations could have looked for. On behalf of the Building Committee, Mr. Bouvé announced that the full cost of the new building, including commissions for architectural services, but not including the cases, had been $94,593.80, and that the cases had cost $10,005.56, making the total amount expended $104,397.16, a result with which the Society had reason to be gratified, consider- ing that such a structure with the cases would have cost much more if the construction had been delayed, by reason of the greatly enhanced prices of material and labor. With this report presented as a final one, the committee asked the Society to accept the buildig and discharge them from further duty, which was done with warm thanks. By the Custodian’s report it appeared that much work had been done in the several departments towards perfecting the arrangement of the specimens and adopting means for the safety of such as were perishable. Not without great regret, however, did the members learn of the extent of the injury done to the collections by the ravages of insects, and of the absolute unfitness of the cases throughout the building for the preservation of the speci- mens from dust and destructive vermin. Already had it become apparent that there yet would have to be a large outlay in substituting other cases before the treasures of the cabinet could be regarded as secure. It had not been recognized when those now in use were constructed, that they should be made practically air tight in order to render them suitable for what they were designed. The Library now contained 11,191 volumes and pamphlets. The additions through the year had been 1519, or between 11 and 12 percent. The greater part of the increase was stated to have come from exchange with kindred institutions. BOSTON SOCIETY OF NATURAL HISTORY. 107 The Botanical department had had during the year an accession of about 1800 New England plants, the bequest of Mr. C. A. Shurtleff, and over 1200 German plants from Col. Joseph Howland. The Geological and Palaeontological department had received in exchange a series of casts of large animals from Prof. Ward, a collection of fossils from the Andes presented by Dr. Winslow, and a natural cast in Red Sandstone of the bones of one of the animals that probably made impressions upon the rocks of the Connecticut river. The most important and interesting addition to the collection during the year, was the cast of the Megatherium presented by the late Joshua Bates of London, and which had been mounted on a platform in the eastern part of the main hall. This was done by Mr. Sceva with artistic skill, under the superintendence of Dr. James C. White, and it is believed in a posture consonant with what the character and habits of the animal required. The whole collection of the department was stated to consist of about 5250 specimens. The Mineralogical collection was reported to have undergone a thorough revision during the year. The specimens suitable for exhibition and arranged upon the shelves, numbered about fifteen hundred. The department of Comparative Anatomy and Mammals had received an accession of eighty-four specimens in all, including seventeen skins of mammals. Skeletons of the white whale, porpoise and dromedary had been set up, and much work done by the Cura- tor, in making sections of skulls representing the various orders of mammalia. The Curator again called attention to the unsafe condition of the skins in his department. The Ethnological department had received from many donors, principally Commodore Charles Stewart, Dr. C. F. Winslow, Mr. E. A. Brigham, Mrs. James Phillips, and the Smithsonian Institution, articles from Japan, Siam, California, Mexico, and from local- ities in Massachusetts, all of which had been placed in the collection. The Ornithological department was represented to be in good condition, but the Cura- tor complained sadly of the unsuitableness and imperfect construction of the cases. The Odlogical collection had been increased by donations from Dr. Henry Bryant, Dr. A. 8. Packard, Jr., John R. Willis, Esq., of Halifax, and Dr. Chas. T. Jackson, in all numbering forty-five specimens. The Conchological department had received a donation from Dr. Henry Bryant, of a collection of shells from Cape St. Lucas, and from Dr. Gundlach of a series of Cuban shells identified by him. The Herpetological department was reported as containing about five hundred species, half of which had been identified and arranged for exhibition, the others remained unar- ranged for want of bottles, alcohol, Xe. The Ichthyological department had received many additions, the donors being Prof. F. Poey of Havana, the Lyceum of Natural History of Williams College, Dr. H. Bryant, the late C. A. Shurtleff, Mr. S. M. Buck, Mr. W. A. Nason, Mr. W. H. Dall, Mr. E. T. Snow, Mr. H. C. Whitten, Dr. C. F. Winslow, Dr. B. 8. Shaw, Mr. David Pulsifer, and the Curator, F. W. Putnam. The department of the Radiata had received donations from Dr. H. I. Bowditch, Dr. Samuel Kneeland, John B. Willis, Esq., Dr. A. S. Packard, Jr., and the Essex Institute of Salem. The Echinoderms had been fully catalogued and arranged, with the exception of 108 HISTORICAL SKETCH OF THE the alcoholic specimens, which required bottles and fresh spirit before they could be put on exhibition. To the collection of Crustacea a large number of specimens had been added during the year. The collection of the Microscopical department remained about as before reported, but few additions having been made to it. It was sad to learn what indeed had been partially known before, that a large part of the Entomological collection was well nigh ruined by the Anthreni, which, from want of secure cases and continuous care, had been able to attack the specimens and accomplish their destruction. The magnificent collection of Professor Hentz, purchased at considerable cost many years since through private subscription, and being then altogether the finest in country, might be said to be entirely destroyed, imasmuch as not one-fiftieth part of the whole remained fit to serve the student for purposes of comparison and identification, much less to place on exhibition. The same could be said of all the old collections pre- sented to the Society by Dr. Gould, Dr. Harris and others. How forcibly in this statement is brought to mind the truth often alluded to in these pages, that it is worse than useless to form large collections of perishable objects unless the means are at hand to command the accommodation and the unremitting care and watchful- ness necessary for their preservation. The late collection of Dr. Harris, purchased and presented to the Society by several gentlemen after his death, and that of the late C. A. Shurtleff, which came to the Society by bequest, were reported to be in fair condition. These were receiving proper attention, and a large number had been put upon exhibition. The whole number of specimens of every kind added to the cabinet during the year, the Curator stated to be 21,155, of which half were insects, the bequest of Mr. C. A. Shurtleff. The very efficient Curator of Botany, Mr. Charles J. Sprague, much to the regret of every member of the Society, resigned his office at the annual meeting, after a long ser- vice of twelve years, during which time, he had brought order out of disorder, so far as the herbarium of the department was concerned, and accomplished an amount of work in identifying, arranging and poisoning the plants, of incalculable value to the Society, and such as few persons in active business could have found time to do. The thanks of the Society were unanimously voted to him, and also to the retirmg Treasurer for their services in its behalf. At the election of officers, Edward Pickering was chosen Treasurer, in place of Thomas T. Bouvé ; Thomas T. Bouvé Curator of Mineralogy in place of William T. Brigham ; and Horace Mann Curator of Botany in place of Charles J. Sprague. The office of Custodian was left vacant, Mr. Scudder declining to act longer as such. In the August following, Dr. A. 8S. Packard, Jr., was appointed by the Council Acting Custodian. In October of this year, Dr. Henry Bryant announced his intention of presenting to the Society a large collection of birds recently purchased by him when in Europe, and asked that an appropriation of $4,000 be made, for the purpose of fitting up two of the rooms in the second story for their reception. This was voted, and a committee consisting of Dr. BOSTON SOCIETY OF NATURAL HISTORY. 109 Bryant and Dr. J. C. White, was appointed to attend to the proper construction of the cases. The collection, which was purchased by Dr. Bryant of Count Lafresnaye de Falaise for the purpose of presentation to the Society, was the largest and most valuable private.one in Europe. It contained nearly 9,000 specimens, all finely mounted, and from 4,500 to 5,000 species. Of these, 700 to 800 were from North and South America, many heing type specimens described by the Count himself, an able ornithologist.. October 18th, Dr. Burt G. Wilder was elected Curator of Reptiles in place of Dr. Francis H. Brown, who had resigned at the previous meeting. A special meeting of the Society was called to consider the subject of creating the office of Director of the Society, whose duty it should be to administer the affairs of the Museum and Library, with the intention of inviting Dr. Jeffries Wyman to take such office. With great unanimity of feeling and action it was voted to invite Dr. Wyman to fill such office, with a salary of $2,500 per annum, clerical assistance in the administration of the Library and such scientific assistance as might be necessary. To the great regret of all the members, Dr. Wyman, after much consideration, declined to accept the position tendered him. The office designed for him was not therefore created. In December, the Treasurer announced the reception by him of the first instalment of the Walker bequest, amounting to $100,000 in various stocks, and that it had now become the duty of the Trustees to assume the management of this property. 1866. From the report of the Acting Custodian, Dr. Packard, made at the annual meeting in May, we learn that there were twenty stated meetings of the Society, and eight of the Microscopical section. These had been well attended, and the communica- tions presented were of an interesting and instructive character. Forty-four Resident and eleven Corresponding Members had been elected. The Society had again resumed publication, after having omitted to issue any of its Pro- ceedings for a year, and not having continued its Journal beyond Volume VII, printed in 1863. In resuming publication it was thought best to change the form of the Journal from octavo to quarto, and also to change the title to “ Memoirs.” It was also decided not to furnish the Proceedings to members free of cost, as hitherto, the state of the Treasury not warranting it. The first part of Volume I of the Memoirs, and nearly one half of Volume X of the Proceedings, including the records of the meetings held in 1864 and 1865, were mentioned as having been issued. The Treasurer’s report for the year showed that there had been an excess of expendi- ture over receipts, not including borrowed money, of $2,890.19. The amount expended, however, included $5,030.61, the cost of fitting up rooms with cases for the Ornitho- logical collection. The Librarian reported an accession of 981 volumes, parts of volumes and pamphlets, of which 767 had been received in exchange for our publications. He stated that the Library now contained 7622 volumes, 2097 parts of volumes, and 2462 pamphlets. The Curator of Microscopy stated that the collection was in good preservation, though not in such order as it should be. Donations had been received from Dr. 8. A. Bemis, Dr. C. F. Winslow, and Messrs. C. G. Bush and J. S. Melvin. 110 HISTORICAL SKETCH OF THE The meetings of the Section had been well attended, with advantage to its members and to the Society. The Curator of Comparative Anatomy reported the addition to his department of 2 skeletons, 1 parts of skeletons, 20 skulls, 4 skins of mammals, 5 mammals in spirit, and miscellaneous 3; total 44 specimens. The donors were Drs. C. T. Jackson, A. A. Gould, A. S. Packard, Jr., H. Bryant, B. J. Jeffries, S. Kneeland, and Messrs. H. Mann, C. Kirkpatrick, J. K. Warren, and the Boston Milling and Manufacturing Company. The specimens belonging to the department were represented to be in good order with the exception of the skins. The Curator of Ornithology reported the collection in good order. He stated that the Lafresnaye collection, before mentioned as purchased by him for the Society, arrived safely in the autumn of the previous year, and upon being unpacked had been found in perfect condition. He himself had personally superintended the packing while in France. The whole number of specimens received had been found to be 8,656. The Curator of Ichthyology reported valuable donations to the department from the Smithsonian Institution, of 54 specimens of North American fishes ; from Dr. A. 8. Packard, Jr., of 10 species comprising about 100 specimens Labrador fishes, and from the Curator of about 40 species comprising 1000 specimens from Lake Erie, and about 20 specimens from Dr. B.S. Shaw, Messrs. C. J. Sprague, W. H. Dall, J. 8. Lewis, Samuel Hubbard, R. C. Green- leaf and Caleb Cooke. The latter presented a fine specimen of the rare Leptocephalus gracilis Storer, one of six collected by him on Nahant beach. To the Entomological Cabinet about 600 specimens had been added, the principal donors being Drs. H. Bryant, S. A. Bemis, C. F. Hildreth, A. A. Gould, C. T. Jackson, 8. Kneeland, Jr., C. F. Winslow, Messrs: A. R. Grote, Samuel Hubbard, 8. H. Scudder and Prof. J. L. Smith. To the collection of Crustacea 440 specimens had been added. Of these, 50 species, comprising about 340 specimens, represented the Crustacean fauna of Labrador, and 25 species, comprising 80 specimens, that of Maine. The Worms, now united with the Crustacea in the department, included 55 species, of which 30, comprising 115 speci- mens, were from the coast of Labrador; and 14, comprising 65 specimens, from Maine, had been obtained by the Curator. The donors to the department of Crustacea and Worms, were Drs. A. 8S. Packard Jr., B.S. Shaw, A. A. Gould; Messrs. E. R. Mayo, Samuel Hubbard, C. Stodder, F. G. San- born, C. C. Sheafe; and Captain E. Smith. The Conchological department had received about 1,500 specimens, many of them of great value, the donors being Dr. A. S. Packard, Jr., Dr. Gundlach, Dr. Henry Bryant, Dr. A. Chapin, Dr. C. T. Jackson and Mr. A. Coolidge. The department of the Radiata had received from the Essex Institute 10 species, from Dr. A. S. Packard, Jr., 250 specimens, from N. Appleton 3 species, and from Yale College in exchange 59 specimens, comprising 34 species. The Curator of Mineralogy reported the whole number of specimens on exhibition to be about 2,000. The department had received donations from Drs. C. T. Jackson, Henry Bryant, A. S. Packard, Jr., the Agassiz Natural History Society, Prof. Jeffries Wyman, and Messrs. G. P. Huntington and W. H. Dall. BOSTON SOCIETY OF NATURAL HISTORY. aati The department of Botany had received very valuable donations of mosses and lichens from the former Curator, C. J. Sprague, Esq., comprising about 500 species. Specimens had also been presented by Drs. C. Pickering, C. F. Winslow, A. 8. Packard, Jr., 8. Knee- land, Jr., and Messrs. Gunning, E. R. Mayo, H. M. McIntire, William Nelson and S. Wells, Jr. The Curator of Herpetology reported 69 additions to the department during the year, the donors being Drs. A. 8. Packard, Jr., S. Kneeland, Jr., C. F. Winslow, and Messrs. §. Hinckley, F. Andernach, D. White, and Captain Barber. The Ethnological department had received a few donations from Dr. H. Bryant, A. E. L. Dillaway and Horace McMurtrie. To the Odlogical department there had been no additions. In June, the sad intelligence of the death of Prof. Henry D. Rogers of Glasgow was received. Henry Darwin Rogers was born at Philadelphia, in 1809. He early became interested in scientific pursuits, and while still quite young engaged as State Geologist of Pennsylvania in an extended and very thorough survey of that State. His great work on the geology of Pennsylvania, subsequently published, placed him at once in the front rank of American geologists, and his later Report on the Geology of New Jersey was a valuable contribution to science. His eminent attainments led to his being invited, in 1857, to take the chair of Regius Professor of Geology and Natural History in the University of Glascow, Scotland. He accepted this position, which he filled to the time of his death, which took place on his return from a visit to his native land, at his residence, Shawlands, near Glasgow, May 29th, 1866, in the fifty-eighth year of his age. He was a brother of Professor William B. Rog- ers, and for several years was a resident member of the Society; while so, manifesting much interest in its welfare. Valuable communications were frequently made by him, reports of which may be found in the Proceedings. In September a special meeting of the Society was called upon the occasion of the death of one of its founders and most eminent members, Dr. Augustus A. Gould. This event was announced by the President, and a committee, consisting of the President, Thomas T. Bouvé and 8. H. Scudder, was appointed to report a suitable address upon the occasion. A vote was unanimously passed that the Society attend the funeral, and four mem- bers were appointed to act as pall-bearers in connection with those appointed by the Suf- folk District Medical Society. The four were the President, Dr. C. T. Jackson, Mr. George B. Emerson, and Mr. C.K. Dillaway. The services were at the Rowe Street Baptist Church, of which he was a member, and were attended by a large concourse of friends. At the regular meeting on Sept. 19th, on behalf of the committee appointed at the special meeting the President read the following notice : “Dr. Augustus Addison Gould, for many years one of the Vice-Presidents of this Society, died at his home on the morning of the 15th day of September. By this sad and sudden event, the Society loses one of its most honored and respected associates, and science a disinterested and truthful worker. From the beginning of our existence to the day on which he died, his hand was never weary in our service. Through many years we have leaned on him for his wise counsel ; his thought and labor more than any other have helped 112 HISTORICAL SKETCH OF THE> us in our progress, and it is to his name and fame at home and abroad, that we are very largely indebted for what we most prize in our own. It is not we alone that suffer from his death. His interests were broad and catholic and embraced whatever was good and excel- lent, and his helping hand was not withdrawn whenever sought, whether in behalf of the interests of science, education or humanity. The loss to these will be truly great. For all his disinterestedness he was not without his reward. The profession of which he was so dis- tinguished an ornament gladly bestowed upon him its highest gifts, and the community of which he was so worthy a member gave love and honor for his many graces of character and for his work in life so full of christian excellence. With head and hand still busy and with a heart still earnest in his chosen work and still warm in all his relations to friends and kindred, it was God’s will that he should pass away. The Society would express its gratitude for the example of his life, and offers its deepest sympathy to those to whose hearts his death brings so much sorrow.” Dr. Wyman then stated that a more full notice of the scientific labors of Dr. Gould would be presented by the committee at a later meeting. Dr. C. T. Jackson followed with remarks upon Dr. Gould’s character and work, passing in review the various stages of his scientific career; and Mr. C. K. Dillaway read an interesting autobiography of him which had been written in 1850, and which he had in his possession as secretary of his college class. It was then voted that a copy of the notice of the committee be furnished to the press, and that out of respect to the memory of our lamented friend and associate the Society adjourn without the transaction of business or the hearing of scientific papers. A considerable portion of the obituary notice of Dr. Gould, prepared by Dr. Wyman in behalf of the committee and published in the Proceedings of the Society, Volume IX, page 188, is here given: Augustus Addison Gould was born in New Ipswich, New Hampshire, on the 23d of April, 1805. His early life was passed there, and as soon as he was old and strong enough to labor, the larger part of the year was given to his father’s farm, and the rest to the common school. At the age of fifteen he took the whole charge of the farm; nevertheless a part of the year was devoted to study, and some progress was made in the classics. By the careful husbanding of the odds and ends of time and a year’s teaching at an academy, he was prepared to enter college, and entered at Cambridge in 1821. With his college life came a struggle, the forerunner of many such by which his strength was to be tried. He had already come to know something of the barrier which limited means had put between himself and the things he aspired to, and now this assumed larger proportions, such as to most persons would have been disheartening. College duties and exercises demanded his time, nevertheless his education must be paid for, and he must do largely towards earning the means;: and so by strict economy, by performing various duties for which indigent students received compensation, and also by hard work in vacations and on those days which others gave to relaxation, he says he at length fought his way through, and attained to respectable rank. In college he was noted among his classmates for industry, and it was there, too, that his taste for natural history began to show itself. He became familiar with the most of our native plants and to the end of life never lost his love for them. After leaving college, he ) 7 7 Yj q 4 Gou tv ff = EN IED, eee BOSTON SOCIETY OF NATURAL HISTORY. 113 held the office of private tutor in Maryland, and at the same time began the study of medicine. The rest of his pupilage was passed in Boston, and the last year of it at the Massachusetts General Hospital as house student. He was graduated in medicine in 1830, and at once began the practice of his profession, having given good grounds to his friends for expecting future eminence. But his struggles with poverty were not yet ended. Until his profession could yield him a support, he was obliged to go out of it, to earn the neces- saries of life. To this end he undertook burdensome tasks; one of them, the cataloguing and classification of the fifty thousand pamphlets in the library of the Boston Athenzeum, was Herculean, as any one may see who will take the trouble to look over the four large folio volumes he wrote out, monuments of his patient industry and handiwork, and for which he got only a pitiful return. The study of natural history was nearer to his heart than all other pursuits, and to that he could always turn, and did, whenever he could command a few spare hours or moments to do so. Asa matter of course, he became a member of this Society. This was soon after its organization, and to the time he died he labored for us without stint. When his studies began to assume a methodical shape, his first investigations were in the class of insects, of which, at one time, he had a large collection. Among his first published works was a monograph on the Cicindelae of Massachusetts, printed in 1834, and in 1840 he pub- lished an account of the American species of shells belonging to the genus Pupa, in regard to which he found much confusion. These shells are very small, and Mr. Say, who named all the species previously described, gave no figures, and consequently naturalists fell into error. “Ihave received from our best conchologists,’’ Dr. Gould says, “a single species under four of the names that Mr. Say applied to as many different species.” Dr. Gould then points out how, by the use of the microscope, and a careful study of their minuter details, the classification of them might be improved. The paper was illustrated by about thirty figures carefully drawn by himself, with the aid of the microscope. In 1841, he read before this Society a paper entitled “ Results of an examination of the species of shells of Massachusetts, and of their geographical distribution.” This is the more noteworthy since the geographical distribution of animals had at that time attracted but little attention, and none amongst us. Now it involves one of the most important zodlogical problems. Dr. Gould also points out in this paper the influence of shore outlines, and shows from a comparison of species, that Cape Cod, which stretches out ito the sea in a curved direc- tion some forty or fifty miles, forms to some species an impassable barrier. Of two hundred and three species, eighty do not pass to the south, and thirty have not been found to the north. In the same paper he calls attention to the importance of the fact that cer- tain species appear and disappear suddenly, and of the necessity, in order to construct a correct catalogue of the shells of any region, to extend observations through a series ot years, a consideration by which many naturalists, even of the present day, might profit. One of the first results of the joint action of the members of this Society, and of which it has more reason to be proud than any other, was the part taken by some of them in the series of admirable reports on the natural history of the State, presented to the General Court in compliance with a legislative enactment. The report on the Invertebrate Animals, excepting insects, was by Dr. Gould. 114 HISTORICAL SKETCH OF THE The Molluses were Dr. Gould’s favorite subject for study, and his attention was chiefly given to them. Up to this time, few if any attempts had been made to give as complete a zovlogical survey as practicable of any particular region of the United States. As regards the Molluses, the descriptions of Say, Conrad and others, pioneers in conchology, pertained more to the Middle and Western States, than to New England. Their writings were frag- mentary and scattered through the narratives of travels, journals of science, and even news- papers. It was no small labor, therefore, to become acquainted, merely as a preparation for his task, with the writings of his predecessors. To make his report as complete as possible, and to ascertain what changes in the classification of Molluscs recent important progress growing out of the study of them would indicate, he opened correspondence for information and exchanges with European naturalists imterested in the same branch of study, who obligingly and courteously lent their aid, and out of this correspondence grew up long continued friendships. The report fills a volume of nearly four hundred pages, illustrated by more than two hundred figures skillfully drawn from nature by himself. ‘“ Every species described,” he says, “indeed almost every species mentioned, has passed under my own eye. ‘The descriptions of species previously known, have been written anew, partly that they be more minute in particulars, and partly with the hope of using language somewhat less technical than is ordinarily employed by scientific men.” The number of species described was about two hundred and seventy-five of Molluscs and nearly one hundred of Crustaceans and Radiates. As a contribution to zoélogical science, this report gave him an honorable name and an eminent position among the naturalists of Europe and America, Dr. Gould edited the admirable work entitled “The Terrestrial Air-breathing Molluses of the United States,” prepared, but left unfinished at the time of his death, by his intimate friend, Dr. Amos Binney, formerly the respected president of this Society, and whose name we hold in grateful remembrance, not only for his contributions to science, but for the munificent bequest which fills so large a space on the shelves of our library. In 1848 he was associated with Prof. Agassiz in the preparation of the Principles of Zoology. His largest and most important contribution to natural history was the description of the shells of the United States Exploring Expedition. This was prepared under circumstances somewhat embarassing. The collection was not made by himself, but by the late Capt. Joseph P. Couthouy, well remembered as one of the most zealous and active members of this Society. Capt. Couthouy had drawn up full notes on the external characters of the soft parts, habits, geographical description, and other important points. Before the voyage was completed he left the expedition, but the notes and collections were sent to Washing- ton. The former were unaccountably lost, and no trace of them was found. The collec- tions, when they came into the hands of the Navy Department, were repacked by incom-— petent hands, the arrangement of them disturbed, labels in many cases lost, and the whole thrown more or less into confusion. Dr. Gould was called upon to save this wreck, but in accepting the task was obliged to submit to various arbitrary restrictions, and to leave undone many things he deemed of much importance. The Otia Conchologica was the last of his primted volumes, but this was merely a reprint in a condensed form of the descriptions of species of shells previously published BOSTON SOCIETY OF NATURAL HISTORY. 115 separately in different works. Besides the works already mentioned, there is a long cata- logue of communications made to the Boston Society of Natural History,which may be referred to as showing that he did not allow himself to become a mere specialist, but kept his mind awake to the relation of individual forms to higher and more general truths. We must not forget that Dr. Gould was a member of the medical profession, and that his time was of necessity chiefly devoted to this, while the scientific labors we have been considering were the yield of spare moments made useful. He was an active member of the medical societies of this city and of the State, and held offices of trust in them. The Massachusetts Medical Society conferred on him the honors which it has to bestow upon its fellows. In 1855 he delivered the annual address, which was marked for the soundness of its views and the characteristic clearness and elegance with which they were presented He took for his text the advice of: Harvey to the Royal College of Physicians of London when he founded the annual oration which bears his name, and in which, among other things, he enjoins upon the orator “an exhortation to the members to study and search out the secrets of nature by the way of experiment.’ Dr. Gould was elected president of the Medical Society, and his term of office ended within a few months of his death. He was for several years one of the physicians of the Massachusetts General Hospital, was an efficient member of the Boston Society for Medical Improvement, where he often com- municated valuable observations, and took an active part in its discussions. He labored much and long in preparing the vital statistics of the State from the official returns. At one of the meetings of the National Academy of Sciences, of which he was amem- ber, he presented an important paper on the distribution of certain diseases, especially consumption, in reference to the hygienic choice of a location for the cure of invalid soldiers. As a citizen, Dr. Gould made a principle of going out of the ordinary routine of life to lend a helping hand wherever it was desired, and he could. He served the public in many capacities ; in the religious society of which he was from early life a member, and in the public schools, where he took an active interest in all attempts to improve the ways and means of instruction. He from time to time gave public lectures, and although in this capacity he could not be said to be brilliant or highly accomplished, yet his unostentatious manner and simplicity, his knowledge of his subject and hearty interest in it, always gained him attentive listeners, who went away instructed. In his temperament he was genial, and drew friends around him, retaining the old and attracting the new. He came to the social gathering with joyous face and kindly feelings. His love for natural scenery was genuine and hearty, and whatever personal enjoyment came from this source, it was always enhanced if others partook of it with him. There are too many naturalists who stand in the presence of nature all their days, but see her not. ‘To them the world offers nothing but the forms they would technically describe and arrange in their cabinets. Take away this object and all becomes a waste, for they are neither warmed nor enlivened by the world around them. Not so with our associate; no one toiled more industriously than he over individual forms and specific descriptions ; but all this aside, every aspect of nature touched him to the innermost. Those who have been intimate with him know how his face would light up while in the presence of the least as well as of the greatest natural objects! the flower of a day, or the sturdy tree 116 HISTORICAL SKETCH OF THE that had known its centuries of life, the quiet or the grander scenes of the world. His emotions were not those of an enthusiast, but rather came of a clear perception and calm contemplation of the things around him, and of his own responsive nature. His life, all too poorly and inadequately represented in this sketch, was throughout a consistent one, and to the end each day was full to the round. He was still endeavoring to improve what had been done before, and looking forward to the accomplishment of new and better ends, when suddenly it was closed. He had been less well than usual; on the afternoon of September 14th, 1866, he manifested the usual symptoms of an attack of Asiatic cholera, soon after fell into a state of collapse, and on the following morning just before the dawn, he died. The office of Custodian, it will be remembered, was created in May 1864, and Mr. Sam- uel H. Scudder was elected to fill it. He held it one year only, when it became vacant and remained so until October 3d of this year, Dr. Packard performing its duties tempora- rily by appointment of the Council. The great importance of having the constant services of some able person who would at the same time perform the special duties appertaining to this office and also act as Librarian and Recording Secretary, led the Com- mittee on nominations to propose Mr. Scudder again to the Society for Custodian, and he was elected. An arrangement was then made by the Council with him, by which it was agreed that he should give his undivided attention to the wants of the Society through- out the year, excepting such time as might be allowed him for a vacation of from one to two months, and that he should perform all duties of Custodian, Librarian and Recording Secretary. The Society to provide permanent assistance in the Library department as heretofore, and also in the special manipulation of specimens which require immediate care for their preservation. Before the death of our lamented associate, Dr. Gould, there had been some negotiation with him for the purchase of his cabinet of shells, as he had expressed a willingness to part with it to the Society ata price much less than he would be willing to accept from any other party, as he desired it should finally have a place in the Museum. The only reason why the purchase had not been consummated was that Dr. Gould first wished to put it in good order, and to properly label all the specimens. This work he did not find leisure to do, and consequently much time of an able conchologist would be required to perform it. It wasdeemed therefore inexpedient to compete with others who offered more than the Society could afford to pay. This was more to be regretted because of its having been the collection of one so much revered by the members, and because it contamed many type specimens of species described by him. A large number of the species were, however, already in our cabinet. In November, the Society, upon motion of Dr. J. C. White, passed resolutions expressing appreciation of the value of the gift of Mr. Peabody to Harvard University for the founda- tion of a Museum and Professorship of American Archaeology and Ethnology, and great pleasure in the recognition on his part of the relation of this Society to that impor- tant department of Science in the selection of its President for one of the Trustees of the munificent endowment made by him. By the terms of this donation, the President of the Society is, ex-officio, one of the Trustees. BOSTON SOCIETY OF NATURAL HISTORY. Late At the meeting of Nov. 2d, Mr. Thos. T. Bouvé was elected Vice-President of the Soci- ety, to fill the vacancy made by the death of Dr. Gould. A Section of Entomology was formed at the meeting of Nov. 28th. Members of the Soci- ety only to be members of the section, the President of the Society to be ex-officio President of the section, and the Recording Secretary of the Society Recording Secretary of the section. The meetings to be held on the evening of the 4th Wednesday of each month. 1867. In January of this year, Palaentology, which had been combined with Geology, was raised to a separate department, and Thomas T. Bouvé was made its Curator. Wm. T. Brigham was chosen Curator of Geology. Early in this year the Society was the recipient of a munificent bequest from Miss Sarah P. Pratt. This lady had long been interested in the study of conchology, and had made a large collection of shells obtained from every quarter of the globe, many of them being of rare species. The whole cabinet, consisting of more than 4000 specimens, was bequeathed to the Society, together with her library and works on conchology, and the sum of $10,000 to be held as a fund for the increase and maintenance of the department devoted to that science. - As with individuals, so with institutions, events often succeed each other of the most diverse character, those of a joyful following such as are painful, and the reverse. Nota week had elapsed after the announcement of the bequest above-mentioned, when news was received of the death of one of the great benefactors of the Society, Dr. Henry Bryant. At a meeting held on the 20th of February, after some remarks by Mr. Bouvé expressive of the feeling that pervaded and saddened all hearts, a committee consisting of Drs. S. L. Abbot and J. C. White, and J. E. Cabot, Esq., was appointed to prepare a notice of the professional and scientific life of the deceased. Tn behalf of this committee, Dr. 8. L. Abbot subsequently read before the Society a very full and discriminating notice of Dr. Bryant, which appeared in Vol. XI of the published Proceedings, and from which the following brief abstract is given. Dr. Henry Bryant was born in Boston, May 12, 1820. He entered Harvard University in 1856, graduated in 1840, then studied medicine in the Tremont Medical School, from which he received the degree of Doctor of Medicine in 1843. He afterwards studied in Paris and subsequently joined the French army in Africa as a volunteer surgeon, in which capacity he served during the winter campagn of 1846. He returned home in 1847 and commenced the practice of his profession. His ,health failme him he was obliged to give up practice, and he ever after devoted himself to the study of Ornithology, which had always been a favorite pursuit with him. The precarious state of his health compelled him to take a great deal of outdoor exercise, and his active, energetic temperament led him often to the most distant parts of the country for the purpose of collecting specimens of Orni- thology. He had a singular power of endurance, and invalid as he was, a most. stoical indifference to considerations of personal comfort on these expeditions, which sometimes lasted for months, many of them being out of the country among the West India Isl On the outbreak of the civil war, he offered himself as a candidate for the position of assistant surgeon in the regular army, and after a very severe examination was accepted, but subsequently was appointed surgeon of the 20th regiment Massachusetts Volunteers being promoted to be brigade surgeon, in September, 1861. He was afterwards Med. ands. 118 HISTORICAL SKETCH OF THE ical Director in the army of General Shields, in the Shenandoah Valley. While engaged in this service he was severely hurt by his horse falling upon him, and confined to his bed for a portion of the many months during which he suffered from his mjuries. Yet, although it was even thought for a while that he might have to undergo amputation of his foot, he continued on duty all the time, and in the midst of his sufferings organized the military hospitals at Winchester. In August, 1862, he took charge of the Cliffburn hos- pital near Washington, and in December, 1862, was ordered to assume the care and oper- ation of the Lincoln hospital, in Washington, which under his thorough and most excellent administration, was regarded as a model hospital. But close confinement and excessive mental labor broke down his health and strength, and he was eventually compelled in May, 1863, to resign his commission. His faithful service in his country’s cause very nearly cost him his life, so utterly exhausted had he become by unremitting work. After the close of the war he went to Europe twice, and in December, 1866, visited Porto Rico. For some weeks he travelled about the island, suffering extremely from ill health all the time, but working at his favorite pursuits unintermittingly, until the Ist of February, when he was taken with what proved to be his last violent attack of illness, while on an expedition in the country, and died the next day. Dr. Bryant was no common man. He was peculiar in certain ways, but much of this peculiarity arose undoubtedly from his ill health and bodily suffermg. His thorough- ness, intellectual, honesty, and faithfulness to duty were marked characteristics through his whole career. He was as true as steel, through and through genuine, and with far more kindliness and wider sympathy than he ever liked to show. Dr. Bryant was elected a member of this Society in November, 1841. He served as Cabinet-keeper for a part of 1843, and took charge in 1855 of the Entomological collection for a time. From 1854 to the time of his death, he was Curator of Ornithology. He was a most munificent friend to the Museum of the Society, his donations embracing reptiles, fishes, crustaceous insects, minerals and birds. His most valuable gift was the magnificent Lafresnaye collection of birds, which amounted to nearly nine thousand fine specimens. Extensive pecuniary aid was also received from him whenever the purchase of collections was desirable for the museum. Dr. Bryant married in 1848, Miss Elizabeth B. Sohier, daughter of W. D. Sohier, Esq., of Boston. In March of this year Professor Baird, of the Smithsonian Institution, expressed a strong desire that the Society should codperate with that imstitution in extending the system of explorations undertaken by it, in return for which the Society should receive the first choice among the duplicates of objects cf natural history. He desired a yearly appropria- tion of $500. ; There was a unanimous wish on the part of the Council to act favorably upon the propo- sition which resulted in a vote: “That the sum of $500 be placed at the disposal of the Assistant Secretary of the Smithsonian Institution for the purpose mentioned, and that the Secretary intimate the desire of the Council to assist further at a future time.” April. The necessity of refraining from any account of the scientific papers brought before the Society or of the discussions that took place at the meetings, in order to con- fine this sketch within reasonable limits, has often prevented even a reference to much of BOSTON SOCIETY OF NATURAL HISTORY. 119 public interest. There was one subject, however, brought before the meeting of April 17th of this year, which is here mentioned, because there is yet quite as much diversity of opinion upon it as at that time, and some readers may be interested to learn where to look for the views of two distinguished members of the Society whose investigations led them to diametrically opposite conclusions. This subject was practically what was likely to be the result of the introduction here of the common house-sparrow of Europe. Dr. Charles Pickering ably presented his ideas on the question, maintaining that nothing but evil would follow their increase ; that its habits were of the most destructive character and that it had been the enemy of mankind for five thousand years. Dr. Thomas M. Brewer, on the other hand, at a subsequent meeting, defended the bird from the charges preferred against it, claimed that it had already accomplished much good in the destruction of insects, and cited the authority of many authors in proof of its great usefulness. The papers pre- sented were meagrely reported, but may be found in the eleventh volume of the Pro- ceedings. The establishment of the Museum of American Archaeology and Ethnology at Cam- bridge through the munificence of George Peabody, Esq., gave rise to the question whether it was worth while for the Society to continue its department of Ethnology. After much consideration it was judged best to abolish it, and this was accordingly done by a vote of the Council. The collection Was afterwards presented to the Peabody Museum of American Archaeology and Ethnology at Cambridge. Some of the rooms of the Museum which had remained unfinished were at this time prepared for use by laying the floors and building cases. The lecture room was also finished. Just before the annual meeting the Society was the recipient of a bequest from a former patron, Mr. Paschal P. Pope, of $20,000. This large sum was most gratefully received. Mr. Pope had been a successful merchant and had accumulated a large fortune, the greater portion of which he bequeathed to various public institutions. He had the reputation of being a highly honorable man, and died at an advanced age, much respected by all who knew him. At the annual meeting, May Ist, the Custodian reported that there were now held every week meetings of the general Society, or of the sections of Entomology and Microscopy. There had been thirty-five meetings of the Society; forty-four communications on various branches of natural history had been read; forty-one Resident, seven Corresponding, and four Honorary Members elected. The first number of the Memoirs in quarto had been issued, and the first quarter of Volume XI of the Proceedings completed. The museum had been open one hundred and one days, with an average of three hundred and twelve visitors per diem. The Library had increased in size, mainly through the efforts made to effect exchanges for our publications by the Librarian when in Europe. It will perhaps surprise readers to learn that an amount equivalent to 400,000 octavo pages of the publications of the Society had been sent away during the year. The donations to the cabinet had been less numerous than usual. Including the bequest of Miss Pratt, there’ had been added 20,202 specimens. Among these and worthy of mention, was a valuable collection of volcanic specimens from the Hawaiian Islands, pre sented by Mr. Wm. T. Brigham. 120 HISTORICAL SKETCH OF THE The Treasurer’s report showed receipts from all sources, of $13,281.23, and expenditures of $11,022.93. There had been no essays offered in competition for the annual Walker prize. The changes in the officers at the election were in Alpheus Hyatt beg chosen Curator of Palaeontology in place of Thomas T. Bouvé; J. Eliot Cabot, Curator of Ornithology, in place of Dr. Henry Bryant, deceased ; and Edward 8. Morse, Curator of Conchology, in place of Alpheus Hyatt. At a meeting in June of this year, the death of Thomas Bulfinch, long a member of the Society, and for six years its Recording Secretary, was announced by the Rey. R. C. Water- ston, with appropriate remarks upon his life and character. Mr. Bulfinch was deservedly held in great esteem by all the members of the Society. His faithful devotion to his duty, his genial manner, his loving and sympathetic nature, all conspired to endear him to them and to make his loss deeply felt, particularly to those with whom he was associated in the work of the Society in earlier years. On motion of Dr. C. T. Jackson, Mr. Waterston was requested to prepare a fitting trib- ute to the memory of the departed for the Proceedings, which he did by an exceedingly interesting sketch of his life and character, and which may be found in Volume XI. The following is a brief abstract from this paper. Thomas Bulfinch was born July 14th, 1796, at Newton, Mass. He was the second son of Charles Bulfinch, whose reputation as an architect at that day stood among the highest in the profession. Graduating from Harvard University in 1814, he numbered among his classmates Prescott the historian, the Rev. Dr. Greenwood and the Rey. Dr. Lamson. After leaving college, Mr. Bulfinch was chosen usher in the Latin School. Here he remained fourteen months, when feeling no very strong inclination for either of the profes- sions, he entered upon the active duties of a business life. Two years were thus spent in Boston, when he was led to remove to Washington, where his father was engaged as archi- tect in the erection of the Capitol. Here he resided seven years, when in 1825 he returned to Boston, entering into a copartnership with his relative, Mr. Joseph Coolidge. This con- nection continued until 1832, when he was chosen to a responsible position in the Mer- chant’s Bank, which he held until his death, a period of thirty years. Devoted as he was to the duties devolving upon him as a man of business, he had tastes aside from this, yet more congenial to his nature, which he followed with quiet but persis- tent enthusiasm. Thus it was that he became an active member of the Society and its Recording Secretary. His mind balanced for a time between science and literature. There was that in both which awakened his admiration and exerted an attractive power. At length, literature gained the ascendancy, though science always continued to possess a peculiar charm. In 1855 he published the Age of Fable, in which he relates the stories of Mythology, Greek and Roman, in a way to render them attractive to the lovers of general literature. This was followed in 1858, by a volume on the Age of Chivalry, or the Legends of King Arthur, presenting in the same spirit pictures of a later age. In 1863 he published the Legends of Charlemagne, or the Romance of the Middle Ages. There were other works of less importance, all of which were the fruit of care, written in hours rescued from the pressure of active business. BOSTON SOCIETY OF NATURAL HISTORY. it Mr. Bulfinch devoted much time to social intercourse among a circle of friends who highly appreciated his worth. Modest he was, but not morose, for a more genial and gen- erous nature could not be found. Keenly sensitive to the gentle sympathies of life, he truly lived in his affections, and never was he weary of extending kindness, not only to companions and friends who valued his friendship, but to the needy and tried, young or old, whoever they might be. Much more might be said of Mr. Bulfinch, but it is not needed. His excellences were familiar to all. His quiet and respectful manner, his gentlemanly consideration, his conscientious fidelity, his love of learning, his Christian trust and faith; these were an indispensable part of himself. Members of the Society and other visitors to the Library will recall with pleasure, not unmixed with sadness, a very agreeable young lady of great excellence who at this period and for several years was an assistant in the Library. Her beauty of person, her vivacity, her pleasing address and manners, combined with her intelligence and readiness to meet all the requirements of her position, made her a general favorite. She was the daughter of the Rev. Mr. Blaikie, a Presbyterian clergyman of the city. She left the service of the Society because of her marriage, and soon after died, to the great grief of all who had been associated with her. It was quite apparent before the close of this year that further assistance than what had hitherto been employed was required in the Museum, if the collections were to be pre- served from ruin. It was therefore voted in Council to employ Mr. F. G. Sanborn as assistant in the Museum from the Ist of January, to act under the direction of the Cus- todian. Two courses of lectures were authorized by the Society for the winter of 1867-8. One given by Edward $. Morse, consisting of six on the natural history of the mollusca, or shell fish, on Saturday afternoons, commenced Dec. 7th, and continued weekly. The other by Horace Mann, consisting of eight, on structural botany, commenced March 7th. The lecturers were paid $25 for each lecture, and an admission fee of $1 for the course was charged those who attended. The cost of giving these lectures exceeded the amount received from the sale of tickets, $114.37. 1868. From the Report of the Custodian, made at the annual meeting in May, we learn how much had been done durmg the year towards preparing unfinished portions of the building for use. Besides the lecture room, in which for the first time the annual meeting was held, the rear library room had been furnished for use and was now occupied, two exhibition rooms fitted up, and new cases built for several of the departments. A printing office had been prepared in the basement, and the Janitor’s apartments remod- elled. There had been twenty general meetings of the Society, seven of the Section of Micro- scopy, and nine of that of Entomology. The average attendance at the general meet- ings was about forty, and at each of the sections about nine. There had been eighty-six communications made, of which fifty-six were at the general meetings of the Society, the others bemg at meetings of the Sections. One Honorary, two Corresponding, and forty Resident Members had been elected. 122 HISTORICAL SKETCH OF THE There had been issued of the publications of the Society, the second and third parts of the Memoirs, and the fourth and concluding part of the first volume was in press. The eleventh volume of the Proceedings had been completed, and a new edition of six signa- tures of the eighth volume printed. Great additions to the Museum had been made during ‘the year, the most important being a very fine series of humming birds, embracing over 700 specimens, com- prising about 500 species, from Mrs. Henry Bryant; a large collection of eggs, number- ing 1500 specimens, comprising more than 550 species, from the same lady; a collection of more than 2000 Guatemalan birds purchased; a large donation of several thousand rock and fossil specimens from Dr. C. T. Jackson; and a collection of skulls from Arizona, given by Dr. J. W. Merriam. The collections of the several departments were reported generally to be in good con- dition, though that of Entomology had suffered some injury from the ravages of Anthreni. These pests, had however, been entirely eradicated, and it was hoped that by constant vigi- lance they would be prevented from doing farther harm. Some remarks made by the Custodian before closing his report, are worthy of notice. He said, in referring to the erowth of the Society: “The small collections received at first had a certain charm of novelty which attracted the lovers of nature, and were undoubtedly a principal means of sustaining the interest of its members; but the times have greatly changed ; for while the number of members who give their personal attention to the care of the collections is scarcely greater than in former years, the collections have increased an hundred fold, and the ratio of increase does not seem to lessen. Now it is manifestly impossible for such a state of things to continue, if the Museum is to maintain an appearance creditable to the name and honor of the Society. On this account several years ago a regular Custodian was appointed ; for the same reason the Council found it necessary, within a few months, to engage the services of a regular assistant, whose labors have been already felt in every department. On similar grounds, I believe that im a short time, the services of many assistants will be indispensable; indeed I am convinced that at least one or two more are needed at the present moment, and that from this time forward the greater part of the work of the Museum should be done by regular salaried assistants, under the direction of the officers.” The report of the Treasurer showed, including all sources of income available for gen- eral purposes, an excess of expenditures over receipts of $208.05. Dr. J. C. White, notwithstanding urgent solicitation that he would continue to hold the position in which he had faithfully served the Society, positively declmed reélection. He had been Curator of the department of Mammals and Comparative Anatomy for nearly ten years, devoting a considerable portion of his time to laborious work upon the collec- tion, not a small part of which his wise and skilful management saved from destruction. He was, moreover, very efficient in obtaiming specimens for the department, thus contrib- uting to its large increase. At the election, all the officers were re-chosen excepting Dr. White. No one was sub- stituted in his place. It may be remembered by the reader that in 1857 permission had been given to mem- bers to bring with them to the meetings ladies of their families and such others as they BOSTON SOCIETY OF NATURAL HISTORY. 123 might choose to invite, and that the temporary effect of this at least had been beneficial, leading to a better attendance on the part of the members themselves. As stated subse- quently, there is no record of the permission having been withdrawn, but as ladies ceased to attend, it is fair to presume they did so from lack of interest in the proceedings. Twenty years had elapsed, and again an effort was made to have their attendance. The Council at a meeting in June of this year voted: “That members have permission to invite ladies to attend the second meeting of each month.” Previous to the summer recess the Lecture Committee of the Council reported in favor of having three courses of lectures during the next succeeding winter, one course of four by Dr. Jeffries on the anatomy of the eye, one by Mr. W. H. Niles, of ten or twelve on the Geological History of North America, and one by Mr. Wm. T. Brigham on some botanical subject. The report was accepted and adopted. In October Dr. Burt G. Wilder resigned his position as Curator of Herpetology, being about to remove from the State. November 18th, Dr. Chas. F. Folsom was elected Curator of Comparative Anatomy, and J. A. Allen Curator of Herpetology. In November the death of Mr. Octavius Pickering, long a member of the Society and one of the founders of the Linnaean, was announced with appropriate remarks by the President. At the next meeting, the Society was called upon to deplore the loss of another member by the death of Mr. Horace Mann, the youngest officer in its service, Curator of Botany. The remarks upon the occasion by Mr. Wm. T. Brigham, his intimate friend, were very appropriate and the following particulars are abstracted from them. In his earliest youth Mr. Mann imbibed a love of nature from the teachings of his father, and in opposition to the advice of many of his friends who wished him to have a collegiate education, entered the school of Prof. Agassiz as a student of zodlogy and geology. He was at the same time deeply interested in botany, and it was from this taste that his friend- ship with the speaker commenced. In company they visited the Hawaiian Islands and studied the peculiar flora of that group. Soon after his return -to Cambridge, Mr. Mann was appointed assistant to Dr. Gray, and subsequently instructor in botany in Harvard College. Besides the work of arranging the Thayer Herbarium, and of aiding Dr. Gray both in preparing material for his classes, and in revising proof for his two botanical man- uals, he worked steadily in spare hours, often late into the night, upon his Hawaiian col- lections, many thousand specimens of which were determined, labelled and distributed. His enumeration of Hawaiian plants, which has given him a good botanical reputation, was published by the American Academy of Arts and Sciences, of which body he was elected a fellow on the very evening of his death. As the result of these Hawaiian explorations, five new genera and sixty-seven new species were added to the flora. Early in October, Mr. Mann yielded to the solicitations of his friends, and resigned his college classes; but the worst forms of pulmonary complaint had gone too far to be checked; and although at times his recovery was hoped for, he continued to fail rapidly, and passed away on the evening of November 11th. 1869. Mr. Edward S. Morse, then residing in Salem, was engaged to work on the shells of the Pratt collection, for three alternate days of each week through the year, the other three days being devoted to work on the collections of the Peabody Academy. 124 HISTORICAL SKETCH OF THE A new arrangement was also made with the Custodian, by which he was to give his undivided attention to the duties of the position through the year, with the exception of five weeks between the first of May and the first of November, and three weeks between the first of November and the first of May, he to have permanent assistance in the Library and Museum. Upon application to the City Government, two police officers were detailed for duty at the Museum on public days of exhibition. An idol obtained in purchasing other objects from Guatemala was, by vote of the Coun- cil, presented to the Peabody Museum. Authority was also obtained from the Marine Society by which the antiquities formerly given by that institution were transferred to the same Museum. The Trustees of the Society, after calling attention to the greatly increased expenses of the year, and mentioning the necessity arising therefrom to sell stocks to the amount of $4,000 to meet indebtedness, made a protest against such large expenditures. The Council voted that authors should be allowed twenty-five copies of their productions from the publications of the Society, free of expense. From the Report of the Custodian at the annual meeting in May, and doings of the Society for the year ending May, 1869, may be learned as usual much of interest. There had been twenty general meetings of the Society, ten of the Section of Entomology, and six of Microscopy. At the general meetings, the average attendance of members had been thirty-three, of the Section of Entomology twelve, and of that of Microscopy eight. The number of ladies who attended in response to the invitation of the Society, of course is not included. Very few, however, availed themselves of the opportunity offered. One hundred and five scientific communications had been presented by forty-nine persons, of which the titles are given in the report. Five Corresponding and twenty-nine Resident Members had been elected during the year. There had been three courses of lectures given during the winter and spring ; the first by Dr. B. Joy Jeffries, consisted of four upon Optical Phenomena, the second by Mr. W. H. Niles, of twelve upon the Geological History of North America, and the third by Mr. Wn. T. Brigham, of twelve upon Plant Life. The first, not having been advertised and the subject being of limited interest, failed to draw many hearers, the second was attended by an average of sixty-six persons, the third by an audience averaging about ninety-nine per- sons. The last course was in the evening, which may in part account for the greater attendance. The Custodian dwelt with satisfaction upon the large amount of the Society’s publica- tions, as well he might if only their extent and value were considered, and the consequent cost ignored. When, however, it is learned that what was done in this way led to an excess of expenditures over receipts to the amount of thousands of dollars, and obliged the Trustees of the property of the Society to encroach largely upon its capital to meet this excess, one is inclined to judge there was little cause for exultation. A few years of such lavish expenditure could have had but one result. The issue from the press of the publications of the Society had been double that of any previous year, being not less than an equivalent of one thousand two hundred and twenty- nine octavo pages. The twelfth volume of Proceedings begun a year previous, had BOSTON SOCIETY OF NATURAL HISTORY 125 reached the four hundredth page. The annual report, the first issue of the publication called the “ Annual,” a physical map of North America, the fourth part of the Memoirs, and the first volume of the Occasional papers had all appeared, the latter containing the Entomological correspondence of the late Dr. T. W. Harris, embellished with steel plates and wood cuts. It will be remembered that in 1867, an appropriation of $500 was made by the Council towards the expenses of some explorations to be made under the auspices of the Smith- sonian Institution, with the understanding that the Society should receive the first choice among the duplicates of objects of Natural History collected by the explorers. Under this arrangement the Society received within the first year a series of birds from the Island of Socorro, the natural history of which had been explored by Col. Grayson. The specimens received were of peculiar interest, being nearly all new to science, and distinct from the species of the neighboring continent, or of islands nearer the coast. Only a portion of the sum appropriated having been called for, the Council again voted in 1868, that $200 should be at the disposal of the Smithsonian Institution for further explorations by Col. Grayson in Central America, and $100 towards an expedition to be made by Prof. Sumichrast in Tehuantepec, the $500 being what remained unexpended of the original appropriation. During the past year, after leaving the Island of Socorro, Col. Grayson had been study- ing the natural history of the Sierra Madre, from which, however, returns had not been made of objects obtaimed by him. A fine collection of birds had, nevertheless, been pre- sented to the Society, by Prof. Henry of the Smithsonian Institution, collected at Costa Rica. From the Isthmus of Tehuantepec, for the exploration of which by Prof. Sumichrast the Society contributed $100, news had been received of a very promising character. The Smithsonian Institution had already received specimens which had been distributed for identification. One of our own members, Mr. W. H. Dall, had been employed by the Society for sey- eral months selecting specimens from the Smithsonian duplicates, partly in return for the contributions made by the Society towards the explorations referred to, and partly as a donation from the Institution. Already many fossils and mollusks had been received by the Society, and a collection of the nests and eggs of birds was expected to arrive. The visitors to the Museum had exceeded thirty-six thousand. It had been open to the public one hundred and four days. In the department of Mammals and Comparative Anatomy, a movement had been made towards obtaining specimens of all our New England mammals, and to make room for them, the Ethnological collection was to be removed. A black bear and an antelope, one the donation of Mr. W. T. Adams, the other of the City, had already been received. The collection of birds had been increased by a donation of twenty-five specimens of the land species of Massachusetts, from Mr. L. L. Thaxter of Newton. Mrs. Bryant had again shown her interest in the Society by the gift of a large and valuable collection of unmounted birds from the West Indies and Central and North America, and from Pro- fessor Henry of the Smithsonian Institution, eighty specimens from Costa Rica had been received, all labelled by Mr. Lawrence. 126 HISTORICAL SKETCH OF THE The collection of Nests and Eggs of birds had been entirely rearranged. A statement was made showing the collection at this time to consist of the eggs of seven hundred birds, of which four hundred were American. A large number of duplicates, valuable for ex- change, had been presented by Mrs. Bryant, and about two hundred and fifty nests and egos by the Smithsonian Institution. The Curators of the departments of Reptiles and Fishes mentioned great deficiences in the representation of Massachusetts species, and in the latter the need of help in order to identify and label the specimens. The Entomological collection was stated to be in better condition than it had been a year previous, much attention having been given to its improvement and preservation. In referring to the condition of the department of Mollusks, the Custodian made some remarks of more than temporary value. With the exception, he stated, of work done by the last Curator, there is no evidence of any attention having been bestowed upon the specimens for fifteen years. It was now in a worse condition than it had been years before, showing that gratuitous aid had proved a failure. The Curator’s entire attention had been given to the Pratt collection, the arrangement of which would be completed before other work was done in the department. Of the other collections nothing was said of sufficient importance to repeat here. The report of the Treasurer was startling. It showed an excess of expenditures over receipts of more than $6,000, and a diminution in the value of the Society’s property of over $13,000. Much of this latter was accounted for by the reduction in the estimated value of the stocks which had been received under the Walker bequest, but it was only too evident that there had not been a due economy exercised in the administration of the business of the Society. Well might the Trustees protest as they did, and well it was, too, that the Council heeded their warning. The lesson taught was not lost upon the members, and finally led to measures tending to prevent, under any ordinary circumstances, more expense of means than income warranted. Among these was that of requiring from the Trustees at the commencement of each year an estimate of the probable receipts from the various sources tabulated, and also one showing what expenditures might be incurred in the different departments based upon such receipts; there being a clear understanding that under no avoidable circumstances should there be expended more than the income. This met the hearty approval of all, and the policy adopted has been faithfully adhered to ever since. It was not, however, intended that the expenditure yet necessary in finishing the rooms of the Museum and in supplying cases should be paid for from the ordinary income. Whatever was done in this way it was expected would necessarily be paid for in part, at least, from the principal of the Society’s property. At the meetings of the Coun- cil following the general meeting, there was much discussion concerning retrenchment, a strong disposition being manifested to reduce expenses within the probable imcome. At a regular meeting in. June the Rev. Robert C. Waterston reminded the members of the approaching centennial anniversary of the birthday of Humboldt, and suggested the public celebration of it by the Society. He remarked that it was wholly unnecessary in such a presence to speak of Alexander Von Humboldt in order to impart information con- cerning one whose illustrious reputation in so many departments of knowledge had made his name familiar over the civilized world. Yet in view of what he had done for science BOSTON SOCIETY OF NATURAL HISTORY. 127 by his explorations on this continent, it seemed particularly appropriate that a Society like this should do honor to his memory. He further remarked that there was one among the members, preéminent in science, who had been his pupil and his personal friend, Louis Agassiz, who was specially qualified to speak upon such an occasion. That to hear him menof science and letters from every part of the country would gladly assemble to listen and to respond. Although the matter had not been apparently thought of by any of the members, all present heartily concurred in the sentiments expressed by Mr. Waterston, recognizing that in the Society thus paying a tribute of respectful homage to one of the noblest of men, it could not but do itself great honor. The proposal therefore met with a hearty response, and the following resolution, offered by Mr. Waterston, was unanimously adopted: “ Resolved, That it is highly desirable that the Boston Society of Natural History should hold a public celebration of the centennial anniversary of the birth of Alexander Von Humboldt, and that a committee of five be appointed to consider the whole subject and empowered to make all arrangements.’ The President appointed on this committee the Rey. Robert C. Waterston, Dr. Samuel Kneeland and Mr. Samuel H. Scudder. To these were subsequently added the President, Jeffries Wyman, His Honor the Mayor, N. B. Shurtleff, and Col. T. W. Higginson. It is due to Mr. Waterston to state that a large part of the work attendant upon the celebration was done by him. That it might be a thorough success and redound to the credit of the Society and the community, he gave up his whole time to it, remain- ing in the city during the hot summer months, and exerting himself to the utmost that nothing might be left undone that would add to the interest of the occasion. He not only arranged for the meeting at which the address was to be delivered, but for a reception in the evening, at which distinguished men should be invited to speak, and he induced the City Government to take part in it and to provide an entertainment at the expense of the City. The celebration which followed on the 14th of September was in every respect a success, far exceeding the anticipations of all who had favored it. Probably nowhere throughout the civilized world was the day more appropriately observed. The address by Agassiz was worthy of the man and the occasion. It was delivered at the Music Hall» before an audience which filled every available place in it. Delegates from the leading literary and scientific societies of New England and representatives from the colleges of Yale, Bowdoin, Brown, Dartmouth and Harvard were present, as were likewise His Excellency the Governor of the Commonwealth, His Honor the Mayor of the City and members of both branches of the City Government. President Wyman presided at the meeting. The evening reception was at Horticultural Hall. A large and distinguished audience attended it, including invited guests from literary and scientific societies, members of the City Government, and many gentlemen interested in the cause of education from every part of the country. Interesting mementos of Humboldt, including several portraits of him, were placed upon the platform and about the hall. The Rev. Mr. Waterston pre- sided, and after welcoming the delegates from the different societies present and mak- ing some appropriate remarks, introduced successively the Rev. Frederick H. Hedge, Mr. Ralph Waldo Emerson and Prof. E. J. Young, all of whom made interesting addresses. Among the portraits exhibited, was one by Mr. Wight, painted at Berlin in 1852 from life, 128 HISTORICAL SKETCH OF THE when Humboldt was eighty-three years of age. It had been loaned to the committee for the occasion by the artist. The chairman, calling attention to it, stated that an order had been given to the artist to execute an exact copy. - This would be unveiled, and if it was found in every respect satisfactory, he, the chairman, would take great pleasure in pre- senting it on this centennial anniversary to the Boston Society of Natural History. The covering was removed and the resemblance was found to be so perfect as to call forth spontaneous applause. A letter from the artist was read giving an account of his personal observation of Humboldt when he was engaged upon his portrait: Accompanying it was an autograph note of Humboldt, which was also presented to the Boston Society of Natural History by the chairman. In behalf of the Society, Dr. Charles T. Jackson, Vice-Presi- ident, accepted the portrait and autograph with expression of thanks. He stated that Humboldt himself had declared that the original by Wight was the best ever painted of him. Dr. Jackson then gave some pleasant reminiscences of Humboldt, whom he had often met in Paris at Cuvier’s lectures in 183). He also made some interesting remarks upon his works and character. The chairman then called upon his Honor the Mayor, who, in responding briefly, said that the City Government, being desirous of expressing its respect for the memory of Alex- ander Von Humboldt, had passed resolutions and had made a generous appropriation. In behalf of both branches, he invited all present to partake of a collation prepared for them in the hall below. The company accepted the invitation and proceeded to the place assigned, where they enjoyed an excellent supper, during which at intervals the Ger- mania band added their enlivening music to the entertainment. After refreshment at the tables, a poem upon Humboldt, prepared for the occasion by Oli- ver Wendell Holmes, and another by Mrs. Julia Ward Howe, were read. During the even- ing, several communications from distinguished persons unable to be present, were pre- sented, one from the Hon. Theo. 8. Fay, one from Prof. William B. Rogers, one from the Rev. Noah Porter and one from John G. Whittier. The address by Agassiz, with a full account of the proceedings at the evening meeting, may be found in pamphlet form published by the Society. In October, Dr. C. F. Folsom resigned his position as Curator of Comparative Anatomy and Mammals. At a meeting of the Council, held Nov. 17ta, it was voted that the net proceeds of the celebration of the Centennial Anniversary of the birth of Humboldt, together with the money received from the sale of Prof. Agassiz’s address previous to Jan. 1, 1870, and the money subscribed at the solicitation of the Society’s Committee, be given to the Trustees of the Museum of Comparative Zodlogy at Harvard College, in trust, for the establishment of an endowment under the title of the “ Humboldt Scholarship,” the income of which should be solely applied, under the direction of the Faculty, toward the maintenance of one or more young and needy persons engaged in study at said Museum. The reception of the money, amounting to $7,040.66, was gratefully acknowledged by the Trustees of the Museum of Comparative Zoblogy, under the conditions expressed in the vote of the Council. . BOSTON SOCIETY OF NATURAL HISTORY. 129 Mention was made in giving an account of the proceedings at the evening reception on the day of the Humboldt celebration, of a fine portrait presented by the Rev. Mr. Waters- ton to the Society. This may now be seen in the Library of the Museum. The hearty thanks of the Society were passed to Mr. Waterston not only for the val uable portrait and autograph, but for the unflagging energy with which he had labored for the success of the Humboldt celebration. Testimony was borne to the untiring zeal manifested by him in obtaining subscriptions for the fund, and in performing a large part of the work consequent upon the celebration. The Society also expressed its obligations to Prof. Agassiz for his able address, a copy of which was asked for publication. Thanks were also voted to the Orpheus Musical Association, and to Mr. Carl Zerrahn, for their wel- come aid in the performances of the occasion; also to Mr. J. H. Paime, who presided at the organ. 1870. On January 19th, Dr. Thomas Waterman was elected Curator of Comparative Anatomy and Mammals. At the meeting of April 20th, in view of contemplated changes in the administration of the Society, certain alterations were made in the Constitution and By-laws to go into effect on and after the annual meeting. The most important of these arose from the sub- stitution of Committees for Curators in the care of the Museum. The Constitution was made to express that the officers of the Society shall consist of a President, two Vice-Presidents, a Corresponding Secretary, a Recording Secretary, a Libra- rian, a Custodian and a Committee of three on each’ department of the Museum, etc., etc. The By-laws were so altered as to define that the Committees should be entrusted with the care of the Museum; that they should be designated for particular departments at the time of their election, and consist of not more than three members, one of whom should be named by the nominating committee to act as chairman. The duties mentioned were such as the By-laws previously active expressed for those of the Curators. Annual meeting. The Custodian’s report gave the following summary of the doings of the Society during the year: There had been eighteen general meetings, the average attendance at which had been thirty-two: eight of the section of Entomology, with an average attendance of eleven: and seven of the section of Microscopy, with an average attendance of nine. Forty-seven scientific communications had been made by twenty-five persons, all of which had been printed in full or by title in the Proceedings. | One Honorary, three Corresponding and thirty-nine Resident Members had been elected. Three courses of evening lectures had been arranged for by the Council. One of twelve, entitled Sketches of Animal Life, by Mr. Edward 8. Morse, delivered in the early part of the season, had an average audience of seventy-six persons; the second, consisting also of twelve, given by Mr. William T. Brigham, entitled The Earth we live on, had an audience averaging ninety-ecight persons; the third, not concluded at the time of the annual meeting, consisted of four, entitled Familiar Talks about Insects, given by Mr. F. G. San- born. The average attendance at these was about sixty. Of the Publications it was stated that from economical considerations the issue of a large number of the Memoirs had been postponed. Of the Proceedings the twelfth volume had been printed, and a part of the thirteenth. The address of Prof. Agassiz at the recent cele- 150 HISTORICAL SKETCH OF THE bration of the Humboldt Centenary, with an account of the evening’s festivities, forming an octavo pamphlet of one hundred and seven pages, had been also published and dis- tributed. The Custodian expressed strongly the feeling that a further postponement of activity in this direction could not fail to be disastrous. Yet there had been sent abroad of parts of Memoirs and of the Journal, of copies of Harris’ Correspondence, of the Pro- ceedings, what was equivalent to about two hundred and sixty-five volumes of the Pro- ceedings, and over 200,000 octavo pages. Besides all this the Society had distributed in behalf of the Commonwealth, three hundred copies on the Report of the Invertebrates of Massachusetts, recently published by the State. The judicious action of the Legislature, the Custodian remarked, in placing its scien- tifie publications where they will be of the greatest permanent benefit, merits the com- mendation of all who, like ourselves, are aiming at the widest diffusion of knowledge. An enumeration of the books in the Library had been recently made. They were counted as bound, whether containing more than one volume, as frequently the case, or not; and the parts had been estimated at their proper proportions of the volumes to which they belong, and the pamphlets counted separately. ‘The enumeration therefore gave the number as proportionably smaller than previous estimates. There were found to be 9396 volumes, and 2677 pamphlets. Of these volumes ten hundred and ten were of a general literary character, mostly deposited by “ A Republican Institution ”; eight hun- dred and six were botanical; four hundred and fifty-three entomological; four hundred and two geological and mineralogical; five hundred and ten encyclopaedic; six hundred and thirteen upon vertebrates; five hundred and thirty-six upon travels and local fauna, and forty-one hundred and seventy-three journals and publications of Societies. The Custodian announced the death of our esteemed coadjutor, Col. A. J. Grayson, to whose explorations it will be recollected the Society contributed im connection with the Smithsonian Institution. It had been the strong wish of both parties interested, that he should visit the Sierra Madre of North Western Mexico, that he might make there a care- ful investigation of its fauna. He arranged to be there in June, that being considered the most favorable month for his purposes. Prior to that period he visited the Island of Isabella off the coast to study the habits of sea fowl during their breeding season, and there he contracted a malarious disease that led to his death in August. The amount contributed by the Society bemg unexpended, was returned by his wife to the Smithsonian Institution. By advice of Prof. Henry, this was transferred by vote of the Council to Prof. Sumichrast, to be used in the explorations undertaken by him on the Isthmus of Tehuantepec. An arrangement had been made by the Custodian with the Secretary of the Smith- sonian Institution, by which a large number of unassorted specimens of various character were sent to the Society with the understanding that they should be returned in orderly condition, compensation for the labor being made by a selection from the duplicates for the Cabinet. The number of visitors to the Museum during the year exceeded forty thousand. It was open to the public one hundred and four days. The largest number present on any one day was seven hundred and eighty-one. BOSTON SOCIETY OF NATURAL HISTORY. 3t The Custodian reported the collections of the different departments of the Society to be in good condition. That of Mammals and Comparative Anatomy had received a stuffed specimen of the great Antarctic seal collected in the exploring expedition of Commodore Wilkes. A living opossum and its young had also been received from Dr. C. Kollock of South Carolina, and had been mounted in characteristic attitudes. Other interesting specimens had been received from the Union Street menagerie. In the Ornithological department, the mounted birds had had special attention, every specimen having been taken down, thoroughly examined, and where necessary treated with benzine and other materials. The cases had all been made as nearly air tight as pos- sible and in fact every possible measure adopted to prevent the further ravages of insects. To accomplish this, four or five persons had worked continuously for two months. Dona- tions had been received from the Smithsonian Institution, F. E. Everett, 8. Mixter, H. A. Purdie and others. Quite extensive additions had been made to the collection of nests and eggs, mostly in exchange. To Mr. B. P. Mann and Mr. S. Mixter, the department had been indebted for the presentation of many specimens. The Entomological collections were reported in better condition than at any time within ten years. Mrs. Stratton, Mr. H. Edwards and others, had presented many specimens, and there had been a valuable accession from Tehuantepec collected by Professor Sumichrast. There had been considerable work done upon the Reptiles, and one hundred and fifteen specimens had been added to the collection. A marked deficiency of native species was mentioned, particularly of turtles. The Fishes, numbering three thousand eight hundred and ninety-six specimens, were reported in good order and mostly identified. Some work had been done by Mr. 8. I. Smith upon the Crustacea, and the whole collec- tion placed in satisfactory condition. , The Curator of Mollusks reported much progress in mounting the gasteropods of the Pratt collection, and mentioned that a valuable series of British shells had been received from the Smithsonian Institution, and many specimens from Mr. H. Edwards and others. The collection of Radiates had been greatly improved, and a large portion of the corals and sponges mounted in an erect position upon black tablets. The Botanical department had received an important addition in the herbarium of Hon. John Amory Lowell, containing many thousand species carefully labelled, mounted aud catalogued. By the subscription of some gentlemen, a ring of the bark of a Redwood tree of Califor- nia had been purchased, measuring forty feet in circumference. This had been mounted under the direction of Mr. Brigham, the acting Curator, and now forms a conspicuous object in the entrance hall of the Museum. The arduous task of rearranging and labelling the entire Mineralogical collection had been completed by the Curator, and the whole was now in perfect order. The number of specimens was about 2800. Mr. 8. H. Scudder, the Custodian, in presenting the annual report, took occasion, as this was to be the final one by him, to review somewhat at length the experience of the Society in the past, and to suggest considerations in relation to its future policy. He said that “while some collections need a good deal of revision and many are not yet entirely 132 HISTORICAL SKETCH OF THE supplied with the uniform system of labelling lately adopted, the Museum is in much better order and in a much safer condition than it has been at any time since our removal to this buildmg. The Library has increased, and the lectures have proved a success, but in our publications and in the interest of our meetings, we have sadly fallen off” The Custodian further remarked upon the great importance of the publications of the Society as a means through which the researches of the members might be promptly made known, and the fame which it has fairly won at home and abroad be sustained. In relation to the Museum, after mentioning its large collections, he expressed the view that, with some exceptions, they embraced sufficient for all the purposes of the Society. That its principal aim should not be to sustain a great museum or an industrial one, but rather seek to maintain first, a popular educational one, in which all and none but the characteristic forms of life and inorganic nature should be displayed, and second, a com- plete local collection, restricted at widest to our New England flora and fauna. To effect this, it was important that more skilled labor should be regularly employed, and a man of broad scientific culture placed at the head of the Museum, with its interests alone in charge. The Custodian then spoke of his endeavors to faithfully perform the duties of his office, and expressed warmly his appreciation of the devotedness of those who had been engaged to assist him in the various departments of the Society’s operations. Upon motion of Mr. F. W. Putnam, who thought something more was due the retiring Custodian than a simple vote of thanks for his services, it was unanimously voted that the rules be suspended and Mr. Scudder be made a Life Member of the Society. The Treasurer’s report showed, including all sources of income available for general pur- poses, a balance of receipts over expenditures, of $160.49. The Prize Committee reported through Dr. J. B. 8. Jackson, that only one essay had been offered in competition for this year’s prize, and this was not deemed worthy of it. They announced for the subject of the prize for 1872, “The Darwinian question ; its bear- ings on the development of animal life.” Letters from the President, Dr. Jeffries Wyman, at this time in Europe, positively declin- ing to be a candidate for the office so long held by him, had been received. The Nomina- ting Committee however, thinking that he might be induced again to accept the position, asked further time for consideration before any action was taken in electing a President. They also asked further time before presenting names for the Committees on the depart- ments of Mammals and Comparative Anatomy, as the Council had, but a few hours before the meeting, divided the department of Comparative Anatomy, which before embraced Mammals, into two departments. They likewise asked further time before nominating the Committee for the department of Microscopy. The list of officers proposed by them was then presented, the Rev. Joshua A. Swan being named as the successor to Mr. S. H. Scudder, for the positions of Custodian, Librarian and Recording Secretary. A strong objection was made to the nominee for the former office, many present favoring the election of Mr. Alpheus Hyatt. A prolonged and very earnest discussion followed, the whole policy of the Society and the comparative merits of the two persons mentioned for the position being ably presented. Those who participated in the discussion were N. 8. Shaler, J. B. S. Jackson, J. C. White, E. 8. Morse. R. C. BOSTON SOCIETY OF NATURAL HISTORY. 133 Go Greenleaf, F. W. Putman, W. H. Niles, T. M. Brewer, W. T. Brigham, J. D. Runkle and Thomas T. Bouvé. Upon balloting, it was found that Mr. Alpheus Hyatt was elected Custodian and Mr. Swan, Librarian and Recording Secretary, the majority of the members thus electing two officers to fill the three positions, instead of one as hitherto. One objec- tion to this was the largely increased expense thereby incurred, but the result was gener- ally satisfactory. The Committees chosen for the several departments were as follows : On Birds. Thomas M. Brewer, M. D., Samuel Cabot, M. D., J. A. Allen. On Mollusks. Edward 8. Morse, John Cummings, Levi L. Thaxter. On Fishes and Reptiles. On Palaeontology. D. Humphreys Storer, M. D., W. H. Niles, F. W. Putnam, N.S. Shaler, N. E. Atwood. Thomas T. Bouvé. On Insects. On Botany. F. G. Sanborn, William T. Brigham, A. 8S. Packard, Jr., M. D., Charles J. Sprague, Edward Burgess. J. Amory Lowell. On Crustacea and Radiates. On Minerals and Geology. A.§. Packard, Jr., M. D., Thomas T. Bouvé, A. E. Verrill, Charles T. Jackson, M. D., Alexander Agassiz. William T. Brigham. The election of Committees for the departments of Comparative Anatomy, Mammals and Microscopy was postponed to allow time for further consideration. The fourth decade of the existence of the Society was now completed. It had been a period of great events in its history. Its commencement found the country involved in a war which, by rapidly wasting its resources, threatened alike its material prosperity and its progress in art, science and literature. There was sadness in the hearts of men and an undefined dread of evil pervading their minds, tending to concentrate all thought upon the movements of armies and the tidings of conflict. Thank God, too, there was an unfalter- ing faith im the final success of the struggle for the nation’s integrity, which kept alive hope and encouraged exertion for the advancement of all movements promising future good to the community. Thus was it that m the midst of a dreadful civil war the Society was enabled, through the untiring devotion of its own members and by the exertions, the contributions and bequests of many friends, to erect the fine structure that now adorns the city, and to place therein the great collections of natural history that now minister to the delight and the instruction of multitudes. In referring to the period of the civil war, it may not be amiss to state that besides the members of the Society mentioned as having resigned their official positions in it to enter the service of their country, there were several others who took an active part in the con- flict. Among them was one whose great interest in the welfare of our institution for 154 HISTORICAL SKETCH OF THE many years as shown by his exertions in its behalf when in distant regions, entitles him to respectful notice in these pages. That he died by the hands of the enemy makes it all the more a duty to render a tribute to his memory. Joseph P. Couthouy was born in Boston, January 6, 1808. He was educated at one of the schools in the town, and when yet a lad, made a voyage in his father’s ship. His tastes leading him to prefer a sea life, he applied himself to the calling he had chosen, and became, when old enough, the captain of a vessel. He early developed a love for science, and had progressed in his studies to such an extent that when the American Exploring Expedition was organized under command of Lieutenant Wilkes, he was appointed one of the scientific corps to accompany it, his spe- cialty being that of Conchology. The expedition sailed from Hampton Roads, Aug. 18th, 1838, and, although the state of his health obliged him eventually to abandon his share of the enterprise at the Samoan Islands, yet he had already made very valuable collec- tions of shells and illustrated his numerous notes and descriptions concerning the many species obtained, with drawings and colorings which would have been of invaluable assist- ance to Dr. A. A. Gould, who subsequently published the elaborate report on the shells secured by the expedition, had not these papers been in some unexplained way lost or destroyed when the cases containing the specimens were unpacked after arrival. Captain Couthouy afterwards went to South America and the islands of the Pacific Ocean, making numberless valuable observations on the natural history of the countries which he visited. In the year 1854, he was engaged to take command of an expedition to the Bay of Cumana, for the purpose of exploring for the wreck of the Spanish man-of-war San Pedro, lost there nearly half a century previously, which was supposed to have had a great amount of treasure on board. After three years spent in an unsuccessful search for this, the vessel returned to the United States, and was lost in a violent snow storm on Cape Cod, the crew being saved with the greatest difficulty. When the war of the rebellion broke out, Captain Couthouy offered his services to the government. They were at once accepted, and he was placed in command of the U.S. barque “ Kingfisher,’ in which he was actively engaged against the enemy. Being trans- ferred to the command of the U. 8. steamer “ Columbia,’ he jomed the blockading squadron of the South Atlantic, and upon his vessel being wrecked in a storm at Mason- boro Inlet, he was captured and sent as a prisoner of war to Salisbury, where he remained three months. After bemg exchanged he was placed in command of the monitor “Osage” of the Mississippi river squadron under Admiral Porter, and subsequently, being transferred to the “ Chillicothe” of the same squadron, was ordered up the Red River. In this expe- dition he met his death. On the 3d of April his ship was engaged with a large body of rebel troops on the shore. Captain Couthouy was on deck directing the fire of his guns, when a rebel sharp-shooter on the bank fired at and mortally wounded him. He died the next day, universally regretted by officers and men, and by no one more than the Admiral, who, in a letter to the Secretary of the Navy, bore witness to his zealous, patri- otic and estimable character. Captain Couthouy was a man of rare and varied ability. He was a fine linguist, and spoke with great elegance the Spanish, French, Italian and Portuguese languages. An BOSTON SOCIETY OF NATURAL HISTORY. 135 interesting example of the beauty of his pronunciation of the Spanish was given the writer by one of his intimate friends. Being in Spain at the time of the Carlist wars, he was repeatedly under suspicion on the part of the officers of the government, who could not believe him to be a foreigner, the purity of his accent and thorough knowledge of the language leading them to think that he must necessarily be a native Spaniard. He had also in the course of his travels mastered more than one of the unwritten languages of the South Pacific Islands. He was described by intimate friends and associates as being a man of the utmost fasci- nation of manner, and one whose wide and varied information made him one of the most interesting of companions. Elected a member of the Society on the 6th of April, 1836, he was often before it while at home, at the meetings, with communications or remarks relating to facts of scientific interest which had come to his knowledge during his wide-spread investigations abroad. He also, from time to time, presented many specimens to the Society. His memory should be held in tender regard by the Society, for while, in former years, an active and valued associate, his death in battle in the service of his country added another to the list of those who have passed away, leaving, through faithful work in the cause of science, a lasting lustre on its roll of membership. Captain Couthouy married Miss Mary G. Wild of Boston. His wife died in 1857, and at the time of his death, in 1864, he had three daughters livmg. His only son had died previously. It having been necessary in quite a number of instances during the first half of this decade to record the fact of several of the officers having resigned or temporarily vacated their positions in order to engage in the military or naval service during the war for the suppression of the rebellion, it is fitting that the part which was taken in the great conflict by members of the Society should be recognized ; and the following roll gives the names and branch of the service to which they belonged, of such as are, or have been, borne upon its list of membership. Dr. Samuel Kneeland, Surgeon 45th Mass. Infantry, Brevet Lieut. Colonel. - Dr. Henry Bryant, Surgeon 20th Mass. Infantry, Brigade Surgeon U. 8. Vols. Dr. Samuel A. Green, Asst. Surgeon Ist Mass. Infantry, Surgeon 24th Mass. Infantry. Dr. Burt G, Wilder, Asst. Surgeon 55th Mass. Infantry. Dr. B. Joy Jeffries, Sergeant Ist Corps Cadets M.V.M., Acting Assistant Surgeon U.S.A. Dr. Francis H. Brown, Acting Assistant Surgeon U. 8. Army, Private 12th unattached company Mass. Infantry. Theodore Lyman, Colonel U.S. Vols., aide-de-camp to Major General Meade. Albert Ordway, Lieut. Colonel 24th Mass. Infantry. Brevet Brigadier General. Amos Binney, Major and Paymaster U. 8. Vols. Dr. John Stearns, Surgeon 4th Mass. Heavy Artillery. Dr. Lucius M. Sargent, Jr., Surgeon 2d Mass. Infantry, afterwards Major Ist Mass. Cavalry. Killed in battle. Dr. Hall Curtis, Asst. Surgeon 24th Mass. Infantry, Surgeon 2d Mass. Heavy Artillery. Dr. Robert T. Edes, Passed Assistant Surgeon U. S. Navy. Dr. Z. Boylston Adams, Asst. Surgeon 7th Mass, Infantry, Surgeon 32d Mass. Infantry, afterwards Major 56th Mass. Infantry. Dr, A. 8. Packard, Jr., Asst. Surgeon 1st Maine Veteran Volunteer Infantry. Dr. Calvin G. Page, Surgeon 39th Mass. Infantry. Dr. Franklin Nickerson, Acting Assistant Surgeon U. S. Navy. Dr. F. P. Sprague, Acting Assistant Surgeon U. 8. Army. Dr. Algernon Coolidge, Acting Assistant Surgeon U.S. Army. HISTORICAL SKETCH OF THE Dr. Edward Wigglesworth, Jr., Hospital Steward 45th Mass. Infantry, Volunteer Surgeon. Dr. J. Collins Warren, Volunteer Surgeon U.S. Army. Dr. Francis C. Ropes, Assistant Surgeon U. 8. Army. Dr. H. M. Saville, Surgeon 4th Mass. Infantry. Dr. George Derby, Surgeon 23d Mass. Infantry, Brevet Lieut. Colonel. Dr. H. P. Bowditch, Major 54th Mass. Infantry, Captain Ist Mass. Cavalry, Major 5th Mass. Cavalry. Dr. John McLean Hayward, Surgeon 12th Mass. Infantry. Dr. C. F. Crehore, Asst. Surgeon 15th Mass. Infantry, Surgeon 37th Mass. Infantry, Medical Inspector on staff of Major General Sedgwick. Dr. Oliver F. Wadsworth, Asst. Surgeon 5th Mass. Cavalry, Brevet Captain U.S. Vols. Dr. Allston G. Bouvé, Private 6th Mass. Infantry. Dr. John Homans, Assistant Surgeon U. 8. Navy, Asst. Surgeon U. 8. Army. Dr. William Ingalls, Surgeon 5th and 59th regiments Mass. Infantry. Dr. William Henry Thayer, Surgeon 14th New Hampshire Infantry. Dr. John C. Dalton, Asst. Surgeon 7th New York V. M., Surgeon U.S. Vols. Dr. 8. W. Langmaid, Acting Asst. Surgeon U. 8. Army. Dr. Charles W. Swan, Acting Asst. Surgeon U.S. Army. Dr. Samuel G. Webber, Asst. Surgeon U. 8. Navy. Dr. Charles B. Porter, Acting Asst. Surgeon U. S. Army. Dr. Frederick S$. Ainsworth, Surgeon 22d Mass. Infantry. Dr. Thomas B. Hitchcock, Asst. Surgeon 42d Mass. Infantry. Dr. George J. Arnold, Acting Asst. Surgeon U. 8. Army. Dr. Charles E. Hosmer, Private, Steward U.S. Navy, Acting Asst. Surgeon U. 8. Navy. Dr. John G. Park, Acting Asst. Surgeon U. 8. Navy. Dr. Charles Thacher Hubbard, Asst. Surgeon U.S. Navy. Dr. James E. Walker, Acting Asst. Surgeon U. 8. Army. Dr. Henry G. Clark, Inspector-in-chief of the Sanitary Commission. Dr. J. Nelson Borland, Inspector of Hospitals for the Sanitary Commission. Dr. Samuel L. Abbot, Dr. Henry I. Bowditch, Boston during the war, and Volunteer Surgeon in the Army. “ oe “ “ Surgeon to the Board of Enrolment in Dr. Samuel Cabot, Jr., Inspector of Hospitals for the Sanitary Commission and Volunteer Surgeon. Dr. William Edward Coale, Dr. Calvin Ellis, Dr. Augustus A. Gould, Dr. J. B. 8. Jackson, Dr. Francis Minot, Dr. Benjamin 8. Shaw, Dr. Charles E. Ware, Dr. Henry W. Williams, Dr. W. W. Morland, “ Dr. Winslow Lewis, &“ Dr. Henry K. Oliver, “ Dr. D. D. Slade, “ Rey. Warren H. Cudworth, Chaplain Ist Mass. Infantry. (79 “ and Volunteer Surgeon. T. Wentworth Higginson, Captain 51st Mass. Infantry, Colonel 33d U. 8. Colored Troops (1st South Carolina Infantry). Francis A. Osborn, Colonel 24th Mass. Infantry, Brevet Brigadier General U. 8. Vols. Joseph P. Couthouy, Acting Volunteer Lieutenant U.S. Navy. Alpheus Hyatt, Jr., Captain 47th Mass. Infantry. Killed in battle. BOSTON SOCIETY OF NATURAL HISTORY. 137 T. W. Clark, Colonel 29th Mass. Infantry. Edward C. Cabot, Lieut. Colonel 44th Mass. Infantry. Hiram 8. Shurtleff, Captain 56th Mass. Infantry. Nathaniel 8. Shaler, Captain 5th Kentucky Artillery. Nathaniel Bowditch, 1st Lieut. Ist Mass. Cavalry, A.A.G. U.S. Vols. Killed in battle. Charles W. Folsom, 1st Lieut. and Q.M. 20th Mass. Infantry. Huntington F. Wolcott, 2d Lieut. 2d Mass. Cavalry. Died in the service. Edward T. Bouyé, 1st Lieut. 32d Mass. Infantry, Captain 4th Mass. Cavalry, Major 26th N. Y. Cavalry. Joseph H. Lathrop, Sergeant 43d Mass. Infantry, Ist Lieut. and Adjutant, ¢ 4th Mass. Cavalry. John E. Alden, 2d Lieut. Ist unattached company Mass. Infantry. Nathan Appleton, 1st Lieut. 5th Battery Mass. Light Artillery, Capt. and A.D.C. U.S. Vols. Louis Cabot, 2d Lieut. Ist Mass. Cavalry, Capt. 2d Mass. Cavalry, Major 4th Mass. Cavalry. Fletcher M. Abbott, 1st Lieut. 2d Mass. Infantry. John Ritchie, 1st Lieut. and Q.M. 54th Mass. Infantry. William E. Endicott, 2d Lieut. 30th unattached company Mass. Heavy Artillery. Lorin L. Dame, 1st Lieut. 15th Battery Mass. Light Artillery. Albert S. Bickmore, Private 44th Mass. Infantry. A. P. Cragin, Private in a Mass. Cavalry regiment. Killed in battle. John Jeffries, Jr., Major 1st Corps Cadets Mass. Volunteer Militia. George Brooks, Private 45th Mass. Volunteers. Died in the service at Newbern, N. C. Robert M. Copeland, 1st Lieut. and Q.M. 2d Mass. Infantry, Major and A.A.G. U.S. Vols. Alfred P. Rockwell, Captain Ist Battery Conn. Light Artillery, Colonel 6th Conn. Infantry, Brevet Brigadier General U.S. Vols. cle M. Weld, Captain 18th Mass. Infantry, Colonel 56th Mass. Infantry, Brevet Brigadier General. E. R. Cogswell, Corporal 44th Mass. Infantry. Jonathan Dorr, Private 44th Mass. Infantry. Nathaniel Willis Bumstead, Captain 45th Mass. Infantry. Carleton A. Shurtleff, Medical Cadet U.S. Army. Joseph T. Rothrock, Private 12th unattached company Mass. Infantry, Captain Pennsylvania Cavalry. Copley Amory, Ist Lieutenant 4th U.S. Cavalry. Rey. George H. Hepworth, Chaplain 47th Mass. Infantry. William Ellery Copeland, Private 44th Mass. Infantry. Lewis W. Tappan, Jr., Captain 45th Mass. Infantry. The writer can scarcely hope, notwithstanding great care taken, that no errors will be found in this roll of honor. He would especially regret the omission of the name of a single member of the Society, who manfully went forward to serve the nation in its hour of peril. Early in the decade now passed was received the bequest of Mr. Jonathan Phillips of $10,000. This was followed by the grant of land from the State on which the Museum was afterwards erected. Then came the first of the series of donations from our great benefactor, Dr. William J. Walker, of his house in Bulfinch Street, followed by the second and third of $20,000 each, and finally by the great bequest from him which established the institution on such a firm foundation as to secure its perpetuity so long as wisdom shall prevail in its councils. The Society had also been the recipient during the decade of the bequests before men- tioned, from Paschal P. Pope, $20,000; Miss Sarah P. Pratt, $10,000, with a large collee- tion of shells; Dr. Benjamin D. Ghouna, $9,000, with a large library of valuable books; and Mr. Flere Harris, $5,000. It had likewise received for the establishment of a fund 138 HISTORICAL SKETCH OF THE for the Library, $5,000 in the name of Huntington Frothingham Wolcott, who died in the military service of the country in the war of the rebellion. Of the donations made towards building and other purposes in the early part of the decade, Mr. Nathaniel Thayer contributed $2,500, Mr. Thomas Lee $1,000, Mr. John L, Gardner $1,000, Dr. Benjamin D. Greene $1,000, Mr. Henry B. Rogers $1,000, and an anonymous friend $1,000. A considerable amount of the money subscribed towards the building and working funds was from donors of sums varying from $500 to $100 and less. Besides money, the Society received during the decade the magnificent donation of the Lafresnaye collection of birds from Dr. Henry Bryant. There was a very valuable donation made to the Society by Mr. James M. Barnard in 1864, notice of which has not been given. This consisted of a large collection of fossil echinoderms made by Dr. A. Krantz of Bonn, and was second in the country only to that in the Museum of Comparative Zoilogy in Cambridge, presenting as it did good types of nearly every group of the class. Mr. H. F. Wolcott mentioned above was a young member of the Society whose great interest in it led to the endowment after his death of the fund referred to in his name by his father, Mr. J. Huntington Wolcott, as a memento of that interest, and as a recognition of what would have been pleasing to him if living. The fund is known as the Huntington Frothingham Wolcott Fund, and now amounts to over $6,000, the interest at first having been allowed to accumulate and having been added to the capital. It is held is trust, the income alone being available for the purchase of books for the Library. The service of this fund to the Society has been very great, as without it, there would not have been means to supply works actually indispensable for the use of the members. Mr. Wolcott was born in Boston, February 4th, 1846, and died June 9th, 1865. In mentioning the bequests of Mr. Jonathan Phillips made during the decade, no such notice was given of this benefactor of the Society as seems fitting should appear concern- ing him. A few brief remarks are therefore added here. Hon. Jonathan Phillips was born in Boston, April 24th, 1778. He was the son of Lieutenant Governor William Phillips and was educated for mercantile life, but never engaged in much active business. Upon the death of his father in 1827 he became the possessor of a very large fortune, and the remainder of his life was mostly passed in liter- ary culture, travel, and in taking an active share in many of the benevolent and educa- tional movements of his day, all of which he generously aided. He was at one period a member of the Senate of Massachusetts, but his tastes and inclinations were such as to lead him to shrink from public life. For a number of years he held the office of President of the Massachusetts Bank. He was an associate with Dr. William Ellery Channing, Rey. George Ripley, Dr. Charles Follen and many other prominent men, in the well-known Progress Club, and was a very intimate friend of Dr. Channing. Among many other bequests and donations he contributed $50,000 in aid of the Boston Public Library, first making a donation of $10,000 and afterwards bequeathing by will $20,000, the interest of which sums alone is available for use. He bequeathed likewise the sum of $20,000 to the City im trust, the income of which is to be expended in adorning and embellishing the streets and public places. To this last-mentioned bequest, the City owes the statue of BOSTON SOCIETY OF NATURAL HISTORY. 139 Josiah Quincy in front of City Hall, that of John Winthrop in Scollay Square, and that of Samuel Adams on Washington Street. Mr. Phillips died in Boston on the 29th of July, 1860, at the age of eighty-two years. Of the publications during the ten years, the seventh volume of the Journal and the last of the series, was completed in 1863. The Memoirs in quarto form which succeeded the Journal had been delivered to members in parts from 1865; the whole of the first volume being completed in 1869. Of the Proceedings the twelfth volume and part of the thirteenth had been issued. The members of the several standing committees of the Council during the decade were as follows : On Publication. Drs. Jeffries Wyman, Augustus A. Gould, 8. L. Abbot, Samuel Knee- land, Charles Pickering; and Messrs. 8. H. Scudder, William T. Brigham and Charles J. Sprague. On the Library. Messrs. Charles K. Dillaway, Charles J. Sprague, S. H. Scudder, Hor- ace Mann, J. Elliot Cabot; and Drs. John Bacon and A. 8. Packard, Jr. On Finance. Messrs. Thomas T. Bouvé, James M. Barnard, Edward Pickering and Amos Binney. The average attendance at the general meetings during the ten years was as follows: For the year 1860-61 37 For the year 1865-66 34 ge « 1861-62 37 ce “1866-67 39 “ 1862-63 33 @ “ 1867-68 40 ub “ 1863-64 44 cc “ 1868-69 33 Se “ 1864-65 33 & “ = 1869-70 32 The average attendance at the meetings of the Section of Microscopy after its for- mation was for the months December 1864 to May 1865, 9; for the year 1865-66, 9; 1866-67, 12; 1867-68, 12; 1868-69, 8; 1869-70, 9. The average attendance at the meetings of the Section of Entomology after its forma- tion was for the months November 1866 to May 1, 1867, 12; for the year 1867-68, 9; 1868-69, 12; 1869-70, 10. The members who took the most active part in the proceedings of the Society during the first five years of the decade were Drs. Jeffries Wyman, C. T. Jackson, B. Joy Jeffries, James C. White, Charles Pickering, Augustus A. Gould, Henry Bryant, Burt G. Wilder, C. F. Winslow, William Stimpson and Thomas M. Brewer ; Profs. Louis Agassiz, William B. Rogers and H. J. Clarke; Messrs. 8. H. Scudder, F. W. Putnam, Alexander Agassiz, A. E. Verrill, Horace Mann, C. J. Sprague, Charles Stodder and Thomas T. Bouvé. Those who were most active during the last five years were Drs. J effries Wyman, C. T. Jackson, B. Joy Jeffries, James C. White, Charles Pickering, Hermann A. Hagen, J. B.S. Jackson, Thomas M. Brewer; Messrs. 8. H. Scudder, Charles Stodder, William T. Brigham, R. C. Greenleaf, N. S. Shaler, Horace Mann, B. P. Mann, F. G. Sanborn, E. Bicknell, C. 8. Minot and Thomas T. Bouvé. Walker Prizes. In accordance with the provisions in an agreement made with Dr. William J. Walker by which the Walker Prize Fund was established, offers were made for the best and second best. memoirs presented on subjects proposed by a Committee of the Council, as follows: Subject for 1865: “ Adduce and discuss the evidence of the coéxistence of man and extinct animals, with the view of determining the limits of his antiquity.” 140 HISTORICAL SKETCH OF THE Subject for 1866: “The fertilization of plants by the agency of insects, in HeLa: both to cases where this agency is absolutely necessary, and where it is only accessory.” No essays having been presented, or none deemed by the Council worthy of a prize, the same subjects were proposed again for the years 1867 and 1868, but still without bringing forth any response from writers. Other subjects were therefore proposed for the two sub- sequent years, Viz: For 1869: “ On the etna of arctic and alpine plants in Northern America, with an enumeration of species.” For 1870: “The reproduction and migration of Trichina spiralis.” As with the case of previous subjects, neither of these last elicited any response, or any of sufficient merit in the estimation of the Council to call for an award. It will be seen later that those proposed for the immediately succeeding years were more successful in calling forth essays upon them. The property of the Society at the end of this decade, besides the building, and the col- lections and library which were of inestimable value, consisted of investments belonging to the various funds amounting in the aggregate to $186,898.20; this included, however, several bequests left under restr ictions, a part of the income of which must be expended only for special purposes, and can never be available for general uses or expenses. The library at this time had nearly doubled in size during the ten years, and consisted of 9396 volumes, and 2677 pamphlets, as before stated. But if the members had cause to rejoice at the material prosperity of the institution, they too had often cause to lament the loss of faithful workers for its interests, many of whom had been companions in their labors. Among those taken by death during the ten years were Dr. B. D. Greene, Dr. Geo. Hayward, Mr. Francis Alger and Dr. Augustus A. Gould, all original members of the Society; Dr. Wm. J. Walker, its great benefactor; Dr. Henry Bryant, Mr. Octavius Pickering, Mr. Thomas Bulfinch, Mr. Horace Mann, Mr. Huntington Frothingham Wolcott, Mr. Carleton Atwood Shurtleff and Capt. Joseph P. Couthouy. DecapE V. May, 1870— May, 1880. 1870. The fifth decade commences with the office of President vacant, by the resignation of Dr. Jeffries Wyman ; with Mr. Alpheus Hyatt, Custodian; Rev. Joshua A. Swan, Recording Secretary and Librarian; Dr. Samuel L. Abbot, Corresponding Secre- tary ; Mr. Edward Pickering, Treasurer; Mr. F. G. Sanborn, Assistant in the Museum ; Miss Lillias Blaikie, Assistant in the Library, and Mr. George Coles, Janitor. It will be recollected that at the annual meeting the Committees for the several depart- ments of Comparative Anatomy, Mammals and Microscopy were not elected. At the first meeting succeeding, the following persons were chosen to these respectively : Mammals. J. A. Allen, Thomas Waterman, Jr., M.D., J. B. 8. Jackson, M.D. Comparative Anatomy. Thomas Dwight, M.D., Jeffries Wyman, M.D., J. C. White, M.D. Microscopy. Edwin Bicknell, R. C. Greenleaf, B. Joy Jeffries, M.D. The following changes were made in the members of the Committees as elected at the annual meeting: J. A. Allen was transferred from the Committee on Ornithology to that BOSTON SOCIETY OF NATURAL HISTORY. 141 of Fishes and Reptiles, taking N. E. Atwood’s place on the latter; and J. Elliot Cabot was chosen one of the Committee on Ornithology. It was decided to change the Janitor’s room from the north-west corner of the base- ment to the south-west corner, at an expense of $1500, it having been found that from lack of sunshine in the apartments, the health of members of his family had been seriously impaired. Under the new condition of affairs inaugurated by the election of Mr. Hyatt as Cus- todian, certain changes were desirable in the Regulations and By-Laws. The Librarian, besides such duties as defined hitherto, was given the sole direction of the Janitor so far as related to work expected of him in the delivery of publications, care of office, lecture room, &c. He was also to have sole charge of the assistants in the Library. _The office hours were fixed at from 9 A. M., until the closmg of the Library in the afternocn, ex- cept an intermission not exceeding two hours at noon. A vacation of two months was allowed him during the year. The Custodian, in addition to duties defined in By-laws, was to have the immediate charge of the Museum, and the sole direction of the assistants employed there. Also the sole direction of the Janitor, excepting in such duties as are mentioned in the authority given the Librarian over him. He was empowered to decide in all cases relative to the arrangement, care or use of the collections not otherwise specially provided for, and his decision was to be binding, unless overruled by the Council. When any department suf- fered by neglect or other cause, he was authorized to take charge of it and report to the Council. He was required to prepare a report as early as possible on the state of the Mu- seum, and a plan for the definite arrangement of the collection, so as to best illustrate what the Society had in view by the formation of its Museum. He was required to give twenty- four hours each week at least, of undivided attention to the Museum; six hours each for four days, or eight hours each for three days. A vacation of two months was granted him. The Assistant in the Museum was authorized to act for the Custodian in his absence. OFFICE tH] mz AT BOTANY. MUSEUM OF THE BOSTON SOCIETY OF NATURAL HISTORY. es BOSTON SOCIETY OF NATURAL HISTORY. 145 In October of this year, a large fin-back whale was exhibited in one of the docks of the harbor, exciting much interest in the community, and attracting a large con- course of visitors. The matter was brought before the Council by a motion being made that Dr. Thos. Dwight, Jr. and the Custodian be a committee to procure if possible the skeleton of this huge animal for the Museum. At the next meeting Dr. Dwight reported that the carcass had been presented to the Society by Mr. Harvey T. Litchfield, had been accepted by the committee, and had been towed to and stranded upon Spectacle Island. Upon the suggestion of Dr. Dwight, three hundred dollars were voted to cover expenses of transportation, cleaning, and delivering the skeleton at the Museum. This fine specimen now adorns the main hall of the Museum, being suspended from the roof of the buildmg. Dr. Dwight gave a large part of a year of scientific labor in the preparation and final arrangement of the skeleton in the position it now occupies, and to him the Society is mainly indebted for such an important acquisition to its collection. The skeleton is undoubtedly the finest in the country, and its perfection is largely due to his personal care and watchfulness over the carcass until all the bones were safely removed. The lack of means at this time necessary to accomplish all the objects the Society had in view for the instruction of the public in science, weighed upon the niinds of the active members, as indeed it has ever since. They were, therefore, much gratified to learn from the President that he had had an interview with Mr. John Amory Lowell, the Trustee of the Lowell Institute, who had kindly expressed a willingness to provide for several courses of lectures from the Lowell fund, to be given in our building under the auspices of the Society ; the lectures to be selected by the Council, and the subjects to be such as per- tained to natural history. In accordance with this favorable provision for continued instruction by lectures, seven courses were given during the season of 1870-71. The first six lectures were by the Rev. J. L. Russell, on Cryptogamic Botany, the second course of two lectures by Prof. J. 8. Newberry, on the Cafions of the Colorado and Ancient Civilization of America, the third course of six lectures by Dr. Thos. Dwight, Jr., on the Comparative Anat- omy of the Mammalia, the fourth course of four lectures by Dr. P. P. Carpenter, on a General Sketch of Mollusca, the fifth course of two lectures was by the Rev. R. C. Waterston, on some of the remarkable natural features of California; the sixth course of twelve lectures by Prof. W. H. Niles on the Principles of Geology, and the seventh course of six lectures by the Rev. E. C. Bolles, on the Revelations of the Microscope. These lectures were generally attended by large numbers and were of a very interesting and instructive character. In December, 1870, Miss Blaikie, whose services as assistant in the Library had been very valuable, and whose presence had always diffused cheerfulness, resigned on account of her approaching marriage. The thanks of the Council were presented to her for the very efficient manner in which she had discharged the duties of her office. 1871. By vote of the Council in January of this year, as one of the precautions against fire; smoking in every part of the building was prohibited. On Feb. 7th, Mr. John Cum- mings presented to the Society five hundred dollars to be applied for educational lectures to teachers during the next winter, that of 1871-72. Mr. John Cummings, the President, Mr. Bouvé, the Custodian, Mr. Hyatt, and Mr. Wm. H. Niles, were appointed a Committee to employ the gift in accordance with the wishes of the donor. This was the first open 146 HISTORICAL SKETCH OF THE manifestation made by Mr. Cummings of his intention to afford an opportunity to the teachers of Boston to become acquainted with natural history. His mind had for some time dwelt upon a plan by which the public might possess a better scientific culture than hitherto, and thus share in its refining influences. The general lectures delivered each winter, though undoubtedly of great service to many, seemed to him to accomplish but inadequately the object he had in view. He finally came to the conclusion that by inter- esting the teachers in the several branches of science, and by affording them an oppor- tunity of receiving practical instruction, better and more lasting results might follow than from any other course. Possessing themselves a knowledge of botany, of mineralogy, or of any other branch, they could not fail to exert a great influence upon the many thous- and minds that came under their instruction, in favor of its study, and thus another gen- eration be led to show greater interest in pursuits of an elevating tendency. The mem- bers of the committee other than Mr. Cummings himself, feeling a great interest in the proposed plan, early issued a circular to the teachers, calling attention to the generous proposal made by him, and invited their co-operation. A committee on the part of the masters of the Grammar Schools was appointed to learn the feelings of the teachers gen- erally on the matter, and to report results. The circular referred to, after mentioning the proposal of the donor, stated that teachers of every grade were invited; that the lectures would be given on Wednesday or Saturday afternoons, as the teachers might decide, com- mencing in October and continuing through the winter at the Museum of Natural History; that the earlier courses would be on Physical Geography, Botany and Geol- ogy, and that they would be given by Professors familiar with the object method of teach- ing and skillful in the use of chalk; that it was designed that the lectures should be practical and familiar, questions and answers to be allowed, and the whole subject slowly developed; that the Professors were anxious to know how large classes they could rely upon before leaving the Museum for summer work, and therefore asked all teachers who desired to avail themselves of the offer to sign the circular. It was gratifying to find that the movement excited great interest on the part of those to whom it was addressed, manifested by the prompt signing of the circular by upwards of seven hundred teachers. The great success which followed this preliminary action will be given in the account of proceedings hereafter. In March of this year, a bequest of one thousand dollars was received from the late Mr. Sidney Homer for the general purposes of the Society. The Council subsequently voted to appropriate the amount for New England mammals. The assistant in the Museum, Mr. Sanborn, was authorized to devote two mornings each week to giving instruction at the Bussey School of Agriculture, upon his consenting to have his salary reduced, and Mr. P. S. Sprague was employed to work in the collection of Insects. At the annual meeting in May, the Custodian read his report for the year. Much of it was devoted to general considerations concerning the objects of the policy of the Society which, having been referred to earlier, will not be dwelt upon here. Of the meetings, it was stated that there had been eighteen of the Society, with an average attendance of forty- one persons, eight of the section of Microscopy with an average attendance of eleven, and BOSTON SOCIETY OF NATURAL HISTORY. 147 seven of the section of Entomology with an average of ten. Thirty-seven written com- munications had been made by thirty-six persons. Of these, thirteen were presented in the section of Entomology and thirteen in the section of Microscopy. Of the publications, eleven signatures of the Proceedings, completing the thirteenth vol- ume, had been issued, and of the Memoirs, one paper, Historical Notes on the Earth- quakes of New England, by William T. Brigham, had appeared. The Library had received during the year by gift, purchase or exchange, 215 volumes, 765 parts of volumes, 183 pamphlets and 22 maps and charts. The use of the Library had been extended to members of the Institute of Technology and to others pursuing some branch of natural science, who made application. Of the departments of the Museum, the Custodian reported as follows : That of Mineralogy had received a large accession by the purchase of a fine series of specimens, and by the presentation of several, and the reception of others by exchange. The whole collection was in perfect order, and every specimen labelled. The Geological collection was in good order, and fully arranged and labelled. There had been no important additions. The Palaeontological collection had had much work done upon it in identifying and labelling the specimens. The condition of the Botanical collection was stated to be good, being entirely free from insects. It contained about 25,000 specimens labelled and glued to papers, and many hundred duplicates for exchange. A considerable nnmber of plants from various expe- ditions yet required much study and work for their identification and arrangement. The department of Comparative Anatomy had been enriched by the important addition made to it of the skeleton of the whale before mentioned, of the reception and mounting of which the particulars have been given. The corals and the sponges of the Radiata had been rearranged by Mr. Sanborn, and placed on black tablets. The labelling was reported, however, as incorrect in many cases, and it was recommended that measures should be taken to secure the services of Prof. A. KE. Verrill for the naming of the species. Much work had been done on the Insects by Mr. P. 8. Sprague, and it was stated that the cases recently procured would obviate all danger of future damage from moths and Anthreni. Valuable additions to the collection had been made by Messrs. Sanborn, Swan, Trouvelot, Sprague, Dickenson, Minot, and Scudder. The department of the Mollusca required much attention from able conchologists. The services of Dr. P. P. Carpenter were obtained for a short period on the general collection, and Mr. L. Lincoln Thaxter continued work on the New England collection. The collection of Fishes was in good order and Mr. Putnam had been engaged in label- ling the specimens, which work was reported as nearly completed. The Reptiles were stated to be in the same condition as the previous year. The col- lection was reported as small, and needing many additions. The department of Ornithology had received many valuable additions of fresh eggs of Arctic birds from the Smithsonian Institution, and some rare specimens of birds from Mr. Thure Kumlein. The Custodian had adopted many expedients to stop the ravages of the Anthreni, but 148 HISTORICAL SKETCH OF THE with only partial success. Constant work alone, he said was the most effectual. Every bird had been soaked in benzine or naptha. The great want was such cases as are the best adapted to keep out the pests that do the injury. Those in use were not fit by their construction to contain specimens liable to attack. The department of the Mammalia was reported as rapidly improving. The New Eng- land collection had received many accessions obtained by expenditure of a portion of the bequest of Mr. Sidney Homer, the Council, as before stated, having appropriated the sum thus received for the purpose of adding to this collection. At the election of officers, Mr. R. C. Greenleaf was chosen Second Vice-President, and Mr. J. A. Allen one of the Committee on birds in place of Mr. J. Elliot Cabot, resigned. Walker Prizes. Ata meeting of the Society in June, the President, Mr. Bouvé, pre- sented the report of the committee on the Walker prizes. To Prof. Albert N. Prentiss of Ithaca, New York, the first prize of one hundred dollars was awarded, and to Mr. Daniel Milliken of Hamilton, Ohio, the second, of fifty dollars, for their competitive essays “On the mode of the Natural Distribution of Plants over the Surface of the Earth.” In October, Mr. F. W. Putnam called the attention of the Society to the great loss the Chicago Academy of Science had suffered in the destruction by fire of their valuable col- lections in the various departments of natural history and of archaeology, and offered a resolution of sympathy on the part of the Boston Society of Natural History, and the offer of such of our publications and duplicate specimens as might be acceptable. This was ably seconded by Professor Agassiz, who mentioned that the Museum of Comparative Zoélogy had suffered greatly by the fire, as all of Count Pourtalés’ collections on the Deep Sea dredging expedition were deposited there. The resolve was unanimously passed. At a meeting of the Council it was voted that Miss Lucinda Foster be employed to suc- ceed Miss Blaikie as assistant in the Library. The death of the Reverend Joshua Augustus Swan, the Recording Secretary and Libra- rian of the Society, occurred on the 31st of October. At the meeting on November Ist, the President, Mr. Bouvé, paid the following tribute to his memory: “1 know not how to utter the deep grief I feel and which I know is shared by you all in the death of our dear companion, Mr. Swan, the Secretary of the Society. No one, I am sure, who has had the pleasure of personal intercourse with him, but will feel that he has lost a near and dear friend. To me his presence even has always seemed a benedic- tion. Ido not think I ever was so much impressed by the personal character of any man with whom I have come in contact as with that of Mr. Swan. He seemed always over- flowing with love for, and a desire to aid, all about him. What might excite in other men feelings of bitterness or anger, moved him only to sorrow, and no one was more char- itable in his judgments of the acts of others. Truly we have lost from our circle a man devoid of guile, upright in conduct, lovable beyond expression, pure in heart and faithful in every duty. God grant that his family, so dear to him, may have strength to bear the loss that falls so much more heavily upon them than upon all others.” The following resolution, with others offered by Prof. J. D. Runkle, was then unani- mously passed : BOSTON SOCIETY OF NATURAL HISTORY. 149 “ Resolved, That in the death of Mr. Swan the Society recognizes the loss of not only a highly efficient officer and member, but of an associate greatly respected for his attain- ments as a scholar, admired for his noble qualities as a gentleman, and loved for his many virtues as a man and a Christian.” Before the close of the year it had become so evidently necessary to have cases of better construction for the birds than those in use, and in furtherance of the plan of reorganization adopted, the Council voted that the entire income from the Bulfinch Street fund for one year, be expended in fitting up cases in the upper gallery for that purpose. 1872. In February, Mr. Edward Burgess was elected Recording Secretary and Librarian of the Society in place of Rev. J. A. Swan, deceased. The necessity for the presence of police officers on public exhibition days to preserve order and to see that the specimens of the Society suffered no harm, was now so apparent that at the meeting on March 6th, the President was authorized to petition the City Gov- ernment to appoint such officers. At a meeting of the Section of Entomology, on the 27th of March, the death of an active member of that section, Mr. William Hales Dale, was feelingly referred to, and the following resolution unanimously passed : “ Resolved, That in the death of our late associate, William Hales Dale, we mourn the loss of one whose many graces had endeared him to us, and whose researches in natural science, now abruptly arrested by this inscrutable dispensation, commanded our highest respect.” This gentleman bequeathed to the Section of Entomology his cabinet of insects, and five hundred dollars. The annual meeting of the Society was held on May Ist. From the report of the Treasurer it appeared that the receipts, including donations amounting to $1249.26, and a bequest of $500, exceeded the expenditures $3649.89. The Custodian’s report for the year embraced much matter of importance, but nothing more gratifying that what he expressed relative to the Teachers’ School of Science, by which name he designated the school formed through the liberality of Mr. John Cum- mings. It will be recollected that this gentleman in the early part of the previous year presented to the Society $500 to be applied for educational lectures to teachers, to be given during the succeeding winter. This sum he afterwards increased to cover all’ expenses occurred in carrying out his design, so that instead of $500 he really paid $950 to the Society. The remarks upon the result are here given. “The Teachers’ School of Science was conceived and has been carried into successful operation during the past winter, under the patronage of Mr. John Cummings, a well known member of the Society. Under the direction of the Committee in charge, courses of lessons have been given in Physical Geography, by Prof. W. H. Niles; on Mineralogy, by W. C. Greenough; on Zoology, by the Custodian; and one is now in progress by Dr. W. G. Farlow, of Cambridge, on Botany. “Prof. Niles delivered the first six. He undertook to give the more general features of the earth’s surface, and then to apply these general principles to the explanation of the physical characteristics of Massachusetts. The success of this course may be judged by the average attendance, which was about six hundred teachers of all grades, and by the 150 HISTORICAL SKETCH OF THE fact that the methods of teaching geography in some of our public schools are now under- going a change in favor of the more natural method introduced by him. “The necessity of actually handling and dissecting specimens obliged the Committee, after consultation with the masters of the Public Schools, to confine the issue of tickets to about two for each school. This limited the average attendance at the succeeding lessons, six on mineralogy, eleven on zoology, and ten on botany, to about fifty-five. Specimens were distributed and studied at every lesson, and we know that in many instances the instruction was repeated at the schools. We have without doubt excited an interest in natural history, which must speedily effect a marked improvement in the system of public instruction. “The lectures of the first course by Professor Niles were given in the commodious hall of the Institute of Technology, the others in the lecture room of the Society. The mate- rials for the course of zodlogy were largely furnished by Prof. S. F. Baird, United States Commissioner of Fisheries, and those of the botanical course by Prof. Asa Gray, from the Botanic Garden at Cambridge. “‘The expenses of the Society in connection with these lectures were but trifling, and it received donations incidental to their delivery of considerable value. Among these-were a full suite of the marine animals of Wood’s Holl, a full and complete collection of the fauna of the southern coast of Massachusetts, and also a complete collection of the marine animals of the coast of Maine. These collections were purchased for the Teachers’ School of Science by Mr. Cummings, but as the duplicates were sufficient for the distribution at the schools, a series from all of them was first selected for the Museum to be the property of the Society. Many of the species thus obtained were not before in the cabinet. The visit of the Custodian to Wood’s Holl to procure the specimens required for the school, enabled him fortunately to procure a complete set of the skins of sharks, rays, skates and other large fishes, which were collected by the vessels and the men in the employ of the U. S. Commissioner of Fisheries.” The Custodian, in addition to what has been given above, stated that at his solicitation Mr. Charles J. Sprague had generously given two hundred dollars towards preparing the skins mentioned above for the New England collection. The rearrangement of the Museum in accordance with the plan adopted by the Society, had been commenced by removing the birds to the upper gallery, where suitable cases had been prepared for their reception. As the experience of the Society may be of service to some who read these pages, the statement of the Custodian concerning these cases is given entire. “ Extraordinary precautions were taken to render them absolutely insect tight. The lumber was very carefully selected and kept heated while the work was going on. All joints were tongued, grooved and glued. The tops, bottoms and sides were built into the plastering, the sashes grooved and tongued and locked by wedge-shaped bolts. The latter were arranged so as to draw the sashes up tightly and firmly against the tongues at the top and bottom and completely close the fronts of each case. Morse’s patent brackets were used to suspend the shelving, which hangs upon the wall and has no connection with the fronts. The success of these precautions is shown by the air tight condition of the cases. By suddenly opening or closing a sash, one can readily crush in or burst out the neighboring glass panes. The resistance of the air is so great that it has BOSTON SOCIETY OF NATURAL HISTORY. 151 to be overcome by a steady slow pressure. The plan was similar to one adopted in the Smithsonian Institution and was recommended by Professor Baird.” The Custodian reported that the effort to free the Ornithological collection from the further ravages of Anthreni had been successful. Some of the birds had been so badly affected as to require their being operated upon over twenty-five times before they were entirely freed from the pests. In the Conchological department much work had been done by Dr. P. P. Carpenter, and by exchange with him a valuable collection of British shells had been procured for the Society. In the department of Entomology also much work had been done by Mr. Sprague in completing the general collection of Coleoptera placed in the rail cases of the upper gal- lery. The specimens of Coleoptera were mentioned as numbering about 10,000, and are in the improved boxes adopted by the Council. The Mineralogical department had received by donation from Mr. F. Alger, the large specimens of beryl which have since occupied the window recesses in the hall of entrance to the Museum, exciting the interest of beholders. The Geological department had been enriched by the presentation on the part of the Technological Institute of the magnificent mass of hematite iron ore and jasper which may be seen with the beryls above mentioned in the hall of the Museum. From Mr. L. 8. Burbank a series of specimens had been received illustrative of a paper by him upon the Kozoon canadense, from Dr. $8. Kneeland some lavas, and from Mr. Thomas T. Bouveé a set of polished marbles. The other collections were mentioned as in fair condition. Much work was constantly required upon many of them in consequence of defective cases. Of the publications two quarterly parts of the fourteenth volume of the Proceedings had been issued, and four articles of the Memoirs. The Library had received 424 volumes, 945 parts of volumes, 268 pamphlets and 52 maps and charts. There had been eighteen See meetings with an average attendance of thirty-two per- sons, nine of the section of Microscopy with: an average of ten, and eight of the section of Entomology with an average of eleven. Six Corresponding and thirty-four Resident Mem- bers had been elected. There had been eighty-two communications, of which seventeen were before the Entomological section and twelve before the Microscopical section. Previous to the election of officers, the department of Geology and Minerals was divided, and at the election the following members were chosen on the respective committees: Geology; William H. Niles, William T. Brigham and Thomas TT. Bouvé ;—Minerals ; Thomas T. Bouvé, Charles T. Jackson, M. D., and L. 8. Burbank. The only other change made at the election was in substituting Dr. Samuel Kneeland in place of Mr. J. A. Allen on the Committee for Fishes and Reptiles. Leave of absence was granted in June to the Custodian for one year, his salary to be relinquished until his return to the duties of his office. He wished to visit Europe and make himself acquainted with its museums and men of science. Walker Prizes. In June the Council awarded the first prize of one hundred dollars 52 HISTORICAL SKETCH OF THE to E. D. Cope, and the second of fifty dollars to Benjamin G. Ferris, for their competitive essays on “The Darwinian Question; its bearing on the Development of Animal Life.”’ In August of this year, the Council passed votes implying some action on the part of members not entirely satisfactory, and at the same time defining limits for the future, viz. : All donations shall be submitted to the Committees of departments, before final depo- sition. All work rooms in use by Committees are to be regarded as private and shall not be exposed to intrusion except by members of the Council. In September, Prof. Shaler proposed that notices of each meeting be mailed to mem- bers designating the subjects that would be brought before it, hoping this might lead to better attendance. Before this time simple notice of other meetings had been published in two daily papers. The suggestion of Prof. Shaler was approved and adopted. In October, the Council, in view of the fact that the City Government did not furnish regularly such police officers as were necessary on public days, passed the following vote : “That in consequence of injuries done the Society’s building and collection by visitors, the Museum will be closed to the public after October 19th, until measures can be taken to properly protect the property; and the Secretary is instructed to advertise the same in six daily papers for one week.’ This determined action led to officers being furnished for a while satisfactory to the Society. During the summer of the year, there had been three field excursions of the members of the Entomological section, resulting in their obtaining a large collection of specimens. The places visited were first Mattapan and vicinity, second Peabody, and third, Waltham and Waverly. 1875. The Museum of the Society was closed to the public on the first day of March, because the police officers had ceased to attend. This led to an interview on the part of the President, with the Mayor and Chief of Police, resultmg im a promise on their part that officers should be present on public days. At the annual meeting in May, in the absence of the Custodian abroad, the Secre- tary, Mr. Burgess, presented the yearly Report upon the condition and operations of the Society. From this is given the following abstract. During the year, two Honorary, one Corresponding, and twenty Resident Members had been elected. There had been eighteen general meetings of the Society, six of the section of Ento- mology, and six of the section of Microscopy. The average attendance at the general meetings had been twenty-five, showing perhaps a diminished interest in them. There had been four courses of Lowell Lectures given under the direction of the Society, and a fifth was in progress. The first was upon “The Principles of Zodlogy,” by Prof. Edward $8. Morse, and had an average audience of sixty persons; the second upon “ Min- eralogy,” by Mr. L. 8. Burbank, and had an average audience of forty persons; the third upon “ Evenings with the Microscope,” by the Rev. KE. C. Bolles, and had an average audi- ence of two hundred and fifty, and the fourth on “ Chemical and Physical Geology,” by Prof. T. Sterry Hunt, and had an average attendance of one hundred and fifty. The fifth course by Mr. B. Waterhouse Hawkins, upon “ Comparative Anatomy,” so far as they had progressed, had had an average attendance of fifty. The Teachers’ School of Science was necessarily suspended, much to the regret of a great number who desired to avail themselves of its privileges. The publications had BOSTON SOCIETY OF NATURAL HISTORY. 153 been satisfactory. Two numbers of the Memoirs and two parts of the Proceedings had been issued. The additions to the Library during the year had been 277 volumes, 852 parts of vol- umes, 189 pamphlets and 20 maps and charts. In the Museum the necessary alterations in the cases had progressed as fast as regard to financial considerations warranted. New and admirable ones for the reception of the valu- able Herbarium presented by John Amory Lowell, Esq., had been made and were in use. The change in the location of the collections of the various departments so as to bring them in the designed relation to each other had proceeded steadily, and at this time the work was so far accomplished as to enable visitors to the galleries, by entering the first and passing round to the right, to study the zodlogical collection in order, beginning with the sponges and passing to the higher groups. A beginning had been made on a comprehensive system of labelling, a great step towards publishing a visitors’ catalogue, so important as a means of instruction. Much work had been done on the collections during the year by Messrs. Emerton and Sprague, the former having labelled over 2,000 bottles of Crustacea and many of New England worms and radiates, and the latter being engaged nearly all the year on insects. Dr. Carpenter had likewise done much in studying our Mollusca and in labelling them. They were sent to him at Montreal for identification. Valuable donations had been received from many parties, among them birds from the Smithsonian Institution, insects from Mr. Sanborn and Mr. Ernest Papendiek, a fine fossil tree from the Joggins Mine, Nova Scotia, presented by the Institute of Technology and a beautiful Japanese crystal globe by Mr. Thomas Gaffield. The collection of Minerals had been much enriched by a large and valuable addition made to it by purchase from Dr. Beadle of Philadelphia. The expense was but trifling to the Society, as two members paid a large sum towards the purchase, and considerable money was received from the sale of duplicates. The number of visitors to the Museum seemed steadily to increase, schools often coming with their teachers. It was open to the public daily during the Peace Jubilee, so called, when the City provided special police for its protection. The Treasurer’s account for the year exhibited an excess of receipts over expenditures of $1,342.98. The Society suffered a loss of $6,280 from the great fire of November, 1872, it having held stocks in insurance companies that became worthless. It was obliged to pay also assessments to the amount of $2,346, levied by the companies. The changes made in the officers at the election were as follows: John Cummings was chosen on the Committee of the department of Geology, from which William T. Brigham and Thomas T. Bouvé resigned. J. Henry Blake was chosen on the Committee of Mol- lusks in place of John Cummings, transferred to Committee on Geology. Richard Bliss, Jr., was chosen on the Committee for Fishes and Reptiles in place of Dr. D. Humphreys Storer resigned. J. H. Emerton was chosen on the Committee for Mammals in place of Thomas Waterman, Jr., M. D., resigned. Samuel H. Scudder was chosen on the Committee for Insects in place of F. G. Sanborn. In June of this year the gallery was added, with the cases, to the rear library apartment. The want of more room for books had been long felt but was now indispensable. A case was also built for the reception of the moose which had been procured for the Society. 154 HISTORICAL SKETCH OF THE At a meeting of the Council it was voted to present the specimens belonging to the Society which were formerly in the Ethnological department to the Peabody Museum. Walker Prizes. The first prize of sixty dollars was awarded in June to Dr. A. S. Pack- ard, Jr., for an essay by him on the subject proposed for this year ‘“ On the development and transformations of the common house-fly.” The Grand Honorary Prize was awarded this year by the Council to Alexander Agassiz for his investigations in the Embryology, Geographical Distribution, and Natural History of the Echinoderms, and the sum of one thousand dollars, the highest amount the Council was authorized to grant, appropriated for the purpose. In November, Mr. William 'T. Brigham offered to present to the Society the casts of the busts of several naturalists, if it would pay the cost of transportation from Europe. The offer was accepted with thanks; these busts, being those of Cuvier, A. L. de Jussieu, Adrian de Jussieu, Buffon, Linnzeus, and Charles Girard, were subsequently received and now adorn the main hall of the Museum. A meeting of the Council was called by the President on December 15th. Upon assem- bling, he addressed the members, stating that in view of the great calamity that had befal- len the community and particularly upon all interested in scientific culture and progress, by the death of our distinguished member Louis Agassiz, he had thougnt it well that they should come together and take such immediate action in relation thereto, as might seem fitting upon the occasion. He then recommended as a manifestation of respect to the memory of our honored associate, that the usual second monthly meeting be omitted on the next Wednesday evening and that we communicate to the family of Professor Agassiz our wish to be present at his obsequies if this should be agreeable to them. The pro- posed action was taken. Louis AGASSIZ. 874. The meeting of the Society on January 7th partook largely of a memorial char- acter, the proceedings generally relating to the death of our distinguished member, Prof. Louis Agassiz. After calling the members to order, President Bouvé addressed them as follows : Since we last met an event has occurred that has brought deep sorrow to our hearts, and indeed moved with grief those of the whole community; for whilst in the death of the great naturalist we have lost a distinguished Honorary Member, a pioneer in the paths we love to tread, one whose name deservedly ranks high among the most illustrious of those who have explored the world of matter and of life, the great body of the commun- ity has lost one whom it has long and justly regarded as pre-eminently the great teacher in science, the man of all men, who inspired the love of knowledge, and who was never weary in his efforts to impart the best he knew to every seeking soul. Truly all alike, learned or unlearned, high in attainments and position, or only humble seekers of truth, may well weep the loss of him, whose presence alone was to everybody an inspiration. To those of us who have been in any degree sharers in his labors, or companions in lit- erary or scientific circles, his loss is irreparable. BOSTON SOCIETY OF NATURAL HISTORY. 155 The fine physical form, the countenance ever beaming with feeling and intelligence, the expressive utterances, and above all, that subtle influence which came from the whole being of the man, alas! that these are now only matters of memory. But it is not for me to dwell upon the event I have alluded to. For a fit expression of the loss sustained by the Society, we have the privilege of looking to one whose valuable services to it in its earlier days we have not forgotten, and who was one of the first among scientific men to welcome to our shores and our companionship the great naturalist. I need not say I refer to our former President, Mr. George B. Emerson, whom I now have the pleasure to introduce to you. Upon the close of the President’s remarks, Mr. George B. Emerson gave an interesting address, a large part of which is here presented. I thank you, Mr. President, for the great honor you do me by inviting me to say some- thing before, and in behalf of, your Society, in commemoration of the most distinguished naturalist that has appeared among us. You know how reluctantly I consented to speak, and I feel how madequately I shall be able to represent the Society. Yet I cannot but admit that there is some apparent propriety in your request. I was one of those who formed this Society. All the others who first met, except one, are gone; Dr. B. D. Greene, Dr. J. Ware, F. C. Gray and the rest. My old friend, Dr. Walter Channing, alone, in whose office most of the first meetings were held, is still living. Moreover, while I was in the seat you now occupy, it was agreed by my associates that it was very proper and desirable that a survey of the State, botanical and zoélogical, should be made, to complete that begun by Prof. Hitchcock in Geology. At their request I presented to Gov. Everett a memorial suggesting this. Our suggestion was graciously received. Gov. Everett brought the subject before the Legislature, in which some friends of natural history in the House of Representatives had already been acting toward the same end ; an appropriation was made, and he was author- ized to appoint a commission for that purpose. On that commission four members of this Society were placed; the reports of three of whom, Dr. Harris, Dr. Gould and Dr. Storer, have been, and still continue to be, considered of signal and permanent value, and Mr. Agassiz himself regarded them as among the best reports ever made. It has given and still gives me the greatest satisfaction to know that the Society has been continually going forward, and that it is now more prosperous than ever. A little more than twenty-seven years ago, as I was sitting in my study, a message came to me that two gentleman desired to see me. They were immediately admitted, and Dr. Gould introduced me to Louis Agassiz. His noble presence, the genial expression of his face, his beaming eye and earnest, natural voice, at once gained me, and I responded cordially to his introduction. He said, ‘“‘I have come to see you, because Dr. Gould tells me that you know the trees of Massachusetts; I wish to be made acquainted with the Carya. I have found the leaves and fruit of several species in the Jura Mountains, where they were deposited when those mountains were formed; but, since that time, none have been found living in Europe. I want to know them as they are now growing.” I told him that I knew all the species found in New England, and should be glad to show them to him. “But I have,” I said, “presently to begin my morning’s work. If you will let me call on you immediately after dinner, I shall be glad to take you to them.” 156 HISTORICAL SKETCH OF THE At the time fixed, I called on him at his lodgings and took him, in my chaise, first to Parker’s Hill, where one species of hickory grew, then through Brookline, Brighton and Cambridge, where two others were found, and to Chelsea, where a fourth, and one that might be a variety, were growing. I pointed out the characteristics of each species in growth, branching, bark, fruit and leaves, and especially in the buds. He listened with the most captivating attention, and expressed surprise at my dwelling upon the peculiari- ties of the buds. “I have never known the buds to be spoken of as characteristic,” said he; “that is new to me.” We drove on to Chelsea Beach, which stretches off several miles, — apparently without end, — and, as the tide was very low, was then at least a quarter of a mile wide. He was charmed with everything, expressing his pleasure with all the earnestness of a happy child, hardly able to restrain himself in his admiration and delight. He told me that he had never before been on a sea-beach, but that he was familiar with the undulations and wave marks on the old beaches laid open in the Jura Mountains. ; I need not say what a pleasant drive this was. I had long felt great interest in various departments of Natural History, but had been so fully occupied with my own duties, as a teacher, that I had been able to indulge myself fully, and that for a small part of the year, in one only. Here was a companion who was intimately acquainted with all, and with the most distinguished men who had been advancing them, and who was ready and happy to communicate wealth of information upon every point I could ask about. The news of the death of Agassiz caused a throb of anguish in millions of hearts. Such a death is a loss to mankind. What death among kings or princes in the Old World, or among the aspirants for power, or the possessors of wealth, in the New, could produce such deep-felt regret? He is gone. We shall see his benignant face and hear his winning voice no more ; but we have before us his example and his works. Let us dwell, for a few moments, on some features in his life and character, as an inspiration and a guide, especially to those who mean to devote their leisure, or their life, to natural history, or to the great work of teaching! What a change has taken place, in the whole civilized world, and especially in this country, in men’s estimation of the value and interest of these pursuits, since he began his studies. To whom is that change more due than to Agassiz? He was endowed by nature with extraordinary gifts. His fascinating eye, his genial smile, his kindliness and ready sympathy, his generous earnestness, his simplicity and ab- sence of pretension, his transparent sincerity ;—these account for his natural eloquence and persuasiveness of speech, his influence as a man, and his attraction and power as a teacher. For the development and perfecting of many of his highest and most estimable qualities of mind and character, Mr. Agassiz was doubtless indebted to his noble mother, who, judging from every thing we can learn, was a very rare and remarkable woman. To the quiet, homely, household duties, for which the Swiss women are distinguished, she added unconsciously, very uncommon mental endowments, which she wisely cultivated by extensive reading of the best authors, and by conversation with the most intelligent per- sons. Trained by such a mother, Agassiz grew up in the belief of a Creator, an infinite and all-wise Intelligence, Author and Governor of all things. He was sincerely and humbly BOSTON SOCIETY OF NATURAL HISTORY. 157 religious. During his whole life, while exploring every secret of animal structure, he saw such wonderful consistency in every part, that he never for a moment doubted that all were parts of one vast plan, the work of one infinite, all-comprehending Thinker. He saw no place for accident, none for blind, unthinking, brute or vegetable selection. Though he was a man of the rarest intellect, he was never ashamed to look upwards and recognize an infinitely higher and more comprehensive Intellect above him. Agassiz’s mother-tongue was French, but both this and German were in common use in the Pays de Vaud. He lived, for years afterwards, in several parts of Germany, and thus attained, without special study, the rich language which we Americans have to give so much time to acquire; and he lived, long, a studious and laborious life in Paris, where he became intimately acquainted with Cuvier and other distinguished naturalists, and per- fectly familiar with the French language in its best form. More than once, when he was putting his note-book into his pocket, he told me he knew not whether he had made his notes in German or in French. Agassiz’s universality of study and thought suggest a precious lesson. It is never safe to give one’s self entirely to one study or to one course of thought. The full powers of the mind cannot so be developed. Nature is infinite; and a small part of one kingdom cannot be understood, however carefully studied, without some knowledge of the rest. Agassiz took a large, comprehensive view of the whole field of natural history ; his thorough education and intimate acquaintance with the works of the highest men in sey- eral walks, Von Martius, Cuvier, Humboldt, and others, made it possible for him to do it, and he then fixed on certain departments, and, for the time, he gave himself entirely to one. Whenever Mr. Agassiz undertook a special work, he prepared himself for it by a care- ful study of whatever had been done in that particular line by all others. He had seen, everywhere, indications of the action of ice. He determined to investigate. He began by reading all he could find upon the subject, and then set himself to observe, patiently and carefully, what was taking place in the glaciers themselves. He gave the leisure of several years to this examination, and then felt himself ready to observe the effects of similar action in former ages and distant regions. The opinions of such an observer, after such a preparation, cannot be without authority and value; and it is not surprising that he should not himself have been willing to yield them to those of others who had never given the same study to the subject. His example as a teacher has been of inestimable value, as showing the importance of the best and largest possible preparation, teaching by things really existing and not by books, opening the eye to the richness and beauty of nature, showing that there is no spot, from the barren sea-beach to the top of the mountain, which does not present objects attractive to the youngest beginner, and worthy of, and rewarding, the careful considera- tion of the highest intellect. In 1855, with the aid of Mrs. Agassiz, who, from the beginning, did a great deal of the work, Mr. Agassiz opened a school for young ladies. For this he was, in all respects, admirably well qualified. The charm of his manner, his perfect simplicity, smcerity and warm-heartedness, attracted every pupil, and won her respect, love and admiration. He knew, almost instinctively, what we teachers have to learn by degrees, that we cannot 158 HISTORICAL SKETCH OF THE really attract, control and lead a child, and help to form his habits and character, without first loving him; that nothing in the world is so powerful as real disinterested affection. He gave, himself, by lectures most carefully prepared, an hour’s instruction, real instruc- tion, every day. All his pupils retain their respect and love for him, and some keep the notes they made of his talks, and read them with delight. The school was continued for seven years, with great success, attracting pupils from distant parts of the country. One of the secrets of his success as a teacher was, that he brought in nature to teach for him. The young ladies of a large school were amused at his simplicity in putting a grass- hopper into the hand of each, as he came into the hall; but they were filled with surprise and delight, as he explained the structure of the insect before them, and a sigh of disap- pointment escaped from most of them when the lesson, of more than an hour, closed. He had opened their eyes to see the beauty of the wonderful make of one of the least of God’s creatures. What a lesson was this to young women preparing to be teachers in the public schools of our Commonwealth, showing that in every field might be found objects to excite, and, well explained, to answer the questions, what? and how? and why? which children will always be asking. He had all the elements necessary to an eloquent teacher: voice, look and manner, that instantly attracted attention ; an inexhaustible flow of language, always expressive of rich thoughts, strong common sense, a thorough knowledge of all the subjects on which he desired to speak, a sympathy with others so strong that it became magnetic, and a feeling of the value of what he had to say, which became and created enthusiasm. He thus held the attention of his audience, not only instructing and persuading them, but converting them into interested and admiring fellow students. The advent of Agassiz is to be considered a most important event in the Natural His- tory of the country. The example of his character, his disinterestedness, his consecration to science, his readiness to oblige even the humblest and most modest, his superiority to self-interest, his sincerity and absence of all pretension, his enthusiasm in all that is noble —all these recommended not only him, but the science he professed. Never was a life more richly filled with study, work, thought; and all was consecrated, not to the benefit of himself, but to the promotion of science for the good of his fellow creatures. For many years Mr. Agassiz has seemed to live only for the advancement of natural history, by the building up of his Museum, for which he had collected material, of the greatest possible diversity, which would, properly cared for and arranged, form a Museum superior in numbers and variety to any similar collection in the world. Shall this great work be allowed to fail ? Let every person who honors the name of Agassiz, say No! Let every one who regrets that the great main support of the noble structure is taken away, resolve that it shall not fail, but that, so far as depends on him and what he can do, it shall go on and be built and filled, and stand firm, a glorious temple of science forever. At the conclusion of Mr. Emerson’s address Rev. Dr. R. C. Waterston in response to an invitation from the chair, spoke as follows of Prof. Agassiz’s connection with the Cen- tennial Anniversary of the birth of Humboldt : At a meeting of the Boston Society of Natural History, June, 1869, it was moved and voted that a celebration of the Centennial Anniversary of the birth of Alexander von BOSTON SOCIETY OF NATURAL HISTORY. 159 Humboldt, by this Society, was highly desirable. It was also suggested that Professor Agas- siz be invited to deliver an address upon the occasion. The invitation was extended to Professor Agassiz and accepted. Various circumstances connected with that memorable occasion, at a time like the present, come to the mind with peculiar power. In Professor Agassiz’s public address, his introductory remarks were, ‘I am invited to an unwonted task. Thus far I have appeared before the public only as a teacher of nat- ural history. To-day, for the first time in my life, I leave a field in which I am at home, to take upon myself the duties of a biographer.” Thus this Society had the privilege of inviting Professor Agassiz to a duty (most nobly fulfilled), which without this invitation in all probability he would never have entered upon. That being as he himself expressed it, the first time im his life he had undertaken such a task; it was also, as we now know, destined to be the last. This event which, on every account, had great interest, for these reasons possesses a solemn and sacred import. That anniversary we would keep in grateful remembrance, forming as it does, in connec- tion with many reminiscences, an added and, may we not say, an indissoluble tie between us and him. At the time when the invitation was extended to Prof. Agassiz, he was overwhelmed with work; while by previous labor, both body and mind had already been overtaxed. Under such circumstances, it would have appeared next to impossible for him to comply with the request of the Society, yet so desirous was he to meet their wishes that he under- took the task. On the 3d of July Prof. Agassiz wrote as follows :— “For weeks past I have mtended every day to write to you, but the fact is that just now I have scarcely time to breathe, and with the sincere desire of accepting the invita- tion tendered to me through you, I have been trying to free myself in some degree of the tasks before me. It is not so easy to do this as it seems. “However, I write now to say that I will do my best so far as it depends upon me, to make the Anniversary of Humboldt worthy of his memory, and serviceable to science in the country. The task will be a difficult, and in some respects a painful, one to me, none the less because of my personal relations with him. But I will do my best, and I beg you to believe that the confidence placed in me by those who wish to make this occasion a marked day, has gratified and touched me deeply. “| wish you would express this sentiment in my behalf, and add that my great cause of hesitation has been the fear that I might not satisfy the expectations of those who have thus honored me. Believe me, “ Kver truly yours, “‘ Louis AGASSIZ.” In a note dated July 21st, he says, “I have been completely prostrated this week.” Yet notwithstanding this exhaustion (doubtless far beyond what was imagined by his most intimate friends, and, added to this, serious illness among the members of his own family, his son leaving for Europe, on account of his health, the very day upon which the address was delivered), Professor Agassiz most conscientiously devoted himself through the 160 HISTORICAL SKETCH OF THE sultriness of an intensely hot mid-summer, to the work of preparation. Few are prob- ably aware what a mind like his would, under such circumstances, consider requisite. Nothing was to be taken for granted; not even the memory of former investigations would be accepted without passing through the process of examination. Every step was to be measured, with critical exactness, through the long progress of Humboldt’s scientific career. Is there not exemplified in this fact, one of the marked characteristics of Prof. Agas- siz’s mind? Absolute thoroughness; sifting every question and principle down to its first elements; tracing every thought, from its earliest germ through each successive develop- ment, until the final result is reached. In order to secure freedom from all interruption during these researches, he asked for a room at the City Library, which was readily granted. Here he could gather about him papers and books, which during his absence would remain undisturbed. Mr. Winsor, the efficient and obliging Superintendent, tells me that for more than a month Prof. Agassiz passed at least three or four days of each week, from nine o’clock in the morning until generally three o’clock in the afternoon, and that during this time he called for more than two hundred volumes in different languages, always desirmg to read each work as it orig- inally came from the mind of the author. Thus every work which Alexander von Hum- boldt ever wrote passed under careful review; not only every volume, but every pam- phlet, with the exception of one, which could not be found in this country. On the 4th of September he wrote me, “| have only yesterday finished gathermg my materials, and have not yet begun pre- paring my address.” He adds — “ My friends will never know what anxieties I have to go through on this occasion.” Six days after this I received the following :— “ Nahant, Sept. 10th, 1869. “My Dear Sir: “TJ have succeeded this evening in bringing to a close my draft of an address; not exactly as I would like to deliver it, but such as I may be compelled to read should the occurrences of the day unfit me for an extemporized discourse, which I believe might be more effective.” It would thus appear that even after the address was written, he hoped to give, not what he had embodied in manuscript, but the result of which that would be the basis, in the form of an extemporized discourse, for which, as all know from his constant habit of speaking without notes, he possessed the very highest qualifications. However, to meet every contingency, he adds :— ‘As I go to-morrow to Cambridge, I will try to have my illegible manuscript set in type, that I may myself be able to read it. At the same time I shall see how my dia- grams are progressing, and if satisfactory, forward them at once to the Music Hall. “ Very truly yours, “TL, AGASSIZ.” BOSTON SOCIETY OF NATURAL HISTORY. 161 On the 15th of September he wrote :— “ DEAR Sir :— “T hope I may have a proof of my address for your reporters by the time I reach Bos- ton to-morrow, which I shall hand to you. My diagrams went to the Music Hall Saturday afternoon, with the palm-branch worn on Humboldt’s funeral. “The pen taken from his desk the day he died, and sent to me, I shall bring myself, fearing it might be lost if left with bulkier objects. Very truly yours, “LL. AGASssiz.”’ Such were some of the preparatory labors connected with the address which was to be heard on that Centennial Anniversary by literary and scientific men from every part of the country. Seldom has there been an occasion in the history of New England, which has brought together so brilliant an assemblage of able scholars and prominent men in every department of thought. At the evening reception, Mr. Ralph Waldo Emerson, in speaking of what he termed the “delightful address in praise of Humboldt,” concentrated his estimate in this charac- teristic declaration, “our eminent professor never delivered a discourse more wise, more happy, or of more varied power.” These words expressed the universal feeling. And the address, so cordially welcomed by those who heard it, was received when published with equal favor on both sides of the Atlantic. This very day, I was reading a letter by Sir John Herschel expressing his commen- dation; and in the Life of Alexander von Humbolt, edited by Professor Karl Bruhns, director of the observatory at Leipzig, the address by Agassiz is referred to, both in the preface, and in the body of the book. In the latter, a lengthy extract is introduced. [See Vol. H, pp. 179, 180 and 181.] There were several occasions upon which Alexander von Humboldt extended such attention and kindness to Agassiz, at a time when encouragement was most needed, that it seems but an act of justice and gratitude to recall them here. The first was related by Agassiz some fifteen years ago, at a meeting of the American Academy of Arts and Sciences, soon after Humboldt’s death. “May I be permitted,” he said, “to tell a circumstance personal tome? I was only twenty-four years of age when in Paris, whither I had gone with means given me by a friend, but I was at last about to resign my studies from want of ability to meet my expenses. Professor Mitscherlich was then on a visit in Paris, and I had seen him in the morning, when he had asked me what was the cause of my depressed feelings, and I told him I had to go, for I had nothing left. The next morning as I was seated at breakfast, in front of the yard of the Hotel, where I lived, I saw the servant of Humboldt approach. He handed me a note, saying there was no answer and disappeared. I opened the note, and I see it now as distinctly as if I held the paper in my hand. It said: ‘My Frienp :— ‘I hear that you intend leaving Paris in consequence of some embarrassments. This shall not be. I wish you to remain here as long as the object for which you came is not accomplished. I enclose you a check of £50. It is a loan which you may repay when 999 you can. 162 ; HISTORICAL SKETCH OF THE That one act of Humboldt, at the turning point in the life of Agassiz, may have affected the whole course of his active career. If Sir Humphrey Davy could say “ My best dis- covery was Michael Faraday,’—— what shall we say of this discriminating instance of gen- erous encouragement, which perhaps gave to us Agassiz as a man of science. In the address upon Humboldt, Agassiz speaks of his studies at Munich, whose Uni- versity had opened under the most brilliant auspices, and where nearly every professor was prominent in some department of science or literature. “These men,” he says, “were not only our teachers but our friends. We were the companions of their walks and often present at their discussions.” ‘“ My room,” he adds, “‘ was our meeting-place, bed- room, study, museum, library, lecture-room, fencing-room, all in one. Students and pro- fessors used to call it the little Academy.” It was at this time that Humboldt was preparing for his Asiatic journey. Agassiz was anxious to accompany him, and asked that he might join the expedition as an assistant. This was the beginning of his personal acquaintanceship with Humboldt. A graphic picture is presented of the student’s life in Paris, in the days of Louis Phil- ippe, when Cuvier, just the age of Humboldt himself, was active and ardent in research, his salon frequented by statesmen, scholars and artists. Cuvier was then giving a course of lectures, in the College of France, on the History of Science. “Humboldt,” says Agassiz, “attended these lectures regularly; I had fre- quently the pleasure of sitting by his side, and being the recipient of his passing criti- cism.” At this period, Humboldt had his working-room at the Rue de la Harpe. “There,” continues Agassiz, “it was my privilege to visit him frequently. There he gave me leave to come, to talk with him about my work, and consult him in my diffieul- ties.” At this time Agassiz was twenty-four years of age, and Humboldt sixty-two. “JT had recently,’ says Agassiz, “taken my degree as Doctor of Medicine, and was struggling, not only for a scientific position, but for the means of existence also. I have said that he gave me permission to come as often as I pleased to his room, opening to me freely the inestimable advantages which intercourse with such a man gave to a young investigator like myself. But he did far more than this, occupied and surrounded as he was, he sought me out in my lodging.” Here he gives a most interesting account of a visit from Humboldt, at Agassiz’s narrow quarters, in thé Hotel du Jardin des Plantes. After which is an invitation from Humboldt to meet him at the Palais Royal,— where they dine,— “a rare indulgence,” says Agassiz, “for a young man, who could allow himself few luxuries.” “ Here,” he adds, “ for three hours, which passed like a dream, I had him all to myself. How he examined me, and how much I learned in that short time! How to work, what to do, and what to avoid ; how to live, how to distribute my time; what methods of study to pursue; these were the things of which he talked to me, on that delightful evening.” When we reflect upon the extended reputation acquired by Agassiz before he left Europe; of that visit to this country which led him gladly to adopt it as his home, and of the untiring zeal with which he devoted to it the best years of his life; shall we not hold in grateful remembrance the man who gave to him, at the most critical moment, the cor- dial hand of friendship, and who by his cheering words, inspired fresh ardor, and a hope which no after trial could extinguish ? BOSTON SOCIETY OF NATURAL HISTORY. 163 It is more than a pleasant picture, it is a lesson for all time, and should awaken, through generations, the desire generously to encourage and wisely to aid. It was in this spirit that a “ Humboldt Scholarship” became associated with the Hum- boldt Anniversary. Through personal solicitation on the part of the committee the sum of seven thousand dollars was subscribed to form a permanent fund, the income of which, under the direction of the Faculty, was to be solely applied to the aid of young and needy students, while pursuing their preparatory studies at the Museum vf Comparative Zodlogy, in Cambridge. The founding of this scholarship was the voluntary proposition of this So- ciety as a token of sympathy and hearty good-will. The gratification of Professor Agassiz was at once expressed. In a note written July 3d, he says: “ Your proposition to connect a scholarship with the Museum of Comparative Zodlogy, in commemoration of this occasion, has had great weight with me. I believe that such an arrangement will not only be an ever-returning memento of the solemnities of this 14th of September, but, if properly conducted, will contribute to the real advancement of Natural History among us.” The origin of this scholarship was by some misapprehended. It was supposed to have been suggested, directly or indirectly, by Professor Agassiz. This is an entire mistake. No one could feel more sensitive than he himself did upon this subject. His feelings are frankly expressed in a note which I received from him, after he had read a paragraph in the daily papers, referring this movement to him. “My Dear Sir: — ; “Tn a paper to-day, giving an account of the proposed celebration, ‘a plan’ is alluded to ‘of Mr. Agassiz for founding a Humboldt Scholarship in the institution of which he is the head.’ “This is no doubt a simple error of the press, but I should be very sorry to have it stand. It would have been very ungracious in me, and would have shown, to say the least, a great want of delicacy, had I suggested an endowment for the Museum in which I am personally interested. It was, as you know, a proposition made spontaneously, without any reference to me. And though I rejoice in it and feel doubly unwilling, on account of this offer, to shrink from the responsibility connected with the invitation of your com- mittee, yet the suggestion coming from me, under the circumstances, instead of being appropriate, would be wholly unbecoming. You will excuse me for troubling you about this, but I am sure you will see that it places me in an awkward position.” If in any mind there should exist even the shadow of a misapprehension upon this sub- ject, these words will serve to explain fully both the feelings of Prof. Agassiz and the exact facts of the case. At the close of his public address of the 14th of September, he says: “] have appeared before you as the representative of the Boston Natural History So- ciety. It was their proposition to celebrate this memorable anniversary. I feel grateful for their invitation, for the honor they have done me. I feel still more grateful for the generous impulse which has prompted them to connect a Humboldt Scholarship, as a me- morial of this occasion, with the Museum of Comparative Zodlogy at Cambridge.” 164 HISTORICAL SKETCH OF THE Thus, Mr. President and gentlemen, while we cannot but deeply mourn the vast loss which this community and the whole country has sustained by this bereavement, we rejoice in that friendly relationship which so long existed between us, and are thankful that one of the last great public utterances of his life was given under the auspices of this Society. And now that his life, so beneficently crowded with activity and usefulness, has closed to us in this sphere of being, we are grateful that our mutual efforts established what will not only be a perpetual bond of union between this Society and the institution of which he was the honored head, but which, we trust, through successive years, may prove a source of practical help and encouragement to numberless students, who, by their future efforts, may extend the boundaries of knowledge, thus aiding in the work of human progress, while they carry forward to yet further completion, those investigations and discoveries which, in our own day, have given immortality to the names of Humboldt and of Agassiz. There was much feeling manifested at this time concerning the safety of the Museum and collections, now of inestimable value. At a meeting of the Council, the Custodian brought up the question of prohibiting the use of workrooms after dark. This led to the appointment of a committee to take the whole subject of securing the building and con- tents against fire. At a subsequent meeting, the President, in behalf of this committee of which he was chairman, reported, recommending several changes in regard to unsafe gas fixtures, and the erection of stand pipes for water. By vote, the committee was authorized to do all they deemed wise and necessary in the matter. In January, the President, Mr. Bouvé, again brought before the Council the necessity of continued action in order to place the collections of the Museum in proper sequence, in accordance with the plan of arrangement which had been adopted. He thought that extensive changes were desirable at once. These would involve the fitting up of two gal- leries in the side rooms of the main hall for the reception of the Botanical collection, as well as the fitting up of the north rooms on the first floor for the Mineralogical and Geo- logical collections. To carry out these changes would require an expenditure of about five thousand dollars. After discussion, a committee was appointed, consisting of Messrs. Bouvé, Hyatt, Brigham, Cummings and Scudder, to consider the matter and report at the next meeting to be held a week later. When the Council again met, the President in behalf of the committee, presented plans and estimates relative to the proposed alterations. He stated, however, that the majority of the committee recommended that the Botanical collections be placed in the gallery on the north side of the main hall, rather than on the south side. To this, Mr. Brigham, in behalf of a minority of the committee, strongly remonstrated. A prolonged discussion followed. The Council, after mature deliberation, finally voted, with but one dissenting voice, to make the alterations as proposed by the majority of the committee, and full authority was given the President, Custodian and Treasurer to carry them out. The Council also voted that the southeast room in the base- ment be fitted up as a work room under the direction of the same parties. As indicative of thought given by members of the Society to matters affecting the pub- lic interest not pertaining especially to its work, it may be stated that in February of this year, the Council passed a vote for presentation to the city authorities remonstrating BOSTON SOCIETY OF NATURAL HISTORY. 165 against licensing “ Jourdain’s Museum of Anatomy” so called, on the ground of its ten- dency to offend decency and public morality, whilst subserving no good purpose. It being understood that persons were in the habit of entering the building during the evening hours for other purposes than that of working upon the collections, the Coun- cil voted in March: That after the closing of the building, no person shall be allowed to pass into it, except through the apartments of the Janitor. Some alterations were proposed and adopted in the Constitution and By-laws at this time, the most important of which was the addition to the latter of a section, providing that whenever any existing or anticipated vacancy in the list of officers was to be filled by election, anominating committee should be appointed by the Society at a stated meeting to bring in at a subsequent meeting one or more nominations of persons to fill such vacancy. And providing also that no person should be elected to any office until his nomination had been under consideration by the Society at least two weeks. In April of this year, Mr. 8. H. Scudder spoke of the great importance of a re-survey of the State of Massachusetts, topographical, geological and biological. It was the first in the Union to provide for a survey, but while almost all the principal States had now finished or begun a second one, no steps had been taken by Massachusetts in this direc- tion. The original survey was wonderfully well done, yet incomplete, and the advance of scientific knowledge since rendered a re-survey very desirable. The American Academy of Arts and Sciences had taken the matter into consideration and had appointed a committee to memorialize the Legislature on the subject. Prof. Niles, Mr. John Cummings and the President all addressed the meeting in favor of the project, and finally it was voted on motion of Mr. Putnam: That the President ap- point a committee including himself to petition the Legislature for a re-survey of the State. Messrs. Niles, Cummings, Putnam, Jeffries, Hyatt, and Morse with the President, were accordingly made this committee. In the following May Mr. 8. H. Scudder reported that the subject of a re-survey of the State had duly come before the Legislature and had been referred to the Committee on Education with every prospect of a favorable report. He also referred to the question of a public park now agitated, thinking that the idea of the establishment of a zodlogical garden should be considered by the Society in connection with it. The annual meeting was held on May 6th, Vice-President R. C. Greenleaf in the Chair. The report of the Treasurer showed that the expenditures of the Society had exceeded its receipts $1874.12. Among the former, however, was included the sum of $1754.22 paid for surance of property for five years. The alterations and improvements in the building indispensable for the safety of the collections, and to bring them into proper rela- tion to each other, had cost $3423.81. The report of the Custodian, Mr. Hyatt, who had returned home and resumed the duties of his office, after appropriately referring to the decease of Prof. Agassiz, gives a summary of the work of the year, from which the following is presented. Mr. Hyatt’s visit to Europe afforded an opportunity to fill out the Palaeontological col- lection. A fair collection of species from Western Europe was needed in order that we should be able to compare them in a general way with their synchronous representatives in North America. To meet this want Mr. John Cummings generously furnished the 166 HISTORICAL SKETCH OF THE necessary means for their purchase. By good fortune Mr. Hyatt was able to buy the very valuable collection of Oberfinanzrath Eser of Stuttgart. This was very rich in the fossils of the Tertiary, Secondary and Triassic periods, and also contained a fair representation of the Carboniferous, and some of the Devonian and Silurian types. All these had been selected with great care, and Herr Eser had expended the leisure hours of nearly forty years in accumulating them. Speaking of this collection, the Custodian remarked that the “ unique specimens which it contains are both remarkable and numerous. Many of these were found during the building of the extensive fortifications at Ulm, and were selections from all the fossils obtained, which were sent by the chief architect to Herr Eser. The most valuable single series consists of the two head pieces and detached bones of Belodon Campbelli, the only remains of this remarkable animal ever found. There are specimens of tertiary plants, which are of such delicacy that they are mounted like botanical specimens on paper.” Besides the collection mentioned, Mr. Hyatt purchased also while abroad, through the generosity of Mr. Cummings, several large specimens for the Palaeontological department quite essential to it, among the species several Ichthyosauri and Teleosauri, and a magnifi- cent plate of the expanded species of the Pentacrinus Briartius. A splendid collection of Devonian fossils collected near Ithaca, New York, had also been added to the Palaeontological series, partly by donations of Mr. John Cummings and Mr. Thos. T. Bouvé, and partly by purchase. The illness of Mr. Sprague had interrupted work in the Entomological department. It was reported by Mr. Emerton, free from destructive insects. Dr. Carpenter had continued work on the Mollusca. To the Comparative Anatomy department a prepared skeleton of a horse mackerel had been added. Work on the Fishes had been begun by Mr. Putnam, Chairman of the Ichthyological Committee. The Ornithological collection had been frequently inspected through the year. It was reported as free from insects. Considerable work had been done in the Botanical depart- ment by Miss Carter, employed at the expense of Mr. John Cummings, to inspect and arrange the duplicates. During the year five Corresponding and thirty-one Resident Members had been elected. There had been seventeen general meetings of the Society, eight of the section of Ento- mology, and seven of the section of Microscopy. The plan of notifying each member by postal card of the general meetings and of the papers to be read at each, adopted in the autumn, had been attended with great success. The numbers present since Oct. 15th, have averaged sixty-four, whereas the average num- ber the previous year “was but twenty-five. The greatest number of persons present at one meeting was one hundred and twenty-four, the largest Society meeting ever held in this building. Only one course of the Lowell Institute Lectures was given. This was by Dr. Thos. Dwight, Jr., upon living animal tissues. The disastrous effects of the great fire of November, 1872, had prevented the contin- uance of the lectures to teachers, so generously provided for hitherto by Mr. John Cum- mings. BOSTON SOCIETY OF NATURAL HISTORY. 167 Of publications, four articles in the Memoirs had appeared, and four parts of the Pro- ceedings. The library had received during the year three hundred and twenty-three vol- umes, eight hundred and thirty-three parts of volumes, one hundred and twenty-four pamphlets, and forty-nine maps and charts. Respecting the alterations that had been going on, the Custodian remarked that a con- siderable part of the year had been taken up in making them. There would undoubtedly be experienced some difficulty in the arrangement of details in the separate collec- tions but the natural sequence of forms, whether mineralogical, geological, or zoélog- ical would be as fully and better illustrated than it ever has been in any printed work embracing similar grounds, an achievement heretofore considered unattainable in Muse- ums of the size of this. He deprecated having ascribed to himself the whole credit of the extraordinary success thus far obtained, mentioning that the President had urged the adoption of the plan of organization presented in the annual report of 1870-71, and had ever since given it his energetic support. At the election of officers for the year ensuing, Mr. Samuel H. Scudder was chosen First Vice-President, and Mr. John Cummings Second Vice-President of the Society, taking the positions hitherto held by Dr. Chas. T. Jackson, and Mr. Richard C. Greenleaf. T. Sterry Hunt and L. $8. Burbank were chosen upon the Committee on Geology, from which John Cummings resigned; R. H. Richards was chosen upon the Committee on Min- erals, in place of Dr. Charles 'T. Jackson; John Cummings was chosen one of the Com- mittee on Botany in place of William T. Brigham. On motion of Dr. Kneeland the thanks of the Society were unanimously voted to the retiring Vice-President, Mr. Greenleaf, for his valuable services. The following resolu- tion presented by Mr. George Washington Warren was also unanimously passed : “ Resolved, That this Society desires to place upon its records, its high appreciation of the eminent services rendered by Dr. Chas. T. Jackson, one of its Vice-Presidents, and of the high honor conferred upon the Society by his long association with it; and it would respectfully tender to his afflicted family its sincere condolence for the malady which has overtaken him, and has so abruptly terminated, for a season only, it is greatly to be hoped, his scientific researches, which have been of inestimable value to the public.” It was voted that a copy of the resolution be sent to the family of Dr. Jackson. Six years have now passed since the above mentioned action was taken by the Society, and as the hope expressed of the renewal of scientific work on the part of Dr. Jackson, has not been and is not likely to be realized,’ there can be no more fitting occasion to dwell upon his connection with, and his services to the Society. He was not, strictly speak- ing, one of its original members, but he, soon after its foundation, was acting among them, and in 1833 was elected to the office of Curator. To no man was the Society more indebted for constant and active zeal in its welfare than to Dr. Charles T. Jackson during the first forty years of its existence. Others sur- passed him in laborious work on its collections when nearly all done upon them was by voluntary effort; others in exerting greater influence in the community for its advantage ; but none in a constant manifestation of interest in its proceedings as shown by so long and uninterrupted a participation in them, and by the generous donation of a large por- 1 Dr. Jackson died, after a long illness, on the 29th of August, 1880. 168 HISTORICAL SKETCH OF THE tion of his mmeral collection. No man among the members perhaps manifested more genius for scientific work. Had the truly brilliant suggestions of his mind been always followed up by prompt endeavor to obtain practical results, he would have been recog- nized everywhere as a great discoverer and benefactor. This is not the place to discuss questions relative to his instrumentality in the introduction of ether as an anzesthetic agent. Suffice it here to express what is clearly true that the friends who knew him the most intimately and who were his constant companions, ever felt that much more was due to him than the world awarded. Whatever may be said, however, upon mooted points, all who were members of the Society in his days of activity will agree that he served it well and faithfully and that he richly earned its gratitude. Possessed of a good memory, and having a great fund of information upon almost all subjects that came up for discussion at the meetings, Dr. Jackson became much relied upon to take part when there was any lack of speakers, and thus often largely contributed to the interest of proceedings that might otherwise have been dull. Moreover, he frequently read papers of great value which appeared in the publications of the Society. In the Council meeting first held after the annual one of the Society, the usual commit- tees for the year were formed, and a new arrangement was made with the Custodian, by which it was understood that he should give all his time to the Society, excepting such as was required by him for his regular lectures, and be held responsible for the building and all the employees under his charge ; these to be considered his assistants and not those of the other officers or of members of the Council. The Custodian or the Museum assistant to be present during office hours. The Secretary to be present only when necessary, and the second assistant to be a general assistant under his charge. In furtherance of the plan still in progress to arrange the collections in consecutive order, the Council voted, upon representation of Mr. Bouvé in behalf of the committee on alterations, that it was necessary to fit up the gallery on the south side of the building for the reception of Protozoans and Radiates. Walker Prizes. The subject proposed for the Walker annual prize for 1874 was ‘* The comparative structure of the limbs of birds and reptiles.” No essay of sufficient merit for an award was presented. In June of this year, the subject of a Zodlogical Garden came before the Society and the Council. Ata meeting of the former, it was voted, upon motion of Mr. G. Washing- ton Warren, that a committee be appomted by the Chair to urge, in the name of the Society, before the Park Commissioners and the City Council, the importance of providing for the establishment of a Zodlogical Garden and Aquarium in connection with one of the proposed public parks, and that said committee have power to call a special meeting of the Society whenever it may be thought expedient to consider such recommendation as the committee may suggest in relation to the subject. Whether this committee was appointed and if so what they did, is not reported in the records. The matter is quoted as indicating the readiness of the Society to codperate with the City government in any movement that may be made towards the establishment of a Zodlogical Garden. ) 50.00 ‘Smaller sums were contributed by Mrs. Elizabeth C. Agassiz, Mrs. Samuel Hooper, Miss S. Minns, Miss E. Mason, Miss M. C. Jackson, Miss Stone, Miss Abby W. May, Mrs. James Freeman Clarke, Miss Cora H. Clarke, Miss Lucretia Crocker, Mrs. Thomas Mack, Mrs. A. S. Farwell and others. “Many of these ladies were very active in securing the success of the course and the Society thanks them and others ; especially Mrs. E. D. Cheney, Miss J. M. Arms, Miss C. J. BOSTON SOCIETY OF NATURAL HISTORY. 205 Treland and Mrs. Samuel Wells for their personal efforts in behalf of the Teachers’ School of Science. “The teachers themselves, at our solicitation, joined in making up the fund. The contri- butions from this source amounted to $789. “ Notwithstanding this generous assistance, it would hardly have been possible to carry on the several courses without the friendly aid and direct assistance in various ways of the following institutions and persons. “The Institute of Technology, which most generously gave us the use of Huntington Hall, upon the payment of a merely nominal sum for cleaning and heating. “The Museum of Comparative Zodlogy, under the direction of Mr. Alexander Agassiz, which, through Count Pourtalés, Dr. Hermann Hagen, and Mr. E. C. Hamlin, at various times assisted us by donations of specimens from the respective departments superintended by these gentlemen. “Mr. Henshaw, my right hand assistant in all the work of preparation and distribution, whose untirmg energy contributed largely to secure the ‘success of every lesson; Miss Hintz, of the Normal School. who drew with remarkable skill the diagrams used in the Zoblogical course, and enabled the Custodian to illustrate fully all subjects; Mr. Van Vleck for aid in the preparation of models; Mr. L. S. Burbank ; Miss Nunn, Professor of Biology at Wellesley College; Mr. Robert McCarthy, of New York; Captain Horsfall, of Steamer Canopus; Mr. Eugene G. Blackford, of New York; and the proprietors of the Parker House and Young’s Hotel, for donations of specimens and assistance in various ways. “ Mr. E. G. Gardiner, Mr. E. A. W. Hammatt and Mr. G. H. Barton of the Institute of Technology, have also kindly assisted at the lectures in various capacities. To many of my own students, teachers and others I am also indebted for assistance. “Since the lectures were begun in 1871, they have been continued without interruption, except during the winter of 1872-73, under the patronage of Mr. John Cummings; and previous to this winter about 75,000 specimens of minerals, plants, and animals had been studied and distributed to teachers of the public schools. The applications for tickets rose during those years from an average of 55 to 166. “The number of recorded applications for the course now approaching completion is 616, or nearly four times as many as in previous years, and the number of specimens which will have been distributed during this winter alone cannot fall short of 100,000. “ After an introductory lecture in which the Superintendent of the Public Schools, the President of the Society, and the Custodian delivered addresses appropriate to the occa- sion, Professor Goodale completed a course of six lessons on Botany in which he instructed the whole audience of five hundred with apparently as much readiness as if it had been but fifty. Mr. Jackson Dawson, Mr. Watson and’ Mr. Greenleaf were of great assistance to Professor Goodale in the procuring of the vast number of live plants and the great amount of other material required for his lessons. Mr. Charles W. Spurr, 522 Harrison Avenue, Boston, prepared, for the purpose of illustrating the subject of wood sections, 500 packages of excellent specimens of the following woods: tulip-tree or whitewood, rose- wood, ash, oak, pine, mahogany, walnut, butternut, maple, cedar, birch, cherry, elm and holly. Many of these were in duplicate, exhibiting both plain and figured texture. The ~ 206 HISTORICAL SKETCH OF THE specimens, more than ten thousand in all, were gratuitously presented to the class by Mr. Spurr. “The Custodian followed with twelve lessons on Zodlogy, which will be completed on the 10th of this month, and Mr. Burbank is to continue with five on Mineralogy. The average attendance on fair days, so far, has been about five hundred. “The course was supplemented by the publication of a series of small pamphlets, under the general title of Science Guides, which were intended to assist the teachers in the ap- plication of the knowledge imparted by the lectures. These are described in the Report of the Secretary. “ Perhaps the most gratifying and encouraging facts are derived from an examination of the statistics of the past seven years. Thus out of the 616 applicants of this winter, there are 155 who had attended at least, one previous course,’ 119 who had attended two or more previous courses, and 44 who had attended all of the courses. Some of these last, I may add, are masters of public schools.” The Secretary’s report was interesting, as he compared the condition and the work of the departments under his charge during the ten years then closing. As in this volume it will be better to present such comparisons at the close of another year, they are here omitted. Of members, twenty-four Associate, five Corporate, and fourteen Corresponding had been elected. Of the meetings there had been sixteen of the general Society, seven of the section of Botany, and eight of the section of Entomology. The average atten- dance had been twenty-two at the general meetings, eight at the Botanical, and eleven at the Entomological. The meetings of the last had been unusually interesting. The history of the Botanical section begun, as stated by the Secretary, ‘ under hopeful auspices three years ago, is far from satisfactory.” “With so much popular interest in the study of Botany, the result was unexpected, and is to be regretted.” The condition of the Library was stated to be good and its usefulness never to have been so great—1169 books having been taken out by 123 persons. The Society was indebted to the Museo Civico of Genoa for a valuable and complete series of its publications; to Prof. Joachim Barrande of Prague, for a set of his extensive works; and to Prof. J. O. Westwood of Oxford, for a number of his papers. The addi- tions to the Library are as follows: volumes, 252; parts of volumes, 1005; pamphlets, 214; maps and charts, 221; total, 1692. Of Publications, two numbers of the Memoirs, and three quarterly parts of the Pro- ceedings had been issued. A new volume of Occasional Papers, the third, had been put in press, and would soon be printed. Besides these, a series of Guides for Science Teaching had been prepared for use in the courses of lectures to the teachers, three of which had been published and distributed, the cost being defrayed by sales. The three already issued were, About Peb- bles, by Prof. Hyatt ; A few Common Plants, by Dr. Goodale ; and Commercial and other Sponges, by Prof. Hyatt. These were to be followed by other numbers. The Secretary stated the exchange list as numbering 352 Societies or Journals, of which 50 were United States and Canadian. 1Tt must be remembered that the highest number of attendants at lessons reached in previous years was 166. BOSTON SOCIETY OF NATURAL HISTORY. 207 The Treasurer’s account for the year showed that the income applicable for the general purposes of the Society had not come up to the estimate made at its commencement, and that the expenditures had been about three hundred dollars in excess of such income. As, however, insurance on the property had been paid for five years in advance, the spirit of the policy not to expend beyond the income had been adhered to. There had been an excess of all receipts over expenditures of $855.90, all of which and probably more it would be necessary to reserve for prize and other special expenses in accordance with the conditions attached to the use of the Walker Fund. At the election of officers but few changes were made, and these only in the Com- mittees on the departments of the Museum. M. E. Wadsworth was chosen on the Min- eral Committee instead of L. S. Burbank, Rev. G. Frederick Wright on the Geological Committee instead of T. Sterry Hunt, W. F. Whitney, M. D., was added to the Com- mittee on Comparative Anatomy, C. O. Whitman was chosen on the Committee of Mol- lusks, in place of L. Lincoln Thaxter, and E. L. Mark in place of Dr. J. B.S. Jackson, deceased. At the meeting of the Council following the general annual meeting of the Society, the trustees presented their estimate of the probable income of the Society, applicable for general purposes for the ensuing year, as $8538.16. Asa portion of the income for special uses, amounting to several hundred dollars, might be expended for general pur- poses, they recommended that $8800 be appropriated for expenditure, not well perceiving how less could be used without detriment to the interests of the Society. Walker Prizes. 'The subject proposed for this year was “ The structure, history, and development of some cryptogamous plant.” One essay was presented, but it was not deemed worthy of a prize, and no award was therefore made. In October the Woman’s Educational Association having requested the use of the lec- ture room of the Society for botanical lectures on Mondays and Fridays, the Council eranted the request upon the condition that the expense of heating the room, and of the janitor’s services, should be paid by the Association. The Council appointed at this time committees to act upon special matters as follows: On the grand Walker Prize, soon to be awarded, Professor Wm. B. Rogers, Professor Goodale, and Colonel Theodore Lyman ; on tablets to be placed in the entrance hall of the Museum, commemorative of its great benefactors, Rey. Robert C. Waterston, Edward Burgess, and Alpheus Hyatt. The Council also voted that the President appoint a committee to consider and report upon a plan for the reception of the American Association for the Advancement of Science, that body having decided to meet in Boston the coming summer. In November, the Council granted to Mr. L. 8. Burbank permission to use the lecture room of the Society for a course of geological lectures, he payimg only such expenses as might be incurred for janitor’s services, etc. In December, a vote was passed by the Council authorizing the Committee on Publi- cation to attempt the publication of an illustrated quarto volume of the Memoirs as a part of the Society's celebration of the semi-centennial anniversary of its foundation, by soliciting subscriptions for such memoirs at ten dollars per copy. The committee was also authorized to begin to prepare and arrange for the publication when five hundred dollars were subscribed. 208 HISTORICAL SKETCH OF THE In December, a petition to the Society having been presented for the formation of a section of Microscopy, signed by Messrs. 8. P. Sharples, Samuel Wells, R. R. Andrews, Edward Burgess, J. Frank Brown, David Hunt, Jr., Francis A. Osborn, R. C. Greenleaf, A. Hyatt, G. F. Waters, and W. F. Whitney, the consent of the Corporate Members was given at two meetings in accordance with the By-laws, and the section was thus formed. 1880. Walker Grand Honorary Prize. In January, the Committee on the award of the Walker Grand Honorary prize, having unanimously recommended Dr. Joseph Leidy, of Philadelphia, as eminently worthy to receive it, for his prolonged investigations and dis- coveries in Zodlogy and Palaeontology, as presented in publications made by him, it was voted by the Council that the grand prize be given to Dr. Leidy, and that in conse- quence of the extraordinary merit of his work that the sum awarded be one thousand dollars. In January, also, the Custodian reported to the Council that the Committee of the department of Comparative Anatomy objected to his proposed re-arrangement of the col- lection of that department, and asked that the question at issue might be referred to the next meeting for decision. Thus was brought before the Council the very important mat- ter of determining whether the collection of Comparative Anatomy, like the other collec- tions of the Society, should be arranged in subordination to the great plan proposed and adopted at the commencement of the decade for the whole museum, or if the collection of that department should remain an exception, not becoming a part of a series, the full completion of which was essential to illustrate in the best manner the general laws of science. At the next meeting of the Council, which was held January 21, there was a very full attendance, and a warm discussion took place upon the proposed action of the Custodian in which Dr. Dwight, representing the Committee of the department of Comparative Anatomy, — Professors Hyatt and Shaler, Colonel Lyman and Messrs. Allen and Bouvé took part. The great work that had been done by members of the committee upon the collection in past years, demanded that all said by them against a change should be thoughtfully and respectfully considered. There was therefore, no disposition to hasten a decision, and accordingly a vote was passed referring the matter to a committee of three to be appointed by the President. Colonel Theodore Lyman and Messrs. 8. H. Scudder and Sam- uel Wells were named as this committee, and instructed to report at a meeting to be held a week later. Upon the Council again coming together a report was presented by the chairman of the committee favoring the proposed re-arrangement, whereupon Dr. Dwight said he would not further oppose the execution of the plan of the Custodian, though he personally believed the collections would be injured by the change. The Council then passed a vote with but one dissentient voice, approving the proposed action of the Custodian in carrying out the plan of 1870, with regard to the department of Comparative Anatomy. Thus was settled, not without much feeling, but amicably, a question, the decision of which in favor of the proposed change, was regarded by the great majority as most important for the welfare of the Society, whilst a number of members influential through eminent service in its behalf, thought the proposed action uncalled for and detrimental. a BOSTON SOCIETY OF NATURAL HISTORY. 209 It may be conceded that much worthy of consideration was said in support of their views, but it is believed that all students of nature will finally concur in the opinion that the decision made was a wise one. ; Dr. Toomas Mayo Brewer. At the general meeting of the Society on February the fourth, the President, Mr. T. T. Bouvé said : Since we last met, the Society has lost one of its oldest and most valued members, Dr. Thomas M. Brewer. It grieved me as an old personal friend to learn when in a distant state, that the disease, by which as I knew before leaving home he was prostrated, had terminated fatally, and that I should not again receive his pleasant greeting on earth, or even have the sad satis- faction of being present at the funeral services following his departure. The long inter- course between us had always been of the most agreeable character, and I feel that I have reason to mourn that it has so unexpectedly and mournfully terminated. This is not the place, however, for me to indulge in the expression of personal bereavement, but rather to dwell on the great loss the Society and community have met in the death of our beloved associate. Dr. Brewer was born in Boston, Noy. 21st, 1814. He graduated at Harvard College in 1835, and in the Medical School in 1838. He labored in his profession for several years, but his tastes and inclinations were stronger for other pursuits. He was fond of literary labor, and, having strong political tendencies was early led to write for one of the lead- ing Whig papers of the period, the Boston Atlas, and at length to become one of its edi- tors, in which capacity he manifested marked ability both as a writer and close observer. Subsequently he became interested in the firm of Swan and Tileston, a publishing house which was afterwards changed to that of Brewer and Tijeston. He retired from business in 1875 and then visited Europe, where he remained two years. He had become well known by his ornithological labors and received consequently very gratifying attention from many distinguished scientific men whilst abroad. In the cause of popular education he was very zealous, manifesting at all times great interest in the public schools of the city. He was long a member of the Boston School Committee, and served in this capacity with great devotedness. His last election to this office was in 1879, for the term of three years. Dr. Brewer was elected a member of this Society October 7th, 1855, and soon became well known by his valuable contributions, mostly upon his favorite subject of ornithology. It is pleasant to recall the fact that his first communication to the Society was in defence of Nuttall and Audubon, the distinguished naturalists, the latter his warm personal friend, against some unjust attempts in a foreign magazine to detract from their well earned and deserved reputation. Not long after he presented a highly interesting paper upon the Birds of Massachusetts, in which he gave an account of over forty species not embraced in the State report of Dr. Hitchcock upon the Geology and Natural History of the State. From that early period, now nearly half a century since, he never ceased to manifest great interest in the welfare of the Society, by frequent communications and in such other ways as his health would admit. 210 HISTORICAL SKETCH OF THE Apart from what he performed for the Society, he accomplished much for scientific knowledge by contributions to several publications of great value, and by articles which he furnished for some of the popular magazines. As these remarks will be supplemented by particular mention of Dr. Brewer’s scientific writings in a sketch furnished by his friend Mr. J. A. Allen, it will not be necessary for me to make further reference to them, and I need only add that, had he lived free from the business cares that until recently absorbed most of his time, much more might have been looked for from him relative to the habits of birds, particularly of such as find a home permanently or temporarily in New England. We of the Society will greatly miss his efficient labors in striving to complete the collec- tion in the department of New England Ornithology, for the development of which he manifested much and increasing interest. In the death of Dr. Brewer our Society has lost a most valuable member, and the community, a good and wise citizen, one of whom it may be truly said: He was always faithful to the duties of every position in which he was placed, and ever ready to work where he recognized that his labors would promote the public welfare. The following notice of Dr. Brewer’s scientific labors by Mr. J. A. Allen, was also con- tributed. The death of Dr. Brewer removes another of the older American ornithologists, of whom there now remain two only whose period of scientific activity extends back to the time of Audubon and Nuttall. Dr. Brewer’s first formal contribution to ornithology, enti- tled “Some additions to the Catalogue of the Birds of. Massachusetts in Prof. Hitchcock’s Report, etc.,” was published in 1837, in the first volume of the “ Journal” of this Society. These additions numbered forty-five species and increased by one-fourth the list of birds previously known as inhabitants of this State. Previously, however, he had furnished val- uable notes and rare specimens of birds to Audubon, who in his great work on North American birds, makes frequent mention of his indebtedness to “ his young friend, Mr. T. M. Brewer of Boston.” In 1840, he became more generally known as an ornithologist through his edition of Wilson’s “ American Ornithology,” — the only American edition of Wilson’s work, except Ord’s, published prior to 1871. The “ Brewer Edition,” from its comparatively small cost, placed this delightful work within the reach of a wide circle of readers, to whom the more expensive original and Ord editions were inaccessible. It was enriched by the addition to the original text of the synonymy and critical commentary of Jardine’s edition, and by a very useful and carefully digested synopsis of all the birds at that time known as North American. In 1857 was published the first part of his “ North American Odlogy,” which forms part of volume IX of the “Smithsonian Contributions to Knowledge.” The full title of the work — “ North American Odlogy; being an account of the geographical distribution of the birds of North America during the breeding season, with figures and descriptions of their eggs ”’ —indicates very fairly its scope and character, but in addition to the topics thus indicated, the work gives a pretty full exposition of the breeding habits of the spe- cies treated, so far as then known, and also full tables of synonymy. Owing to the great BOSTON SOCIETY OF NATURAL HISTORY. Alla cost of the illustrations, the work was not continued beyond the first part, which treats of the Birds of Prey, the Swifts, Swallows, Goatsuckers and Kingfishers. This work, until within the last year, was the only special treatise extant on the subject to which it relates, and will ever hold the place of a standard work. It is, moreover, a work which brought to its author great credit, and through which he became widely known as an ornithologist of high standing. In 1874 appeared “ A History of North American Birds,” under the joint authorship of 8. F. Baird, T. M. Brewer, and R. Ridgway, in three quarto volumes devoted to the “ Land Birds.” To this work the whole of the biographical part, forming probably two-thirds of the letterpress, was contributed by Dr. Brewer, and throughout evinces his thorough familiarity with the literature of the subject, and shows the hand of the master in all that relates to his special department of a work which marks an era in the history of North American ornithology. Dr. Brewer's minor papers appeared at intervals throughout the long period of forty years, and embrace important contributions to our knowledge of American birds. He has left the manuscript for the completion of his share of the great work on North American birds already mentioned, the final revision of which he had just completed ; also material for the contemplated continuation of his “ North American Odlogy.” His collec- tion of eggs—the accumulation of a long series of years, —is doubtless one of the best private collections extant. . Dr. Brewer having been engaged during the larger part of his life in absorbing profes- sional or commercial pursuits, his contributions to ornithology must have been largely the work of such limited time as could be spared from his business engagements, and only within the last few years was he able to devote himself wholly to his favorite studies. Al though an authority of unsurpassed eminence in his special province, — that of North American Odlogy, — his labors were mainly restricted to this field, taken, however in its broader sense. Removed suddenly, apparently when there were years of activity and lei- sure before him for scientific research, his loss is one not easily replaced, nor its impor- _ tance readily appreciated except by those who knew him intimately and were familiar with his conscientious manner of investigation, his warm sympathy, and the thorough loyalty of his friendship. At a meeting of the Council on the 17th of March, the President called the attention of the members to the fact that the 28th of April would be the semi-centennial anniver- sary of the formation of the Society, suggesting that a public celebration of the event should take place. After discussion it was unanimously voted, that the President should appoint a com- mittee, including himself as chairman, to arrange for a proper celebration, with full pow- ers to take such measures as they judged expedient. The committee as formed consisted of the President, Mr. John Cummings, Mr. 8. H. Seudder, Mr. Charles W. Scudder, and Mr. Edward Burgess. It will be remembered that the Council in December had passed a vote in view of this year being the semi-centennial one of the foundation of the Society, that there should be published an illustrated quarto volume of its memoirs as @ part of the Society’s celebration of the event, if subscriptions could be obtained for copies 212 HISTORICAL SKETCH OF THE that would yield five hundred dollars. As more than the necessary number of names had already been secured, preparation was made for the issue of sucha volume. Subsequently the President was solicited to write for the same volume a sketch of the history of the Society, from its foundation to the close of the fiftieth year of its existence. This, after much hesitation, he consented to do, recognizing the importance of having such a sketch prepared, whilst yet some of the founders of the Society were alive and able to give information concerning their early brother members, and fearing that otherwise it would be left undone. The committee appointed to take measures for the celebration of the semi-centennial anniversary were faithful to their trust, taking active measures to ensure success. It soon became manifest that the occasion was to be one of great interest, all persons addressed being found ready to codperate with the committee in carrying out their plans. Cheer- fully His Excellency Governor Long, His Honor Mayor Prince, President Eliot of Harvard University, Dr. Samuel Eliot, Superintendent of the Public Schools, Mr. Agassiz, Direc- tor of the Museum of Comparative Zodlogy, and the Rey. Robert C. WW Mesa, responded to calls upon them to take part in the proceedings. The committee’s labors were mul- tifarious ; they had printed for use at the meeting and for digeibution’ an introduction to the General Guide to the Museum then in preparation by Prof. Hyatt; they had moved the elephant from his elevated position, and other large animals from their accustomed places, and had erected across the north portion of the main hall a platform to accommodate the speakers and distinguished visitors. This was carpeted and furnished with chairs, the rest of the hall having settees over the floor. At the general meeting of the Society, April 21st, the Nominating Committee having reported a list of officers for election at the annual meeting, to take place on the 5th of May, in which Mr. Bouvé’s name was mentioned for President, he addressed the meeting, referring to his having consented four years previously, at the kind solicitation of mem- bers, to withdraw his resignation then tendered, stating that there were several reasons why he should decline re-election at the present time, and urging that the Society would not ask him to reconsider his determination. Mr. Scudder expressed the hope that the President’s withdrawal was not imperative, and dwelt upon the work done under his administration, which had resulted in the final crystallization of the policy of the Society. Remarks were also made by Mr. Hyatt, Mr. Burgess and Mr. Nathan Appleton, ex- pressive of regret at the contemplated action of the President. He, however, warmly thanking the speakers for their kind expressions, reiterated his resolve to resign. It was therefore voted to recommit the report to the nominating committee for reconsideration. This being done they withdrew, and after consultation re-entered the meeting, and pre- sented an amended report, nominating for President in the place of Mr. Bouvé, Samuel H. Scudder. The report was then fuesisdl At this meeting the models of the sun and the earth were presented to the Society he the Boston Stientine Society. These consist of a gilt ball representing the sun, three inches in diameter, and a white plate on which is a black spot three one-hundredths of an inch in diameter, which symbolizes the earth. These were placed one on the centre of each arch at the side of the stairs in the main hall of entrance to the Museum. They ee Seo “ho ZL2 ; “ a i Me ‘ 1 i 1 ‘ + MY i : 1 _ 2 7 I ie : i i { i ; ; + = : . ' haa : i ‘ + ; a = i % i iv i 1 1 - i : -_ ; i ; ' { os q “4 7 ” : . { i a ; yaa i i xis 7 i = 4 A 2 ‘ i cot 1 : 7 , 14 i ' n Z ; i 7 i ze 3 . i! - 7 ) ‘ ; at ’ s i => a eee | ' . -, y a ' - , i i : H i Me is a 7 an t \ , 1 y y yy ‘ ' a | , i } ‘ y Es i - ae Ny | % BS : = i i 1 L J j \ : 7 : rm f en ; . ; i : - 1 : : s — = ‘ s : : ; i “ ‘ - v : : wh / oe Ad BOSTON SOCIETY OF NATURAL HISTORY. 913 represent approximately the proportionate size of the sun and the earth, and their dis- tance from each other relative to size. The proportionate scale of the models and their distance apart is about a foot to three millions of miles, or about one inch to two hundred and fifty thousand miles. A yote was passed, that the President appoint at leisure a committee of three to con- sider the desirability of abolishing the Committees in the departments, and of devising a different plan for organizing the Council, and to propose the necessary change in the Con- stitution and By-Laws for this purpose. The President subsequently appointed as this committee, 8S. H. Scudder, Dr. B. Joy Jeffries, and Edward Burgess. Tur SEMI-CENTENNIAL CELEBRATION OF THE FOUNDATION OF THE SociETy; Aprit 28. The anniversary day was pleasant and all things conspired to render the occasion inter- esting and joyous. The spacious platform which had been erected across the north portion of the main hall was occupied by the President, the speakers, the officers of the Society and a large number of ladies and gentlemen. Pl. trochiformis. Plate 3, lines e-k, and line J, figs. 1-14. Formation “m,” Cloister Pit. This is like “J,” lithologically, and contains:— Pl. °7"* var. revertens, Pl. oxys- tomus, Pl. supremus var. turrita, Pl. discoideus, Pl. trochiformis. Plate 3, line J, figs. 15-17, and lines m-—p. Formation “n, o,’’ Cloister Pit. This consisted of sand layers with limestone partings like formation m, but contained no fossils. Above this occurred a bed of rubble consisting of disintegrated rock, appar- ently derived from the Cloister-ridge rocks and resembling m character that previously encountered on the north slope of the hill, but containing no fossils. OF PLANORBIS AT STEINHEIM. 97 VI. Lists or Sprecres By ForMATIONS. Lower Prriop, or PERIOD oF Rock Deposits. Weuselhalder Rocks. Pl. solidus. P1. platystomus. Pl. Hilgendorfi. Pl. declivis. Pl. exustus. PI. levis. Pl. Larteti or conulus. Coarse Limestone. ay, czysiomus Pl. oxystomus. SEY, (EMG oxrystomus. Oxystomus Limestone, Brag. Cousions Pl. oxystomus. Pl oe Pl. parvus. Valley Rock. Mele creinncimensia. Pl. discoideus. Cloister-Ridge Rocks. (Lower Tier.) tenuis or i liscoideus Pi. ictiiciaiensta: Jap tenuis. Pl. seeeratie Pl. discoideus. (Upper Tier.) ae oy somes TV rae Pl. tenuis, turreted variety. Pl. discoideus. Pl. tenuis. pals ees Uprer Prriop, or Pertop oF Pit Deposits. Formation a. Pl. Steinheimensis var. I El fs Sehr ibs ee Pi. Mechiformis var. like elegans aequiumbilicatus. Pl. tenuis. Hilg. . Pl. Steinheimensis. Pl. discoideus. Pl. trochiformis. HY Sonu sions Pl. discoideus var. involutus. Pl. denudatus. JE lls pe Merateeaeee Jd a es aes Pi. tenuis, turreted variety. Pl. minutus. Formation d. Pl. discoideus. Pl. minutus. Pl. triquetrus. Pl. trochiformis. Pl. costatus. Pl. oxystomus. 98 HYATT ON THE TERTIARY Pl. discoideus. Pl. trochiformis. Pl. minutus. Pl denudatus minutus. Pi. ant evis. Pil. discoideus. iT latus Tee cnaniee Pl. denudatus. SEY costatus minutus. Pl. Steinheimensis. Pl. discoideus. Pl. trochiformis. Pl. Steinheimensis. Pl. discoideus. Formation e. Pl. denudatus. PI. costatus. Pi. costatus minutus. Pi triquetrus minutus. Formation f. Pl. costatus. Pl. triquetrus. Pl. tenuis. Pl. crescens. Formation g. SPECIES Pl. trochiformis (rotundatus- like young). Pl. triquetrus. Pl. oxystomus. Pl. trochiformis. Pl. Kraussii. Pl. minutus. Pl. oxystomus. Pl. pseudotenuis. Pl. trochiformis (rotundatus- Pl. costatus. like young). Pl. minutus. Formation h. Pl. parvus. Pl. crescens. Pl. trochiformis var. pyrgqu- Pl. oxystomus. liformis. Pl. discoideus (rotundatus- Pl. “pckivennis like young). Pil. discoideus var. elatior. Pl. trochiformis. Pl. Steinheimensis. Pl. discoideus. p) te is Je d. Stevimermensie Pi trochiformis * discoideus. Pl. parvus. Pi. tenuis. Pl. discoideus. Pl. trochiformis. discoideus. Pl. triquetrus. Pl. parvus. Pl. erescens. Formation i. Pl. crescens. Pl. oxystomus. Pl. trochiformis. Pl. Kraussit. Formation k. Pl. oxystomus. Pl. crescens. Pl. costatus var. major. Pl. trochiformis (rotundatus- Pl. oxystomus var. rever- like young.) Pl. Steinheimensis. tens. PT eee heimensis. Pl. minutus. Pl. costatus. Pl. denudatus. Pl. costatus var. distortus. Pl. Kraussii. Pl. minutus. Pi oxystomus levis. Pl. costatus. Pl. tenuis. Pl. minutus. Pl. costatus. Pl. costatus var. distortus. Pl. tenuis. Pl. pseudotenuis. OF PLANORBIS AT STEINHEIM. 99 Formation 1. PA. seeinkeimensis. Pl. minutus. Pl. costatus. Pi. tenuis. JEN deans JAX, ory somue var. revertens. Pl. discoideus. Pl. denudatus. Pl. oxystomus var. turritus. Ls ects Pl. oxystomus. Pl. supremus. Pl. trochiformis. Pl. Kraussii. Pl. pseudotenuis. Pl. trochiformis var. pyrquli- Pl. crescens. Wd ie Rae forms. Pl. parvus. Pl. Steinheimensis. t Us ley cous Formation x. Pl. oxystomus. Pl. discoideus. Pl. trochiformis. Formation m. Pl. Steinheimensis. Pl. trochiformis (votundatus- Pl. costatus. LAI ag like young. ) Pl. costatus var. major. Pl. oxystomus. Pi, orysiomus var. revertens. Pl. supremus. Pl. crescens. Pl. tenuis. Pl. supremus var. turritus. Pl. trochiformis. Pl. minutus. Formation n. Pl. crescens. Pl. trochiformis. Pl. costatus var. major. Pl. oxystomus. PI, ervgoms var. revertens. Formation o. Pl. crescens. Pl. trochiformis. Pl. tens * Var. revertens. Pl. oxystomus. Pl. costatus var. major. Formation x bis. Pl. discoideus. Pl. trochiformis. Pl. oxystomus. Formation p. Pl. oxystomus. Pl. crescens. Pl. trochiformis. 100 HYATT ON THE TERTIARY SPECIES APPENDIX I. On page 27 I have written, that I wondered no authors except Prof. Cope and myself had made the law of acceleration an object of investigation. This statement is not wholly correct, since I find in a work just received, “ Studien itiber die Stammes-geschichte der Ammoniten,” by Leopold Wiirtenberger (Leipzig, Ernest Gunther, 1880, 8vo., pp. 110, with four Stammtafeln), that the author has used this law of heredity, though evidently misunderstanding its fundamental character, as one of the laws of heredity, and explaining it as the result of the action of the law of natural selection. It becomes interesting, also, to observe how closely his statements and facts agree with those previously made in my publications; for example, on page 28, he writes as follows: “ Wenn niimlich eine Veriinderung welche fiir die ganze Gruppe eine wesent- liche Bedeutung erlanet, zum erstenmal auftritt, so ist dieselbe nur auf einem Theil des letzten Umganges angedeutet. Gegen jungere Ablagerungen hin tritt diese Veriinderung immer deutlicher hervor und schreitet dann, dem spiralen Verlaufe der Schale folgend, nach und nach immer weiter gegen das Centrum der Ammonitenscheibe fort; d. h. sie ergreift allmithlich immer mehr auch die inneren Windungen, je héher man die betref- fende Form in jungere Schichten hinauf verfolet.” “When, for instance, a variation which attains a substantial importance for the whole group, makes its appearance for the first time, it is exhibited only upon a part of the last (outer) whorl. This variation comes out ever more distinctly as the strata are younger, and advances, following the spiral trend of the shell, step by step, towards the centre of the spiral: that is to say, they (the characteristics) strike gradually more and more towards the inner whorls, as one follows the forms from the older into the younger (later formed) beds.” This statement is an exact transcript of what I have repeatedly written in various essays upon the Ammonites, and also gives the fundamental facts upon which all my inves- tigations have been based for fourteen years. Compare the above, for example, with the following sentences from p. 203, of my memoir in Vol. Ist of the Memoirs of Bost. Soc. Nat. Hist., read Feb. 21, 1866, and pub- lished in 1867. “The young of higher species are thus constantly accelerating their development, and reducing to a more and more embryonic condition, (or entirely passing over) the stages of growth corresponding to the adult periods of pre-existing or lower species.” “In other words, there is an unceasing concentration of the adult characteristics of lower species in the young (or inner whorls) of higher species, and a consequent displacement of other embryonic features (in these inner whorls), which had themselves, also, previously belonged to the adult periods of still lower forms.” With reference to the characters of the Ammonitoid shells, on p. 94, he says: “ dass die Veriinderungen an den Sculpturen, sowie an den tibrigen Charakteren der Ammoniten- schalen sich zuerst auf dem letzten (iiussern) Umgange derselben bemerklich machen, und dass dann eine solche Veriinderung bei den nachfolgenden Generationen sich nach und nach immer weiter gegen den Anfang des spiralen Gehiiuses fortschiebt, bis sie den gréss- ten Theil der Windungen beherrscht.”’ OF PLANORBIS AT STEINHEIM. 101 “That the variations of the sculpture, as also those of the other characteristics of the shells of Ammonites first make themselves visible upon the last (outer) volution, then such a variation advances in the following generations step by step always nearer to the beginning of the spiral, until it covers the greater part of the (inner) whorls.” The difference between our statements! is that Wiirtenberger speaks of the inner whorls and I use the word “ young” in place of the word “ inner whorls,” because the inner whorls of all shells represent the first formed or younger stages of growth. I also in the first quotation use a phrase “entirely passing over’? which has been included in parentheses because it refers to the skipping of characteristics in development, a phase of the law of quicker inheritance, or acceleration in heredity, which Herr Wiirten- berger also mentions, but which is not included in his first statement. I might also refer if I chose to similar quotations from Prof. EK. D. Cope of Philadelphia, showing that he, simultaneously with me, discovered the same law though giving it a somewhat different application than either Wiirtenberger or myself. Now we have only to understand, that the outer whorls are built during the full grown or adult period, and the inner by the animal during the younger stages, in order to per- ceive that this is a statement that the Ammonites inherited the adult characteristics of their ancestral forms at earlier and earlier periods in successive generations. This is the law of acceleration, and it is specifically given by Herr Wiirtenberger in various places in his book, notably on p. 98, where he attributes the preservation of any characteristic differences which may arise, to natural selection, and says that they may be inherited earlier or later in the life of dividual descendants. Then as the earlier inheritance of these characteristics would be of advantage to the individual in the struggle for existence, Herr Wiirtenberger thinks that successive gener- ations would tend to inherit them at earlier and earlier periods. The objections to this seemingly simple and straightforward explanation are numerous. Animals do not inherit the new characteristics which their parents may have acquired at later periods than those in which they appeared in the parent, but at the same time, or earlier in the immediate descendants, and eventually always earlier in the more remote descendants. I have as yet seen no evidence that the descendants inherit a characteristic at a later period than that at which it first appeared in an adult ancestor. Even if this assumption should be proven it would still remain necessary to establish the nature of the characteristics inherited, whether they really were advantageous or not. Notiing can exceed the confidence with which the strict Darwinist assumes, without any appeal to observation, that all characteristics which are inherited are necessarily advantageous. Exactly the reverse is very often true. The disadvantageous, the advantageous, the parallelisms and the differences, are all subject to the law of acceler- 1JIn order to see how closely we have followed the same path it is also necessary to compare the statements on pages 27 and 28 of this Memoir, and in the following essays: “ De- velopment of the shells of Ammonoids and Nautiloids.” Proc. Bost. Soc. Nat. History, Vol. 14, p. 398. ‘ This is the law of acceleration, or the perpetual reduction of adult characteristics to earlier and earlier periods in the growth of the later existing individuals, until finally many character- istics altogether disappear.” ‘“ Cephalopods of the Mus- eum: Embryology.’”’ Bull. Mus. Comp. Zool., Cambridge, Mass., Vol. 3, No. 5, p. 70-71. ‘¢ Evolution of the Arietidae.” Proc. Bost. Soc. Nat. Hist., Vol. 17, p. 238. ‘ Genetic relations of Stephanoceras,’”? in same, Vol. 18, p. 379, last paragraph, p. 382. 102 HYATT ON THE TERTIARY SPECIES ation described above, whereas the law of natural selection can only act when there is a choice of characteristics, and where those characteristics are differences, variations newly introduced, not yet fixed in the organization, and unquestionably advantageous. Animals or plants must act and react upon each other, and then and not before then, can we have any law like that of natural selection, and it is exceedingly questionable whether natural selection applies at either extreme of life. Man is certainly by his own acts capable of modifying and perhaps controlling the result of the battle of life, and it is very probable that the action and reaction of the first beginnings of life in the past history of the world, was no more than could be accounted for by the known action of physical forces upon the simplest of organisms. Natural selection certainly has nothing to do in the embryo, nor yet in the extreme old age of the individual. If, as I have constantly tried to prove, the individual life is a true exponent of the life of the group to which it belongs, the embryo to the progressive past, the adult to the present, and the old age to the degraded or retrogressive future of an exhausted or diseased type, then it may with approximate certainty be assumed that natural selection acts at neither of the extremes of the variation of a given group, neither upon the phenomena of their first appearance, nor upon those indicating their decline and leading to their disappearance. Natural selection, in fact, is simply one of the transient conditions of the physical sur- roundings, having no value as a cause of origin of characteristics, but simply acting on certain categories of these characteristics, after they have originated, and helping to take them out of the list of transient characteristics and fix them in the organization. Once fixed they are inherited, and, unless as described above, interfered with by a reversal of the ordinary physical conditions, by extreme parasitism, etc., they become a part of the younger stages of growth in accordance with the law of acceleration, and are either finally skipped, crowded out altogether, or become embryonic and part of the type form. Herr Wiirtenberger has, also, observed this peculiarity of the skipping or omission of accelerated characteristics, which originally caused the use of the name acceleration as applicable to these phenomena, and used also in this respect words which are almost iden- tical with those which I have employed in describing the same phenomena in previous essays. “Denn es ist leicht einzusehen, dass die fortgesetzte Wirkung der friihzeitigeren Verer- bung der fortwiihrend im Lebensalter auftretenden Abinderungen dahin fiihren muss, die friiheren Entwickelungsstadien niiher zusammenzudriingen, zu verwischen oder zum Theil ausfallen zu lassen, wenn die der eigentlichen Entwickelung der Organismen nicht tiber alle Massen hinaus verliingert werden soll.” “For it is easy to perceive, that the prolonged working of the earlier transmission * of the changes which are perpetually appearing in older life” must lead the earlier stages of development® to shorten up, to disappear wholly or partly, or else the individual devel- opment of the organism would be prolonged beyond all just measure.” 1JIn successive individuals, forms or species. 8 Of descendant individuals, forms or species. Fy Pp e) 2 Of the more ancient or ancestral individuals or species. OF PLANORBIS AT STEINHEIM. 103 I have endeavored in this memoir to explain these accelerations or skippings from which the theory took its name, on pages 28, 29, 30, and the importance of this law in explaining the partial or total obliteration of type characteristics in the embryos of some parasites, as well as in the ordinary cases which occur in every group of animals. Herr Wiirtenberger deals with the Planulatus, Amaltheus, and Pettos groups, on all of which I have published papers, and since he has quoted Waagen, who cites my work, and since Herr Wiirtenberger also knew of my work on the “ Embryology of the Cephalopods,” * as is shown by his allusion to my name at the foot of page 35, it would be very interesting to know how he escaped noticing that I had discovered and formulated the law which he justly considers an important law of heredity, and to the exposition of which he had devoted his book. In a note to page 35 he gives Branco the credit of having done in 1879 the work which I had done in 1872 in my treatise on the Embryology of the Cephalopods, and casually mentions that I had already done something of the same sort on the Goniatites, a small sub-division of the Cephalopods. Here, unfortunately, he did one of his own countrymen an injustice, since this was one of the parts of my work which was not original, it having been copied almost bodily out of Guido Sandberger’s previous researches. I can, however, congratulate Herr Wiirtenberger upon his recognition by full quotations of that much abused naturalist, Haeckel, who, not- withstanding his great offences against the conservatism of reasoning in science, has given a better analysis than any other living naturalist of the laws governing the relations of animals to their surroundings and to each other. His critics, whose name is legion, do him a monstrous injustice in allowing themselves to dwell wholly upon the errors and the faults they can find, forgetting themselves, and blinding others to the substantial services to science of this justly celebrated naturalist. My own indebtedness to him and to his works is very great, as must be that of all those who strive to get some idea of funda- mental laws. Though differing from him on essential points, still in his Generelle Morphologie der Organismen he has given substantially the same view of the action of heredity in pre- serving the type, and of the relations of growth to heredity and of heredity to the modi- fications produced by the direct action of physical influences, as has been set forth in this memoir. ‘The differences lie principally in the estimate of the importance of the law of natural selection, which he considers as of wider application than I think is at all justified by any proofs which have so far been produced. APPENDIX II. On page 14, in paragraph next to the last, and again on page 31 in the first paragraph, I allude to the general tendency to spiral mode of growth in all shells. I had in this memoir no opportunity to enlarge on this subject, and when the remarks were written had not yet published any observations on this interesting subject. Since then, however, in an evening lecture given before the American Association for the Advance- ment of Science during the meeting of 1880, at Boston, I gave some account of the facts as they stand throughout the Mollusca, and attempted to prove, so far as the absence of experiment would permit, the hypothesis that the spiral forms of all shells, whether Ceph- te 104 HYATT ON THE TERTIARY SPECIES alopods, Gasteropods, or Lamellibranchs, and their peculiar shapes, can be accounted for by the different ways in which the attraction of gravitation would act upon the excreting bor- der of the mantle through the weight of the shell itself, or by the natural growth of this part when freed from the weight of the shell. Thus the oyster, pecten, ete., show during the adult stages distortions and a peculiar horizontal growth which can only be accounted for by the support they receive, either from permanent attachment, or by resting on one valve. ‘ The evidence here seems to show that the shell must grow in the direction resulting from the action of the two forces, the movement and growth of the tissues and the oppos- ing force of gravitation. The extraordinary shapes and combinations of asymmetry and symmetry in different parts of the same animal as exhibited in the mollusca, all seem to be resolved when we can account for the influence of gravitation upon a fixed or moving organism, allowing for the reactions occasioned by growth and heredity. APPENDIX III. The remarks on p. 76, with regard to Pl. pseudotenuis, are misleading. Since this page was printed I have undertaken with the help of two assistants to revise and re-arrange my collection. This has led to the finding of several specimens of Pl. pseudotenuis. ‘These show that PJ. pseudotenuis is a form which is genetically connected with Pl. minutus. It has all the characteristics and peculiar aspect of that species in the young, and is never so stout at any period as P/. Araussii. The latter has a shell which resembles it in color and general aspect but not in its proportions, and is also approximate to P/. pseudotenuis, very closely in some specimens which have a prominent thick carination. These are very closely similar to Pl. pseudotenuis, and I think led Dr. Hilgendorf to trace pseudotenuis into Kraussii instead of into Pl. minutus with which it seems to be connected. There have also been found two specimens of PJ. pseudotenuis with a suleation on the upper side of the whorl, which confirms this conclusion; as any one will see, even from an exam- ination of Hilgendorf’s own figure, that such a suleation would render even the extreme form of Pl. pseudotenuis very similar to Pl. triquetrus, which Hilgendorf himself con- siders a member of the minutus series. Var. Avaussii p. 89, fifth paragraph, is P/. pseu- dotenuis. One specimen of Pl. pseudotenuis has been found in Formation f, New Pit, one in k, /, East Pit, one in w same Pit, and one in /, Old Pit. This revision of the collection has also led to the discovery of several diseased forms of Pl. trochiformis, which are very interesting. They are dwarfed. The spiral is partly unwound and then closed up again in course of growth, but is even then much contracted. In fact a very slight increase in the characteristic tendency of the growth, as shown by our specimen would make a whorl larger, but not very unlike P/. denudatus im general appearance. APPENDIX IV. In revising the collection my assistants have also succeeded in finding in Formation de, referred to on page 49, line 18, as containing only “two broken specimens of P/. oxysto- mus’ and also on p..93, line 22, two well preserved young specimens and one nearly full grown. OF PLANORBIS AT STEINHEIM. APPENDIX V. The Geological Map on p. 33, does not exactly represent the views of the strata given on the subsequent pages, it having been copied from the official geological map of the Steinheim locality, sometime before the text was written. Thus the Cloister-ridge Rocks near Steinheim are represented as the equivalent of the Oxystomus Limestone near Sontheim, whereas they more nearly resemble the Coarse Limestone. The rocks on the west side of the amphitheatre, and the two spots of rock also shaded like the Oxystomus Limestone, and lying the west of these, again, are the Neusel- halder rocks, and not at all like the Oxystomus Limestone, which contains a much younger fauna. CORRECTIONS. Page 9, line 8, read animals for animal. Page 11, line 39, read fig. 4 for fig. 40. Page 12, note, line 2, read var. cochleata for var. rotundatiformis. Page 14, line 30, read line ¢ for line A, omit line /. Page 28, line 28, after ast, insert the words a large part of. Page 30, line 24, after fig. 4, insert pl. 9. Page 30, line 28, read early for easy. Page 32, line 25, read immediate for direct. Page 35, line 2; Pi. 74s in place of Pl. paiva, Page 39, line 6, read wmbilicus for wmbiicus. Page 49, line 22, read trochiformis for Trochiformis. Page 62, line 11, read to for by. Page 63, line 19, read pl. 8 for pi. 4. Page 63, line 22, read pi. 8 line e fig. 2 in place of line e, fig. 2. Page 67, line 21, read Jine c for line e. Page 75, line 22, read Steinheimensis for “levis.” Page 75, line 31, read sub-varieties for “ varieties.” Page 77, line 7, after “Zine o,” insert PZ. 1. Page 78, line 2, after “dine h,” insert except fig. 13. Page 78, line 14, insert Pl. trochiformis as title in centre of page. Page 78, line 36, read pl.2 for “pl. 1.” Page 80, line 33, read traceable for “ tracable.” Page 94, line 24, the PZ. pseudotenuis Hilg. there mentioned is not a true pseudotenuis. 106 HYATT ON THE TERTIARY SPECIES EXPLANATION OF THE PLATES. PLATE I. Magnified 2 diameters. List or Spectres. Pl. Steinheimensis var. aequiumbilicatus, line a 1-4, b 17, ¢ 1, 19, m 1-7. Pl. Steinheimensis line a 5-11, b 2-16, d 5, f 18, h 18, m 8-11, n 1-5. Pl, 7425 Jine a 12-16, m 12-14, Pil. 5 russ", line £ 1-3. Steinheimensis, Pl a lineibi Lc la=—145 dl—4 e016) ni 6513: l. tenuis, line ¢ 2-12, 15-18, d 6-17, e 1-15, k 11, n 7-12, 14-15, o 1-7. Pl. discoideus, line £ 4-17, g 1-14, h 1-12, i 1-12, k 1-5, 12, 1 1-10, 0 8-14, 16 (named specimen ), p1-13. Pil. discoideus var. involutus, line d 18, e 17-19. Pi. *echiformis line k 7, line o 15. aisco PI. tockiformis (var. elegans Hilg.), line k 6. discoideus Pl. trochiformis (= trochif. typus Hilg.), line k 8-10, 1 11-12. RS Cueck List py Lies. Line a, figs. 1-4 Pl. Steinheimensis var. aequiumbilicatus, 5-11 Pl. Steinheimensis, 12-16 Pl. evans Line b, fig, LPL. seit noi, 2-16 Pl. Steinheimensis,' 17 Pl. Steinheimensis var. aequiumbilicatus. Line ¢, fig. 1 Pl. Steinheimensis var. aequiumbilicatus, 2-12 Pl. tenuis, 18-14 Pl. seiiitiensis, 15-18 Pl. tenuis, 19 Pl. Steinheimensis var. aequiumbilicatus. - Line d, figs. 1-4 Pl. sities, 5 Pl. Steinheimensis, 6-17 Pl. tenuis, 18 Pl. discoideus var. involutus. Line e, figs. 1-15 Pl. tenwis, 16 Pl. syiiitiiensis, 17-19 Pl. discoideus var. involutus. nheimensis, Line f, figs. 1-3 Pl. Kia"; 4-17 Pl. discoideus, 18 Pl. Steinheimensis. Line g, figs. 1-14 Pl. discoideus. Line h, figs. 1-12 PZ discoideus, 13 Pl. Steinheimensis. Line i, figs. 1-12 Pl. discoideus. Line k, figs. 1-5 Pl. discoideus, 6 Pl. ychifem’ var. elegans, 7 Pl. *yhierns 8-10 Pl. trochiformis, 11 Pi. tenuis, 12 Pl. discoideus. Line l, figs. 1-10 Pl. discoideus, 11-12 Pl. trochiformis. Line m, figs. 1-7 Pl. Steinheimensis var. aequiwmbilicatus, 8-11 Pl. Steinheimensis, 12-14 Pl, otystomus Line n, figs. 1-5 Pl. Steinheimensis, 6 Pl. srinitinensis, 1-12 Pl. tenis, 13 Pl. sreinhelmensis, 14-15 PI. tenwis. Line 0, figs. 1-7 Pl. tenwis, 8-14 discoideus, 16 Pl. discoideus (named specimen), 15 Pl. “penice Line p, figs. 1-13 Pl. discoideus. Cueck List By SEecrions AND FORMATIONS. Formation a. Stratum a 1, Second Hole, and a, First Hole,? Old Pit, Sections 5, 6. Pl. Steinheimensis var. aequiumbilicatus, line a 1-4, b 17, ¢ 1, 19. Pl. Steinheimensis, line a 5-11, b 2-16, d 5, f 18, h 13. EP crysomuny a A = G> PI. seishetnensis, Line f 1-3. PL. geist nce line. b 1, ¢ 18-14, d 1-4, e 16. Steinheimensis, 1 Figs. 10-12 are very similar to Pl. m. parvus Hilg. * lines k-l,a special suite from the First Hole, Sect. 6 taken * Lines a-k show a mingling of forms from both holes; during my second visit to Steinheim. OF PLANORBIS AT STEINHEIM. 107 Pl. tenuis, line ¢ 2-12, 15-18, d 6-17, e 1-15, k 11, o 8-10. Pl. discoideus, line f 4-17, g 1-14, h 1-12, i 1-12, k 1-5, 12, 1 1-10. Pil. discoideus var. involutus, line d 18, e 17-19. PA. "iritia, Vine k 7. Pi. ‘rpchiformis (var. elegans Hilg.), line k 6. Pi. trochiformis, line k 8-10, 1 1-12. Stratum a2, Second Hole, Old Pit, Section 6. Pi. Steinheimensis var. aequiumbilicatus, line m 1-7. Pl. Steinheimensis, line m 8-11, n 1-5. Pi, gos line m 12-14, Pl. seinitinensis, line n 6, 13. Pl. tenuis, line n 7-12, 14-15, o 1-7. Pl. discoideus, line 0 8-16, p 1-13. Pi. trochiformis line fay 15. discoideus PraArns ie Magnified 2 diameters. List oF SPEcIzs. Pl. Steinheimensis var. aequiumbilicatus, line a 1-2. Pil. Steinheimensis, line a 3-4. Pl. Kraussii, line d 1-17, f 9. PL. suite, Line a 7-8, q 12. Pi. tenwis, line a 5-6, 9-12, e 18-27, f 1-8, 10-12, p 9-18, q 5-11. Pi. discoideus, line a 13, b 1-6, 16, ¢ 1-13, f 13-19, h 1-18, i 1-14, k 1-2, m 3-4, 6-9, n 1-7, q 13-16. Pi. discoideus (var. elatior Sand.), line i 15-17. Pi, tpehcorm’s line m 1-2, 5, q 17-18, r 1-4. Pl. trochiformis, line b 7-10, d 18-19, k 3-11, 1 1-11, n 8-12, 0 15-18, r 5-10, s 1-8. Pi. trochiformis (var. pyrguliformis Sand.), line s 9-12. Pl. discoideus (young with forms similar to rotwndatus Hilg.), line h 19-23. Pl. trochiformis (young of normal varieties identical with rotundatus Hilg.), line o 1-14, p 1-8. Pl. minutus, line e 1-6, 7-8, g 1-2, 4, p 14-20, b 11-15. elena timere 101259016, q) 1. Pl. denudatus, line e 13-14, g 7-8. PA. minutus, line e 6, g 5. Pi. costatus, line e 9, g 3, q 2-4. Pi, mnie Jine e 15-17. Pi. triquetrus, line g 9-23. Cueck List sy Livgs. Line a, figs. 1-2 Pl. Steinheimensis var. aequiumbilicatus, 3-4 Pl. Steinheimensis, 5-6 Pl. tenuis, 6-8 PU. seerintts isis, 9-12 Pl. tenuis, 13 Pl. discoideus. Line b, figs. 1-6 PZ. discoideus, 7-10 Pl. trochiformis, 11-15 Pl. minutus, 16 Pl. discoideus. Line ¢, figs. 1-13 Pl. discoideus. Line d, figs. 1-17 Pl. tenwis var. Kraussti, 18-19 Pl. trochiformis. Line e, figs. 1-5 Pl. minutus, 6 Pl. cites 78 Pl. minutus, 9 Pl. costatus, 10-12 Pl, tenmiates 1314 Pl, denu- datus, 15-17 Pl. ns 18-27 Pl. tenuis. Line f, figs. 1-8 P27. tenwis, 9 Pl. tenuis var. Kraussii, 10-12 Pl. tenuis, 13-19 Pl. discoideus. 108 HYATT ON THE .TERTIARY SPECIES Line g, figs. 1-2 Pl. minutus, 3 Pl. costatus, 4 Pl. minutus, 5 Pl, costae 6 Pl, temdats 7_& Pl. denudatus, 9-23 Pl. triquetrus. Line h, figs. 1-18 Pl. discoideus, 19-23 Pl. discoideus (rotundatus-like young). Line i, figs. 1-14 Pl. discoideus, 15-17 Pl. discoideus (var. elatior Sand.). Line k, figs. 1-2 Pl. discoideus, 83-11 Pl. trochiformis. Line 1, figs. 1-11 Pl. trochiformis. Line m, figs. 1-2 Pl. "pharm 83-4 Pl. discoideus, 5 Pl. tgchivermis 69 Pl. discoideus. Line n, figs. 1-7 Pl. discoideus, 8-12 Pl. trochiformis. Line 6, figs. 1-14 Pl. trochiformis (rotundatus young), 15-18 Pl. trochiformis. Line p, figs. 1-8 Pl. trochiformis (rotundatus young), 9-13 Pl. tenwis, 14-20 Pl. minutus. Line q, fig. 1 Pi. erudets 2-4 Pl, costatus, 5-11 Pl. tenuis, 12 Pl. fens’. 138-16 Pl. discoideus, 17-18 Steinheimensis, PI, tochiformis * discoideus. Line r, figs. 1-4 PZ. "pekvarms 5 10 Pl. trochiformis. discoideus, Line s, figs. 1-8 PU. trochiformis, 9-12 Pl. trochiformis (var. pyrguliformis Sand.). Cueck List By Sections AND ForMATIONS. Formation a. Stratum a3, Second Hole, Old Pit, Section 5. Pl. Steinheimensis, var. aequiumbilicatus, line a, figs. 1-2. Pl. Steinheimensis, line a, figs. 3-4. Pl. seinkchvensie, line a, figs: 7-8. Pi. tenuis, line a, figs. 5-6, 9-12. Pl. discoideus, line a, fig. 13, b, 1-4. Formation d, Section 5. Pl. discoideus, line b, figs. 5—6,16. Pl. trochiformis, line b, figs. 7-10. Pl. minutus, line b, figs. 11-15. Formation e, Section 6. Pl. discoideus, line ¢, figs. 1-13. Pl. trochiformis, line d, figs, 18-19. Pl. Kraussii, line d, figs. 1-17. Pl. minutus, line e, figs. 1-5, 7-8. Pi, emacivs Vine e, figs. 10-12. Pl. denudatus, line e, figs. 13-14. * Pi. costatus, line e, fig. 9. Pl. writs, line e, fig. 6. Pi, mints line e, figs. 15-17. Formation f, Section 6. Pl. Kraussii, line f, fig. 9. Pi. tenuis, line e, figs. 18-27, f, 1-8, 10-12. Pl. discoideus, line f, figs. 13-19. Pl. minutus, line g, figs. 1-2, 4. Pl. “mints, line g, fig. 6. Pl. denudatus, line g, figs. 7-8. Pl, covers line g, fig. 5. Pl. costatus, line g, fig. 3. Pl. triquetrus, line g, figs. 9-16. OF PLANORBIS AT STEINHEIM. Formation h, Section 6. Pi. triquetrus, line g, figs. 17-23. Pi. Pi. AU: Tf, ~ Pi. Pi. JPUh JEN, JA Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pi. Pil. Pi. Pi. discoideus, line h, figs. 1-18, i 1-14, k 1-2. diseoideus (rotundatus-like young), line h, figs. 19-23. discoideus (var. elatior Sand.), line i, figs. 15-17. trochiformis, line k, figs. 8-11, 1 1-11. Formation i, Section 6. discoideus, line m, figs. 3-4, 6-9. trochiforms line m, figs. 1-2, 5. discoideus, Formation k, Section 6. discoideus, line n, figs. 1-7. trochiformis, line n, figs. 8-12, 0 15-18. trochiformis (rotundatus-like young), line 0, figs. 1-14, p 1-8. tenwis, line p, figs. 9-15. Formation 1, Section 6. minutus, line p, figs. 14-20. denudatus + 70" mune, Une q, fig. 1. denudatus, line q, figs. 2-4. tenuis, line q, figs. 5-11. Steinticimensis, line q; fig. 12. discoideus, line q, figs. 13-16. trochirormis ine q, figs. 17-18, r 1-4. trochiformis, line r, figs. 5-10, s 1-8. trochiformis (var. pyrguliformis Sand.), line s, figs. 9-12. Puate II. Magnified 2 diameters. List or Spectres. discotdeus, line ¢, figs. 17-19, d 1-11, e 1-12, f 1-14, g 1-9, h 1-10, i 5-9, 1 15-17. eoehiores lime vis tio We trochiformis, line a, figs. 16, 1 Amis trochiformis var. elegans, line a, fig. 15. minutus, line a, figs. 8-13, ¢ 2-4, d 12-16. costatus (var. major Hilg.), line b, fig. 15. Pl. parvus, line a, figs. 6-7, 20-22. Pi. Pi. Tithe Pi. Pi. Pi. Pi. mimtus (narvus Hilg. pars.), line k, figs. 1-4, 11. erescens, line a, figs. 1-5, 17-19, 23, b 16-17, ¢ 9-16, i 10-14. orystomus (var, revertens Hilg.), line k, figs. 5-10, m 10-14, p 6-14. oxystomus, line a, figs. 14, b 1-14, ¢ 1, 5-8, k 12-18, 1 1-3, m 2-9, 0 2. | supremus, line 1, figs. 12-14, n 1-7, 0 3212, p 1-5. oxystomus var. cochleatus, line |, figs. 4-11. supremus var. turritus, line n, figs. 8-13, 0, 1. 109 110 HYATT ON THE TERTIARY SPECIES Cuecxk ‘List sy Lives. Line a, figs. 1-5 P/. crescens, 6-7 Pl. parvus, 8-13 Pl. minutus, 14 Pl. oxystomus, 15 Pl. trochiformis var. elegans, 16 Pl. trochiformis, 17-19 Pl. crescens, 20-22 Pl. parvus, 23 Pl. crescens. Line b, figs. 1-14 Pl. oxystomus, 15 Pl. costatus var. major, 16-17 PI. erescens. Line ¢, fig. 1 Pl. oxystomus, 2-4 Pl. minutus, 5-8 Pl. oxystomus, 9-16 Pl. crescens, 17-19 Pl. discoideus. Line d, figs. 1-11 P/. discoideus, 12-16 Pl. minutus. Line e, figs. 1-12 Pl. discoideus. Line f, figs. 1-14 P/. discoideus. Line g, figs. 1-9 Pl. discoideus. Line h, figs. 1-10 Pl. discoideus. Line i, fig. 1 Pl. "gchiformis 2-4 Pl. trochiformis, 5-9 Pl. discoideus, 10-14 Pl. crescens. Line k, figs. 1-4 Pl. "2 (parvus Hilg. pars.), 5-10 Pl. fos" (var. revertens EL] 3) lula le ee (parvus Hilg., pars.), 12-18 Pl. oxystomus. Line l, figs. 1-3 Pl. oxystomus, 4-11 Pl. oxystomus var. cochleatus,! 12-14 Pl. supremus, 15-17 Pl. discoi- deus. Line m, fig. 1 Pl. trochiformis, 2-9 Pl. oxystomus, 10-14 Pl. pres Line n, figs. 1-7 Pl. supremus, 8-13 Pl. supremus var. turritus. Line 0, fig. 1 Pl. supremus var. turritus, 2 Pl. oxystomus, 3-12 Pl. supremus. Line p, figs. 1-5 Pl. supremus, 6-14 Pl. iin Curck List By Srcrions AND ForMATIONS. New Pit, South side. Formation f, Section 8. Pl. crescens, line a, figs. 1-3. Formation h, Section 8. Pl. parvus, line a, figs. 6-7. Pl. crescens, line a, figs. 4-5. Pl. oxystomus, line a, fig. 14. Pl. minutus, line a, figs. 8-13. Formation i, Section 8. Pl. trochiformis var. elegans, line a, fig. 15. Pi. trochiformis, line a, fig. 16. Pi. parvus, line a, figs. 20-22. Pl. crescens, line a, figs. 17-19, 28. Pl. oxystomus, line b, figs. 1-11. Formation k, Section 8. Pl. oxystomus, line b, figs. 12-14. Pl. crescens, line b, figs. 16-17. Pl. costatus var. major, line b, fig. 15. Formation 1, Section 8. Pl. oxystomus, line ¢, fig. 1. Pl. minutus, line ¢, figs. 2-4. Formation m, Section 8. Pl. oxystomus, line ¢, figs. 5-8. Pi. crescens, line ¢, figs. 9-16. < 1This species is erroneously referred to as var. rotundatiformis on p. 12. OF PLANORBIS AT STEINHEIM. aialal Cloister Pit. Formation k, Section 1. Pl. minutus, line a, figs. 12-16. Pl. discoideus, line ¢, figs. 17-19, d 1-11, e 1-12, f 1-14. Formation 1, Section 1. Pi, mimes line k, figs. 1-4, 11. Pl. crescens, line i, figs. 10-14. Pl. orysioms Vine k, figs. 5-10. Pl. oxystomus var. cochleatus, line 1, figs. 4-11. Pl. supremus, line 1, figs. 12-14. Pi. discoideus, line g, figs. 1-9, h 1-10, i 5-9. Pi, *pckiferms line i, fig 1. Pi. trochiformis, line i, figs. 2-4. Pl. oxystomus, line |, figs. 1-3. SS aN Formation m, Section 1. Pi, orysioms line m, figs. 10-14, p 6-14. Pl. oxystomus, line m, figs. 2-9, 0 2. Pl. supremus, line n, figs. 1-7, 0 8-12, p 1-5. Pl. supremus var. turritus, line n, figs. 8-13, o 1. Pi. discoideus, line |, figs. 15-17. Pl. trochiformis, line m, fig. 1. Prats IV. Magnified 8 diameters. Line a, figs. 1-7 Pl. minutus. Line b, figs. 1-4 Pl. minutus, 5-6, 9 Pl. triquetrus var. turbinatus, T-8 Pl. timers Line ¢, figs. 1-8 Pl. triquetrus, 4-5 Pl. timetns 69 PI, denudeis 1 Line d, figs. 1-5 P/. %emmiats uncoiled in various degrees, 6-10 same, but more turbinate. Line e, figs. 1-5 Pl. denudatus, uncoiling excessive, but turbination slighter than in 6-8; 9 broken adult, whorl of, 10, the young of the same shell perfectly flat and in part closely coiled, 11, young stage of another broken out. This, though not a distinct figure shows that the coiling is in the same plane in the young. Line f, figs. 1-8 Pi. costatus Line g, fig. 1, Pl. costatus, 2 Pl. costatus var. distortus, 3-10 Pl. costatus. Line h, figs. 1-7 Pl. costatus (Pl. costatus var. major of Hilg.), var. acuto-costatus. Line i, figs. 1-5 Pl. costatus var. platystomus, 6-12 Pl. costatus (=major Hilg. pars.), var, obtuso-costatus, much distorted. Line k, figs. 1-7 P7 costatus var. obtuso-costatus (= Pl. major Hilg. pars.), 8 PZ. conais PLATE V. : Magnified 534 diameters, Line a, figs. 1-4, P/. levis from Undorf. Line b, figs. 1-7, Pl. parvus. Line ¢, figs. 1-6, Pi. crescens 7 Pl. cresre* turretted variety. parvus, 1 The different forms of P/. denudatus, Pl. costatus var. distortus and Pl. costatus var. platystomus would probably have been more clearly understood if I had given them sep- arate specific names and called them respectively Pl. denu- datus, Pl. distortus, and Pl. platystomus, but having neglected doing this, and even in one place on page 10, spoken of Pl. denudatus, as variety denudatus, I thought it best to make no alterations in the nomenclature used in the text, p 65. 112 HYATT ON THE TERTIARY SPECIES = Line d, figs. 1-7 Pl. crescens. Fig. 2 line d shows a specimen of the young, which at a very early age begins to show the compressed form of the whorl, which distinguishes the adult of 7. crescens. In fact the three young specimens on this line form a series in this respect, fig. 2 being the most compressed, fig. 6 next, and fig. 4 the least, although figs. 2 and 4 are of the same age and fig. 6 a little older. The adults of all of the three would have been about equally compressed in form. Puate VI. Magnified 534 diameters. Line a, figs. 1-3 P7. levis from Undorf, 4-7 P27. ozoms (= revertens Hilg.). Line b, figs 1-6 Pl. -sv"s (= revertens Hilg.), somewhat stouter than the normal forms of P27. levis, even in the young, fig. 5. Line ¢, figs. 1-5 Pl. oxystomus with extremely stout whorls even in the young. In this variety the young are very similar to the rotundatus-like young of Pl. trochiformis, see pl. 2, line 0, figs. 1-14, line p, figs. 1-8. They, however, are distinct in the aspect of the upper umbilicus, in the carinations and shell, and outline of the opening of the whorl, especially in the younger stages. Compare also figures on lines 0 and p, pl. 3, with figures of young of P7. oxystomus var. cochleatus, pl. 3, line 1, figs. 4-11, which also have extremely stout whorls in the young. Fig. 6 is.a fine specimen of the transition from the normal variety to the turretted form, variety cochleatus of Pl. oxystomus.1 Line d, fig. 1 Pl. oxystomus var. cochleatus, full grown shell,? figs. 2-4 Pl. oxystomus, normal variety, showing the identity of a young shell, fig. 4, with a shell of the same size of Pl. levis, from Undorf. Line e, fig. 1 Pl. supremus var. turritus, figs. 2-4 Pl. supremus. Pratt Vile Magnified 4 diameters. . Line a, figs. 1-2 P/. levis, Undort. Figs. 3-5 are deeply umbilicated forms of Pl. Steinheimensis which are similar to fig. 1 in this respect and in the form of the whorls. Fig. 6, P/. /evis, Undorf, to compare with figs. 7-9 Pl. Steinheimensis, adult and young with a similar form of whorl. Fig. 10 an unusually turbinate form of PJ. tenvis. Line b, figs. 1-2 P/. Steinheimensis for comparison with figs. 83-4 P/. levis, Undorf. Fig. 5 Pl. Steinheim- ensis with sub-angular outer whorl for comparison with fig. 6 PZ. levis, Undorf. Figs. 7,8 Pl: Steinheimensis, younger stages of same variety as fig. 5. Line c, figs. 1-38 Pl. Steinheimensis with very slight unsymmetrical and cylindrical whorls, figs. 4,5 PU. Steinheimensis normal variety (see specimens) with cylindrical whorls, figs. 6, 7, normal variety with unsym- metrical whorls and a deeper, narrower umbilicus on the lower side than in the preceding. Fig. 8 Pl. Stein 2 heimensis var. aequiumbilicatus ? Line d, figs. 1-6 specimens of Pl. Steinheimensis with stouter whorls transitional to those of line e. Fig. 7 Pi. tenuis, from the rocks of the Upper Tier of the Cloister Ridge. This has young like the adult of PZ. Steinheimensis. Line e, fig. 1 Pl. Steinheimensis with an extremely turbinate tendency expressed in the last whorl. Figs. 2-4 are large fine specimens of the normal unsymmetrical varieties, figs. 5-7, are Pl. seni". ,«;, for comparison with these and others below, for example compare the umbilicus of fig. 7, with fig. 6, line ec. Line f figs. 1-3 Pl. sreifi2s ysis, SOMeWhat more advanced stage of transition, figs. 4-7 Pl. tenuis. Line g, Pl. tenuis. Line h, Pl. discoideus, figs. 1-4 flatter variety with acute carinations, figs. 5-7 stouter varieties with gener- ally less acute carinations. Line i, Pl. discoideus with rotundatus-like young, showing transitions to the varieties of PJ. trochiformis having similar young. 1 See in this connection remarks on page 70. 8 See for discussion of figures on this plate, p. 83. 2 This shell has a much shallower umbilicus than the one figured on pl. 9, fig. 11, and described on p. 12. OF PLANORBIS AT STEINHEIM. 113 Prats VIII. Magnified 4 diameters. Line a, fig. 1 PZ. Steinheimensis, same as fig. 13, line h, pl. 1, an aged specimen of extraordinary size, show- ing the deflection and contraction of the last formed or oldest part of the outer whorl; fig. 2 P/. Steinheim- ensis, also very large and beginning to show senile changes, same as fig. 18, line f, pl. 1. Figs. 83-5 Pl. oxystomus; fig. 3 has the spiral deflected as the result of a wound, possibly also in part as the result of old age; figs. 4-5 are probably both distorted solely by senile or geratologous metamorphoses. Line b, figs. 1-6 Pl. "ifn" (=revertens, Hilg.); figs. 1 and 6 are normal forms with spiral deflection probably due to old age; fig. 2 shows a cicatrix which has produced a precisely similar effect wpon the size and direc- tion of the last part of the last whorl; fig. 3, probably distorted from some normal disease or old age ; figs. 4, 5 are undoubtedly weak or diseased specimens in which the spiral is very greatly deflected as in Pl. denw- datus.' Line ¢, figs. 1-6 P7. "ze" ‘These specimens are all distorted apparently from the. results of wounds or in- juries received during the building of the last whorl. Line d, figs. 1-4 Pl. supremus; all are more or less deflected, and the striae enlarged as the result of geratol- ogous changes.? Line e, figs. 1-8 Pl. trochiformis, fig. 1 shows a deflected spiral probably due to disease. Fig. 2 is a front view of fig. 10, line r, pl. 2. The distortion or deflection of the whorl is evidently caused by the age and perhaps also, diseased condition of the specimen, as may be seen from the enlarged striae and thickened shell. Fig. 3 is distorted on account of a severe wound.® . PrarE 1X. Magnified 4 diameters. Figs. 1-7 Fourth Series showing transformations from P27. levis var. ““"jcize* Undorf, fig. 1(= fig. 1, line a, pl. 7), to Pl. trochiformis fig. 7. Fig. 2 Pl. Steinheimensis, 3 Pl. syniiti® ci, 4 Pl. tenuis, 5 Pl. discoideus, 6 Pi trochiformis * discoideus. Figs. 8-11 Z%ird: Series-showing transformation from P/. levis var. "32" Undorf, fig. 8 (= fig. 1 pl. 6), to Pl. supremus var. turritus, fig. 11. Fig. 9 though spoken of in the text p. 10 and elsewhere as PZ. oxystomus, is really a specimen of revertens Hilg.—= Pl. 42" out of the Sand Pits, Steinheim, and ought to have been supplemented by a figure of true Pl. oxystomus such as fig. 1, line ¢, pl. 6, but this plate was already finished before I became aware of the need of another figure. Fig. 10, PZ. supremus, is the flat and suleated variety of this species. Figs. 12-15 Second Series showing transformations from PU. levis var. 775 Undorf, fig. 12 (= fig. 1 pl. 5), to Pl. erescens, trochiform variety, fig. 15. Fig. 13 Pl. veers The gap here which should have been filled by a figure of Pl. parvus was left unfilled purposely on account of the number of figures necessary, see pl. 5, lines b, ¢. Fig. 14, Pl. erescens, normal variety. Figs. 16-28 Mirst Series, figs. 16-20, third sub-series includes P27. levis var. "ims Undorf, fig. 16 (=fig. 2, line a, pl. 7), DZ. "iit fig. 17, also Pl. minutus, fig. 18, which has cylindrical whorls showing one of the tran- sition forms from Pl. "74" to the normal Pl. minutus, fig. 21 at the base of the next sub-series,‘ also fig. 19, true Pl. triquetrus, and fig. 20, Pl. triquetrus var. turbinatus. Figs. 21-24, second sub-series includes P/. minutus, fig. 21, normal smooth form, which leads into Pi. iis, HES. 22, 23, and Pl. minutus var. distortus, fig. 24. The intermediate forms, etc., are given on pl. 4 and described in the text on pages 59 to 66. 1See also description on p. 13, of other forms, and discus- 3 Compare, also, fig. 11, line s, pl. 2. sion on pp. 15, 17. ° 4 The transition forms from Pl. minutus to Pl. triquetrus are 2 Compare, also, pl. 3, figs. 1-2, line n, 5, 6, line g, 4, line _ photographed on PI. 4. h; pl, 2. figs. 2, 3, line h, fig. 6, line i. 114 TERTIARY SPECIES OF PLANORBIS AT STEINHEIM. Figs. 25-28, first sub-series includes as previously mentioned p. 65, two sub-series, the acuto-costate and the obtuso-costate, but as they are both exactly parallel in the production of the distorted varieties, platystomus and distortus, it was not considered necessary to go to the expense of making up and photographing another plate. Fig. 25 Pi. evans fio, 26 Pl. costatus, the costae are coarser in these figures than in the specimens and so also are those of Pl. costatus var. distortus, figs. 27, 28, but they show accurately the forms of this sub- series. Nore. These plates are described in the text as having been photographed by Sonrel and Black, but the negatives prepared by them could not be used by the Heliotype Company, and the whole were successfully rephotographed by the latter. @°de6G 415 16-17 18 19 i 0° @ ~ Qp = es 17 16 We) cae a's) 6126) ecGi [4calDGe}6 I ons 9) ni 8 aCe Q )=2: 9" @- -“@-©- re as C6 6 a eee Paes ie i : Y ’ i : J is ih f ‘4 re Sis\ spat ay dd ae | ie ale i ee - hae p . Zi ae Ft pS Pye : : : : 7 ay ae a re ‘WISHNIGIS LV SISMONVTd JO SHIDUdS AAVILEAL HAL nee en re tn Sree epee oh oop en. sw Sr TE Tre ee OEE SE z f | RS EDEL AIL AE AIOE = age tobe. wo apegener } | { A “aes yy Pr A ell i i s 8 ) ue). nivers. Memoirs, Bost aI a0. i ‘) } ale © ' i . - y - a ' ' 7 rs ik, ' » ’ = > ' Laat f 1 a ey is i — = ee - i eo : ‘ . oe 1 x l 7 ~ 1830. ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY, 1880, THE DEVONIAN INSECTS OF NEW BRUNSWICK. BY SAMUEL H. SCUDDER. BOSTON: PUBLISHED BY THE SOCIETY. 1880. Ture DevontAn Insects or New Brusnwicx. By Samuret H. Scupper. CONTENTS. I. Introduction. VIII. Xenoneura antiquorum. II. The structure of the wings in Ephemeridae; IX. General summary. with a note on a jurassic may-fly. X. Note on the geological relations of the fossil III. Platephemera antiqua. insects from the devonian of New Bruns- IV. Gerephemera simplex. wick. By Principal J. W. Dawson, LL.D., V. Homothetus fossilis. 15 18 fSi5 ues VI. Dyscritus vetustus. XI. Explanation of the plate. VII. Lithentomum Harttii. Il. IntrrRopvuctTIoNn. INVESTIGATION of fossil remains of the oldest insects is nearly always extremely diffi- cult and perplexing, and often very unsatisfactory in its results. The interest, however, necessarily attaching to the beginnings of life, warrants any labor that may be expended upon them. Especially is this true of the fragments treated of in this paper, because they are as yet the only insect remains which have been found in rocks older than the carboniferous formation in any part of the world. The writer may be pardoned for adding that they possess a special attraction for him, as among the specimens which first directed his particular attention to fossil insects, and he only regrets that so long a period as fifteen years should have elapsed before their full discussion. The remains consist entirely of broken wings, and were discovered in 1862, by the late Professor C. F. Hartt (at the time of his death director of the geological survey of Brazil), while searching for plant remains in the devonian shales near St. John, New Brunswick. The locality — called Fern Ledges by Mr. Hartt, from the abundance of plant remains which occur in the black shales that are interstratified with the prevailing sandstones — is about a mile west of the town of Carleton, not far from St. John. The rocks form a series of ledges, exposed on the sea-shore between high and low water marks. The beds of sandstone and shale, of which they are composed, have a seaward dip of about 45°, and a strike of about W. 10° N., corresponding very nearly to the trend of the shore. The fossiliferous shales between the enclosing sandstones are worn away by the action of the water, leaving the fossils accessible in only a few places. The whole deposit is of very limited extent; it reaches along the shore for about three hundred and twenty-five paces, exposing a thickness of strata of about forty-five meters, with a width of about ninety meters. 4 SCUDDER ON THE DEVONIAN The specimens discovered were six in number, some of them with their reverses. They are now in the museums of the natural history societies of St. John, N. B. and Boston, Mass. I am much indebted to Mr. G. F. Matthew, of the former institution, and to Professor A. Hyatt of the latter, for the opportunity of studying these specimens anew at my leisure. The plan of the present paper will be seen by a glance at the table above. As the simpler devonian insects, first described, have certain special relations with the Ephemeridae, their description is preceded by an account of the wing structure of the modern May-flies, as a basis of comparison; each of the devonian species is then separately described, and its affinities discussed, and the whole is followed by a general summary. The stratigraphical question being, in this instance, of special importance, Principal Dawson has kindly prepared for me a statement of the case with which the article closes.t II. Tue SrrucTURE OF THE WINGS IN EPHEMERIDAE; WITH A NOTE ON A JURASSIC SPECIES. The following statement considers mainly the direction and division of each of the principal veins, and the comparative areas covered by them. The marginal vein forms the costal border. The mediastinal vein is absent or, perhaps, amalgamated with the scapular in Lachlania, Oligoneuria and Tricorythus; in all others it is simple, and extends to, or almost to, the tip of the wing, keeping at a very short and nearly uniform distance from the margin, with which it is generally connected, especially on the apical half of the wing, by frequent cross veins. On the basal half, the cross veins may be as abundant as apically, but they are generally rarer, and may be entirely absent, even when frequent apically ; or they may be absent throughout. In very rare instances, as in Coloburus, an intercalary vein may be found in the apical half of the wing between this vein and the costal margin. The scapular vein is simple, and reaches the tip of the wing, excepting in the three genera mentioned above, where it may perhaps be said to be amalgamated with the mediastinal, as shown by its forking near the middle of the wing in Tricorythus; in Lachlania, however, it terminates not at the tip, which possesses only the marginal vein, but near the middle of the costal border. It is always connected with the vein below by a greater or less number of, usually many, cross veins. The externomedian vein is always compound, and always covers at least half, usually much the greater part of the wing. It always divides at the very base, and the upper branch is always forked, while the lower may, although rarely, remain single, and is usually forked to a less extent than the upper branch. Three is, therefore, the smallest number of nervules which may reach the margin in the area covered by 1 Besides the references given in the bibliography under Dawson’s Acadian Geology, 2d ed., pp. 513-23. 8vo. London, each species, notices of the devonian insects will be found 1868. Darwin, Descent of man, I, 360. 12mo., London, 1871, in the following places: Hartt, on the Devonian plant- Stett. Ent. Zeit., xxvii, 145-53, passim. Trans. Entom. locality of the Fern Ledges, Lancaster, N. B., in Bailey’s Ob- Soe. Lond., 1871, 38-40. American Naturalist I, 445, 625- servations on the Geology of Southern New Brunswick, pp. 26. Proc. Boston Soc. Nat. Hist., X, 96, XI, 150-51, 131-40. 8vo., Fredericton, 1865; reprinted in substance, in Memoirs Boston Soe. Nat. Hist. II], 13-21, passim. INSECTS OF NEW BRUNSWICK. 5 the vein, and this number we find in Oligoneuria and, perhaps, in Lachlania. The portion of the area of this vein covered by the upper branch and its forks is almost always greater, generally considerably greater, than that covered by the lower branch; an exception to this will be found in Polymitarcys where the lower area is greater, owing to unusual breadth of wing combined with narrowness of the area covered by the intermedian vein, which has been crowded out of much of its natural ground by this lower branch. Some of the allies of Polymitarcys, especially “Asthenopus and Pentagenia, also have this area of the lower branch larger than usual, although not larger than that of the upper branch, and some other genera not placed near it exhibit a similar propensity ; but asa general thing, the area covered by the lower is scarcely more than half as large as that covered by the upper branch, and not infrequently it is less than one third its extent. The upper branch usually forks close to the base, occasionally at the very base, and sometimes the upper of the forks is amalgamated at the base with the scapular vein, as in Asthenopus, Tricorythus and Chloeon, and to a certain extent in Coenis, so as to give it the appearance of originating from that vein, and of complete independence of the externomedian; whether thus severed from its connections, or plainly arising from the externomedian root, this upper fork of the upper branch runs in proximity to the scapular vein, parallel or subparallel to it, and, excepting where the venation is occasionally simple (as in Oligoneuria, &c.), always emits from its lower surface in the central portion of the wing one, two, or three nervules; the first and second of these nervules are usually pretty near together at base, but all generally reach the border at unequal distances apart, the inequality being made good by intercalary longitudinal nervules ; these intercalary nervules often curve at their inner extremities toward or to one or another of the adjoining nervules, assuming then the appearance of regular branches, while the nervules proper are themselves oftener detached from their base; so that it is sometimes difficult to tell whether a given vein should be considered normal or intercalary. The lower fork of the upper branch is occasionally simple, as in the Tricorythus, but usually forks once at about the middle of its course, rarely near the base, and very frequently encloses an intercalary nervule between these branches, but no intercalary nervules (excepting such as often break up the extreme margin into an irregular meshwork of veins) ever intervene between the upper nervule of this fork and the lower nervule of the upper fork, nor between its lower nervule and the upper nervule of the lower branch of the externomedian vein, excepting in the rare instances where this lower nervule is detached from its base, and takes on the form of an intercalary nervule. This lower branch, as has been said, is usually forked to a less extent than the upper branch, but a conspicuous exception is found in Polymitarcys where the branch is made up of a large number of sub-convergent simple rays, directed from the outer margin toward various parts of the upper internomedian nervule, but generally lost before reaching it. In general. however, its area is only about half that of the upper branch; it usually forks close to the base, and each or either of its branches may again subdivide once ; all other nervules in the area are sure to be intercalary; where it forks only once there is usually a single intercalary nervure midway between the branches, which seems to belong to one or the other of them and to represent its fork ; while between it and either branch there 6 SCUDDER ON THE DEVONIAN may be other shorter intercalaries; the only exception to this general statement is the case of Polymitarcys already cited, where after division at the base the upper fork must be looked upon as breaking up at once into three rays, while the lower severed from its connections breaks up similarly into a couple of forked rays; the amount of abnormal divergence in this case may be better seen, by stating that it is the only genus of Ephem- eridx in which this area is carried around the lower outer angle of the wing; in all others it stops short of, usually far short of this angle; here it reaches around it half way along the anal margin. The genus agrees, however, with all the others in that all the branch- ing occurs in the basal half of the area. In Oligoneuria and Lachlania the branch is simple and undivided, unless the apparent branch in the latter should be looked upon as such, and not as a cross nervure, like the more directly transverse veins above it. The area of the internomedian vein is never great, although always more extensive than that of any other vein but the externomedian, and it always includes the lower outer angle of the wing, excepting as above specified in Polymitarcys, and excepting also in the full-angled Tricorythus, where the anal area disputes its sway. Its construction is gen- erally similar to that of the lower branch of the extermomedian vein, although from the form of the area covered by it, its absolute appearance is very different; moreover, one rarely finds in it any intercalary nervures, excepting such as sometimes line the- extreme border, the smaller nervures almost always originating from the main stems ; the exceptions are found in Leptophlebia, Cloeon, and Baetis. The vein almost invariably forks at its extreme base, and from the upper of these branches sends either, rarely, a single shoot, or, much more frequently, a half a dozen, occasionally a dozen simple or forked shoots to the margin. In the interesting fossil described in the note at the end of this section these shoots appear to originate from the lower branch, the upper remaining simple, just as rarely occurs in living forms as e. g., in some species of Leptophlebia. The anal vein invariably plays an insignificant part, and is apparently sometimes want- ing. Its area seldom reaches even half way along the anal margin, but in Tricorythus it extends even around the lower outer angle, fairly upon the outer margin. Here it is composed of a single vein with three or four short but widely divergent branches ; usually it is forked at the base, and occasionally one or the other of these forks imitates the rayed branch of the internomedian by sendmg a number of parallel branches, often closely crowded, to the margin. This account of the neuration of the Ephemeridae is based upon much more extended material, and a longer study than that formerly given by me in my first quarto paper on fossil neuroptera, and corrects it in several important particulars, especially in the account of the internomedian vein, which was eroneously stated to be simple? and in the fuller statement of the divisions of the externomedian vein. Note on a Jurassic May-fly. Hexagenites Weyenberghii, gen. et sp. nov.:—A frasment of a wing only is preserved, in 5 fo) fo) ) which the entire costal area and base are wanting. The neuration of the parts that remain 1 This statement was evidently the result of some over- same memoir it was remarked that the internomedian vein sight, since in the digest given on a subsequent page of the was “ similar in character to the vena externomedia.” INSECTS OF NEW BRUNSWICK. Uf is perfect and indicate an insect whose alar expanse was nearly 45 mm., and which is most nearly related to Hexagenia; the first inferior nervule of the upper fork of the upper branch of the extermomedian vein is thrown off some way before the middle of the wing; the lower branch forks at some distance beyond the middle of its course, and encloses between its branches a single intercalary nervule which extends nearly to the widely spreading fork. Ata short distance from the base of the wing the lower branch of the externomedian vein has divided into three branches, the middle one nearer the upper than the lower, all of which continue undivided to the margin; two intercalary nervures of unequal length occur in each of these interspaces, extending almost half way to the base in the lower interspace, besides many short ones near the margin; the lowest of these branches is considerably curved and subparallel to the inner margin. The internomedian vein probably divides at the very base into two branches, the upper of which is simple, runs subparallel to the lowest externomedian nervule, striking the angle of the wing, while the other branch is in close proximity to it and throws off a large number of sin- uous simple branches to the anal margin, in doing which its outer half follows an irreg- ular course by a slight change of direction with each emission. The cross-veins are mod- erately frequent and subuniform throughout the portion of the wing which is preserved excepting in the internomedian area, and the border is much broken by interealary nerv- ules into cells which are quadrate and generally much longer than broad. The anal area must be very contracted and the form of the wing closely resembles that of Hexa- genia. The specimen is from Solenhofen, and is in the British Museum. The description is drawn up from a very clear sketch magnified 7 diameters, taken with the camera and pub- lished by Rev. Mr. Eaton in the Transactions of the Entomological Society of London, 1871. Pl. 1, fig. 10.- The species is dedicated to my friend Dr. Weyenbergh, of Cordoba, who has done so much in increasing our knowledge of the Jurassic insect fauna of Bavaria. III. PLATEPHEMERA ANTIQUA. Pl. 1, figs. 5, 9, 10. Platephemera antiqua Scuvp., Can. nat., (n.s.) ut, 205, fig. 2 (1867) ;—Is., Geol. mag., Iv, 387, pl. 17, fig. 2 (1867) ; —In., Dawson, Acad. Geol., 2d ed., 524, fig. 181 (1868) ; — Iz., Amer. nat., 1, 630, pl. 16, fig. 3 (1868) ; — In., Geol. mag., y, 173, 175-76 (1868) ; — Pack., Guide ims., 77-78, pl. 1, fig. 3 (1869);— Nicuors., Man. pal., 185, fig. 128 (1872) ; —Is., Ane. life hist. earth, 145, fig. 89 (1877) ; — Dana, Man. geol., 2d ed., 273, fig. 550 A (1874) ;— Rorm., Leth. geogn., pl. 51, fig. 9 (1876). Mentioned without name, as the first species, in my letter to Mr. Hartt on the Devonian Insects of New Brunswick (1865) ;— Bailey, Obs. geol. south. New Brunsw., 140 (1865) ; — Amer. journ. sc., (2) xxxIx, 357 (1865) ;— Can. nat., (n.s.) 1, 23 (1865); — Trans. entom. soc. Lond., (3) m1, 117 (1865). See also Amer. journ. sc., (2) xn, 277 (1865). The wing was ample (whence the generic name) and gigantic. Probably a third of the wing is wanting at the base, besides the greater part of the extreme outer edge, but the fragment preserved enables us to judge, probably with considerable accuracy, both the general structure and, by the direction of the nervules and of the margins, the general 8 SCUDDER ON THE DEVONIAN form of the wing, which is presumed to be much as outlined on the plate. The wing was probably more than 60 mm. in length, and about 27 mm. in breadth; the alar expanse was therefore at least 125 mm., and probably 135 mm., and the two figures have been so placed as to indicate this expanse. This is more than double the ordinary size of the larger Ephemeridae and the largest mentioned in Eaton’s paper on these insects has an expanse of only 78 mm., and the largest of the jurassic species only 65 mm. The costal margin is very gently arcuate; the apex probably somewhat pointed, toward which the upper veins are directed without additional arcuation; the greatest breadth was probably a little before the middle of the wing, and the outer perhaps half as long again as the anal margin. The marginal vein runs close to but does not form the margin of the wing, the latter being indicated in the figures on the plate by a dotted line. The mediastinal vein runs as close as possible to the margin, and is not connected with it by cross veins; these two veins apparently run side by side to the apex, when the marginal disappears and the mediastinal takes its place close to the border. The scapular vein runs sub-parallel to the mediastinal, but at double the distance from it apically as basally, the change occurring rather abruptly near the middle of the preserved portion of the wing; it is connected with the vein above by straight cross-veins at tolerably regular, rather frequent intervals. As usual in this family, the externomedian vein is apparently divided, probably not far from, or at the base, into two stems, and the upper of these stems is again divided, prob- ably at some distance from the base, into two principal branches; the main portion of the upper branch runs parallel to, but somewhat distant from the scapular vein, approaching it, however, apically, and is everywhere connected with it by cross-veins, very much as in the mediastino-scapular interspace; it throws off from its inferior surface several inequi- distant feeble offshoots; the first originate a little before the middle of the wing, and run irregularly but with a gentle downward curve to the outer margin ; they have between them and between the outermost and the main branch a number of equally irregular intercalary nervules, all of which are connected together by cross-veins, and thus form over the whole area a mesh work of irregular but usually hexagonal and longitudinally elongated cells, making it impossible to distinguish between normal and interealary veins, since the latter are as prominent as the former, and invariably arise from cross-veins ; while whatever nervules lie next the main branch are united with it by frequent and, equally irregular cross-veins fallimg from the main branch quite in the manner of the oft shoots proper, and forming cells only slightly larger than the others, although generally transversely elongated; together there are about nine rows of cells between the main upper branch and its first offshoot. The lower branch of the upper stem is simple and, originating apparently near the middle of the basal half of the wing, diverges at first slightly from the upper branch, afterwards a little more rapidly, and in its apical fourth curves downward considerably, and is somewhat irregular in its course; its direction is in general parallel to the offshoots, and especially the nearer offshoots of the upper branch, and on the border it is separated from the apex of the upper branch by nearly one-third of the outer margin of the wing; in its simplicity this branch resembles the same nervure oD? in Tricorythus, which is peculiar in this particular among modern Ephemeridae. As in INSECTS OF NEW BRUNSWICK. 9 modern Ephemeride generally, there is no intercalary nervule between this lower branch of the upper externomedian stem and the first offshoot of the lower branch, but this interspace is filled with simple and frequent cross veins. The lower externomedian stem is apparently formed on the same plan as the upper, a feature which appears to have no counterpart among living Ephemeridae ; apparently it is composed, like the upper, of two primary branches, which seem to part from each other very nearly at the same considerable distance from the base, (about one-third the distance to the margin), a feature uncommon but not unknown in living Ephemeridae ; but instead of having a single independent intercalary or two between the forks, it has several offshoots . which depend from the upper branch, just as the offshoots of the upper branch of the upper stem do, while between them in the outer half of their course other intercalaries arise, depending from angular cross veins—the whole united by frequent cross veins (again as in the upver area), to form a mesh-work of irregular cells generally pentagonal, although not often longitudinal; there are thus included between these forks about six rows of cells. The interspaces directly adjoming either side of the lower branch of the upper externomedian stem are slightly wider than the interspaces between the nervules in the area of the lower externomedian stem, possess no intercalaries, and are divided by frequent cross veins. ‘The lower branch of the lower externomedian stem also curves downward at the tip, like the lower branch of the upper stem; the area of the lower externomedian stem repeats, therefore, and on only a little smaller scale, the structure of the area of the upper stem, instead of exhibiting, as in recent forms, distinctive features. That portion of the fragment of the wing lying below what we have here considered the lower simple branch of the lower externomedian stem, and which is shown in fig. 10 and not in fig. 9, is so fragmentary and so separated from its basal connections that it is difficult to decide to what area of the wing it belongs; it consists of four rows of cells separated by curving nervules a little more uniform in their course than the minor nervules above, with slightly less frequent cross veins; the cells being slightly larger and more regular, frequently quadrangular and usually longitudinal ; this field belongs of course either to the externomedian or the internomedian area. The general similarity of the structure of the fields would lead one at first to suppose it to belong to the externomedian area, in which case of course our description of the lower stem and its branches should be modified to receive it. As, too, the form of the fragment would indicate that a very considerable part of the region about the anal angle is lost, the reference of this field to the internomedian area would give that area a very great and very unusual preponderance in the wing. But its reference to the externomedian area, which is certainly possible, would involve quite as great an anomaly ; for in that case the lower externomedian stem must be supposed to consist of two branches, the lower lying beyond the present fragment and probably simple, the upper forked and reproducing on a smaller scale the whole of the upper externomedian stem, including the minor offshoots depending from the uppermost branch of each. In this case the area of the lower stem would exceed that of the upper, which occurs in very rare instances in modern Ephemeridae and then only by crowding out of room the lower areas, which the probable wide expanse of this wing would not allow unless this lower area is of an exceedingly disproportionate size. The translation of the facts which I have offered in my description, on the other hand, while it 10 SCUDDER ON THE DEVONIAN requires a very unusual development of the internomedian area, leaves the lower externo- median field in its usual proportionate extent as compared to the upper field, and is further supported by several considerations: chiefly by the probability that where repetitions of structure are found—a mark of simplicity much more common among ancient than among recent insects — they are far more apt to occur between repetitive parts than between those which may not be so exactly compared. On the hypothesis sustained above, this repetition occurs in the fields embraced between the two similarly disposed sets of branches into which one vein is divided. On the other suggested (and apparently the only alternative, for the open interspaces on either side of the lower branch of the upper externomedian stem seem to fix that nervule unquestionably) the repetition would be between the whole of one set of branches of this vein, and one portion only of the two of which the other set of that vein is composed. Other arguments may be advanced from the character both of the nervules and of the cells formed by them and the cross veins, which differ slightly from those in the field next above, a difference greater both in extent and in nature than that existing between what we have considered the upper and the lower externomedian fields. Further than this, the slight change of direction in the course of the outer margin, resulting in a slight emargination of this border of the wing, although apparently not found at all in living Ephemeridae, would be far more likely to occur, does far more frequently occur in other insects, between two adjoining areas than in the middle or other part of one. Considering then the field under discussion as belonging to the internomedian area, we must describe this as plainly of very unusual extent, and as filled as it never is in living types with a large number of intercalary nervules. It may be remarked that none of the many intercalaries in this wing arise indepen- dently, and that they are not more abundant at the extreme outer edge of the wing, as is frequently the case in modern types. The former feature is the more noteworthy, as the independent origin of the intercalary veins in Ephemeridae would naturally be taken as a mark of inferior organization; and yet it does not occur in this oldest member of the group, nor yet in the jurassic species from Solenhofen, described on a previous page; in this last, however, the edge of the wing is more broken by intercalaries than the parts removed from it. The length of the fragment preserved is 42 mm. and its greatest breadth, 25.5 mm. The points in which this insect presents the most striking differences from modern types, and upon which we would establish the genus Platephemera, are: the very similar instead of distinctive structure of the framework of the two sets of branches of the externomedian vein, and of the respective areas included between them; the excessive number of the intercalaries in the area included between the lower set of externomedian branches, and their attachment (in the apical half of the wing) to the upper of these branches — from which the previously mentioned peculiar feature mainly depends; the simplicity of the lower branch of the upper externomedian stem in an unusually ramose wing; the unusual extent of the internomedian area and its rich supply of intercalaries ; the density and polygonal form of the cells formed by the cross veins below the upper externomedian vein; the emargination of the outer border; and finally the vast dimensions of the wing. INSECTS OF NEW BRUNSWICK. 11 If we look to other early types for species akin to this we shall find a whole group of carboniferous insects with reticulated wings, to which this is evidently related. To this belong those forms to which the generic names Dictyoneura and Breyeria have been given m the old world, and Paolia and Haplophlebium in the new. Several new forms, as yet unpublished, are known to me from the American carboniferous rocks. In all these genera, but especially in Dictyoneura and Haplophlebium (which perhaps should not be separated from each other), the wing is very much larger and slenderer (like a dragon-fly’s wing) than the fragment of this devonian wing will allow us to suppose it to be. Ag in these wings, the mediastinal vein is present, and usually runs into the marginal at some distance from the tip of the wing, and the general relation of the principal veins is sim- ilar in all; in none of the others, however, do we find so distinct a meshwork of sub- ordinate veins, nor can they be resolved as here into sets depending from the two prin- cipal branches of the externomedian vein. So that while a general similarity of structure may be conceded, there is no occasion for considering the insects as closely affiliated. The distinction between Platephemera and Gerephemera will be pointed out in treating of the latter insect. This sect comes from plant-bed No. 7 of Professor Hartt, and was the only inseet found at that horizon. In his “ Monograph on the Ephemeridae,”’ Rey. Mr. Eaton treats of the fossil species which have been referred by.one and another author to this family, in a very summary manner,’ asserting that: “ when a fossil comprises only a fragment, or even a complete wing of an Ephemerid, it is hardly possible to determine the genus, and impossible to assert the species. The utmost that can be learned from such a specimen is the approximate relations of the insect. Neuration by itself is not sufficient to define the species or even the genera of recent Ephemeridae.” While we should not wish to deny the claims of Mr. Eaton to a profound knowledge of the structure of the Ephemeridae, we venture to doubt if he would assert that there are not features in the wing structure of some genera not foand in others, and which are, therefore, in so far characteristic of those genera; and it might be worth while to consider whether a careful study of such differences would not reveal some further differences not discernible upon a cursory examination. One should be slow to hazard sweeping statements of a negative character; and after all, it may be enquired, what more is desired, or at least expected, than “the approximate relations of an insect” found fossil in the older rocks. ‘That is precisely the aim of palaeontology the world over ; and those who discourage efforts to discover these relations are simply bidding us close one of the vol- umes of the book of life, quite as valuable as that they study. In further comments in the same place, Mr. Eaton asserts of the insects of the Devo- nian discussed in this paper, that ‘they have all been regarded as allies of the Ephemer- 1 Trans. Entom. Soc. Lond., 1871, 38-40. toward their authors. In the three pages he devotes to this 2 The manner in which Mr. Eaton has confounded names topic, Dyscritus is twice given as ‘ Dyscritius”; articulatus in this section of his work is pretty fair evidence that he — twice as ‘‘ antiquorum ”; occidentalis once as “ Brownsoni ”’; has not given the papers he quotes that close attention Bronsoni twice as “ Brownsoni’’; Dana twice as ‘ Scud- which would entitle him to use the language of ridicule der’’; Scudder six times as ‘‘ Dawson.” 12 SCUDDER ON THE DEVONIAN idae.” I do not know by whom; certainly not by myself, who first described them. Platephemera he says, may possibly belong to the Ephemeridae, “but there is nothing in the figures to make this certain.” The better figures published with this should be sufficient proof that Platephemera belongs where I originally placed it. The neuration agrees in all essential features with that family, and indeed, considering the antiquity of the creature, shows marvellously little divergence from existing types. And although Mr. Eaton has nothing to say of the wing structure of the Ephem- eridae as a whole, in distinction from that of other neuropterous families, I can hardly believe that any one who has studied it from the standpoint of the substantial unity of wing structure in all insects, could fail to discover that the Ephemeridae have a special development of wing neuration distinct from all others, permitting formulation, and to which Platephemera conforms to so close an extent, that until we have further light by the discovery of more complete remains we are amply justified in considering it as an antique type of Ephemeridae. IV. GEREPHEMERA SIMPLEX. PI. 1, figs. 8, 8a. Gerephemera simplex Scudd., Geol. mag., v, 174-75 (1868). Mentioned without name, as the fourth species, in my letter to Mr. Hartt: On the devonian insects of New Brunswick, p. 1; Bailey, Obs. geol. south. New Br., 140; Amer. journ. sc., (2) xxxrx, 357; Can. nat., (n. s.) 1, 235; Trans. Ent. Soc. Lond., (3) u, 117— all in 1865. In the specimen and reverse as first seen by me, scarcely more could be said of this insect than the brief notice already published ; nothing appeared but a slight fragment of the tip of a wing, and this would not have been dignified by a name had not the extreme interest attaching to fossil insects from the horizon at which it occurred seemed to demand it. The portion preserved was the upper half of the outer border with the extremities of the veins impinging upon it, and two of the principal veins near the tip of the costal margin ; these two veins are as usual in the Ephemeridae and probably represent the mar- ginal and mediastinal (or scapular), and show that the latter reached the border scarcely above the tip of the wing. ° Since my first examination, however, Mr. G. F. Matthew has worked out a considerable part of the wing on one of the stones belonging to the St. John Society, which, though very different in certain parts from what would have been anticipated from the portion first exposed, bears out in a measure the statement that was hazarded concerning it, although it proves that the generic name chosen was unfortunate. In this removal of the stone from the surface of the wing, a fragment of the tip with its two veins was flaked off; but as careful drawings had been taken of it, I have replaced the two lines indicating the veins mentioned above upon the drawing made of the wing as it now appears. This gives us indeed a much better clue to the probable form of the wing than we could possibly otherwise have, for the considerable and constantly increasing diver- gence of the upper and lower veins of the continuous portion of the fragment leave a very strange eflect ; and, without the aid these two vein-tips furnish, leave the form of the apex of the wing decidedly problematical. INSECTS OF NEW BRUNSWICK. 113% The wing is that of a very large insect, the fragment, which reaches neither base nor tip, being 60 mm. long, and rendering it probable that the alar expanse was at least 150 mm. and more probably 175 mm. The apex of the wing was pointed, the costal and outer margin probably meeting at a rounded angle of about 60°. The costal margin must have been very strongly arched near the middle of the apical half, while the apical part of the outer border is nearly straight. The wing was probably elongated, not very broadly expanded in proportion to its length, as I at first presumed from not having counted on such an extended development toward the base. — In the middle of the outer half of the wing the width is about 23 mm., and from the course of the fragments of the two borders it is probable that the width nowhere exceeded 25 mm. or about two-sevenths the length of the wing. The fragment preserved contains considerably less than half the area of the wing comprising most of the central portions. The whole anal area is lost as well as what is apparently most or all of the internomedian area, extending far along the outer margin ; the merest fragment of the costal border, 2-3 mm. long, is preserved, apparently about the middle of the wing; the tip of the wing and outer half of the costal margin are broken away, but a couple of veins at the tip are supplied, as already stated, from a piece that was accidentally removed. This irregular fragment, extending diagonally across the outer half of the wing, with a basal extension along the middle line, is traversed by. principal nervures bound together by a net work of mostly very irregular and very feeble, occasionally more regular and distinct cross veins, forming irregular, mostly longitudinal, unequal, polygonal, rarely quadrangular cells. The veins may be grouped into an upper set of parallel, equidistant and rather approximate, nearly straight, slightly upeurved nervures, three or four in number, traceable only near the middle of the wing; and a lower set of two, traceable throughout the apical half of the wing and extending nearly half way from the middle to the base ; these are parallel, more distant, directed gently downward and so divergent from the other set, and toward the apex curved considerably downward Between the veins of the upper set the cross veins are infrequent and mostly straight, forming quadrangular cells; while in the lower set they are more frequent and very irregular, forming polygonal cells which, toward the apical margin, are very indistinct from the feebleness of the cross veins. The area formed at the apex of the wings by the divergence of the two sets of veins, is filled by branches from the superior surface of the uppermost of the lower set of veins, supporting a mesh of cross-veins. The principal vein of the wing then—the only one which appears unquestionably to support a number of branches —is the uppermost vein of the lower set. And since in all palaeozoic imsects having true net-veined wings, one never has to pass beyond the externomedian vein, in starting from the costal margin, to find the first extensively branched vein, there can be little if any doubt that this should be considered as belong- ing to that vein, and not to a lower one. The only difficulty about this interpretation is that m the middle of the wing, there are above this vein no less than five equidistant and almost equally distinct veins. The first of these, forming the margin, is the marginal vein, and the next is the mediastinal. It is impossible to consider this marginal as the mere thickening of the border, and the vein next removed from the border as the true marginal vein, for both the margin itself would be too broad, and the marginal would 14 SCUDDER ON THE DEVONIAN then be an elevated, and the mediastinal a depressed vein (see fig. 8a), which is never the case in such insects. The nervure at the margin then is certainly the marginal, and that next to itthe mediastinal vein. Only one vein, the scapular, can lie between the med- iastinal and the externomedian, yet between our undoubted mediastinal and our presumed externomedian there are no less than three veins to be disposed of. Two of these lie in the depression following the mediastinal vein, while the third is upon the side or the upper edge of the ascending portion of the area, which on the opposite side of the depression lies at the level or above the level of the mediastinal vein (see fig. 8a). It seems, therefore, highly probable that the two low-lying veins are branches of a scapular vein which probably divides not much further toward the base ; and that the third vein in question is the main externomedian stem, of which the branching vein below is only a principal basal offshoot ; indeed the very fact that the branches of this offshoot are thrown off from its superior surface leads to the presumption that it is itself a branch from a vein above ; for, while an area between two branches of one vein may not very infrequently be filled by superior offshoots from an inferior branch, it would certainly be abnormal for a wide area to be filled by superior offshoots from an upper branch, or even from a main stem itself. Presuming then upon the correctness of these interpretations, the structural basis of the wing is as follows : The marginal vein forms the border. The mediastinal vei is simple, and, running nearly parallel to the marginal vein, probably terminates by impinging upon it not very far from the middle of the outer half of the wing; from it run frequent oblique delicate cross veins to the border. The scapular vein divides into two longitudinal veins before the middle of the wing, probably considerably before it; for even before the middle of the wing, and for as great a distance beyond it as it can be traced, the two branches are exactly parallel to each other and the mediastinal; all the longitudinal interspaces in the middle of this part of the wing are equal ; the forks are connected with each other (and the upper with the medi- astinal?) by ‘olorably frequent faint cross veins at right angles to the nervures ; and in the middle of the wing and beyond it, at least for a short distance, have a gentle upward direction, and even curve very slightly, almost imperceptibly, im the same direction ; beyond however, they must curve strongly in the opposite direction, for the pair of detached veins toward the tip of the wing have a decided downward direction, and these forks, whether the same or not, must in that part of the wing have a similar direction ; probably they are the same, and if so they show that they retain a similar distance apart until they strike the costal margin, one just before or at the tip, the other a little earlier. The externomedian vein must divide into two principal veins near the base of the wing ; the upper branch follows closely the course of the veins above, and lies as far from the near- est as the latter from the next; a little beyond the middle of the wing, however, this space is slightly increased, and an intercalary vein, straight and similar to the others, but fainter, takes its rise from an oblique bent cross vein; all the other cross veins in this interspace and on either side of the intercalary vein, are like the others im the scapular interspaces, and the whole area in which these straight and directly transverse cross veins lie, namely that between the mediastinal and upper externomedian veins, forms a deeply sunken but broad sulcus, the floor of which is nearly flat, and not V-shaped as usual in folds in this INSECTS OF NEW BRUNSWICK. 15 part of the wing; probably it is otherwise further toward the base of the wing before the division of the scapular vein, for the sides of the sulcus are tolerably steep, and where only a simple vein occupied the sulcus, as is ordinarily the case in neuropterous wings, the sulcus would be angular. The lower externomedian branch at the middle of the wing is already as far from the upper branch as that from the upper scapular branch, and continues to diverge from it with a very gentle curve, which increases apically, so that it strikes the border with the same direction as the veins above; in the interspace between these two branches runs a feeble intercalary vein, slightly irregular in direction, sending off cross veins to one side and the other, forming longitudinal irregularly pentago- nal cells; as the interspace widens these become more irregular, until at about two-thirds the distance from the base of the wing to the tip of this branch, a superior offshoot from this branch is emitted, having a course about midway between the two branches, but very soon taking a somewhat zigzag direction, and assuming altogether the appearance of the interealary, to which it sends frequent cross veins ; a short distance further on, or at about the end of the second third of the wing, this emits a second offshoot, rather more prominent and regular than the first, which parts rapidly from the branch, and, remaining near the first, afterwards takes the apical direction of all the veins; it is bound to the upper off shoot by frequent cross veins forming small polygonal cells; between it and the lower externomedian vein is another very feeble intercalary arising from a cross vein, and becoming, like its lateral offshoots, nearly imperceptible toward the outer margin ; as indeed do all the other cross veins and intercalaries, so that they were nearly unobserved _ when the margin alone was exposed, and many of the cross veins fail to compass the interspaces. What can be seen of the internomedian vein is traceable slightly further toward the base of the wing than the preceding, but as the wing is broken here, it is impossible to say whether it is basally divided, and the portion visible is the upper branch, or whether what we see is the whole vein; in the former case the upper branch, in the latter the vein proper, runs sub-parallel to the lower externomedian, very slightly diverging from it, and in the middle of the wing (where it is broken, but where its connections leave no doubt whatever of its course) is as distant from it as the two externomedian branches at the same point; a single, distinct, pretty regularly zigzag intercalary runs midway between it and the lower externomedian branch, connected with tolerable regularity to the veins on either side by alternating, straight, transverse or oblique cross veins, generally forming rather regular, longitudinal, pentagonal cells, which become exceedingly irregular, obscure and broken next the outer margin of the wing; just below the apical offshoot of the lower externomedian branch it throws off an inferior branch, which is nearly straight, and is apically as distant from it as is the next vein above; between these branches is a very irregular intercalary vein, resembling in its connections the apical part of the interealary above. The parts of the wing below this branch are wanting. The relations of this insect to living types is far more obscure than in the case of Plat- ephemera. It has certain resemblances to Platephemera and also to the carboniferous Palaeodictyoptera to which it may possibly belong, but it is certain that the limits of the Kphemeridae, even including Platephemera, are not elastic enough to admit it, and its diver- gence from Dictyoneura and other net-veined insects of early time is so great that. its 16 ; SCUDDER ON THE DEVONIAN reference there would seem to obscure its real isolation. In fact there seems to be not only no family of insects into which it can be placed, but even no sub-order living or extinct, into which it would naturally fall. There is no known insect in which five par- allel and distant nervures follow the course of the costal margin, and of which only two arise from the same root; and so far as my observations have gone, I have found no neu- ropterous insect (to which of living groups this is plainly the most nearly allied), in which the externomedian vein is the first extensively branched vein, and in which at the same time, the upper branch of this vein is simple. In Ephemeridae (to which group one would most naturally compare it from its general appearance), the externomedian vein, as already stated, is always compound, and its upper stem is always forked. In this insect on the contrary, the upper stem is simple (which is the more remarkable from the forked character of the scapular, always simple in Ephemeridae) and the lower forked, its branches being superior and herein differing remarkably from ordinary types. Gerephemera then is not only further removed from modern Ephemeridae than is Plat- ephemera, but can be even less closely affiliated with Platephemera than the latter with modern Ephemeridae. It has, nevertheless, some distinctive points in common with it. Such are its great size and the probable great expanse of the internomedian area, the dif- fering character of the net-work above and below the uppermost externomedian branch, the polygonal nature of the mesh-work caused by the cross-venation (in common with many other old insects), and the somewhat uniform character of that network next to and away from the border. In common with modern Ephemeridae, but in distinction from most other insects, must be mentioned the common feature of intercalary nervures, which here, as in Platephemera, are never free at their origin. As points of special distinction from Platephemera may be mentioned the broad area given to the ves above the externomedian vein, the forking of the scapular vein, its course at the bottom of a deep and broad sulcus, the occurrence of a straight intercalary in the scapular-externomedian interspace, the entire structure of the externomedian vein (differing altogether from Platephemera) and the elongated slender form of the wing, which resembles much more closely Dictyoneura and Haplophlebium. From these latter genera again, to which we should perhaps consider it most closely allied, this insect differs remarkably in the structure not only of the externomedian vein, but in the wide extent of the wings above that vein, and the number of nervures which fill it. It would appear also to differ in the character of the reticulation above the exter- nomedian vein, a matter of less importance, but in which it agrees with Platephemera. The difference in the frame work of the wing, however, is so great and so deep seated, that there can be no doubt of at least its family distinction from all known types. Whether or no it is worthy of being classed as subordinally distinct, I leave to future discussion. But in allusion-to the apparent fact that the peculiar nature of its neuration has not left its mark on modern types, I propose to call the family group in which it should be placed Atocina.! It will be sufficiently distinguished from other ancient types (as from modern) by the forking of the scapular vein, the course of the externo- median, its distant removal from the costal margin, and its peculiar division. This insect and Xenoneura come from the lowest of the Lancaster Shales which furnish insect remains, called plant bed No. 2, by Professor Hartt. . 1 From the Greek a@roxos- INSECTS OF NEW BRUNSWICK. 7 V. Homoruetus Fossiuis. Pl. 1, figs. 1, 2. Homothetus fossilis Scupp., Can. nat. geol., (n. s.) 1, 205, fig. 3 (1867);—JIs., Geol. mag., Iv, 387, pl. 17, fig. 3 (1867); — Is., Daws., Acad. geol., 2d ed. 524—25, fig. 182 (1868); — Is., Amer. nat., 1, 631, pl. 16, fig. 7 (1868);—In., Geol. mag., v, 172, 176 (1868); — Pack., Guide ins., 77-78, pl. 1, fig. 7 (1869). Mentioned without name, as the second species, in my letter to Mr. Hartt: On the devo- nian insects of New Brunswick, p. 1; Bailey, Obs. south. New Br., 140; Amer. journ. sc., (2) xxxix, 357; Can. nat. geol., (n. s.) u, 235; Trans. ent. soc. Lond., (3) m1, 117,— all in 1865. The wing representing this insect is the most complete of the devonian insects, and would leave little to be desired were the base more complete; unfortunately the reverse of this specimen was never found, or it might supply the missing parts. To judge from the strong convexity of the costal margin, it is a front wing. It has the gen- eral appearance of a Sialid of moderate size, and the form of the wing closely corresponds. Although a fragment from the middle of the costal margin, and the whole outer half of the lower margin with the apex are missing, the form of the wing can be estimated with considerable probability. The costal margin is in general strongly convex, but is flat in the middle third, the basal portion rapidly ascending, and the apical as rapidly descending ; the apex was probably rounded, but a little produced, and the hinder border pretty uni- formly and fully rounded, making the middle the broadest part of the wing, where the breadth is probably contained about three times in the length; toward the base the wing narrows rapidly, but at the extreme base more gradually above so as to be almost pedunculate. The marginal vein forms the border. The mediastinal vein is at first inclined slightly downward, then ascends as gently, parting slightly from the marginal, but again in the mid- dle of the wing commences most gradually to approach it, running toward the extremity of the wing in close contact with it, but apparently not joining it until just before the apex and beyond the preserved part of the fossil; throughout it partakes of the course of the margin, but in a less exaggerated form, ascending slightly beyond the basal part, then straight in the middle, gently arcuate apically ; it is connected with the margin, so far as can be made out, by a single straight cross vein somewhat before the middle of the wing. The scapular vein follows a similar course as the mediastinal, always about as far removed from it as it is from the margin, excepting in the apical third; where its distance from the mediastinal is slightly greater, so as to carry its termination, no doubt, exactly to the tip of the wing; no cross veins can be seen to connect this vein with the mediastinal. No other veins can be traced at the extreme base of the wing between the scapular and the lower margin ; but at a short distance (about 2-3 mm.) from the base of the scapular vein, and where its course turns from a descending to a longitudinal direction, a strong trans- verse vein depends from it, directed a very little obliquely outward, and reaching from one- third to one-half way to the lower margin of the wing; and from near and at the lower extremity of this stout transverse vein, other longitudinal veins arise. The uppermost arises from the middle of the lower half of the vein, at a distance from the scapular much greater than the scapular from the costal margin at this point; at first it tends upward, parallel to 18 SCUDDER ON THE DEVONIAN the costal margin, but very soon divides into two main stems. These two stems I take to be: the upper the main scapular branch, of which the transverse vein is the base ; the lower the externomedian vein, amalgamated with the former at the base, the two being com- parable, as will be shown further on, to the same nervures in the Odonata. The connection of the main scapular branch with the veins preserved in the field beyond cannot be directly traced; but from the position of the latter the followmg account must be sub- stantially correct. It runs in a nearly straight course to the middle of the apical half of the wing, where from not following the arcuate course of the main scapular vein it has diverged considerably from it; here its straight course suddenly terminates, but it passes to the same point on the apical margin (just below or at the apex), by a gentle arcuation subparallel to but distant from the main scapular vein, with which it appears to be nowhere connected by cross veins. This main scapular branch emits two basal and several apical inferior offshoots ; the apical offshoots are thrown off at wide angles, at sub- equidistant intervals from the arcuate portion of the main branch, the first at its bend being abruptly and widely forked not far from its origi, the others being simple and the interspaces apparently free from cross veins. The basal offshoots are probably thrown off (their origin is destroyed) at a little distance either side of the end of the basal third of the wing; and, unlike the apical offshoots, certainly diverge at a very slight angle, and are each similarly forked ; the first from the base is forked near its origin, and its upper fork is again divided narrowly about half way to the margin, the general course of all the near- vules of this basal offshoot being broadly arcuate. The other and outer basal offshoot soon runs parallel to the main scapular branch, and is connected with it by a straight oblique cross vein in the middle of the wing, where it forks; a short distance further on a piece is broken from the middle of the wing, and the part beyond is displaced a little with refer- ence to it, and apparently folded a little so as to obscure the exact course of these forks ; which seem to become involved with the fork of the first of the apical offshoots, with which, as well as with each other, they are connected by weak, inequidistant, straight, direct or oblique cross veins. The externomedian vein can be traced in all its parts, excepting an insignificant portion of the tip of the outer of its branches; the main stem takes an arcuate course, parallel to the basal offshoot of the main scapular branch, and terminates on the lower margin just beyond the middle of the wing; half way from the transverse basal vein to the margin it throws off an inferior branch, which soon becomes parallel to it (and where it becomes so is connected by a cross vein to the vein below) and, by an interpolated vei, which appears as a baseward continuation of this inferior branch, to a bent cross vein in the same interspace, just beyond the middle of the basal half of the wing; this cross vein is bent on the externomedian side of the interspace. The inter- nomedian vein is compound, being broken at the lower extremity of the transverse basal vein (before which it is not seen) into two compound branches, each throwing off a couple of inferior curved offshoots to the margin, which are connected together by two sets of cross veins,— one belonging only to the nervures of the upper branch, and in continuation of the direct cross nervure in the externo-internomedian interspace ; the other set cover- ing both branches and broken, each succeeding vein being carried successively further in, the general course of the whole series being across the middle of the internomedian INSECTS OF NEW BRUNSWICK. 19 area, sub-parallel to the outer series; one or two of the nervules in this area are briefly forked next to the border. The anal veins cannot be seen. The length of the fragment is 40 mm.; the probable length of the wing 42 mm.; its breadth at the middle is 14 mm., reduced at base to 4 mm. The most important vein in this wing is the scapular, whose branches occupy about half the outer margin; the externomedian is comparatively unimportant, the imterno- median occupying a larger area. The more striking features of the wing besides this are : the origination of the principal scapular branch (from which all the scapular nervules arise) and the externomedian vein from a common stem, having its source in a transverse basal nervule; and the meagreness of the transverse neuration, which in no place shows any sign of reticulation. The point first mentioned finds no parallel among insects excep- ting in the Odonata, where it is almost precisely similar. There, as I attempted to show many years ago in treating of the structure of the wings of recent and of fossil Neurop- tera, the transverse vein termed the arculus in modern nomenclature should be considered as made up of two veins meeting each other; for the upper of the two longi- tudinal nervures which always originate from it belongs to the scapular vein, while the lower belongs to the externomedian. Here, these two veins appear, at least, to be amal- gamated at the base, but it is not impossible, and would indeed seem a@ priori more prob- able, that they run side by side by side to the arculus, and are merely connate in appear- ance from the preservation of the fossil. However, this may be, it would seem as if we had in this peculiar structure the presence of an arculus as a forerunner at this early day of the specialized type of Odonata; the main scapular branch arising from the arculus is here, as in all normal modern Odonata, the principal vein of the wing,’ from which most of the subsidiary branches arise; in these two points this fossil wing is distinctively and decidedly Odonate in character; but if one looks further, one fails to find expected fea- tures, now, and even in jurassic time, invariably corellated with those mentioned ; espec- ially is a nodus to be sought in vain; the marginal vein runs without break to the tip of the wing; for, although it cannot be followed from want of its perfect preservation, all the neighboring veins can, and the number is similar throughout. So too the fine mesh- work of Odonate wings is not only absent, but what cross neuration exists is confined to a dozen or so straight veins for the whole wing. If, however, we consider this uppermost offshoot from the arculus as the main branch of the scapular, and simply imagine the arculus-structure removed, so as to bring this main branch directly and plainly dependant from the scapular vein, one cannot fail to see how close the entire structure would be to what we find in the Sialina. In the latter group indeed, there is no such separation of apical and basal offshoots to the main scapular branch as here, but all the scapular nervules take their rise, not from the vein itself, but as here from a principal scapular branch, arising far back on the scapular vein; the general relations of the different areas of the wing are also much the same in both, while the cross venation is very similar. Here as there, the internomedian vein and its branches are of more impor- tance —cover a wider area and bifurcate far more —than either the externomedian vein on the one side, or the anal on the other. We have here, therefore, as I pointed out 1 Jt is termed vena principalis in the modern nomenclature not arise in the same way as in other Odonata, but has trans- of students of Odonata. In some Calopterygidae it does ferred its origin to the scapular (median) itself. 20 SCUDDER ON THE DEVONIAN when first calling attention to this fossil, the distinctive features of two tolerably well sep- arated groups combined in one individual: certain features of the wing are distinctively Sialid in character; others occur nowhere but in the Odonata. Yet these two groups belong, one to the Neuroptera proper, the other to the Pseudoneuroptera, and we find here the earliest proof of their common origin, in a wing whose type is more distinctly synthetic than any other known. It seems also to bring new and unanticipated evi- dence in support of my view of the homologies of the vein arising from the arculus in Odonata. It is plainly impossible for us to place this insect in any known family of Neuroptera. It must be considered the first known member of a family, forming the connecting link between the Neuroptera proper and Pseudoneuroptera, and will be evidence, in so far as it goes, of a closer connection between these two groups, than between the latter and Or- thoptera. For this family I would propose the name of Homothetidae, and would char- acterize it as a family of Neuroptera (sensu /atior7), allied to Sialina, but in which the prin- cipal scapular branch, instead of originating as in Sialina directly from the main stem, usually near the middle of the wing, arises in common with or close beside the externo- median vein, from an arculus near the base of the wing, connecting the scapular and inter- nomedian veins; and in which, further, the basal and apical offshoots from this main scapular stem are diflerentiated, instead of exhibiting a similar and uniform character. This insect was found in plant bed No. 8, of Professor Hartt’s section, the highest in the series as developed at the Lancaster locality. VI. Dyscritus vetustus. Pl. 1, fig. 4. Dyscritus vetustus Scupp., Geol. mag., v, 172, 176 (1868). Mentioned without name, as probably identical with one of the other species, in my letter to Professor Hartt: On the devonian insects of New Brunswick, p. 1; Bailey, Obs. geol. south. New Br., 140; Amer. journ. sc., (2) xxxix, 357; Can. nat. geol., (n. s.) 1, 234; Trans. ent soc. Lond., (8) 1, 117 —all in 1865. The insect briefly mentioned hitherto under this name has not before been figured, and is the least important of the devonian wings. It consists of only a small fragment of a wing, which shows a bit of the lower margin with three or four curved veins running toward it, and connected rather uniformly with one another by cross veins forming quadrate cells. It is plainly distinct from all the others, for the equivalent region in no case is similarly broken. In Lithentomum Harttii the corresponding region is indeed not preserved, but the cross veins in the neighboring parts, although weak, straight and direct as here, are so very infrequent and irregular that we cannot presume the parts which are wanting below them to be very different. The veins preserved are four in number. The uppermost has two inferior branches at short distances, of which only the extreme base of the outer is preserved, while the inner is traceable throughout its extent; it parts from the main vein, which in the brief portion preserved runs nearly parallel to the lower margin, at an ordinary angle and passes in a regular arcuate downward course to the margin. The three veins below this take a course sub-parallel to this, and are sub-equidistant ; the upper, at the base of the INSECTS OF NEW BRUNSWICK. 21 part preserved, is a little nearer to the vein above, and to its first branch, than to the vein below, and may possibly, not improbably, be a branch of the first vein mentioned, parting from it further toward the base than the fracture of the specimen allows us to see; the two veins below it seem to belong together; the bit of margin preserved, covering only two interspaces, is slightly convex. The cross veins are weak, but tolerably uniform, and either direct or slightly oblique, or occasionally a little irregular; they are nearly equidistant as a general rule, but more frequent in the outer of the two interspaces touch- ing the margin than elsewhere. The length of the fragment is 15 mm. The fragment then consists of some curved veins striking the lower margin of a wing, one at least of which is one of two or more inferior and, so far as can be seen, simple branches of a principal longitudinal vein, whose course would make it terminate either at the very tip of the wing, or, if it afterwards curved considerably, very near the extremity of the lower margin. This principal vein probably belongs either to the scapular or exter- nomedian, while the lower curved veins appear like branches of the internomedian vein. The wing cannot therefore be referred to the vicinity of either Platephemera or Gereph- emera, both on account of the relations to each other of the veins, and of the nature of the reticulation, the latter being certainly polygonal in this region in both these genera ; while the irregular course of the veins themselves in Platephemera and their considerable apical divarication in Gerephemera constitute peculiarities not observed in the simple frag- ment under discussion. So far as the course of the veins is concerned it can be much better, and indeed very well, compared to Dictyoneura and its allies; but in all these insects the interspaces are filled with a minute polygonal reticulation (wherever it is preserved), which is such a characteristic feature that Dyscritus can by no possibility be considered as very closely allied to them. The neuration is altogether different in Xenoneura, finding nothing at all comparable in this region. The longitudinality of the veins throughout Lithentomum seems to forbid any close comparison with it. But in Homothetus we do find some points in common with Dyscritus ; for while the reticulation is much more sparse in the former, there is a certain regularity about it similar to what we have in the latter, while the curving of the internomedian veins and their parallelism certainly resemble in a general way the same features in Dyscritus. And if we presume the fragment of Dyscritus to be broken from near the middle of the wing, we may see a not distant resemblance between the longitudinal vein of Dyscritus and its two visibly connected branches, and the main branch of the scap- ular vein in Homothetus ; while the upper, independent, curved vein of Dyscritus may be taken perhaps for the externomedian vein, and the other two nervules for branches of the internomedian vein. The resemblance is at least sufficient to make us believe we have here a clue to its relationship ; while at the same time it differs so much from it that we cannot associate the two even generically ; for if they are to be compared in this way at all, the lower stem of the main scapular branch, as seen in Homothetus, must either have become single and simple in Dyscritus, or it must have assumed the longitudinality and mode of bifurcation of the upper stem. There is nothing, however, in the fragment to show what the connection of the main scapular branch may have been, and consequently nothing to prevent the reference of this wing to the Sialina, where the relations of the veins would be the same. Judging 22 SCUDDER ON THE DEVONIAN by comparison of what we have presumed to be similar parts, we may suppose this wing to have been slightly larger than that of Homothetus fossilis, and its probable length not far from 50 mm. Whatever views are held of the special homologies of the veins, its right to generic dis- tinction from Homothetus, to which it is most closely allied, must be conceded on the ground of the greater simplicity of the neuration. On account of the insignificance of the fragment, however, and the consequent impos- sibility of any sure clue to its affinities, it would not have been worth while to confer upon this wing a distinctive generic name, even granting its generic dissociation from all others, were it not for the extreme interest attaching to any insect fragment of such high antiquity. The remains were found in plant bed No. 8, of Professor Hartt, the highest in the Lan- caster series. VIL Lirsenromum Hartt. Pi. 1, fig: 3. I Geol. mag., 1v, 387, pl. 17, fig. 4 (1867); Is., Daws., Acad. geol., 2d ed., 525, fig. 183 (1868) ; — Is., Amer. nat., 1, 630, pl. 16, fig. 6 [artii] (1868); — Is., Geol. mag. v, 172, 176 (1868); — Pacx., Guide ins., 77, 78, pl. 1, fig. 5 (1869). Mentioned without name, as the third species, in my letter to Professor Hartt: On the devonian insects of New Brunswick, p. 1; Bailey, Obs. geol. south. New Br., 140; Amer. journ. sc., (2) xxxix, 357; Can. nat. geol., (n.s.) mu, 235; Trans. ent. soc. Lond., (3) nm, 117 — all in 1865. The relic to which this name has been given is the central upper portion of a wing in a very fragmentary condition, but with a bit of the upper margin sufficient to enable one to determine pretty positively the homologies of the vems. A fragment of Calamites has unfortunately covered the base and lower part of the wing, but one or two of the veins appear through it at what must be the very base of the wing, and help to determine its nature. The fragment preserved is 36 mm. long, and 15.5 mm. broad; but the wing was probably 55 mm. long, and perhaps 20 mm. broad, if one may judge from its general appearance only ; it certainly represents a large insect. The marginal vein forms the border. The mediastinal vein in the basal half of the wing, and probably for some distance beyond, runs parallel to and at considerable dis- tance from the border, with which it is connected by very weak oblique cross veins at irregular intervals, which toward the base are considerably more oblique than further outward; this weak construction of the costal margin renders it probable that the wing was a hind one. The scapular vein in the basal quarter of the wing runs in very close proximity to the mediastinal, then parts from it a little, and continues sub-parallel to it, but a little nearer to it than the latter to the border; there appear to be no cross nervules between these veins, but a slight and irregular tortuous longitudinal line like amere puckering of the membrane; at some distance before the middle of the wing this vein puts forth at a slight angle an inferior branch, which takes an arcuate course sub-parallel to the vein, and is forked about as far beyond the middle of the wing, apparently, as it arose anterior to it, both offshoots taking a longitudinal direction. Lithentomum Harttii Scupp., Can. nat. geol., (n. s.) u1., 206, fig. 4 (1867); — Ib., INSECTS OF NEW BRUNSWICK. 23 _ The externomedian vein next the base of the wing is somewhat distant from the scap- ular, is afterwards still further removed from it, and, in the middle half or more of the wing, has a somewhat irregular, sinuous, longitudinal course, sub-parallel to the scapular vein ; just before the end of the basal quarter it appears to have a straight ob- lique inferior branch widely divergent from it; this is the vem next the lower margin of the fragment; by its course it would appear to be a branch of the externomedian, but it is not impossible that ‘it may be the internomedian vein ; whichever it is, it forks in the middle of the second quarter of the wing, each fork being straight, simple and slightly divergent. From the point where this inferior branch appears to be thrown off from the externomedian vein, a superior branch appears also to be emitted ; it scarcely parts from the vein and runs only a short distance along the interspace in a nearly straight line and then dies out. Beyond this the externomedian vein throws off two, so far as can be seen simple, branches, which are nearly straight, obliquely longitudinal, and part from the vein, one at the middle of the wing, the other a short distance before it or just below the branch of the scapular vein. The interspaces thus formed below the scapular vein are very unequal and variable in breadth, giving the neuration a feeble uncertain appearance, which is heightened by the irregular distribution of the cross veins, which, although nearly always straight and transverse, sometimes bridge the narrowest, sometimes the broadest parts of the interspaces ; they are exceedingly feeble and infrequent, the largest number being found in the interspace between the scapular and externomedian veins, although they may have been present in some of the areas where they cannot now be seen. We shall seek in vain to accommodate this wing in any of the modern families of Neuroptera. There are none excepting the Ephemeridae, the Embidae and perhaps the Raphidiidae, in which the externomedian vein has such a preponderating importance, and in none of these do the scapular or externomedian veins have a structure at all similar. The structure of the scapular vein is somewhat similar to what we find in the Sialina, but is widely different from it in the paucity of the offshoots of the scapular branch, in which this wing is comparable to Xenoneura only. The structure of the externomedian vein is also distantly similar to that of the Sialina, but in this family, in modern times at least, the number of principal branches is always fewer, they never assume such a longitudinal course, and never cover so great an area. We must, therefore, separate this group from all known families, as one having its nearest affinities to Sialina in modern times, and perchance to Xenoneuridae in the ancient ; and, considering it as in some sense a precursor of the Sialina, may call it Cronicosialina.’ It should be looked upon as a family of Neuroptera proper, of feeble neuration, in which the scapular vein emits a main branch near the middle of the wing, which, running nearly parallel to the main vein, emits one or at most two subsidiary, also longitudinal, simple offshoots. The externomedian vein, tolerably distant from the former throughout, terminates near the tip of the wing, emitting two or three branches at very unequal distances apart, all of them longitudinal and all but the basal simple; the irregular interspaces thus formed are crossed at very unequal distances by very feeble but straight cross veins. The lower veins are unknown. This specimen is the most obscure of all the devonian insects and would have been overlooked by any less keen-sighted observer than the late Professor C. F. Hartt. 1 Kpoytxds, old fashioned. 24 SCUDDER ON THE DEVONIAN Very few persons seeing it would recognize it as an insect, yet it was the first insect found by him which he recognized as such. It is on this account that I have selected this of all the devonian wings to commemorate his discovery. It comes from plant-bed No. 8, the highest in the series. VIII. XeEnonEvURA ANTIQUORUM. PI. 1, figs. 5, 6, 7. Xenoneura antiquorum Scupp., Can. nat. geol., (n. s.) m1, 206, fig. 5 (1867);—Ib., Geol. mag., tv, 387-88, pl. 17, fig. 5 (1867) ;—Is., Daws., Acad. geol., 2d ed., 525-26, fig. 184 (1868);—Is., Amer. nat., 0, 163, fig. 1 (1868);—Is., Geol. mag., v, 174, 176 (1868). Mentioned without name, as the fifth species, in my letter to Professor Hartt: On the devonian insects of New Brunswick, p. 1; Bailey, Obs. geol. south. New Br., 140; Amer. journ. sc., (2) xxxIx, 357; Can. nat. geol., (un. s.) 1, 235; Trans. ent. soc. Lond., (3) m1, 117,—all in 1865; see also Amer. journ. se., (2) xi, 271. This fossil is represented by a fractured basal fragment of a wing, probably including a little more than half of it. It is the smallest of the devonian insects, the wing having probably measured only a little more than 18 mm. in length. It was long and slender, broadest near the middle, and probably tapered to a rounded but somewhat produced extremity, as in certain species of Dictyoneura. The costal border in the preserved por- tion (probably a little more than half of the whole) is gently convex; probably beyond the middle it is straight nearly to the tip, as represented on the plate; the portions of the lower margin preserved indicate that this was more strongly arcuate but not full next the base ; the direction of the margins and the course of the distant veins indicate, as stated, a tapering tip, which was probably rounded, and in no way angular. The marginal vein forms the border. The mediastinal vein is simple and gently arcu- ate; at first it curves gently in the opposite sense to the margin, from which it is some- what distant, and with which it is connected by faint, nearly transverse, or, away from the base, gently oblique cross veins, not very closely approximated. At the beginning of the second quarter of the wing, it is about as distant from the scapular vein as from the mar- gin, and thereafter runs nearly parallel with the latter, but with a slightly stronger curve, to a little past the middle of the wing; where it suddenly terminates in a cross vein bent at a right angle, the upper half a little the longer, by which it is connected with the veins on either side of it; a somewhat similar termination of this vein is shown in Goldenberg’s figure of Dictyoneura libelluloides. The scapular vein is one of the most important in the wing. In the part of the wing preserved it is very straight. Next to the base it is in exceedingly close proximity to the mediastinal, diverging gently from it by the curve of the latter at about the end of the basal fifth of the fragment, until it is as distant from the mediastinal as the mediastinal is from the margin, and again gradually approaches it; it is about equidistant from the bor- der at the end of the fragment, and where the mediastinal diverges from it; beyond the tip of the mediastinal, it probably continues its straight course at first, or even trends slightly upward to take the place of the mediastinal vein, until it is in close proximity to the border, and then follows nearly the curve of the latter, gradually approaching it until INSECTS OF NEW BRUNSWICK. 25 near the tip; but the track of the vein beyond the tip of the mediastinal is of course conjectural. At a little beyond the end of the first third of the wing, it emits at a considerable angle an inferior branch, which, at about half way from its base to the tip of the mediastinal, or at just about the middle of the wing, begins to curve, so as to assume a direction parallel to the main vein, and at the same time forks; this whole branch is very faint, and is almost effaced at the fork next which the wing is fractured. To judge from the course of the other veins, one and only one of the offshoots of that branch is again simply forked; which, it would be impossible to say; but the upper offshoot (with its upper fork, if it divides) most probably runs sub-parallel to, and at considerable distance from, the main scapular vein, very gradually approaching it, especially apically where it curves downward, until it terminates, probably at the very apex of the wing. The sketch in fig. 5, however, represents the lower branch as forked, at a little past its middle ; there can be little doubt that the branches impinge upon the margin at about the distance apart that is indicated, or at a little less distance apart than the branches are seen to abut on the fragment of the lower margin which is preserved. The only question is concerning the basal attachment of the vein which strikes the border the second below the scapular vein itself ; if not attached as represented in the plate, it originates from the branch of the scapular vein at probably a little less than half the distance between its first forking and the apex. The vein lying next below this, and which appears on the plate (fig. 5) to have a double attachment to the scapular vein, seems to be the externomedian vein. That its basal half, like that of the preserved portion of the scapular branch, is very faintly indicated on the stone seems due to some accident of preservation, for its apical branching part is distinct. It appears to originate from the scapular vein at a little more than half way from the base of the wing to the origin of the scapular branch ; its basal portion must therefore be either connate with the scapular vein, or be so closely connected with it by the accidents of preservation as to be inseparable from it. It diverges from the scapular at the same angle as the scapular branch, is very soon connected with the adjacent vein below by a short cross nervule of unusual distinctness, bends outward a little beyond this cross nervule, and at an equal distance beyond is again bent to its former course; here it is connected to the scapular vein by a faint oblique cross vein, which is almost exactly continuous with the subsequent part of the externomedian, and reaches the scapular vein directly above the distinct cross vein above mentioned ; thus giving the mediastinal vein the appearance of having a double base, and enclosing between its basal attachments an elongated subrhomboidal cell. Beyond these basal divisions the vein runs in a straight oblique course to just before the centre of the wing, where it forks widely, the upper branch being simple and excepting for a gentle arcuation at its base nearly straight and a little more longitudinal than the main stem; the lower branch nearly continues the direction of the main stem, and at a little less than half way to the margin forks, again widely, but symmetrically, the offshoot being simple, the upper again forked half way to the margin, the final upper fork being nearly horizontal and striking the border in the middle of the apical half of the wing. 26 SCUDDER ON THE DEVONIAN The internomedian vein seems to be represented by two widely separated simple veins, the course of which, so far as they can be traced, would seem to indicate that they have a common origin very near or at the base of the wing, directly below the common stem of the scapular and externomedian veins. The upper branch first comes into view directly beneath this stem, running parallel to it, and not very far away from it, but at double the distance from it that the mediastinal vein is at this point, which is before the end of the basal quarter of the wing; when the mediastinal vein curves upward from the scapular, this curves downward in about the same degree, until it reaches the distinct short cross vein which unites it, as before stated, to the externomedian vein; here it bends downward, becomes more distinct than any of the nervules between it and the main scapular vein (previously it had been rather inconspicuous), and runs in a nearly direct faintly arcuate course to the middle of the lower margin of the wing, gently diverging throughout from o> 5 the externomedian vein and its nearer branches. The lower branch is first seen in the very centre of the basal third of the wing, from which point it passes in a nearly straight course almost parallel to the distincter portion of the other branch, and is as heavily marked. The anal vein is perhaps simple, running at first downward and curving outward, subparallel to but distant from the lower basal margin, becoming just before the middle of its regular course straight and distinct, when it diverges slightly from the border of the wing, and inclines distinctly although not greatly toward the lower internomedian branch, con- tinuing in this course until it reaches a distinct oblique cross vein which unites it to the latter in the middle of the basal half of the wing; here it bends abruptly downward at right angles to the cross vein, and runs doubtless into the margin; the cross vein is nearly transverse to the interspace in which it lies, and is about parallel to, and is of the same length as, the upper limb of the bent cross vein in which the mediastinal vein terminates. Next the basal margin of the wing is a brief simple shoot directed almost vertically downward, which may be an inferior basal branch of the anal vem. The other lines between the internomedian veins and the margin, seen in fig. 5, represent merely fractures in the stone. Besides the three distinct cross veins mentioned,—(1) that in which the mediastinal vein terminates, (2) that between the upper internomedian branch and the externomedian vein; and (3) that connecting the lower mternomedian branch and the anal vein — and the weak cross veins visible in the interspace above the mediastinal vein (of which only those in the basal half are represented in fig. 5), there are in various parts of the wing exceedingly indistinct, very weak, very closely approximated, but unequally distant cross veins, transverse or nearly transverse to the interspaces, sometimes curved but never showing any tendency to unite so as to form any kind of reticulation ; it is probable that they exist throughout the wing, or at least below the main scapular vein; they are most distinct in the externomedian interspaces, and in those on either side of the internomedian branches, especially next the nervules themselves, as may be seen in fig. 5 on either side of the lower internomedian branch, where they are more distinct than in any other part of the wing; this mode of fracturing the interspaces, rather than reticulation, is the more marked from the exceedingly open and distant neuration. -INSECTS OF NEW BRUNSWICK. 27 = Besides these normal features of neuration there are some other characteristics in this wing, purposely left for description to the end. These are some peculiar marks near the base of the wing, originally described by me as “ apparently independent veinlets, forming portions of concentric rings.” These ridged rings overlie the probable position, as here described, of the basal part of the lower internomedian branch, and lie just beneath the initial divergence of the mediastinal and scapular veins; they consist of an alternate series of broken concentric grooves and furrows, some faint, others in places very distinct, extending over nearly half the width of the wing at this point, i. e., almost reaching the upper branch of the internomedian vein on the one hand and the anal vein on the other; the most distinct are three short, shallow furrows, with very rounded low ridges between them upon the upper side, next the upper branch of the internomedian vein; the outer of these is distant from the extreme mark upon the opposite side about 2.2 mm.; the central region, rather less than a milli- meter in diameter, presents a slightly elevated, irregular, granulated surface, like many of the rougher parts of the stone outside the wing, and has no peculiar structure ; the whole lies directly upon what would be the continuation of the lower branch of the interno- median vein were it present, and apparently obliterates it; one of the outermost grooves, an extremely faint and delicate one, crosses the anal vein at a very sharp angle. This peculiar feature in the wing I formerly compared to the stridulating apparatus of the Locustariae, and suggested that this insect thereby united characteristics now found only separated, some in Neuroptera and some in Orthoptera. Several naturalists, e. g., Darwin, Dawson, and Packard, followmg my suggestion, have used this as a striking illustration of synthetic character in early types of animals, and have pictured this as the earliest example of stridulation. I am now obliged to confess that I have led them altogether astray; this peculiarity, although bearing a strong superficial resemblance to the stridulating organs in Locustariae, having, I believe, nothing whatever to do with the wing itself. The stridulating apparatus of Or- thoptera, whenever it concerns the wings, is invariably based on a modification of existing veins; in its simplest forms it is the mere thickening of certain nervules, and furnishing them with a sharp or rough edge. In the original appearance of a stridulating organ in insects, we should look for some such simple form as the initial stage. But in this fossil wing we find nothing of the sort; no one of the concentric lmes or grooves are continuous with any of the neighboring veins. The only appearances which favor such a view are: (1) the openness of the neuration at this point, which allows this great scar to lie at the base of the wing without disturbing more than one of the veins; (2) the curve of the anal vein, which has the appearance of passing around this obstruction ; but the course of which is in keeping with the curve of the lower margin of the wing, equally explaining it; and (3) the curve of the cross veins in the neighborhood of the scar, as seen on either side of the lower internomedian branch in fig. 5; which veins, however, when narrowly examined, are seen to form angles with the more prominent concentric grooves and ridges. These ridges, too, are not of a form suitable for the production of sound, the depressions or elevations being extremely smooth and gradual; they are also of very unequal size and thickness ; they do not occur in the anal area, as in all Locustariae, but in the internomedian ; 28 SCUDDER ON THE DEVONIAN and they have just sufficient regularity to render it most probable that the central, irrecular, rough, and slightly elevated mass is either the relic of a foreign substance, which has fallen upon the wing, subsequent pressure upon which, when the membrane of the wing formed, so to speak, a part of the floor upon which it lay, has caused the mud and membrane together to assume the present appearance; or, that we chance here to have stumbled on a wing which, in the nymph condition, has met with some accident, producing in the imago a blister-like distortion, such as those figured by Mocquerys, as suggested to me by Dr. Hagen, in the elytra of Carabus monilis, Mesonphalia gibba, Timarcha rugosa, and as must have been observed in the veined wings of insects of the other orders by all entomologists. This last supposition would better account for the greater prominences of the peculiar markings around one part of the scar than elsewhere, and for the apparent partial conformity of the cross venation to the contour of the scar. Whichever way it be considered, it does not now appear to me reasonable to maintain my former hypothesis of a stridulating organ, to which nevertheless there is, as stated, a remarkable general resemblance. That such a stridulating organ would be a great anomaly no one can question, and the proposition should not be maintained in the face of the objections which careful and prolonged study and comparison elicit. But putting aside its extraneous features, we may discuss the affinities of this insect on the basis of the unquestionable characteristics of its neuration, and shall find in these enough to excite our interest and even to perplex us. In its general features the wing is plainly neuropterous. It would appear from the strength of the margin to be an upper wing, and in its form to resemble that of many true Neuroptera; its sweeping forking branches with direct transverse cross venation attest the same proposition, but when we come to compare it with known types, we shall find it extremely difficult to place it. Its very open neuration is one general feature which is peculiar; the presence of two or three very prominent cross veins, with an extreme multitude of feeble cross veins never breaking up into an irregular reticulation, is certainly strange ; so is the termination of the mediastinal vein, and still more the entire simplicity and extreme separation of the internomedian veins, occupying so large an area of the wing without a fork, and connected in so unusual a manner with the veins on either side; the apparent absolute amalgamation of the bases of the scapular and externomedian veins in such early insects is very unexpected ;—and all combine to form an ensemble which is the odder for the general simplicity of the neuration. It would be hard to say which is the most prominent vein in the wing; the scapular, externomedian and internomedian occupy about equal areas, and while the two former branch more than the latter, their nervules are compar- atively much feebler. In the openness and sparseness of the neuration and in the paucity (but not at all in the position) of the principal cross veins, it bears a certain resemblance to the Coniopterygidae and to no other neuropterous family; but the differences are far greater and more important than the resemblances and scarcely need be stated. There are also some features which give it a sialidan appearance; if we suppose, as we may, that the second nervule reaching the margin below the main scapular vein arises from the main scapular branch, we shall have a condition of the scapular vein very like that of the Sialina, excepting in the slight number of offshoots from its branch, which would be very abnormal; in the near or actual amalgamation of the externomedian INSECTS OF NEW BRUNSWICK. 29 with the scapular vein, there is also nothing to separate it from the Sialina, excepting their amalgamation for so great a distance; but the structure of all the other veins and the peculiarities of the cross venation is very different from the same points in the Sialina. In the course of most of the main veins and their mode of branching, it has some resemblance to the Raphidiidae, but it has no affinity whatever with that group in the peculiar directions of the nervules and their connection by distant cross veins, so as to form large polygonal cells, which is one of the most striking of the characteristic features of Raphidiidae. The apical two-thirds of the wing (excluding, therefore, the attachments of most of the veins) are in sufficient harmony with these parts in the carboniferous Dictyoneurae to presume, at first, that the wing will fall in the ancient order of Palaeodictyoptera. As yet, however, we know too little of the extent and even of the peculiar characteristics of this group to say whether or not the structure of the base of the wing will allow its location here ; certainly it will not admit its being placed in the same family with the genus Dictyo- neura; and at present this is, perhaps, all that we can say until the structure of all the ancient wings shall have been most carefully studied. It is in large measure in those points of structure which Dictyoneura shares with the Ephemeridae, that Xenoneura is comparable to the former, and we therefore see in this wing ephemeridan, sialidan, raphidian and coniopterygidan features, combined with others peculiar to itself. Whatever the closest affinities of the wing may prove to be, it must certainly, by its combination of characters, bridge over the gulf now separating the wing features of Neuroptera and Pseudoneuroptera ; and these various considerations assure us of its family distinction from any known ancient or modern type of Neuroptera, and of the propriety of applying to the group it represents the family name of Xenoneuridae. This species, with Gerephemera simplex, came from the lowest insect-producing beds of the Lancaster Shales, called plant bed No. 2, by Professor Hartt. IX. GENERAL SUMMARY. It only remains to sum up the results of this re-examination of the devonian insects, and especially to discuss their relation to later or now existing types. This may best be done by a separate consideration of the following points: 5 1. There is nothing in the structure of these earliest known insects to interfere with a former conclusion ! that the general type of wing structure has remained unaltered from the earliest times. Three of these six insects (Gerephemera, Homothetus and Xenoneura) have been shown to possess a very peculiar neuration, dissimilar from both carboniferous and modern types. As will also be shown under the tenth head, the dissimilarity of structure of all the devonian insects is much greater than would be anticipated; yet all the features of neuration can be brought into perfect harmony with the system laid down by Heer. 2. These earliest insects were hexapods, and as far as the record goes preceded in time both arachnids and myriapods. This is shown only by the wings, which in all known insects belong only to hexapods, and in the nature of things prove the earlier apparition of that group. This, however, is so improbable on any hypothesis, that we must conclude the record to be defective. 1The early types of insects. Mem. Bost. Soc. Nat. Hist., III, 21. 30 SCUDDER ON THE DEVONIAN 3. They were all lower Heterometabola. As wings are the only parts preserved, we cannot tell from the remains themselves whether they belong to sucking or to biting insects; for, as was shown in the essay already referred to, this pomt must be considered undetermined concerning many of the oldest insects until more complete remains are discovered. | They are all allied or belong to the Neuroptera, using the word in its widest sense. At least two of the genera (Platephemera and Gerephemera) must be considered as having a closer relationship to Pseudoneuroptera than to Neuroptera proper, and as having indeed no special affinity to the true Neuroptera other than is found in Palaeodictyoptera. wo others (Lithentomum and Xenoneura), on the contrary, are plainly more nearly related to the true Neuroptera than to the Pseudoneuroptera, and also show no special affinity to true Neuroptera other than is found in Palaeodictyoptera. A fifth (Homothetus), which has comparatively little in common with the Palaeodictyoptera, is perhaps more nearly related to the true Neuroptera than to the Pseudoneuroptera, although its pseudo- neuropterous characters are of a striking nature. Of the sixth (Dyscritus) the remains are far too imperfect to judge clearly, but the choice lies rather with the Pseudoneuroptera or with Homothetus. The devonian insects are then about equally divided in structural features between Neuroptera proper and Pseudoneuroptera, and none exhibit any special orthopterous, hemipterous or coleopterous characteristics. 4. Nearly all are synthetic types of a comparatively narrow range. This has been stated in substance in the preceding paragraph, but may receive additional illustration here. Thus Platephemera may be looked upon as an ephemerid with an odonate retic- ulation; Homothetus might be designated as a sialid with an odonate structure of the main branch of the scapular vein; and under each of the species will be found detailed accounts of any combination of characters which it possesses. 5. Nearly all bear marks of affinity to the carboniferous Palaeodictyoptera, either in the reticulated surface of the wing, its longitudinal neuration, or both. But besides this there are some, such as Gerephemera and Xenoneura, in which the resemblance is marked. Most of the species, however, even including the two mentioned, show palaeodictyopteran characters only on what might be called the neuropterous side; and their divergence from the carboniferous Palaeodictyoptera is so great that they can scarcely be placed directly with the mass of palaecozoic insects, where we find a very common type of wing structure, into which the neuration of devonian insects only partially fits. For: 6. On the other hand, they are often of more and not less complicated structure than most Palaeodictyoptera. This is true of the three genera mentioned above with peculiar neuration, but not necessarily of the others, and it especially true when they are com- pared with the genus Dictyoneura and its immediate allies. There are other Palaeodicty- optera in the carboniferous period with more complicated neuration than Dictyoneura, but these three devonian insects apparently surpass them, as well as very nearly all other carboniferous insects. Furthermore : 7. With the exception of the general statement under the fifth head, they bear little special relation to carboniferous forms, having a distinct facies of their own. This is very striking ; it would certainly not be possible to collect six wings in one locality in the carboniferous rocks, which would not prove, by their affinity with those already INSECTS OF NEW BRUNSWICK. 51 known, the carboniferous age of the deposit. Yet we find in this devonian locality not a single one of the Palaeoblattariae or anything resembling them; and more than half the known insects of the carboniferous period belong to that type. The next most prevailing carboniferous type is Dictyoneura and its near allies, with their reticulated wings. Gerephemera only, of all the devonian insects, shows any real and close affinity with them; and even here the details of the wing structure, as shown above, are very different. The apical half of the wing of Xenoneura (as I have supposed it to be formed) also bears a striking resemblance to the dictyoneuran wing ; but the base, which is preserved, and where the more important features lie, is totally different. The only other wing which shows particular resemblance to any carboniferous form (we must omit Dyscritus from this consideration, as being too imperfect to be of any value) is Platephemera, where we find a certain general resemblance to Ephemerites Riickerti Gein., and Acridites priscus Andr., but this is simply in the form of the wing and the general course of the nervules ; when we examine the details of the neuration more closely we find it altogether different, and the reticulation of the wing polygonal and not quadrate as in the carboniferous types.’ In this respect indeed, Platephemera differs not only from all modern Ephemeridae, but also from those of other geological periods. Another prevailing carboniferous type, the Termitina, is altogether absent from the devonian. Half a dozen wings, therefore, from rocks known to be either devonian or carboniferous, would probably establish their age. 8. The devonian insects were of great size, had membranous wings, and were probably aquatic in early life. The last statement is simply inferred from the fact that all the modern types most nearly allied to them are now aquatic. As to the first, some state- ments have already been made; their expanse of wing probably varied from 40 to 175 mm. and averaged 107 mm. Xenoneura was much smaller than any of the others, its expanse not exceeding four centimetres, while the probable expanse of all the rest was generally more than a decimeter, only Homothetus fallmg below this figure. Indeed if Xenoneura be omitted, the average expanse of wing was 121 mm., an expanse which -might well be compared to that of the Aeschnidae, the largest, as a group, of living Odonata. There is no trace of coriaceous structure in any of the wings, nor in any are there thickened and approximate nervules — one stage of the approach to a coriaceous texture. 9. Some of the devonian insects are plainly precursors of existing forms, while others seem to have left no trace. The best examples of the former are Platephemera, an aberrant form of an existing family ; and Homothetus, which, while totally different in the combination of its characters from anything known among living or fossil insects, is the only palaeozoic insect possessing that peculiar arrangement of veins found at the base of the wings in Odonata, typified by the arculus, a structure previously known only as early as 1Dr. H. B. Geinitz has kindly re-examined Ephemerites 2 The Dictyoneurae and their allies, as may be inferred, Riickerti at my request, and states that the reticulation isin are considered as belonging to the Palaeodictyoptera, general tetragonal, but that at the extreme outer margin although their ephemeridan affinities are not disregarded. the cells appear in a few places to be elliptical five- or six- sided. 32 SCUDDER ON THE DEVONIAN the jurassic. Examples of the latter are Gerephemera, which has a multiplicity of simple parallel veins, next the costal margin of the wing, such as no other insect, ancient or modern, is known to possess ; and Xenoneura, where the relationship of the internomedian branches to each other and to the rest of the wing is altogether abnormal. If too, the concentric ridges, formerly interpreted by me as possibly representing a stridulating organ, should eventually be proved an actual part of the wing, we should have here a structure which has never since been repeated even in any modified form. 10. They show a remarkable variety of structure, indicating an abundance of insect life at that epoch. This is the more noticeable from their belonging to a single type of forms, as stated under the seventh head, where we have seen that their neuration does not accord with the commoner type of wing structure found in palaeozoic insects.' These six wings exhibit a diversity of neuration quite as great as is found among the hundred or more species of the carboniferous epoch ; in some, such as Platephemera, the structure is very simple; in others, ike Homothetus and Xenoneura, it is somewhat complicated ; some of the wings, as Platephemera and Gerephemera, are reticulated ; the others possess only transverse cross veins more or less distinct and direct. | No two wings can be referred to the same family, unless Dyscritus belongs with Homothetus — a point which cannot be determined from the great imperfection of the former. This compels us to admit the strong probability of an abundant insect fauna at that epoch ; although many palaeozoic localities can boast a greater diversity of insect types, if we look upon their general structure as developed in after ages, not one in the world has produced wings exhibiting in themselves a wider diversity of neuration ; for the neuration of the Palaeo- dictyoptera is not more essentially distinct from that of the Palaeoblattariae or of the ancient Termitina, than that of Platephemera or Gerephemera on the one hand is from that of Homothetus or of Xenoneura on the other. Unconsciously, perhaps, we allow our knowledge of existing types and their past history to modify our appreciation of distinctions between ancient forms. For while we can plainly see in the Palaeoblattariae the progenitors of living insects of one order, and in other ancient types the ancestors of living representatives of another order ; were we unfamiliar with the divergence of these orders in modern times, we should not think of separating ordinally their ancestors of the carboniferous epoch. It may easily be seen, then, how it is possible to find in these devonian insects — all Neuroptera or neuropterous Palaeodictyoptera — a diversity of wing structure greater than is found in the carboniferous representatives of the modern Neuroptera, Orthoptera and Hemiptera. 11. The devonian insects also differ remarkably from all other known types, ancient or modern; and some of them appear to be even more complicated than their nearest living allies. With the exception of Platephemera, not one of them can be referred to any family of insects previously known, living or fossil; and even Platephemera, as shown above, differs strikingly from all other members of the family in which it is placed, both in general neuration and in reticulation ; to a greater degree even than the most aberrant genera of that family do from the normal type. This same genus is also more compli- cated in wing structure than its modern allies; the reticulation of the wing in certain 1 Cf. Mem. Bost. Soc. Nat. Hist., III, 19, note 1. - INSECTS OF NEW BRUNSWICK. 38 structurally defined areas is polygonal and tolerably regular, instead of being simply quad- rate; while the intercalated veins are all connected at their base, instead of being free. Xenoneura also, as compared with modern Sialina, shows what should perhaps be deemed a higher (or at least a later) type of structure, in the amalgamation of the externomedian and scapular veins for a long distance from the base, and in the peculiar structure and lateral attachments of the internomedian veins; in the minuter and feebler cross venation, however, it has an opposite character. 12. We appear, therefore, to be no nearer the beginning of things in the devonian epoch, than in the carboniferous, so far as either greater unity or simplicity of structure is concerned; and these earlier forms cannot be used to any better advantage than the carboniferous types in support of ahy special theory of the origin of insects. All such theories have required some Zoaea, Leptus, Campodea, or other simple wingless form as the foundation point; and this ancestral form, according to Haeckel at least, must be looked for above the silurian rocks. Yet we have in the devonian no traces whatever of such forms, but on the contrary, as far down as the middle of this period, winged insects with rather highly differentiated structure, which, taken together, can be considered lower than the mass of the upper carboniferous insects, only by the absence of the very few Hemiptera and Coleoptera which the latter can boast. Remove those few insects from consideration (or simply leave out of mind their future development to very distinct types), and the middle devonian insects would not suffer in the comparison with those of the upper carboniferous, either in complication or in diversity of structure. Furthermore, they show no sort of approach toward either of the lower wingless forms, hypothetically looked upon as the ancestors of tracheate Articulata. 15. Finally, while there are some forms which, to some degree, bear out expectations based on the general derivative hypothesis of structural development, there are quite as many which are altogether unexpected, and cannot be explained by that theory, without involving suppositions for which no facts can at present be adduced. Palephemera and Gerephemera are unquestionably insects of a very low organization related to the existing may-flies, which are well known to be of inferior structure, as com- pared with other living insects; these may-flies are indeed among the most degraded of the sub-order to which they belong, itself one of the very lowest sub-orders. Dyseritus too may be of similar degradation, although its resemblance to Homothetus leaves it altogether uncertain. But no one of these exhibits any inferiority of structure when compared with its nearest allies in the later carboniferous rocks, and they are all higher than some which might be named. While of the remaining species it can be con- fidentially asserted that they are higher in structure than most of the carboniferous types, and exhibit syntheses of character differmeg from theirs. It is quite as if we were on two distinct lines of descent when we study the devonian and the carbon- iferous insects; they have little in common, and each its peculiar comprehensive types. Judging from this point of view, it would be impossible to say that the devonian insects showed either a broader synthesis or a ruder type than the carboniferous. This of course may be, and in all probability is, because our knowledge of carboniferous insects is, in comparison, so much more extensive; but, judging simply by the facts at hand, it appears that the carboniferous insects carry us back both to the 34 SCUDDER ON THE DEVONIAN more simple and to the more generalized forms. We have nothing in the devonian so simple as Euephemerites, nothing so comprehensive as Eugereon, nothing at once so simple and comprehensive as Dictyoneura. On the derivative hypothesis, we must presume, from our present knowledge of devonian insects, that the Palaeodictyoptera of the carboniferous are already, in that epoch, an old and persistent embryonic type (as the living Ephemeridae may be considered to-day, on a narrower but more lengthened scale); that some other insects of carboniferous times, together with most of those of the devonian, descended from a common stock in the lower devonian or silurian period; and that the union of these with the Palaeodictyoptera was even further removed from us in time ;— carrying back the origin of winged insects to a far remoter antiquity than has ever been ascribed to them; and necessitating a faith in the derivative hypothesis, which a study of the records preserved in the rocks could never alone afford; for no evidence can be adduced in its favor based only on such investigations. The profound voids in our knowledge of the earliest history of insects, to which allusion was made at the close of my paper on the Karly types of insects, are thus shown to be even greater and more obscure than had been presumed. But I should hesitate to close this summary without expressing the conviction that some such earlier unknown comprehensive types as are indicated above did exist and should be sought. X. Nore on THE GeEoLoGIcAL RELATIONS oF THE Fossit INSECTS FROM THE DEvo- NIAN OF New Brunswick. By Principal Dawson, LL.D., F.R.S., &c. The beds affording these remains occur in the vicinity of the city of St. John, New Brunswick, and are well exposed on the shores of Courtney Bay, on the east side of the city, and at Duck Cove, Lancaster, on its western side. They consist of sandstones, shales, and conglomerates, having an aggregate thickness of about 7,500 feet,’ as shown in the following generalized section, in ascending order :— 1. Bloomsbury Conglomerate — Reddish-gray conglomerate with interstratified hard red shale. 500 feet. 2. Dadoxylon Sandstone —(Lower part of Little River Group in my Acadian Geol- ogy). Gray sandstone and grit, with beds of gray and black graphitic shale — Fossil plants, ete. 2,800 feet. 3. Cordaite Shales —(Upper part of the Little River Group)—red, gray and black shales, with beds of sandstone and conglomerate — Fossil Plants, ete. 2,400 feet. 4. Mispec Conglomerate— Red conglomerate and shale. 1,800 feet. In the vicinity of St. John, these beds rest on cambrian rocks of the Acadian (Mene- vian) group, and are overlain uncomformably by lower carboniferous (“sub-carboniferous’’ ) conglomerates, which in their extension eastward are associated with the Albert shales holding fossil fishes and plants of characteristic lower carboniferous types.” Elsewhere im 1 Report of Bailey and Mathew, Geol. Survey of Canada, 2 See for details the author’s Acadian Geology, 3d Edi- 1871. In the author’s Acadian Geology, the thickness is tion. given as 9500 feet; but later observations have reduced the thickness of the lower members. INSECTS OF NEW BRUNSWICK. 35 Southern New Brunswick, they overlie laurentian and huronian rocks, and are seen to rise unconformably from beneath the carboniferous rocks of the great central coal-for- mation area of New Brunswick.’ They are everywhere more disturbed and altered than the overlying carboniferous beds; and Messrs. Bailey and Matthew have shown that certain intrusive masses and dykes of granite, known to be of pre-carboniferous age, were erupted subsequently to the deposition of these beds. The vegetable fossils of this formation are very numerous. I have catalogued or des- cribed from it upwards of 50 species, belonging to the genera Dadoxylon, Sigillaria, Cal- amites, Asterophyllites, Lepidodendron, Cordaites, Psilophyton, Neuropteris, Sphen- opteris, Hymenophyllites, Pecopteris, &c.; the whole constituting a well-marked devonian assemblage, distinguishable from the upper devonian flora of Perry in Maine, which is perhaps newer than the Mispec conglomerate, and still more distinct from the lower earboniferous flora of New Brunswick and Nova Scotia, while on the other hand it is incomparably better developed than any known flora of silurian age. Owing to the richness of this flora, and to the fact that some genera and species of plants appear earlier in North America than in Kurope, some European palaeobotanists have been un- willing to admit the devonian age of this formation, but entirely without good reason. That some of the species of the St. John beds, as Calamites transitionis (=C. radiatus of Brongniart), are found in the lower carboniferous of Europe, is not wonderful, as in the devonian as well as in subsequent periods the flora of America has been somewhat in advance of that of Europe. Still the prevalent plants in the St. John beds are distinctively erian or devonian and not carboniferous. Further, recent discoveries of tree-ferns and petioles of ferns in great abundance in the devonian of New York, and as low as the Hamilton group, have shown that the devonian must have been even more remarkable than the carboniferous for the abundance and variety of its ferns. A few additional species of ferns found among specimens remaining in Professor Hartt’s collections will shortly be described. The crustaceans recognized in these beds are Hurypterus pulicaris Salter ; Amphipeltis paradoxus Salter, a precursor of the Stomapods; and a pygidium of a small trilobite, unfortunately too imperfect for determination. A species of Spirorbis, which I have described as S. erianus,? occurs attached to leaves of Cordaites, and is distinct from the common Spirorbis of the coal-measures (S. carbonarius or pusillus). A fragment of a spiral shell may possibly represent a devonian pulmonate, and will be noticed in a forthcoming paper on the pulmonates of the carboniferous. No other animal remains have been found in these beds, except the fossil insects. The conditions of deposit were probably estuarine rather than marine, and the abundant fossil plants testify to the prox- imity of land. It is difficult to correlate the subdivisions of the devonian in eastern Canada, with those in the great erian area of New York and western Canada, owing to the absence of the marine limestones, so characteristic of the latter. In my report on the fossil plants of the devonian and upper silurian of Canada,? I have, however, stated some grounds 1 Bailey and Matthew’s Reports, which see also for details 2 Report on devonian plants. Geol. Surv. Canada, 1871. of the structure and relations of the devonian and associated ® Geol. Survey of Canada, 1871. formations, in southern New Brunswick. 36 SCUDDER ON THE DEVONIAN for believing that the Dadoxylon sandstone and Cordaite shales may be equivalents of the Hamilton group in New York and Ohio, which has afforded some fossil plants compara- ble with those of the St. John beds, especially trunks of conifers of the genus Dadoxylon (Araucaroxylon). The horizon of the fossil insects of St. John would thus be middle devonian. In the finer shales of this series, the remains of plants are very perfectly preserved, the most delicate leaves having not only their outlmes but also their nervature repre- sented by films and lines of shining graphite, resembling pencil drawings on a dark gray ground. The insect wings are preserved in a similar manner. The discovery of the insect remains is wholly due to the late Prof. C. F. Hartt, who, with the aid of other gentlemen, members of the Natural History Society of New Bruns- wick, removed by blasting large quantities of the richest fossiliferous beds and examined them with great care. The extreme rarity of these remains renders it probable that but for the large quantities of material examined by Professor Hartt, they would not have been found; while the extreme delicacy of the impressions would have prevented them from being observed except by a very careful collector scrutinizing every surface in the search for leaflets of ferns, preserved in such a way as to be visible only under the most favorable light. These unusually perfect explorations should be taken into the account in any comparisons made of the fossils of this locality with those of other places. The following detailed section of the Little River Group, at the Fern Ledges, Lancaster, N. B., where the insects occur, is derived from Professor Hartt’s paper in Bailey and Matthew’s report before alluded to, and is substantially the same as given in my Acadian Geology. Section at the “ Fern Ledges.” (Order ascending.) Heavy beds of gray sandstone and flags (Dadoxylon sandstone). Dadoxylon ouan- gondianum Daws., Calamites, ete. Thickness, by estimation, 500 feet. Under this head I have classed all the beds underlying the Plant-bed No. 1, which I am disposed to regard as the lowest of the rich plant-bearing layers, and the base of the Cordaite shales. These beds occupy the low ground lying between the ridge of the Bloomsbury group and the shore. They are covered by drift, and show themselves only in limited outcrops, and in the ledges on the shore. In the western part of the ledges they are thrown forward on the beach by a fault, forming a prominent mass of rock, in the summit of which a fine trunk of Dadoxylon is seen embedded in the sandstone. Recent excavations made in these beds in quarrying stone for building purposes, in the eastern part of the locality, where the rocks are very much broken up by dislocations, have exposed numerous badly preserved impressions of large trunks of this tree. PLANT-BED No. 1. : : : : F ; ; : : Thickness, | foot. Black arenaceous shale, varying from a fissile sandstone to a semi-papyraceous shale, very fine-grained and very fissile, charged most richly with beautifully preserved remains of plants, among which are the following species :— Calamites transitionis Goeppert. (C. radiatus Br.) Occasional, in large, erect speci- mens.—A sterophyllites latifolia Daws. Extremely abundant, often showing ten or twelve whorls of leaves, sometimes with many branches.—A. acicularis Daws. Also INSECTS OF NEW BRUNSWICK. 37 very abundant.—A. scutigera Daws. The curious stems of this species, with their scale-armed nodes, occur abundantly in this bed.—Sphenophyllum — anti- quum Daws.—Pecopteris obscura Lesqx.—Sphenopteris sp.?-—Cardiocarpum cor- nutum Daws. Rare.— Psilophyton elegans Daws. Occasional. I have never detected any trace of Cordaites Robbii Daws., in this bed. It is extremely common in the overlying strata. Gray sandstones and flags, with occasional ill-preserved plants, Calamites transitionis Goeppt.—Cordaites Robbii Daws.— Asterophyllites and Sternbergiae . 2 feet 6 in. Black arenaceous shales of the same character as those of Plant-bed No. 1, but without fossils, so far as I have examined . : ; 3 . 11 inches. Compact flaggy, gray sandstone, with badly preserved plant remains, MC aleoniites ; eto. ‘ : : : : ‘ : ‘ : : , : : 2 feet. Very soft, dark, lead-colored shales, much slicken-sided and charged with frag- ments of plants. This bed is so soft that the action of the weather and the sea have everywhere denuded it to the level of the beach . : ; : 4 feet. PLANT-BED No. 2 . : ; ; z ‘ é z : . ; ; 1 foot. At the point where the section crosses the bed, and where I first discovered it, it con- sists of very compact and hard, light lead-coloured, slate-like, arenaceous shale ; but the character of the shale varies much in its different exposures, being sometimes very soft and fissile, and of a very black colour. The following is the list of species which it affords :— Calamites transitionis Goeppt. Occasionally; never in good specimens.—C. cannae- formis Brongn. Occasionally; never in good specimens.— Asterophyllites acicularis Daws. Rather rare—A. latifolia Daws. Rather rare—A. longifolia Brongn. (?). Rather rare—A. parvula Daws. Whorls of a minute Asterophyllites, which may belong to this species, are not imfrequent in this bed. — Sporangites acuminata Daws.—Pinnuaria dispalans Daws. Abundant.—Psilophyton elegans Daws. Quite common, always in fragments, never in good specimens.— P. glabrum Daws. Flattened stems, with a wavy woody axis traced in a brighter line of graphite, occur in this bed, but always in fragments.—Cor- daites Robbii Daws. Extremely abundant, and very fine specimens may be obtained, especially from the upper part of the bed, and rarely specimens showing the base or the apex of the leaf—Cyclopteris obtusa Lesqx. Occurs very abund- antly in detached pimnules—C. varia Daws. Rare.—Neuropteris polymorpha Daws. Extremely abundant, never in large fronds.——Sphenopteris Hoeninghausii Brongn. Quite abundant, often in fine fronds. =9 marginata Daws. Abundant, in fine fronds. —S. Harttii Daws. Very rare.—The original specimen came from this bed.— Hymenophyllites Gersdorfii Goeppt. Rather rare—ZH. obtusilobus Goeppt. Rare. —A1. curtilobus Daws.—Alethopteris discrepans Daws. Amongst all the abundance of plants afforded by Plant-bed No. 2, I have detected only one or two pinnules of this fern, which appears first in abundance in Plant-bed No. 3. It is afterwards one of the most common species.—Pecopteris ingens Daws. Very rare, only two or three fragments of pinnules having been found.—TZvrichomanites (?) Only a single speci- men, probably, as Dawson has suggested, only the skeleton of a fern—Car- 38 SCUDDER ON THE DEVONIAN diocarpum cornutum Daws. Abundant, and very finely preserved, never attached —C. obliquim Daws. Quite abundant, also never attached.— Trigonocarpum racemosum Daws. Rare.—Hurypterus pulicaris Salter. The occurrence in Plant- bed No. 2 of this minute crustacean was first detected by my friend Mr. George Matthew. It is very rare, not more than four or five specimens having been found by Messrs. Matthew, Payne, and myself at the time of the description of the species by Salter. I have since that time succeeded in collecting nearly twice as many more, some of which appear to belong to a new species.—Amphipeltis paradoxus Salter. The specimen figured in Salter’s paper was found by Professor Dawson and myself, m breaking a piece of shale in my cabinet, that came from this bed. Only one other specimen has since been obtained. It consists of two or more of the thoracic seg- ments, and was collected by Mr. Lunn. It is in the collection of the Natural History Society of New Brunswick. In addition to the above species, this bed has afforded the following :—Cyclopteris, sp. nov—Neuropteris, sp. nov. A single specimen collected by Mr. Lunn.—Sphenopteris, sp. nov.—Spirorbis erianus Daws. The leaves of Cordaites in the upper part of the bed are as thickly covered with a little Spirorbis as are the fronds of the recent fucoids of the Ledges. The specimens are poorly preserved. — TZrilobites. Mr. Payne collected a minute trilobite from from this bed, but it proved not determinable.—IJnsect Remains! In the sum- mer of 1862, I discovered an organism in Plant-bed No. 2, which at the time I could make nothing of; but which I have since proved to be the wing of an insect. Several weeks after, I found in Plant-bed No. 8 an unequivocal insect’s wing. This discovery was followed by that of others, my father, J. W. Hartt, finding another in this bed. [The insects of this bed are GEREPHEMERA SIMPLEX and XENONEURA ANTIQUORUM. | Compact flagey sandstone, quite barren . : ‘ ; : : 5 feet 10 inches. PLANT-BED No. 3 . : : : ; F : : : 5 : 10 inches. Black and lead-colored shales, quite compact in upper part, but in lower very crum- bling, splitting irregularly, slicken-sided, often with polished surfaces, and traversed by thin quartz-veins. These shales are so soft that the sea and weather have everywhere denuded them to the level of the beach. There are now no exposures of the bed work- able. The following are the fossils which occur in it :— Calamites transitionis Goeppt. Occasionally. — C. cannaeformis Brongn. — Aste- rophyllites latifolia Daws. Very beautiful whorls of this plant are very common here, the whorls, though usually detached, being sometimes found united three or four together.—Sporangites acuminata Daws. Common.—Pinnularia dispalans Daws. Common.—Psilophyton elegans Daws. Occasionally —P.(?) glabrum Daws. Occasionally.—Cordaites Robbii Daws. Extremely abundant, but not so well preserved as in Plant-bed No. 2. Leaves usually appear as polished bands of graphite, with venation obliterated —Cyclopteris obtusa Lesqx. Not very abundant. —Neuropteris polymorpha Daws. In beautiful specimens, common.—Sphenopteris marginata Daws. Not common.—S. Hoeninghausii Brongn. Not common.—Pecop- teris (Alethopteris) discrepans Daws. It was here that I first discovered this species. It occurs quite abundantly, but always in fragments.—Cardiocarpum cornutum Daws. Quite common.—C. obliquum Daws. Quite common. INSECTS OF NEW BRUNSWICK. 39 Coarse sandstone, full of obscure casts of Sternbergiae and Calamites . 6 feet 6 inches. Soft shale and fissile sandstone, with Calamites oa. Sandstones . ‘ 5 , , F ‘ ‘ ‘ : : + 2feets 3 “ Shale with obscure remains of plants 24 « Sandstones, barren, so far as examined : P P : - Afeet10 « Sandstone and shale, with a few Calamites and Cordaites i , , 9 « Sandstone and coarse shale, with obscure markings 3 ’ . Ofeet 10 « Light greenish, coarse shale, with fern-stems, Cordaites, and obscure markings, Carpolites (?) « : : ‘ . fe Sandstones and coarse shales, with badly preserved vegetable remains 18feet 9 « PLANT-BED No. 4. ‘ ‘ : P a) tedGin Gs 5 < Coarse shales, affording at the point where the litte of section crosses it : — Cordaites Robbii Daws—Calanities transitionis Goeppt.—Neuropteris polymorpha Daws.—Psilophyton glabrum Daws.—Pinnularia dispalans Daws. Ihave examined at two different points, in the eastern part of this locality, a bed which appears to correspond to this. It is characterized there by a very beautiful Neu- ropteris* (.N. Dawsoni Hartt) with long linear lanceolate pinnules decurrent on the rachis, to which they form a broad wing. The pinnules are often four inches in length. This is one of the most beautiful ferns occurring at the locality. Several other new forms are associated with it. Among these is a magnificent Cardiocarpum, nearly two inches in diameter (C. Bailey Daws.). Sandstone with obscure markings : ; ‘ : : : : 9 feet 6 inches. PLANT-BED No. 5 é : F : , ; ‘ ‘ ‘ 6 inches. Soft, fine-grained fight- greenish shale. Cordaites Robbii Daws. Extremely abundant. — Calamites cannaeformis Brongn. Found occasionally.—Psilophyton (?) glabrum Daws.—(?) Asterophyllites acicularis Daws. — Alethopteris discrepans Daws. Quite abundant.—Sphenopteris marginata Daws. Quite abundant.—Pecopteris, sp. nov. (?) — Hymenophyllites sp. (?)—Neurop- teris polymorpha Daws. Very abundant—Spirorbis occurs in the bed, attached to the leaves of Cordaites. I have never detected it in any of the beds higher up. Compact flaggy sandstones and coarse shales, se a few plants. : ‘ : 8 feet. PLANT-BED Ne Oo. 6. : : : 2 feet. Fine-grained and light-coloured Bhald, with great abundance of Cordaites Robbii, and Calamites transitionis; above that a layer of coarse shale, with Cordaites and stems of plants badly preserved ; then a layer of soft, very friable shale, with few fossils; and lastly, a layer of coarse shale of a greenish-gray colour, with : — Alethopteris discrepans Daws. Abundant.—Cordaites Robbii Daws. Abundant.— Calamites cannaeformis Brongn.—WNeuropteris polymorpha Daws.—Cardiocarpum cornutum Daws.—Co ardiocarpum obliquum Daws.— Pecopteris, sp. nov. Occurs abundantly in some of the overlying beds. Sandstones and coarse shales, with abundance of plant remains, principally Cordaites and Calamites . ‘ ; ? ; : : E : : , 5 feet. * This plant belongs to a new genus, subsequently named Megalopteris. Report on devonian plants of Canada, 1871. 40 SCUDDER ON THE, DEVONIAN PLANT-BED No. 7 . 2 : : : é : . 2 feet. This is one of the richest plant- sigak Bi the peciod The shales composing it vary much in character in different exposures. They are for the most part of a gray colour and compact, like a fine-grained sandstone, though they pass into a light brownish, very fissile, soft shale, and there are some layers of a very black colour. Cordaites Robbii Daws. Very abundant, and in a beautiful state of preservation.— Calamites transitionis Goeppt. Not abundant as good specimens.—C. cannaeformis Brongn. Rare.—(?)Asterophyllites acicularis Daws. In very beautiful specimens, very common in certain thin layers. There are two or three other species, occurring also in the overlying beds, which appear to be new.— Sporangites acuminata Daws. Extremely plentiful. — Pinnularia dispalans Daws. Extremely _ plentiful.— (2?) Psilophyton elegans Daws. I have obtained several specimens of a Psilophyton growing in tufts, and closely resembling this species.—Neuropteris polymorpha Daws. Occasional.— Alethopteris discrepans Daws. Abundant, and obtainable in good specimens.—Cyclopteris obtusa Lesqx. Occasional.—Sphenopteris mar- ginata Daws.—Hymenophyllites subfurcatus Daws.—Cardiocarpum cornutum Daws. Quite abundant.—C. obliquum Daws. Quite abundant.—C. Crampu Hartt. — Alethopteris Perleyi Uartt—Sphenopteris pilosa Daws.—Several other plants not yet determined.—Insects. A single insect’s wing was obtained from this bed by my father and myself. Tea mserermen ANTIQUA. | Centred sandstone and coarse shales (barren of fossils). : ‘ ; : 3 feet. PLANT-BED No. 8. : : : : ; : : 1 foot 10 inches. Fine-grained, tough, but Reale aaartstones rather coarse shales, often of a greenish cast, and at the top a thin layer of very black shale very rich in plants. The middle por- tion does not contain so many plant remains, but the lower is as well stocked as the leaves of an herbarium. The followmeg are the fossils I have collected from it :— Cordaites Robbii Daws. As usual in great profusion, and in very fine specimens.— Calamites transitionis Goeppt. Occasional.—C. cannaeformis Brongn.—(?) Aste- rophyllites acicularis Daws. Quite common, together with one or two other species apparently new, which occur also in Bed 7.—Annularia acuminata Daws. Ex- tremely common, especially in certain layers—Pinnularia dispalans Daws. Abun- dant.—(?) Lycopodites Matthewi Daws. Rare.—Cyclopteris obtusa Lesqx.—Cyclop- teris, sp. nov.— Neuropteris polymorpha Daws. Quite frequent in detached pimnules. — Hymenophyllites subfurcatus Daws. Very common. — Alethopteris discrepans Daws. ‘This is the most abundant fern in this bed. It occurs usually in detached pinnules, though not unfrequently in considerable fronds.—Alethopteris. Besides the above, there are three or four other species, some of which occur also in Beds 6 and 71—Cardiocarpum cornutum Daws. Not very common.—C. obliquum Daws. Also not very common.—C. Crampii Hartt. Quite common.—Several other species of plants not yet determined.—/nsects. Two species, two specimens. One was obtained by my friend, Mr. James Hegan. [Three insects were obtained from the bed: Homorurerus rossitis, Dyscrirus veTustus and LirHENTomMUM Harrru. | 1 Probably the species afterwards described (Dr. Dawson’s — serrulata Hartt, and Pecopteris preciosa Hartt. Report of 1871) as Alethopteris Perleyi Hartt, Pecopteris INSECTS OF NEW BRUNSWICK. 4] Sandstones and coarse shales, with badly preserved Cordaites Robbii Daws., C. tran- sitionis Goeppt., and Alethopteris discrepans Daws. . ; : : : 26 feet. Fine-grained, light-greenish shale, with obscure remains . 3 . : : 1 foot. Sandstone and shales, with Calamites and obscure markings . : : , 23 feet. Total thickness of the beds embraced in this section : : . 440 feet, 11 inches. XI. EXPLANATION OF PLATE. Fig. 1. Homothetus fossilis (magn. ?). The dotted lines are conjectural; the break in the dotted line representing the outer border indicates the presumed amount of separation at that point to account for the bending of the outer piece of the wing. Fig. 2. The same (4). With no parts restored. Fig. 8. Lithentomum Harttii (4). The dotted lines show the presumed connection of the basal veins with the other fragment. Fig. 4. Dyscritus vetustus (4). Fig. 5. Xenoneura antiquorum (¢). The dotted lines indicate the supposed course of the veins and border where they are not preserved. A portion of the base is shaded to show the exact appearance of the concentric ridges; this basal portion is mostly drawn from the same stone as fig. 7, but the small fragment unshaded, at the extremity of the anal vein, and the cross vein are drawn in from the reverse of fig. 5, shown in fig. 6; so also is the larger apical piece with part of the lower margin, these two parts being more complete on the reverse than on the obverse. Figs.6 and 7. The same (}). With no parts restored. The apical fragment of fig. 7 is not represented ; it exists, but is not so complete as in fig. 6. Figs. 8 and 8. Gerephemera simplex (}). The two independent lines at the extremity of the costal margin are inserted from a drawing made under the camera when only these lines and the outer margin with the tip of the veins were exposed; in working out the rest of the wing these were broken away, but are here restored. The arrow indicates the direction of 8°, which represents the contour of the surface of the wing, the upper dotted extremity indicating the costal margin (shown to the left of the arrow), and the dots along its course the position of the veins it crosses. Fig. 9. Platephemera antiqua (4). The faint line of dashes above the marginal vein represents the margin of the wing, indicated on the stone by a slight darkening of the surface. The dotted lines at base and at tip indicate the presumed form of the wing. Fig. 10. The same (4). This figure, the reverse of fig. 9, is so placed in relation to the preceding as to indicate the probable expanse of wing of this insect; a fragment at the lower angle of this specimen is not preserved in fig. 9, which possesses a bit of the outer margin not found in this. Figs. 1, 2, 4, 6, 8, 10 represent specimens preserved in the museum of the Natural History Society of St. John, N. B. Figs. 3, 7, 9 represent specimens in the museum of the Boston Society of Natural History. Fig. 5 is a composite drawing from the specimens in each museum. The Boston Society of Natural History possesses the reverse of a small portion of fig. 8; and the St. John Society the reverse of No. 3, neither of which are engraved. The plate was executed by Messrs. Sinclair & Son of Philadelphia. Annivers. Memoirs Bost. Soc. Nat. Hist Scudder Pl. 1 ae ? 0) KK) J. Kenry Blake, delin. T. Sinclair & Son Jith Plole. DEVONIAN INSECTS 1830, ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY. 1880. THE GYMNOSPORANGIA OR CEDAR-APPLES OF THE UNITED STATES. By W. G. FARLOW. BOSTON: PUBLISHED BY THE SOCIETY. 1880. my ” i ; ae’ We rie 1h) re 1 ! . , 7 e. = - : ‘i t =) : . aA | f . — " At sian 7 As Te uv eer wn 1 - 7 ; - oD re jt OF ihe ae : i ot ; in a" he — ata: =i : : . me ; | ee oor a int ’ 1 Cas a a. a sY [2 i ‘ ‘eal : : a : *) j 7 ta - : : 1s ) : ei 7) , : : au a. ’ 2d His i =| ‘ + iv 7 ie 7 7 a he me 5 . A a © . Hy P p if 7 rv ; ys : oy lap ts + ||) - 7 s i). — lt 7 —— 7 7 4 4 FSBGLA el crmtive ii Ay aig ‘le 7 me ty He ma: : 1) | ele Ga gts wee Ae merry Bers Pe Cnn ar aT DY dS = PC ' 4 -_ ree _ ss ar Vane 5 : ome ay Peer ae a ee el = 7 ' * - WAN Sed alin 0) 7, Me Sepa Par tim ‘ed ; ’ 1) Pe he - : q G4 7 bits ce iv ’ sal a hd lsat ; oe ed 9 : : ; fe 7 Orme : lone : se , 7 lll fs ihe Ww 7 en - - i 3 } =o 5; a 7 af 7 rs , a 7 a ; 7 eo! ! 7 : : ye 7 a vie a al 7 ; J , ait, Z : A 7 r Al } saa =i - : ; } ~ 1 Ss 7 a H a 1, 7 . - : : i : 2 a & y ’ _ a . a7 - ~? , . Li ; i 7) ae 14 iv ‘eats - uF : 7 Pe i ie ’ _ Ss eae | oan i i= S 7 iz ae - 7 - = = : : 7 wv i | we <9 wt ’ ? ’ — : nha 7 ; ’ 7 » ; - SPE S ry ; pi ity yan i ovesaas hy Ds ~‘fihine. - 3 7 4 ; on : - = - as : Sa ' “a an iA 7 : THE GYMNOSPORANGIA OR CEDAR-APPLES OF THE UNITED STATES. By W. G. Fartow. THE UREDINEAE or rusts include a large number of species which are parasitic on living plants, and, if we adopt the modern view as to their development, they are remarkable for the transformations they undergo, which suggest rather the metamorphoses familiar to us in insects than the ordinary phases of plant life. By earlier writers, the Uredineae were divided into different genera, which were supposed to be distinct, and not genetically con- nected with one another. Thus, for instance, there were the genera Puccinia, Uredo, and Aecidium, each containing a large number of species. That species of certain genera usually preceded or accompanied species of other genera, as Puccinia, was well known, but the two were not supposed to have any genetic connection, and the relation between them was regarded as either quite accidental, or else cases of parasitism. In 1848 Gasparrini’ observed the mode of germination of the spores in Podisoma, a genus closely related to Puccinia, and in 1854, Tulasne? extended the observation to the spores of several other genera of Uredineae. He also advanced the opinion that the so-called species of Uredo, Trichobasis, Lecythea, and related genera were merely early stages in the development of species of Puccinia, Phragmidium, Melampsora, ete. In a paper by De Bary,’ published in 1863, it was maintained that not only were the species of Uredo and their allies forms of development of other genera, but that the so-called species of Aecidium as well were not distinct, but that they too represented stages of development of Puccinia, Uromyces, and other genera, and in point of time preceded the stage described by Tulasne as the stylosporic or uredo condition. The papers of Tulasne and De Bary, as might be supposed, gave a fresh interest to the study of the Uredineae and, while previously mycolo- gists had been mainly occupied with describing large numbers of species based on the microscopic character of the spores and the gross appearance of the spots produced in the host-plants, after the appearance of the two papers mentioned it became the fashion to try to ascertain the genetic connection between the different forms known as Aecidia and Uredines and the different species of Puccinia, Uromyces, ete. The views of De Bary and Tulasne were, as a general rule, accepted by all the leading mycologists of the con- tinent, but were not so readily received by those of Great Britain. At the present day, the 1Qsservazioni sulla generazione delle spore nel Podisoma ® Recherches sur le développement de quelques champig- fuscum. Rendiconto R. Accad. Scienze Napoli, 1848. nons parasites. Annales des sciences naturelles. 4 Série. 2Seconde mémoire sur les Urédinées et les Ustitaginées. Tome 20. Annales des sciences naturelles. 4 Série. Tome 2. 4 FARLOW ON THE GYMNOSPORANGIA connection between the uredo forms and other final forms is generally admitted, and the relation of the aecidial stage to the others, as shown by De Bary, is considered to be proved beyond a doubt by nearly all continental mycologists, although there are a few exceptions ; but British botanists remain more or less sceptical on the subject. In consequence of the prevalent view with regard to the development of the Uredineae, writers have ceased retaining such genera as Uredo and Aecidium except as receptacles for the forms which have not yet been connected with any definite final form, and on the continent a new nomenclature has arisen which has not as yet been adopted by American writers. For the purpose of illustration let us take Puccinia Graminis, the common blight on grass which was minutely studied by De Bary.’ The final form appears as black spots or lines on the leaves and stems of grasses, and is composed of dark colored, rather thick-walled spores, formed of two more or less conical cells united by their bases and at- tached at the lower end to a mycelium. These two-celled spores are called teleutospores and, in the case of Puccinia Graminis, are produced in the autumn. When left to them- selves, they germinate the next spring in the following manner. From each cell is given off one, or occasionally two or three, delicate filaments, which scarcely exceed in length the length of the teleutospore. The upper part of the filament becomes somewhat enlarged, and there are generally formed from two to four cross partitions by which the filaments are divided into two to five cells. The upper cells grow out laterally and bear each a small ovoid cell which readily falls from its attachment. The name given by Tulasne to the ger- minating filaments was promycelium, and he called the secondary small ovoid cells sporidia. In the case of Puccinia Graminis, according to De Bary, the sporidia do not grow except on the common barberry, on which plant they produce in the spring or early summer what is popularly called a cluster-cup, or in botanical language an aecidium. The so-called aecid- ium is a complex affair. The mycelium from the germinating sporidia produces in spots a swelling and discoloration of the barberry leaves. The spots are more or less of a reddish- yellow color, and there soon appears on the upper side of the leaves a number of minute, deep brown pustules called spermogonia. A section through the spermogonia shows that they are cavities lined with slender filaments, the tips of which, called spermatia, separate and escape in masses from the spermogonia. Soon after the appearance of the spermogonia on the upper side of the leaves, the lower surface swells and bears a number of cups, the aecidia proper. The cups are really formed inside the leaf, and are sacks com- posed of a cellular covering or peridium, and orange-colored spores arranged in rows arising from the base of the peridium. When they come to the surface, the peridia rup- ture and the spores readily escape. The aecidial spores germinate upon different grasses, and produce in summer what is called the rust, that is, spots or lines containing a rusty colored powder. The rust stage is called by botanists the uredo and consists of rather del- icate, oval, unicellular spores of an orange-red colour, often called stylospores, attached to amycelium. Like the aecidial-spores, the uredo-spores easily fall from their attachment, and germinate on grass and produce late in the season the pustules which bear the teleuto- spores already described. As has already been remarked, these different stages were kept as distinct species by 1 Recherches sur le développement de quelques champig- Neue Untersuchungen iiberUredineen. Monatsber. Akad. nons parasites. Annales des Sciences naturelles. 4 Serie. Wiss. Berlin, 1865-66. Tome 20, 1863. OF THE UNITED STATES. 5 older writers. The teleutospore condition was called Puccinia Graminis ; the uredo con- dition Uredo linearis; and the aecidial condition Aecidiwn Berberidis. Recent writers merely speak of the species Puccinia Graminis, including by that all the different stages. To designate the old Aecidium Berberidis they say Puccinia Graminis, fungus hymen- iferus, and to designate the Uredo linearis they say Puccinia Graminis, fungus stylospor- iferus. Or more briefly one says Puccinia Graminis (Uredo) or (Aecidium) as the case may be. To understand at once what is meant by the different expressions one must be acquainted with the literature of the development of the different species, and that is a diffi- cult matter for us in America, since the observations on the subject are scattered in numer- ous journals, some of which are seldom met with in this country. Since the development of Puccinia Graminis is probably as well known as that of any species of the order, and is furthermore, the species in which the development was first studied by De Bary, we may use that as a type in studying other members of the order. The development is represented in four different stages, viz.: 1. Teleutospores on grass in the autumn. 2. Promycelium and Sporidia produced in spring directly from the teleutospores. 3. The Aecidium produced in May or June on the barberry, comprising two sets of organs, the Spermogonia with their spermatia and the cups or Aecidia proper. 4. The Uredo produced on grass from the spores of the Aecidia. 1. Teleutospores produced from the uredo-spores. There is a cycle of four different stages, which, taken together, constitute the life of the individual Puccinia. It will be remarked that two of the stages are found on grass, one on barberry, and one is produced directly from the teleutospores wherever they may be. At present we are only interested in the genus Puccinia in so far as it is a type of the or- der, and we must next see how far the other species of the order agree with Puccinia Graminis. In the first place, if we consider the species of Puccinia alone, we find that it is only in certain species that aecidial and uredo conditions are supposed to exist. In some species, as P. Malvacearum Mont., only teleutospores are believed by some to occur. In P. anemones Pers., uredo-spores are unknown; in a large number of species aecidia are unknown. Furthermore, in case of the species in which all the different stages are known to occur, some have them all produced on the same host-plant, while others, as we have seen in P. Graminis, bear them on different plants. It may be asked whether in the cases where aecidial or uredo conditions are unknown, we are not to expect that they will be hereafter discovered. Such is probably true in most cases, but still there are species, as P. malvacearum, in which it has been supposed that they are absolutely wanting. For the purpose of expressing the presence or absence of the different stages and their relative position, Schroeter divided the genus as follows: Eupuccrnia. All stages known and all on the same plant. Hereropuccrnia. All stages known. Aecidia and spermogonia on one plant, uredo and teleutospores on another plant. : Hemipuccinta. Only stylospores and teleutospores known, and both occurring simul- taneously on the same plant. Pucciniopsis. Spermogonia, aecidia, and teleutospores known and on different individ- uals of the same species. Uredo unknown. 6 FARLOW ON THE GYMNOSPORANGIA Microruccrnta. Only teleutospores. known. Spores quickly detached but not ger- minating except after a considerable interval. LepropucciniA. Only teleutospores known. Spores persistent, germinating quickly. From the above named divisions it is evident that there is no want of variety in the genus Puccinia, or perhaps it would be better to say that there is a very considerable ignorance of the forms which may occur. Turning from Puccinia to other genera of the order, in Uromyces, of which the teleutospores differ from those of Puccinia in being one- celled, we have the same variations in the presence or absence of the different stages and Schroeter divides the genus in a similar way, into Euromyces, Hemiuromyces, etc. In the genus Gymnosporangium, which differs from Puccinia in its gelatinous nature, only aecidia and teleutospores are known. In Cronartium aecidia are unknown. In all the genera the teleutospores are supposed in germinating to produce the characteristic pro- mycelium and sporidia, although as I shall have occasion to remark later, this is subject to modification, while the aecidial spores and stylospores germinate by giving out one or more germinal filaments as is the case with the spores of most fungi. In the aecidia the spores are always either orange colored or brownish, and are formed in chains which arise from a sort of placenta formed by the mycelium, at the base of the cellular sack known as the peridium. Spermogonia are present in the aecidial stage, and are developed earlier than the cups, or aecidia proper. The relative abundance and position of the spermogonia with respect to the aecidia themselves, vary in the different species.. They are sometimes on different sides of the leaves, as in Puccinia Graminis, some times mixed rarely on different parts of the plant. The uredo forms of the different genera vary more than the aecidial forms. Asarule the spores are borne singly, but in some genera, as Coleosporium, they are in chains. The so-called peridium found in the aecidia is wanting in the uredo forms, but there is sometimes a false peridium formed from the cells of the host plant, or the spots are surrounded by a circle of sterile cells, called paraphyses, derived directly from the mycelium. Spermogonia are usually wanting, but are found in a few cases. The teleutospores of the different genera vary greatly im several respects ; they may be unicellular, as in Uromyces and Melampsora; two-parted, as in Puccinia and Gymnosporangium; or many-celled, as in Phragmidium and Xenodochus. They may vary from gelatinous, as in Gymnosporangium, to dense and indurated, as in Melampsora. They may rise above the surface of the host plants in columns, as in Cronartium, or may be sunk among the epidermal cells, or even produced within them, as in Melampsorella. The principal generic distinctions are derived from the characters of the teleutospores, but as far as possible, continental writers have regard to the respective aecidial and uredo forms. The genera are perhaps not in all cases well marked, but they are at least quite as well defined as in the other orders of fungi. In studying the Uredineae of the United States, one, for several reasons, naturally begins with the genus Gymnosporangium. The species of the genus are comparatively few in number, and are, with us, found only on different Cupressineae. The teleutospores occur in spring or early summer, and resemble those of Puccinia in being generally though not always two-celled, but differ from them in being borne on very long hyaline stalks, the whole being imbedded in a mass of jelly which in moist weather swells up and forms the OF THE UNITED STATES. G6 orange colored masses, which are supposed by many to be the flowers of the cedar-trees. Probably in no part of the world are the species so abundant as in the eastern United States, and material for study can be procured in the greatest abundance. In one respect this abundance has its advantages, in another it has its disadvantages. The Gymnosporangia of Europe, compared with our own, are few in number and much less abundant, the number of species found in central and northern Europe being limited by Oersted and Reess to three. Oersted, of Copenhagen, was the first to study their devel- opment. He connected the gelatinous teleutosporic stages which occur on species of Juniperus with the elongated cluster-cups placed formerly in the genus Roestelia, which are found in summer on the leaves of different Pomeae, thorns, pears, apples, etc. He went so far as to connect each of the three species of Gymnosporangium found in Denmark with a particular species of Roestelia. The experiments of Oersted consisted in sowing the germinating sporidia of the Gymnosporangia on leaves of different Pomeae. I shall have occasion to return to this subject later, but it is sufficient to notice in this connection that Oersted’s ' observations were afterwards confirmed by De Bary? and others in Ger- many, Cornu’ in France, and Cramer * in Switzerland, and accordingly the genus Roestelia has been suppressed by recent continental writers, who refer to the species formerly placed in that genus as the aecidial or hymeniferus stage of the different Gymnosporangia. Ifone then would study the American species of Gymnosporangium in the light of modern research, he must also take into account. the different Roesteliae of which we have an abundance. The first step is to settle the species of the two genera on anatomical grounds, and then by cultures or observations in the field to ascertain their genetic rela- tions. I insist on the importance of first defining the species from their anatomical struct- ure, for unless this is done any cultures which may be made can have very little value and one is constantly gropimg in the dark. One may afterwards modify his view of the species in consequence of knowledge derived from artificial cultures, but one should not, for instance, conclude at once, because the sporidia of a given species of Gymnosporangium produce spermogonia when sown on the leaves of two plants which are known to have Roesteliae differing in their morphological characters, that the two Roesteliae are the same species in spite of their different appearance. In determining the species of the two genera one is obliged to ascertain which of our species are the same as those found in Europe, and here a difficulty arises, for one is not quite sure in some cases how far a Euro- pean species of fungus may vary from the type when growing upon a different host from the one on which it occurs in Europe. In this case one would gladly resort to artificial cultures to settle the question. Unfortunately for us who are obliged to follow in the steps of Europeans in so far as the determination of species common to both continents is concerned, European writers have not agreed amongst themselves as to the limits of 1Bot. Zeit., 1865, 291; and 1867, 222. Nouvelles observa- tions sur un champignon parasite dont les générations alter- nantes habitent sur deux plantes hospitaliéres differen tes. tesvampe og navnlig om den genetiske Forbindelse mellem Sevenbommens Baevrerust og Paeretraeets Gitterrust. Copenhagen, 1868. Bulletin de 1’ Académie Royale des Sciences de Copenhague, 1866. Nouveaux essais de semis faits avec des champignons par- asites. Loc. cit., 1867. Om en saeregen, hidtil ukjendt Udvikling hos visse Snyl- 2 Bot. Zeit., 1865, 222. 8 Bull. Soc. Bot. Tome 25, pp. 122, 221, &e. “ Ueber den Gitterrost der Birnbiiume and seine Bekiimp- fung. Schweizer. landwirthschaft Zeitschrift. Solothurn, 1876. 8 FARLOW ON THE GYMNOSPORANGIA their species. Reess! is the most recent writer who has given the synonymy in detail, and I have in most cases followed his account, and have only given in full the special Ameri- can references. The greater part of the present paper is devoted to an account of the morphological characters of the species of the two genera found in this country, and I have been unable by means of cultures to arrive at as definite results as I should desire ; but a record of one’s failures is hardly less important, than an account of one’s success. I have myself collected large quantities of Gymnosporangia and Roesteliae in the region around Boston, and I am greatly indebted to Mr. H. W. Ravenel, of Aiken, and Dr. J. H. Mellichamps of Bluffton, for material from South Carolina; to Mr. J. B. Ellis of Newfield, N. J., and Mr. C. H. Peck, the State Botanist of New York, for valuable notes as well as specimens; to Mr. C. B. Fuller for specimens from Portland, Me., and to Dr. H. W. Harkness for specimens from California. I must particularly express my indebtedness to Dr. M. Cornu of Paris, for his notes on European and American species, as well as for a valuable series of specimens, and to Prof. C. Cramer, of Zurich. I have examined the specimens in Herb. Curtis to which reference is made by Berkeley in Grevillea Vol. 11., p. 55-59, the speci- mens in the Sprague collection of the Boston Society of Natural History, and some orig- inal specimens of Schweinitz, which, however, were not in a good state of preservation, besides numerous series of Fungi Exsiccati published in Europe and this country. GYMNOSPORANGIUM De Cand. Spores yellow or orange-colored, usually two-celled, occasionally one- to six-celled, on long hyaline pedicels, imbedded in a mass of jelly which when moistened swells into col- umnar or irregularly expanded masses. Mycelium parasitic in the leaves and branches of different Cupressineae, producing in them various distortions. The different genera in which the species of the present genus were placed by writers previous to De Candolle, are given in detail in the paper of Reess and need not be repeated here. The genus was first described by De Candolle from unpublished papers of Hedwig in the Flore Frangaise, Vol. 11., 1805. Link? in 1809 separated the species in which the gelatinous substance was more or less conical or cylindrical, from those in which it was irregularly shaped, placing the former in Podisoma and retaining the latter in Gymnospor- angium. The two genera of Link have, until a comparatively recent time, been kept dis- tinct by European writers, and they were adopted by Schweinitz in the Synopsis Fung. Am. Bor., and by nearly all recent American writers. That the distinction depending merely on the shape of the gelatinous masses should not be called generic, is the opinion of probably a majority of the mycologists of the present day, although a number still keep the genus Podisoma. Accepting Gymnosporangium in its widest sense as adopted by European writers, we have a genus whose teleutospores are two-celled like those of Puc- cinia, but invested with a variable amount of colored jelly which assumes a more or less definite shape in the different species. Accepting also the opinion first advanced by Oer- 1Die Rostpilzformen der deutschen Coniferen. Abhandl. 2 Observationes in Ordinis plantarum, 1809. Naturf. Gesellschaft. Vol. x1. Halle, 1869. OF THE UNITED STATES. 9 sted the aecidial stage is found in the so-called Roesteliae which are found on different species of Pomeae but no indications of a uredo-stage have as yet been detected. An acquaintance with some of the more recently discovered American species shows that the original limits of the genus must be extended so as to include species in which the spores become several (3-6) celled, and in which the amount of gelatinous substance found is comparatively small. In other words, as far as can be judged from the teleutosporic condition, the genus evidently approaches Phragmidium in G. Eilisii, which species can- not well be placed in a separate genus, as was done by Kérnicke! in forming his genus Hamaspora. The teleutosporic condition of Gymnosporangium unlike that of most of the other genera of Uredineae of temperate regions, is found in the spring, and the species of the United States occur only on species of Juniperus, Cupressus, and in California on Libocedrus. The production of the promycelium and sporidia is seen with the greatest ease and, in fact, after a shower the orange-colored masses are covered with the latter. When, however, the masses after having been wet are quickly dried, instead of a produe- tion of sporidia from the promycelium, the latter divides quickly into a number of cells which separate from one another, and which on remoistening send out germinal tubes just like the sporidia. A similar transformation of the promycelium was noticed by Cramer, loc. cit., p. 7, in Gymnosporangium fuscum growing in Switzerland. In the Northern States the teleutospores make their appearance usually from the middle of April to early in May according to the season, reach perfection in May and disappear at the end of June. In the South they are found considerably earlier. The principal characters used in distinguishing the species are the shape and size of the gelatinous masses, the shape and size of the spores, and the number of cells of which they are composed, the number and position of the promycelia produced from each cell, and the form and character of the swellings or distortions produced in the plant on which they are parasitic. The particular shape of the gelatinous masses in any given species depends con- siderably upon the age and amount of moisture, and in all species, after having been repeat- edly expanded by numerous showers and again dried, they become amorphous. When first appearing after the rupture of the epidermis, or outer bark, they are in the form of cush- ions of a dark velvety color. As they reach perfection, the forms they assume may be divi- ded into three; the cylindrical, which may be either blunt or acutely attenuated ; the flattened or wedge-shaped, which are usually blunt and crenate or partly divided ; and the irregularly expanded, which are broadly ovate or flattened and generally plicate. The usual number of cells is two, but even in species which normally have only two cells, one sometimes finds three or four cells. The single-celled spores are generally immature, but occasionally they bear promycelia. In two of our species the normal number of spores is greater than two. The number and position of the promycelia given off from each cell varies considerably in the same species. As a rule, they are not borne at the apex of the cells, but near the line of union of two cells. They are occasionally produced from the apex, and in one species, that seems to be the common position. In some species the usual number of promycelia to each cell is four, in others only one or two. The length of the promycelia depends upon the position of the spores in the gelatinous mass. ‘Those on or a 1 Hedwigia. Vol. Xvi, p. 22. 1877. 10 FARLOW ON THE GYMNOSPORANGIA near the surface have short promycelia, while those of the interior have very long ones, the object evidently being that the tips which bear the sporidia may reach the light and air. One of the most curious and interesting phenomena connected with the growth of Gym- nosporangia is the peculiar distortions which they produce in the plants on which they are parasitic. The mycelium does not differ much from that commonly found in the other Uredineae. It is irregular, much branched, and cross partitions are rather numerous. Un- like, however, the mycelium of some of the Pucciniae, that of the species of the present genus is limited in extent, and is not found throughout the whole of the plant on which it is growing, but is confined to certain portions of the stems or leaves. The mycelium of most of the species is perennial, that is, the mycelium which has produced a crop of spores one year, will the next year, under ordinary circumstances, produce another crop in or near the same place. One species, however, and possibly others are annual, the spores of one year not following those of another in the same place. The kinds of distortion pro- duced vary with the species, but it is probable, although not absolutely certain, that the same species produces different deformities when growing on different species of plants. This we might perhaps account for by a difference in the histological character of the two plants, but exactly why two different species of Gymnosporangium parasitic on the same individual cedar, should produce two widely distinct deformities is less easily explained. In the mere appearance of the mycelium itself, one can not see any cause for the different growths produced. The explanation is evidently to be sought in the amount and extent of the mycelium, the rapidity of its growth, and its duration. Thus in a rapidly growing annual species, as G. macropus, we have a large, rather spongy excresence which shrivels in drying. In G@. JSuscum var. globosum, which is perennial, and of slower growth, the excrescence is more dense and scarred externally. In G@. biseptatum the mycelium is comparatively limited in amount, and does not increase rapidly, and in consequence, the formation of the annual woody layers is not prevented, nor the nutrition of the branches above much interfered with. The mycelium is found principally in the region of the cambium, and acts rather as a stimulant than as a destructive agent, and the result is that a nodose swelling is formed in consequence of the unusual development of the wood in the region of the fungus. In G@. Eilisii, which like the previous species, grows on Cupressus thyoides, there is a more luxuriant and rapidly growing mycelium, which extends for some distance along the smaller branches, and is so abundant as to interfere with the nutrition and, in consequence, the branches above become short and stubby, and, at length, densely fasciculated, the branch below the fungus remaining unchanged, so that we have, instead of a nodose swel- ling, a dense tuft of short branches borne on the end of a normal branch. In other species the mycelium traverses the leaves, which are distorted throughout, so that the branches infested by the fungus and those free from the fungus, seem to belong to differ- ent species, so regular is the hypertrophy of the leaves. In this connection it may be remarked that in some places the distortions are not altogether due to the direct action of the fungi themselves, but are produced in part by the secondary action of the disor- dered nutrition combined with the effect of the weather. Nor can one infer from the OF THE UNITED STATES. 11 amount of the gelatinous expansion on the exterior, how destructive a particular species is to the plant on which it is growing. G*. macropus, for example, is much more striking to the eye than G. clavipes, but the latter is more destructive to the plants upon which it grows. GyMNoOspoRANGIUM Exuisi (Berk). Plate 2, figs. 13-17. Podisoma Ellisii Berke., Grevillea, Vol. 11, p. 56; Farlow, Bull. Bussey Inst., Vol. u, p. 226. Exsicc. Thiimen, Herb. Mycol. Oeconom., 440. Hamaspora Ellisii Kérnicke, Hedwigia, Vol. xvi, p. 22. Gymnosporangium Eillisvi, in Ellis’s North American Fungi, Fase. m1, No. 271. Sporiferous masses numerous, scattered, cylindrical, filiform, from one-eighth to a quar- ter of an inch high; spores dark yellow, linear-fusiform, obtuse, usually 3-4 celled, some- times 1-5 celled, 10u-16u in diameter, 75u-190u long, average 120u-150u; pedicels long and slender; promycelia short and much curved, usually one from each cell. Mycelium perennial, distorting the smaller branches. On Cupressus thyoides. Newfield, N. J. (Ellis); Newton, Dedham, Wood’s Holl, Mass. (Farlow). This is one of the many interesting species of fungi discovered by Mr. J. B. Ellis at Newfield, N. J. Previous to May, 1872, when it was first seen by Mr. Ellis, the species was quite unknown, although it is apparently not uncommon in the so-called cedar swamps along our eastern coast. It is the smallest and least gelatinous of the genus, but the trees attacked by it may be recognized, even at a considerable distance, by the peculiar distortions, which consist in a dense fasciculation of the smaller branches in different parts of the tree, so that, when viewed from a distance, one sees closely branching tufts of a somewhat fan-shaped or corymbose outline, which appear to terminate some of the branches. The fungus itself is only visible on close inspection. The branches affected are thickly covered with the sporiferous masses, which, when dry, are of a reddish-brown color, not very different from that of the bark itself, and which, when moistened, are orange-col- ored, and not generally more than from an eighth to a quarter of an inch long. The spe- cies is often associated with G. biseptatum which produces an entirely different distortion, affecting generally the larger branches. The leaves themselves are, however, but little dis- torted by the present species. The mycelium of G. Zilisii is of rather large size and in cross sections of the stems is seen to follow the medullary rays, sometimes extending nearly to the centre of the stem, and occasionally forming partial circles between the an- nual rings. In longitudinal sections of affected branches one sees the mycelium collected in brownish spots which extend far into the wood. The greater part of the mycelium is found near the cambium and it collects in masses in the bark to form the sporiferous bodies which originate at some little distance beneath the surface. The mycelium is perennial and extends gradually along the branches sometimes for a distance of eighteen inches, and they swell to about once and a half their normal diameter. 12 FARLOW ON THE GYMNOSPORANGIA The spores of G. Eilisii are very striking and differ from those of the rest of the genus in being very long and narrow and in being usually more than two-celled, the most usual numbers being three and four. The amount of jelly in the sporiferous masses is less than in other species, and in consequence dried specimens give a better idea of the fungus as it appears in nature than is generally the case in the present genus. The promycelia are very abundant and very short, the lower sterile part found in other species beimg almost wanting and the part bearing the sporidia being much curved, so that the promycelia com- ing from the cells of one spore sometimes wind round and enclose another spore, making dissection difficult without tearing off the promycelia. One not unfrequently finds spores in which the upper cell is more or less deeply cleft, as in Pl. 2, fig. 17. In spite of the fact that in certain details, @. Eilisii differs from the majority of the other species of Gymnosporangium it seems to me that Ko6rnicke’is not warranted in establishing a new genus Hamaspora, founded on two species, G. Ellisii growing on Cupressus thyoides and Phragmidium longissimum Thiim. growing on Rubus rigidus at the Cape of Good Hope. In the first place, the gelatinous substance is not wanting m G. Ellisii, as can easily be seen in examining fresh specimens, and furthermore, the fact that the spores are more than two-celled is equally true of G. biseptatum, a species which undoubtedly belongs to Gymnosporangium. On the other hand, in 1. long- issima Kornke., admitting that the teleutospores bear a great resemblance to those of G. Ellisii, the specimen in Mycotheca Universalis, No. 542, shows an abundance of uredo- spores surrounded by the circle of large paraphyses generally found in the uredo-spots of Phragmidium, while in G. Eilisii there are no uredo-spores at all. When we consider also that the species of Phragmidium generally occur on species of Rubus or related gen- era, and Gymnosporangium only on Coniferae, it would certainly seem that H. longissima should be kept in Phraemidium where it was placed by Von Thiimen, and that G. Hilisi should be retained in Gymnosporangium. Iam perfectly willmg to admit that the last named genus approaches the former, but the matter is not helped by creating a third genus less clearly marked than either of the others. The present is more limited in its range than our other species, as far as at present known. It probably has often been overlooked, on account of its small size, and may occur wherever the white cedar, Cupressus thyoides, is found. It is certainly common in such localities in Massachusetts, and in passing from Boston to Washington by railroad, I have seen the peculiar distortions along the whole route wherever the white cedar occurred. GYMNOSPORANGIUM CLAVARIAEFORME De Cand. Gymnosporangium clavariaeforme D. C., Flore frangaise, Vol. 1, p. 217; Reess, loc. cit., p. 21. Exsicc. Ellis, North American Fungi., Fase. m1, 273. Podisoma clavariaeforme Duby, Bot. Gall., Vol. m1, p. 881. Oersted, Nouveaux essais de semis. Pl. 5 and 4. Podisoma Juniperi communis Fr., Syst. Mye., Vol. m1, p. 548. 1Hedwigia, Vol. xv1, p. 22. OF THE UNITED STATES. 1133 Podisoma Juniperi Cooke, Decades of Maine Fungi,’ p. 185; Notes on Podisoma,’ Pl. 19, fig: 1. Sporiferous masses numerous, scattered or aggregated, yellowish-brown when dry, bright yellow when swollen, cylindrical or slightly compressed, acute or occasionally forked at the apex, from a quarter to half an inch high, spores narrowly lanceolate, those on the outside of gelatinous masses clavate, two-celled, 15u-—19u broad, by 55u—90u long ; promycelia usually one or two from each cell. Mycelium perennial, causing long fusiform swellings of the branches. On Juniperus communis. Portland (C. B. Fuller); Cape Elizabeth, Me. (E. C. Bolles); Maine, without locality, in Herb. Curtis (M. B. Blake, No. 579). Northern and Central Europe. Apparently not a common species in the United States and known to me only as occur- ring in Maine. It is said by Mr. C. B. Fuller to be common on the ground cedar in the islands in Portland Harbor, and some of the specimens collected by him were distributed by Ellis in North American Fungi. The species is not known to occur on leaves in the United States, but is found on the larger branches, which swell for a considerable distance to nearly twice their normal size, and become cracked on the surface. The sporiferous masses are quite yellow when swollen, and are not dark colored when dry, as in the case in G. fuscum. They are rather slender and pointed at the apex, and, although sometimes a little flattened, are not decidedly compressed as in some other species. I have never in American species seen the apex flattened and expanded, as is shown in the figure of Bul- lard referred to the present species by DeCandolle. The Portland specimens collected by Mr. Fuller bear the closest resemblance to No. 1088, of Rabenhorst’s Fungi Europaei, Series Nova. The spores, compared with those of our other two-celled species, are long and narrow. ‘Those borne on the outside of the gelatinous masses are clavate, or have the upper cell broader than the lower, and obtuse at the apex, but the spores in the interior are attenuated at both extremities as in G. macropus, but they are distinctly longer and more slender than the latter. The promycelia are, as a rule, fewer in number than in G. macropus, and one generally sees only one or two given off from each cell. In Europe the species is said also to occur on the leaves of Juniperus communis, and probably a close examination of plants affected will show that such is the case also in this country. The specimen in Herb. Curtis collected by Mr. Blake, is not in sufficiently good condition to show the shape of the sporiferous masses, but the spores suffice to show that the specimen belongs to the present species rather than to G. fuscum. GYMNOSPORANGIUM MACROPUS Lk. Plate 2, figs. 1-6. Gymnosporangium Juniperi virginianae Schw., Syn. Fung. Carol., Sup., p. 74, No. 504. 1822. Gymnosporangium macropus Link, Species Plantarum, Vol. vi, part 2, p. 128. 1825. Exsicc. Ellis, North American Fungi, Fasc. 3, No. 270. Podisoma Juniperi virginianae Fr., Syst. Myc., Vol. 1m, p. 57. 1832. 1Proc. Portland Soc. Nat. Hist. Vol. I, 1m, 1869. ? Journal of Quekett Microscopical Club, Noy. 1871. 14 FARLOW ON THE GYMNOSPORANGIA Podisoma macropus Schw., Syn. Fung. Am. Bor., p. 507, No. 5096, 1851; London Jour. Bot., Vol. rv, Pl. 12, fig. 6; Sprague’s Contributions to New England Mycology,* p- 829; Curtis’s Plants of North Carolina, p. 121; Peck’s 25d Report, p. 57; Notes on Podisoma, Pl. xrx, fig. 3; Grevillea, Vol. 3, p. 56. Exsicc. Ravenel, Fung. Car., Fase. 1, No. 85; Thiimen,? Mycoth. Univers., No. 148. Sporiferous masses aggregated in globose tufts, surrounded at the base by a ring formed by the raised epidermis and subepidermal tissue of the host-plant, orange-yellow, cylindri- cal, acuminate, half an inch to an inch long or, at times, longer ; spores ovate-acute, two- celled, generally constricted at the septum and with a papilla at the apex, 15u-20u broad by 45u-60u long; promycelia generally four from each cell. Mycelium annual, producing globose or reniform knots in the smaller branches. On leaves and smaller branches of Juniperus virginiana. Common from Massachusetts to South Carolina (Ravenél, Mellichamps), and extending west to Missouri (Englemann), Colorado (Palmer), and Wisconsin (Lapham). The common “cedar apple” of the Atlantic States, an? the most striking species of the genus. It is very abundant along the seaboard, but becomes rarer in the west. The knots together with the sporiferous masses, often measure three inches across when swollen. When dry the sporiferous masses are much shrunken, and as the knots do not differ much in color from the branches, they are not well seen from a distance. The species was first described by Schweinitz, in 1822, under the name of G. Juniperi virginianae. Link in 1825, described it in the Species Plantarum (Linnaeus and Willdenow), under the name of G. macropus, but why the Schweinitzian name was suppressed, or why Link placed the species in Gymnosporangium rather than Podisoma, a genus of his own creation, is not clear. In 1831, in the Syn. Fung. Am. Bor., Schweinitz adopted Link’s specific name, but placed the species in Podisoma, and it has generally been known since as Podisoma macropus Schw. Fries, however, retained Schweinitz’s original specific name, and called our plant Podisoma Juniperi virginianae. Notwithstanding that Schweinitz’s name given in the Syn. Fung. Carol. Sup., is the oldest, it must be abandoned in consequence of the confusion and awkwardness which has arisen from applying the compound names Junipert virginianae, Juniperi communis, Juniperi Sabinae, ete., to denote the different species. The present species, moreover, is by no means the only one found on J. virginiana, and it is on all accounts desirable to retain the name given by Link, and afterwards adopted by Schweinitz himself, at least as far as the specific name is concerned. The mycelium of G. macropus is abundant, and easily seen. It is found principally in the leaves, and there are haustoria which enter the parenchymatous cells. The fungus causes the leaves to swell, and finally ruptures them at about the central portion. One then sees a rounded mass tipped with the comparatively unchanged apex of the leaf. In some cases the gelatinous columns are produced when the knot is quite small, so that not 1Proe. Boston Soc. Nat. Hist., Vol. v. 1856. sisted in sending a letter with a drawing of the fungus to 2 Streinz, Nomenclator Fungorum, p. 455, gives Wyman Berkeley, asking the name of the species. The letter and as the authority for the species and in this error he is fol- Berkeley’s reply that the fungus was Podisoma macropus lowed by Von Thiimen. The Wyman in question was Prof. Schw. were published in London Jour. Bot., loc. cit. Jeffries Wyman, whose only connection with the species con- OF THE UNITED STATES. 15 more than two or three columns can find attachment, but generally the knots grow to from half an inch to an inch and a half in diameter, before the gelatinous masses break through the surface. The latter arise a short distance below the surface, and the outer portion of the knot consisting of several layers of cork cells is raised in flattened papillae. By the growth of the gelatinous masses the centre of each papilla is ruptured, and the columns risé vertically. The margin of the raised papilla remains behind, as a sort of collar around the base of each sporiferous mass. The shape of the fully developed knots is peculiar. In consequence of the fact that the cells of the outer part of the knots multiply more rapidly than those near the base, the knots become convex on the upper side and finally reniform, and are contracted beneath and attached by a small base. It has generally been supposed that the knots are usually outgrowths from the smaller branches, but such is not the case and, as far as I have been able to ascertain, they originate in a leaf. When the knots have attained a considerable size they appear to be terminal, because the branch above is pushed to one side. The young knots begin to appear about the end of August, and often reach a considerable size before winter. In the latitude of Cambridge, the gelatinous masses do not naturally appear before May or, exceptionally perhaps, in April, but if knots are gathered in Febru- ary or March and placed in a warm, moist place, they may be made to appear in from ten days to a fortnight. The knots persist after the sporiferous masses have been quite washed away, and from silvery-gray become brown and spongy, the surface being honeycombed, the depressions being the spots from which the gelatinous masses have disappeared. In by far the majority of cases, the knots gradually dry and drop off after having borne one crop of spores. In rare instances, however, a new knot may grow from one side of the old knot and bear a second crop of spores, but in this case the two portions remain quite distinct, one part being old, shrivelled and weather-worn, and the new part succu- lent, brownish-gray, and covered with sporiferous masses. By the nature of the knots alone one can distinguish between this and the following species. The latter is perennial, and between the sporiferous columns of one year one can easily see the scars of the last year’s masses. As far as concerns the gross appearance presented by G. macropus, the account given by Schweinitz in the Syn. Fung. Am. Bor. is quite accurate. He states that the spe- cies is rare in North Carolina, but common in Pennsylvania. He remarks also “ capitulum persistit per annum,” from which one may infer that he recognized that the species was an annual, a fact which succeeding writers have not sufficiently regarded. His description of the cedar-apples themselves is so minute and accurate that there can be no doubt that Schweinitz had either never seen the form described on a succeeding page as G. fuscum var. globosum, or at any rate clearly distinguished it from G. macropus. In the letter of Wyman, published by Berkeley in the London Journal of Botany, Vol. rv, p. 316, an ac- count is given of the germination of the spores and the distortions supposed to be produced by G. macropus, but it is evident from the description that Wyman had confounded G. macropus and G. clavipes. He says “I have made numerous searches for these parasites, but have almost never detected them, except in the localities mentioned, viz.: the tufts composed of acerose leaves and the “cedar apple.” The tufts with acerose leaves are not identical, as I believe, with the variety of form which occurs in the young shoots of the 16 FARLOW ON THE GYMNOSPORANGIA J. virginiana, described in Bigelow’s Med. Botany and by yourself (Sir J. W. Hooker to whom the letter was originally addressed), in the Flora Boreal. Amer., also in the description of the J. bermudiana in the London Journal of Botany for March 1843. The form of the leaf is in both cases acerose, but the tuft to which I refer forms a single dense mass, the twigs so crowded together as scarcely to allow the light to pass through, looking at a distance like the nest of some bird. These masses vary in size from that of the first to eighteen inches in diameter. Generally not more than one mass is seen on the same tree, sometimes, however, two or three. I have never seen a single tuft like those described in which the fungus in question was not present, and this is the result of a great number of observations.” Ths description of the acerose leaves and the dense growth of the branches, which look in the distance like bird’s nests, is excellent, but the species which causes this distortion of the branches is not G. macropus but G. clavipes, a distinct species as we shall see hereafter, and one haying no connection with the cedar-apples proper. The figures of Wyman represent the spores of G. macropus, except that some of them appear to be germinating at the tip in the mode characteristic of G. clavipes. The species is very widely distributed and is, as a rule, very common, but is not recorded in some localities where one would have expected it. Mr. Peck informs me that it is not common near Albany, N. Y., and it is not mentioned in Tuckerman’s Catalogue of the Plants growing near Amherst. It is certainly very common in Eastern Massachusetts, New Jersey, Pennsylvania and Maryland, and although said by Schweinitz to be rare in North Carolina, has been found by Ravenel and Mellichamps to be common in South Car- olina. The comparative scarcity of J. virginiana in the Western States would account for the absence of G. macropus in many Western localities. The injury done to the trees affected is comparatively slight, as was remarked by Schweinitz, and the reason for this is apparent if we consider the short duration and the mode of growth of the mycelium. The cedar-apples are said to be used as anthelmintics and the United States Dispensatory gives as the dose ten to twenty grains three times a day. In Massachusetts the use of the apples as medicine is, as far as I can ascertain, unknown, and the practice is probably confined to Pennsylvania and the Southern States. The spores of G. macropus are pretty uniformly ovate and acute at both extremities, and although they bear a certain resemblance to those of G. clavariaeforme, they are markedly shorter and broader. Schroeter suspects that G. macropus is only a form of the last-named species, but the fact that there is a difference in the spores and that one is annual and the other perennial, not to mention the difference in habit, clearly forbids a union of the two. GYMNOSPORANGIUM FUSCUM De Cand. Gymnosporangium fuscum D. C., Flore francaise, Vol. 11, p. 217; Reess, loc. cit., p- 16. Podisoma Juniperi Link., Observ. 1, p. 9; Species Plantarum, Vol. v1, part uo, p. 127; Sprague in Proc. Boston Soc. Nat. Hist., Vol. v, p. 329; Frost in Tuckerman’s List of Plants of Amherst. Podisoma Juniper Sabinae Fr., Syst. Mye., Vol. m1, p. 508. OF THE UNITED STATES. ily Podisoma fuscum Duby, Bot. Gall., Vol. u, p. 881; Cramer, Ueber den Gitterrost der Birnbiiume, PI. t. Podisoma Sabinae Oersted, Om en saeregen hidtil ukjendt Udvikling, etc., Pl. 1. Sporiferous masses numerous, generally approximated, brownish when dry, dark orange when swollen, a quarter to half an inch high, compressed-conical, or wedge-shaped, upper margin thick, rounded, sometimes notched ; spores roundish ovate, two-celled, fre- quently constricted at the septum, 38u—553u long, by 15u—22u broad; upper cell either nearly hemispherical or obtuse ; promycelia generally four from each cell. Mycelium perennial, causing long swellings of the branches. On stems of Juniperus virginiana and J. communis. Near Boston (Sprague); Amherst, Mass. (Frost); Catonville, near Baltimore, on im- ported species of Juniperus, (Farlow). Europe. This species, although apparently common in Europe, is, in its typical form, rare in the United States. It has frequently been confounded with Gym. clavariaeforme from which it differs in the shape and color of the sporiferous masses, which are in G. fuscum usually thick and wedge-shaped with a blunt margin, and of rather a dark, blackish brown color, especially when dry, while in G. clavariaeforme they are rather slender and cylin- drical. It also differs in the shape of the spores, which are shorter and stouter in G. fus- cum, and usually give off four promycelia from each cell. The spores vary considerably in outline, those on the surface being more decidedly oval and with a thick dark cell-wall, while those in the interior of the jelly are more acute and with thinner cell-walls. As is the case with -most of the species where the promycelia are given off near the sep- tum, the two cells at maturity retract from one another at the outer margin and only remain slightly adherent at the centre. The mycelium is found principally in the stems which have attained a certain thickness and causes them to swell for a distance of several inches. The sporiferous masses rupture the outer bark in elliptical spots which may be isolated, or, as is more frequently the case, are rather closely approximated. In American catalogues and herbaria one rarely finds the specific name fuscum applied to the present species, but it usually figures under the name Podisoma Juniperi Lk., and occasionally as P. Juniperi Fr., which is incorrect, as there is no proper P. Juniperi Fr., the name given by Fries to the present species being P. Juniperi Sabinae. The name P. Juniperi Lk., it must be remarked, has been rather loosely applied in this country to sev- eral distinct species, and when occurring in catalogues of fungi allowance has to be made for the determination. In Herb. Curtis, for instance, of the different specimens marked P. Juniperi, Lk., one from Maine is G. clavariaeforme; one from Pennsylvania (Michener, 949) and one from Hillsboro, N. C., collected by Curtis himself, are G. clavipes, and one from Sprague is G. fuscwm. Specimens which may with certainty be referred to G. fus- cum are fewin number. The specimens of Frost, which I have been unable to examine, were on J. communis. Of Sprague’s specimens one in the collection of the Boston So- ciety of Natural History, and one in Herb. Curtis are the true @. fuscum on what appears to be J. virginiana. The spores in Sprague’s specimens are rather more slender than in European specimens, being 46u-57u long by 15u-19u broad, but in other respects they are quite typical. Whether the P. Juniperi of Schweinitz, Syn. Fung. Am. Bor., No. 3095, is to be referred to the present species or to G. clavariaeforme is uncertain, the original 18 FARLOW ON THE GYMNOSPORANGIA specimen which I have examined not being in condition to be determined with accuracy. The only instance where I have myself seen the species growing was on the estate of Mrs. Lerman at Catonville near Baltimore, where several imported Junipers were, in May 1879, badly affected by a fungus which was without doubt G. fusewn. I have never collected the present species on J. virginiana, but besides the specimens of Sprague already men- tioned it was found by Tulasne on J. virginiana in France. I am indebted to my friend Dr. Cornu for an opportunity of examining a portion of Tulasne’s specimen and it seems to me that the fungus in that case is the same as that collected by Sprague and referred to G. fuscum. Dr. Cornu,’ however, distinguishes between Podisoma Juniperi Sabinae and P. fuscum, and it is to the first named form that he thinks the specimens found by Tulasne on Juniperus virginiana should be referred. The P. fuscwm on J. Phoenicea figured by Gasperrini has been separated by Cooke as a new species under the name of G. Phoeniceae. GYMNOSPORANGIUM FUSCUM, var. GLOBOSUM Farlow. Pl. U figs. 7-11. Podisoma fuscum Cooke, in Notes on Podisoma, p. 10, 1871; Peck, in 25th Report, New York State Botanist, p. 89, 1873; Farlow, in Bull. Bussey Inst., Vol. mu, p. 225. Sporiferous masses densely aggregated, dark brown when dry, yellowish orange when swollen, a quarter to half an inch high, compressed conical or wedge-shaped ; spores ovate, sub-acute, 38u—45u long, by 19u—21u broad ; promycelia usually four. Mycelium perennial, forming globose swellings in the branches. On the smaller branches of J. virginiana. From Massachusetts (Farlow) to South Carolina (Mellichamp). The present form probably passed for a variety of P. macropus with earlier writers pro- vided it was observed by them at all. It was first noticed by Cooke from specimens col- lected by Peck, in Notes on Podisoma, and was referred by him to P. fuscwm Duby. In Peck’s Report for 1871, published in September, 1873, the species was also referred to P.- fuscum. It is very common in the Atlantic States on Juniperus virginiana, on which it forms globose knots resembling those made by G. macropus in some respects, but smaller and less striking. The mycelium is perennial and abounds in the stems and leaves. ‘The fungus, unlike G. macropus, does not break through the central part of the leaf, but bursts through the stem at the point of attachment of the leaves, and the knots formed do not assume the reniform outline so common even in the early stages of G. macro- pus, but are more nearly globose and on the surface. appear of a dark mahogany color, rather than silvery gray as in G. macropus. The knots grow comparatively slowly and last for several years, bearing several successive crops of spores. The sporiferous masses rupture the surface irregularly and they are not surrounded by so distinct a ring at the base as is the case in G. macropus. 'The gelatinous masses are broad and flattened at the 1Présence du Podisoma Juniperi Sabinae sur le Juniperus Vol. 25, p. 122. 1878. virginiana et sur divers autres Genévriers: Bull. Soc. Bot., OF THE UNITED STATES. 19 base and taper upwards, but are comparatively broad and flattened even at the apex. The scars left by the sporiferous masses of the previous year are distinctly visible between the bases of the newly formed masses. The knots seldom attain a great size and rarely exceed an inch in diameter. They usually appear to be terminal on the smaller branches, but sometimes they form nodes in the continuity of the branches., In course of time the surface of the knots becomes grayish and irregular by the action of the weather, but they are always more compact and harder than the knots of G. macropus. The leaves are not usually distorted by the fungus, but when the knots are large, the leaves on the upper branches above the knots become somewhat hypertrophied. What we have called variety globosum, is certainly common in the Eastern States. It often accompanies G!. macropus, and is in Eastern Massachusetts about as common as that species, and Mr. Peck states that it is still more common in the region of Albany. How far west the variety extends is unknown. The southern limit, as far as I can ascertain, is Bluffton, S. C., where it was collected by Dr. Mellichamp. Although often accompanying 7. macropus, and like it producing what are popularly called “ cedar apples,” there is no doubt that the present form is distinct from it as is shown by the fact that it is perennial and not annual, and by the very different character of the knots formed, and the appear- ance of the sporiferous masses. A very slight experience will enable any one to distin- guish between the two at sight. The only question which can arise is whether the fungus in question is distinct from G. fuscum, and on this point it is not so easy to give a decided answer. The variety, if indeed it be not a distinct species, differs entirely from the type in the character of the distortions produced on the same host-plant, J. virginiana, and it may be said with considerable truth that the same species of fungus could not produce two such different distortions in the branches of the same species of plant. The sporif- erous masses, however, are in shape and color much like those of G. fuscum, and the spores themselves, the size and shape of which, at the best, are variable even in the same species, although in general smaller than in G. fuscum, are not sufficiently distinct to allow one on the strength of their smaller size alone, to separate the fungus as a dis- tinct species. The question is, does not the smaller size of the spores in connection with the peculiar distortions caused by the fungus warrant one in regarding it as different from G. fuscum? I think it quite possible that the two are distinct, but am unwilling to speak positively without more information with regard to the mode of occurrence of G. fuscum on J. virginiana in Europe. So far as I know, however, the globose distortions are unknown in Europe, the only case known to me where a globose mass is figured, being in Cooke’s notes on Podisoma, Pl. 19, fig. 2, but it is not there stated whether the figure was drawn from a European or an American specimen. GYMNOSPORANGIUM BISEPTATUM Ellis. Pl. 2, figs. 18-21. Gymnosporangium biseptatum Ellis, in Bulletin of Torrey Club, Vol. v, p. 46, 1874; Far- low in Bull. Bussey Inst., Vol. um, p. 226; Vize in Grevillea, Vol. vit, p. 11; Harkness and Moore, Catalogue of the Pacific Coast Fungi, p. 25. Exsicc. Ellis, North American Fungi, Fasc. 11, No. 272. 20 FARLOW ON THE GYMNOSPORANGIA Sporiferous masses flattened and brownish when dry, becoming hemispherical or oval and rugose when swollen, and of a light yellow color, about a quarter of an inch high; spores linear-oblong, obtuse, two to six celled, most frequently three or four celled, 5(u—S4u long, by 15u-20u broad; promycelia one or two from each cell. Mycelium per- ennial, forming node-like swellings in the branches. On leaves and stems of Cupressus thuyoides, Newton, Dedham, Wood’s Holl, Mass. (Farlow) ; Newfield, N. J. (Ellis). On Libocedrus, Yosemite, Cal. (Harkness and Moore). A striking species first found by Mr. Ellis in New Jersey, and although only known apparently in a few localities it is probably common on Cupressus thuyoides throughout the Atlantic States. It often accompanies G. Ellisiit for which, however, it cannot pos- sibly be mistaken. As in that species the distortions produced by G. biseptatum can be seen ata considerable distance. The mycelium is perennial, and is found in the leaves and branches, principally in the latter. In the leaves the mycelium produces no perceptible distortion until the sporif erous masses appear. There is only one mass to a leaf, and it is first seen as a brownish elliptical protuberance emerging from the edge of the leaf. In the stem the distortions are marked and may be seen at a distance. The mycelium is found principally in the region of the cambium, and oval or oblong swellings are formed from one to two inches long, the bark becomes distended and cracked, and the sporiferous masses are found in the fissures, at first in small pulvinate tufts which on swelling form shapeless masses of rather a light yellow. The swellings increase year by year, and at length become very marked, the fungus growing constantly outwards, and producing fresh crops of spores year after year. The swellings are sometimes found in the main trunk of the tree, and I have seen them more than a foot in diameter. However large they may become, the heart wood generally remains firm and hard, and does not become spongy and riddled with holes as is the case with the branches attacked by G. Eilisit, which on the whole is decidedly more injurious to the trees than G’. biseptatum. The spores of the present species are characterized by the great variability in the number of cells of which they are composed. The most usual number is three or four, two are rather common and occasionally there are as many as six. ‘The spores are rather stout and obtuse, and generally constricted at the septa. When mature and about to produce the promycelia it is usual for the different cells to separate from one another either wholly or in part, as is well shown in Pl. 2, fig. 20. The spores of the present species when fully grown are not easily mistaken for those of any other species, but the young tufts on the leaves often bear spores which are all, or nearly all, two-celled. I have received specimens from Mr. Ellis, with the fungus confined to the leaves, and it was diffi- cult to say to what species to refer it. Large sets of specimens collected at Newton, how- ever, show that while the young spots on the leaves may have principally two-celled spores, those on the smaller branches have about an equal proportion of two and three celled spores, and the still older spots have a large proportion of three-celled spores. In short, the variability is so great that without a large set of specimens, one would have difficulty in convincing himself that the extreme forms belonged to the same species. OF THE UNITED STATES. 21 Like G. Ellisii, the present species, although occurring in localities as remote as Massa- chusetts and California, is known in only a few localities, but where it occurs it is generally abundant. There can be no doubt whatever, in spite of the unusually large number of cells of which the spores are composed, that the species should be placed in Gymnosporangium, and the number of cells only goes to strengthen the view that Hama- spora cannot be kept as a distinct genus. GYMNOSPORANGIUM CLAVIPES Cooke and Peck. Podisoma gymnosporangium, var. clavipes C. and P., in Notes on Podisoma, 1871. Gymnosporangium clavipes C. and P. in Peck’s 25th Report, p. 89; Farlow, Bull. Bussey Inst., Vol. 1, p. 226; Exsicc. Ravenel’s Fungi Americani Exsiccati, No. 272. Podisoma Juniperi Herb. Curtis in part. Gymnosporangium sp. Herb. Curtis in part. Sporiferous masses subpyriform or irregularly globose becoming indefinitely expanded, reddish yellow when dry, orange when swollen, about a quarter of an inch high; spores broadly ovate, obtuse, two-celled, generally constricted at the septum ; pedicels broad, much swollen beneath the spores, 40u-60u long by 22u-358u broad; promycelia usually two or three from a cell, frequently produced from the apex of the cells. Mycelium perennial in the leaves and branches, producing nest-like distortions. On Juniperus virginiana. Eastern Massachusetts (Farlow); New York (Peck); New Jersey (Ellis); Pennsylvania (Michener) ; North Carolina (Curtis); South Carolina (Ravenel). One of the most unsightly species of the genus and certainly common in the Atlantic States from Massachusetts to Florida. The mycelium is abundant in the leaves and branches and produces peculiar distortions already referred to under G. macropus. The leaves swell to double their original size and become sharp pointed and rather spreading. The effect produced will be seen by comparing figs. 22 and 25 of Plate 2, where fig. 23 shows a twig with normal leaves, and 22 one attacked by G. clavipes. The branches are somewhat swollen and the branching of the affected ones becomes very dense, so that at a distance it appears as if there were bird’s-nests in the boughs. The branches are often distorted for a distance of a foot or a foot and a half. The sporiferous masses are very abundant on the leaves and branches. Those on the leaves appear at their bases where they are adherent to the stems. They are at first broadly obovate, but soon become either subpyriform or irregularly globose and much wrinkled, and after having been exposed to a few showers they become quite amorphous, and form discol- oured films on the leaves and branches. On the branches the sporiferous masses are very similar to those on the leaves, but they are rather larger and more irregular in shape. When young and dry, they often are reddish rather than brown, and lack the deep brown color generally seen in the early stages of other species. The mycelium is apparently perennial, but I am not entirely certain on that point. 22 FARLOW ON THE GYMNOSPORANGIA The spores differ in several respects from those of the species already described. They are usually two-celled, but it is not at all unusual to find three cells, as is shown in Plate 2, fig. 25. They are broadly ovate, and attached to pedicels which, instead of being of nearly equal diameter throughout, as in the other species, are very much swollen just below the spores, in fact often more so than is shown in figs. 24 and 25. The breadth of the upper part of the pedicels, however, varies with the state of expansion of the spor- iferous masses, being especially broad when they are young, and slenderer when they are old. The base of the spores where the pedicels are attached is very broad, and when the masses are quickly swollen, especially by means of re-agents, the inner portion of the pedicels expands more rapidly than the outer part, and the latter is ruptured just below the spore, so that there is left a hyaline ring surrounding the pedicel at the base of the spore. . The growth of the promycelia is peculiar in G. clavipes. As a rule the promycelia of the other species are given off from the cells near the part where they are in contact with one another, and they are either single or double, or, as is very frequently the case, four are given off at diametrically opposite points. Occasionally one sees a promycelium form- ing at the apex of the spore, and such a case, occurring in G. macropus, is shown in Pl. 1, fig. 6. In G. elavipes it is very common for promycelia to be formed at the apex as shown in Pl. II, fig. 27, and another promycelium near the septum. The most peculiar form is that shown in fig. 26, where the spore has fallen from its pedicel, and a promycelium is produced both at the apex and the base. This form I have not found to be common, but it can be seen without difficulty. The present species, in spite of some striking peculiarities, presents a general resem- blance to G. conicum, which is common enough in Northern Europe, but is rare in this country, if indeed it occurs at all. G. clavipes was first separated from G. conicum in consequence of the swollen pedicels and the formation of promycelia at the apex ob- served by Peck. Curtis, judging from the specimens in his herbarium, did not distin- guish G. clavipes from Podisoma Juniperi Lk. which is the same as the G. fuscum of the present article, for the specimen of Michener No. 4830, from Pennsylvania, and a speci- men collected by Curtis himself at Hillsboro, N. C., certainly belong to G. clavipes. A - second specimen from Society Hill, 8. C., marked simply Gymnosporangium, also belongs to the present species. The question whether G. clavipes is merely a form of G. con- icum or not, is not easily answered. The general appearance of the sporiferous masses is the same, and if the distortions produced are different, it may be said that that may be accounted for by the fact that m Europe G. conicum grows on J. communis, while what we call G. clavipes grows on J. virginiana. The swollen pedicels, even admitting that the amount of the swelling varies in different specimens, has not been noticed in European specimens of G. conicum, and, although Oersted figures one spore in which the promycelium is given off from the tip in G. conicum, it seems nearly certain that no European species has the apical form of germination, unless exceptionally. Taking these facts collectively, I should think that G. clavipes was a distinct species peculiar to America, and that it was not quite certain that the true G. conicum occurs with us. A few forms which can hardly be included in G. clavipes, I should refer to G‘. conicum with a doubt. OF THE UNITED STATES. 23 GYMNOSPORANGIUM conrIcuM, De Cand. Gymnosporangium conicum D. C., Flore francaise, Vol. 1, p. 216; Reess, loc. cit., p. 26. Gymnosporangium Juniperi Lk., Obs. 1, p. 9; Species Plantarum, Vol. v1, part 2, p. 127; Schweinitz, Syn. Fung. Am. Bor., No. 5094; Berkeley, Outlines, Pl. 1, fig. 5; Curtis, Plants of North Carolina; Peck, in 25th Report; Frost, in Tuckerman’s Cat. Amherst Plants. Gymnosporangium juniperinum Fr., Syst. Mye., Vol. 11, p. 506; Exsicc. Ravenel, Fungi Carol., Fasc. v, 87. Podisoma juniperinum Oersted, Nouvelles Observations, 1866. Podisoma Gymnosporangium Cooke, Notes on Podisoma, Pl. 18, fig. 2. On Juniperus communis. Northern and Central Europe. On Juniperus virginiana, Newton, Mass. (Farlow); New York State (Peck); South Carolina (Ravenel). Sporiferous masses, subpyriform or indefinitely expanded, orange colored, half an inch high; spores oblong, two-celled, constricted at the septum, 45u—58u long, by 15u—18u broad; promycelia either two or four from each cell, given off near the septum. Mycelium perennial, forming long swellings in the branches. As before said, the determination of American specimens of the present species is very unsatisfactory. The name Gymnosporangium Juniperi Lk., to be sure, often appears in catalogues of American fungi, but in many cases the determination is evidently doubtful, and I have not thought best to accept it in several cases, but have formed my opinion rather on specimens actually collected by myself or belonging to authentic collections. In most instances the species is said to occur on Juniperus virginiana. In Tuckerman’s Catalogue of Amherst Plants, it is reported by Frost as growing on J. com- munis, but I have not been able to examine Frost’s specimens, which probably belong to the true G. conicum. In the Bulletin of the Minnesota Academy of Sciences for 1876, the species is said to have been found on living branches of various trees, a statement which is probably inaccurate, and tends to make the determination doubtful. As far as my own experience goes, I have only once found a form which was probably to be referred to G. conicum, and, in that case, the fungus was in such a condition that an accurate deter- mination was out of the question. Of all the specimens which I have examined, the No. 87, Fasc. v, of Ravenel’s Fung. Carol., and two specimens in Herb. Curtis, collected by Ravenel on the Santee Canal in 1848 and 1850, come nearest to the true G. conicum. There is also a specimen in the Sprague collection which may belong to this species. Without larger sets of specimens in good condition one can not well say whether the specimens referred to may not belong to other species. Most specimens marked G. Juni- pert Lk. which I have seen were gathered after the fungus had been exposed to the rain some time, and the only character by which one could be guided was the mode of germi- nation of the spores, which, as I have said is generally that found in G. clavipes, and I am not sure that all the so-called G. Juniperi recorded on J. virginiana is not to be referred to G. clavipes. More material and further study are necessary to settle that pot, and it is not impossible that some European botanist may discover that G. conicwn has at times the same swollen pedicels and apical germination as G. clavipes. If that turns out to be 24 FARLOW ON THE GYMNOSPORANGIA the case, our common G. clavipes must be regarded as a variety of G. Juniperi, but, as the matter now stands, I must believe that the two are distinct, and that the existence of G. conicum in the United States rests only on a few specimens resembling G. clavipes in habit, but which, as far as can be made out from specimens which as a whole are in poor condi- tion, have longer and slenderer spores on pedicels which are not perceptibly thickened below the spores, and whose promycelia are in twos or fours near the septum. RogEstTevtiA Rebent. Aecidia usually hypophyllous, lower part sunk in the swollen tissues of the leaves, form- ing, above, cylindrical, conical, or oblong projections which are often split and fringed in the upper part, peridium composed of large, colorless cells, spores brownish or orange- colored, subglobose when mature, formed in moniliform rows. Spermogonia punctiform, forming minute dark-colored pustules in discolored spots on the upper surface of the leaves. Mycelium infesting the leaves and stems of different Pomeae. The old genera Aecidium, Roestelia, and Peridermium cannot be distinguished from one another except in an arbitrary way. The species of Peridermium are parasitic on differ- ent Coniferae, the Roesteliae on species of Pomeae, and Aecidium proper is very widely diffused. Wolff! considers that Peridermium Pini is the aecidial form of Coleosporium Senecionis, and De Bary and Hartig have connected other Peridermia with Chrysomyxa aud Calyptospora. The Roesteliae differ from the species of Aecidium in the fact that the peridium is elongated in a more or less tubular form, whereas in Aecidium it is short. But in forms like R. penicillata (Sow.) the peridium is comparatively short, while in Aecidium Fraxini Schw. the peridium is so long that in the Syn. Fung. Am. Bor. it was placed by Schweinitz in Roestelia. In his work, Untersuchungen tiber die Brand- pilze, De Bary considered it to be a distinguishing mark of Roestelia that the spores were not formed from all the cells of the sporiferous filaments but from every other cell, so that the spores hung together for a short time by the shrivelled sterile cells. Reess adopts the same view, but more recently De Bary? has stated that similar sterile cells are found in other genera than Roestelia and they are certainly found in Caeoma luminata Schw. and in species of Aecidium which I have examined. The cells which form the peridium are, like those found in Aecidium, large and colorless, with thick walls which generally have peculiar markings. They are only loosely adherent, and although they may cohere to one another in longitudinal rows, the rows, especially at the upper end of the peridium, soon separate from one another and form a fringed mouth to the perid- ium. In some species, however, the cells at the apex remain united and those below sep- arate from one another so as to form a sort of lattice-work, through the meshes of which the spores escape. The spores of Roestelia are more or less angular, when young, from mutual pressure, but when mature they generally become globose. They are almost always of a brownish color, but in one of our species they are orange-colored. The wall of the spores is double, consisting of a rather thick endospore and a thin exospore. The endospore is perforated 1 Beitrag zur Kentniss der Schmarotzerpilze, Landwirthsch. 2 Bot. Zeit., 1869, p. 786. Jahrb., 1877. OF THE UNITED STATES. 25 with a number of holes, usually from five to ten, and it is through these holes that the ger- minal tubes protrude. Reess considers that the number of pores can be used as a means of distinguishing species, but my experience shows that the number is variable in the same species. The spermogonia are small and found in clusters in discolored spots on the upper surface of the leaves, where they are seen as brownish black dots. The spermatia are punctiform and are almost identical in all the species of the genus. The Roesteliae are very abundant on the leaves of our different thorns and fruit trees, and they are also found on the fruit. In some cases they cause distortions of the stems, which swell to twice their original size and become cracked and very irregular, or, if the ‘stems attacked are small and flexible they often become much recurved. The presence of members of this genus in the leaves is indicated by yellowish or reddish spots in which the spermogonia appear first on the upper surface, while the aecidia do not become visible until after a considerable interval in most cases. The amount of swelling produced in the leaves by the aecidia varies much in the different species. In some it is only slight, often in the form of a ring, but in others prominent ovoid or conical projections are found. The duration of the mycelium is a point of importance in considering the connection be- tween Roestelia and Gymnosporanguim. Certainly in some cases it seems to be perennial, but supposing that there is a genetic connection between the two genera just named, one would expect the Roesteliae to be annual products of the germinating sporidia of the differ- ent Gymnosporangia. The date of the appearance of the different species is also of import- ance in attempting to connect any particular Roestelia with a given species of Gymnospo- rangium. Some species, as £2. penicillata, mature in May and June, almost simultaneously with the Gymnosporangia, while other species, as R. botryapites, do not ripen until the middle of September or October. From an economical point of view, the Roesteliae are of considerable importance, since they attack the leaves of so many of our fruit trees, causing them to fall prematurely, and some of the species attack the yonng fruit as well as the leaves. The determination of the species from their anatomical structure is attended with many difficulties. The principal characters used are the gross appearance of the spots and swell- ings and the microscopic characters of the spores and the cells of the peridium. Too many species depend upon the amount of splitting of the peridium which evidently must depend to a large extent upon the age of the latter and accidental circumstances. The species of Roestelia are, moreover, not limited to a single host-plant, and one must nat- urally expect modifications of the swellings and of the peridium according as the Roestelia is parasitic on different hosts. ROESTELIA BOTRYAPITES Schw. Caeoma (Roestelia) botryapites Schweinitz, Syn. Fung. Am. Bor., No. 2902. Roestelia Ellisii Peck, Bull. Torrey Club, Vol. vu, p. 13. Exsicc. Mycoth. Univers., No. 431. Roestelia botryapites Schw., Berkeley in Grevillea, Vol. v, p. 34; Farlow, Bull. Bussey Inst., Vol. 11, p. 2265. Aecidia hypophyllous, borne in tuberculated or pyriform protuberances about an eighth of an inch high, sometimes solitary, usually densely aggregated or consolidated, 3-14, 26 FARLOW ON THE GYMNOSPORANGIA usually 7-8 together ; peridia cylindrical, contracted at the base, brownish-white, an eighth of an inch long, composed throughout of long, sinuous, smooth-walled cells, 12u—15u in diameter, which cohere at the apex and separate below in meshes so that the peridium is clathrate. Spores brownish, 15u-19u in diameter, epispore slightly granular, pores indis- tinct. Spermogonia few in number in the depressed upper part of the leaves. On the leaves of Amelanchier canadensis. Eastern Massachusetts (Farlow) ; Newfield, N. J. (Ellis); Bethlehem, Pa. (Schweinitz). A striking species which does not mature until the middle of September or the first of October, the spermogonia appearing in the latter part of August. It is distinguished from our other species by the large-sized tubercles which appear in dense clusters on the under surfaces of the leaves, from which protrude the long peridia which resemble those of FR. cancellata in having the cells coherent at the apex and separate below, so that the peridium becomes clathrate, the spores being discharged through the meshes. The peridia, how- ever, are less broad and bulging than in &. cancellata and the microscopic character of the cells is very different. In RR. botryapites they are longer and more slender than in any of our other species, and the cell-walls are destitute of the papillose or granular markings found in most of the species. They are also so sinuous and so long that an accurate meas- urement of their length is out of the question. The different cells, instead of overlapping at the extremities as in 22. cancellata, fit closely together, and the apical cells, instead of being shorter and broader than those below as in the species last named, are of about the same breadth and shape throughout. In fact, so narrow and smooth are the cells and so closely are they united to one another at the extremities that, on seeing them for the first time under the microscope, one would be more likely to suppose them to be some brownish mycelium than a collection of peridial cells. The spores of &. botryapites are, on the average, smaller than those of our other species. The fungus forms reddish-yellow spots on the leaves of Amelanchier in which the spermogonia are developed in comparatively small numbers, and when the swollen masses of the leaf in which the aecidia are borne appear, the upper surface bearing the spermogonia becomes depressed. The tubercular masses are much contracted at the base, and when fully mature they drop from the leaves, only a small scar remaining. The cells of the tubercles abound in starch grains, in this respect resembling f. cancellata. The present species is very common in Eastern Massachusetts and has probably a wider range than one would infer from the very few recorded localities. It is frequently seen in entomological collections, and the large tubercles with their small bases certainly remind one more strongly of insect galls than the work of fungi, at least until the peridia have protruded. The Schweinitzian species remained for a long time obscure, but it was redis- covered by Ellis at Newfield, N. J., and named by Peck G. Hilisii. Berkeley is quoted in Grevillea, loc. cit., as having ascertained the identity of the two species from the examina- tion of an original specimen of Schweinitz. There is a specimen from Schweinitz in Herb. Curtis, but the peridia and spores are not mature. As far, however, as can be judged from its present condition, it seems to be the same as specimens collected by Ellis. OF THE UNITED STATES. PATS ROESTELIA TRANSFORMANS Ellis. Roestelia transformans Ellis, Bull. Torrey Club, Vol. v, p. 3; Farlow, Bull. Bussey Inst., Vol. 1, p. 255. Exsicc. Thiimen, Mycoth. Univers., No. 1029. Aecidia hypophyllous, or covering the young shoots and fruit, borne in conical protub- erances, occasionally 3-4, generally 5-20 or more together, consolidated at the base ; perid- ium brownish-yellow, a tenth to a twelfth of an inch long, at first conical but soon becom- ing lacerated ; cells of peridium isodiametric at apex, below long and narrow, 12u-15u in diameter, not overlapping on the inner side, cell-wall papillose ; spores globose, brownish, 18u-22u in diameter, cell-wall nearly smooth. Spermogonia few in number in purplish- red spots on the upper side of the leaves. On the leaves, fruit and young shoots of Pyrus arbutifolia and on the leaves of Pyrus malus. Newfield, N. J. (Ellis); Newton, Gloucester, Wood’s Holl, Mass. (Farlow). This species, which occupies an intermediate position between R. botryapites and R. cancellata, is common on Pyrus arbutifolia in Eastern Massachusetts. It occurs in three forms. On the leaves it forms purplish-red spots and the aecidia are generally compara- tively few in number and rather slender. On the fruit they are more numerous and shorter, and when the fungus is found on the young shoots they swell to several times their original size, and become much curved and twisted and take on a yellow color. The number of aecidia produced on the stems is very large. The aecidial protuberances are rather acutely conical and more slender than in either &. botryapites or PR. cancellata ; they readily fall from the leaves as in the first-named species. It is only in the young con- dition that the cells of the peridia cohere at the apex, and, as generally seen, the peridia are lacerate. The peridial cells resemble those of &. cancellata but are more slender and do not project inwards. The spores resemble those of L. botryapites. What seems to me the same species was collected on apple leaves near the Bussey Insti- tution, Jamaica Plain, Mass., but did not seem to be common. The species is probably common near the sea-shore, but is actually recorded in but few places. It is not likely to escape observation wherever it occurs for the purple spots on the leaves and the distorted shoots are very striking. ROESTELIA CANCELLATA Rebent. Roestelia cancellata Rebent, Fl. Neom., p. 350, Pl. u, fig. 9; Curtis, List of Plants of North Carolina, p. 123; Oersted, Om en saeregen, etc., Pl. 1 and m1; Reess, loc. cit., p. 20; Decades of Maine Fungi, p. 180; Grevillea, Vol. v, p. 151. Aecidium cancellatum Schweinitz, Syn. Fung. Carol., No. 433. Caeoma roestelites Lk., Spec. Plant., Vol. v1, part 2, p. 164; Schweinitz, Syn. Fung. Am. Bor., No. 2900. Aecidia usually hypophyllous, borne in the swollen tuberculated substance of the leaves, consolidated at the base in clusters of 4-20 ; peridia yellowish-white, a twelfth to an eighth 28 FARLOW ON THE GYMNOSPORANGIA of an inch long, broadly ovate, acute and closed at the apex, clathrate below ; peridial cells thick-walled, surface papillose, isodiametric, about 58u, coherent at the apex of peridium, below united in longitudinal rows; cells about 20u thick by 60u—80u long, the upper end of each cell projecting inwards and overlapping the base of the cell above ; spores brown- ish, roundish-angular, 25u to 30u in diameter, cell wall thick, pores well marked. Sper- mogonia numerous in the discolored upper surface of the leaves. On leaves of apple and pear trees. Westbrook, Me. (Bolles); Bethlehem, Pa. (Schweinitz); North Carolina (Curtis) ; California (Harkness). Europe. The typical 2. cancellata is common in Europe and is easily distinguished. It has been published in several series of exsiccati of which I need only mention Libert, No. 394, and Thiimen, Mycoth. Univers., No. 537, where the specimens are very characteristic. The aeci- dia are borne in swollen parts of the under surface of the leaves, but the swellings are by no means so large as those of 2. botryapites and they are broad at the base, not constricted as in the last-named species. Although the peridium bears some resemblance to that of R. botryapites and FR. transformans, it is distinct in having the upper end of the cells pro- longed inwards in the form of a papilla. The peridial cells are quite different from those of LR. botryapites but resemble more closely those of FR. transformans. ~ LR. cancellata must be considered a rare species in the United States as far as at present known. It is only known in doubtful cases in Eastern Massachusetts and it is not enumerated by Peck among the Roesteliae of New York. The fungus mentioned under the name of L. cancel- lata in Bull. Bussey Inst., Vol. un, p. 225, does not seem to me really to be that species. The only specimens which I have examined of the Aecidium cancellatum of the Syn. Fung. Car. Sup. and of Caeoma roestelites Syn. Fung. Am. Bor., were in poor condition, and certainly were not typical &. cancellata, and although mentioned in Curtis’s list as occurring in North Carolina, there are no specimens in Herb. Curtis to mark the locality. Considering that the species is easily recognized from European specimens, there would probably be no difficulty in recognizing it if it occurred with us. One thing is certain, that the very common Roestelia found on apples in the autumn in Eastern Massachusetts is not R. cancellata. The present species is generally found on the leaves only, but is said also to attack the smaller branches. ROESTELIA CORNUTA (Ehrh.) Fr. Aecidium cornutum Pers. in Gmel. Syst. Nat. Caeoma cylindrites Link, Species Plantarum, Vol. v1, part 2, p. 64, in part; Schweinitz in Syn. Fung. Am. Bor., in part? Roestelia cornuta Fr., Summa Veget. Scand., Vol. m1, p. 510; Oersted, Nouvelles Observ., Pl. iv; Reess, loc. cit., p. 28; Peck, 24th Report; Farlow, Bull. Bussey Inst., Vol. u, p. 225; Tuckerman’s Plants of Amherst. Ceratitium cornutum Rabenh., Bot. Zeit., 1851, 452. Centridium sp. Chevallier, Desmaziéres, et al. OF THE UNITED STATES. 29 Aecidia hypophyllous, in pulvinate, orange-colored thickenings of the leaves, densely agglomerated, 10-40 together, often arranged in a circle ; peridia yellowish-brown, cylindrical-acute, recurved, generally entire but when old becoming fimbriate; peridial cells large, polygonal, coherent throughout, thick-walled, 38u—15u broad by 58u—76w long ; spores yellowish-brown, surface slightly papillose, roundish-angular, 18u—22u in diameter ; spermogonia numerous in reddish-yellow spots on the surface of the leaves. On the leaves of Pyrus americana, Amelanchier canadensis, Crataegus sp. Eastport, Maine (Farlow); Amherst, Mass. (Frost); New York (Peck); Ithaca, N. Y. (Dudley). Northern and Central Europe. This species in its typical form is common on the leaves of Pyrus americana at East- port. The spots on the leaves are of a brilliant reddish-yellow color, the spermogonia very numerous and the aecidia crowded together in a circle, the swelling of the leaf being in the form of a circular elevation and not at all tubercular as in the preceding species. The peridia are long and recurved and preserve their shape for a considerable time, be- coming at length lacerate. In this, its typical form, it is more robust than R. lacerata, and the peridial cells are broader and thicker. The form which occurs on Amelanchier has fewer aecidia in a cluster, the substance of the leaf around their bases is more dis- tinctly tubercular, and the peridia are shorter and more acute than in the form on the mountain ash, approaching, perhaps, 2. lacerata. The occurrence of R. cornuta on species of Crataegus in the United States possibly requires confirmation. I have speci- mens on C. crus-galli which may perhaps be referred to R. cornuta but am not certain. None of the Schweinitzian specimens of Caeoma cylindrites which I have examined seem to belong to the present species, but possibly some of the varieties mentioned under that head in the Syn. Fung. Am. Bor. may be placed here. ROESTELIA LACERATA (Sow.) Fr. Aecidium oxyacanthae Pers., Syn., 206. Aecidium Mespili and oxyacanthae D.C., Flore francaise, Vol. v1, p. 98. Aecidium laceratum Sow., British Fungi, Pl. 318. Exsicc. Ravenel, Fungi Carol., Fase. Ve 20: Aecidium crataegi var. oxyacanthae Schweinitz, Syn. Fung. Car. Sup., No. 432. Caeoma cylindrites var. Crataegi punctatae, var. arborescentis and var. C. oxyacanthae Schweinitz, Syn. Fung. Am. Bor., No. 2899. Roestelia lacerata Fr., ‘Suan Weret Scand., Vol. m1, p. 510; Sprague, Contrib. to New England Mycol., p. 329; Decades of Maine Fungi, p. 180; Pecks 22d and 24th Reports ; Farlow, Bull. Bussey Inst., Vol. 11, p. 255; Tuckerman, Plants of Amherst; Harkness and Moore. Aecidia hypophyllous, sometimes on the stems and young fruit, seated on the yellow pulvinate thickening of the leaves, slender, cylindrical or somewhat subulate, recurved, densely clustered, 5-30 together; peridia yellowish-white, rather delicate, soon splitting and becoming fimbriate, the divisions not extending to the base of peridium; cells of peridium narrow, 20u broad by 55u—75u long ; spores brownish, roundish-oblong, surface 30 FARLOW ON THE GYMNOSPORANGIA finely granulated, 19u-24u in diameter. Spermogonia in yellowish spots on the upper surface of the leaves. On leaves, stems, and fruit of Crataegus crus-galli, C. punctata, C. coccinea, C. tomen- tosa, O. oxyacantha, and other species; on leaves and fruit of Amelanchier canadensis, and on leaves of wild and cultivated apples. Common from Maine (Bolles) to South Carolina (Mellichamp), and west to Missouri (Engelmann). This is decidedly the most common species found with us, and it abounds on all wild and cultivated species of Crataegus and apples. On the one hand the species approaches PR. cornuta, from which it is distinguished by being more slender, and when young, splitting into segments which become fimbriate, and by the narrower peridial cells. On the other hand, it approaches ?. penicillata with which, in fact, it is united by some authors. Te: lacerata is more variable than most of our species, and I can distinguish the following forms. On C. tomentosa and other species of Crataegus the aecidia are borne on small, slightly swollen spots, and the peridia are large and diverge from one another. Our form is precisely the No. 556 of Westendorp and Wallys. The form on Amelanchier is the Aecidium Mespili D.C., and the swellings of the leaves are more strongly marked, and the peridia shorter than in the form last described. Our smallest form is found on apple leaves. The spots are bright yellow and the aecidia are few in number, often only 1-3, and occupy the centre of the spot. Possibly this last form might be separated as a dis- tinct species. It is, apparently, not the variety Mali of the Syn. Fung. Am. Bor. The specimen in Mycotheca Universalis, No. 732, collected by Ellis at Newfield, N. J., labelled R. lacerata, f. Mali, is said by Von Thiimen to be synonymous with Aecidium cancella- tum of the Syn. Fung. Carol. Sup., but on what authority the statement rests is uncertain. ROESTELIA PENICILLATA (Sow.) Fr. Aecidium penicillatum Pers., in Gmel. Syst. Aecidium Mali Schum., FI. Saell., Vol. 11, 222. Aecidium laceratum D. C., Flore Francaise, Vol. v1, p. 98. Caeoma cylindrites, var. Mali Schweinitz, Syn. Fung. Am. Bor., No. 2899. Aecidium pyratum Schweinitz, Syn. Fung. Am. Bor., No. 2896. Roestelia penicillata (Sow.) Fr., Summa Veget. Scand., Vol. m1, p. 510. Ceratitium penicillatum Rabenh., Bot. Zeit., 1851. 452. On leaves and fruit of Pyrus malus and Pyrus angustifolia and fruit of Amelanchier canadensis. Eastern Massachusetts (Farlow); Santee Canal, 8. C. (Ravenel). Same as P. lacerata, but aecidia smaller and frequently concentrically arranged, peridia splitting to the base, the divisions very numerous, revolute, fimbriate, formed of one or more rows of cells. The present species, if indeed it is not a form of the one last described, does not appear in American Catalogues as distinct from &. lacerata. It is not uncommon and seems to OF THE UNITED STATES. 31 attack the fruit more frequently than F. lacerata. The Aecidium pyratum of Schweinitz, Syn. Fung. Am. Bor., is probably the same as FR. penicillata. I am indebted to the officers of the Academy of Natural Sciences of Philadelphia for the privilege of examining the original specimen in their collection and I have also specimens from Ravenel and Curtis which do not differ from the type. Although it is unusual to find F. penicillata on Crataegus in this country, what seems undoubtedly that species was collected by Prof. W. R. Dudley on C. crus-galli at Ithaca, New York. ROESTELIA HYALINA Cooke. Roestelia hyalina Cooke, in Bull. Bot. Soc., 1877, pp. 314, 315; Hedwigia, Vol. xvn, p. 38; Grevillea, Vol. v1, p. 137. Exsicc. Ravenel, Fungi Americani, No. 37. Aecidia hypophyllous, borne few together in subpyriform tubercules ; peridia pointed, cylindrical, delicate, splitting longitudinally ; peridial cells rhombic-ovate, about 35u broad by 55u long, cell-walls thin, nearly smooth ; spores globose, 19u—22u in diameter. Spermo- gonia few, in yellowish spots on the upper surface of the leaves. On leaves of Crataegus. Aiken, 8. C. (Ravenel). This species is only known to me by the single small specimen in the Fungi Ameri- cani Exsiccati, from which the description above given was taken. The specimen bears a close resemblance to some forms of R. Jacerata, but the cells of the peridium are thin walled and destitute of the markings generally seen in the other species. The spores in my specimen are distinctly brownish and not orange colored as given in the description in Hedwigia, loc. cit. As it may be that there was an error in distribution, I quote the origi- nal description. ‘Epiphylla, vel amphigena. Maculis rufis. Soris convexis brunneis. Pseudoperidis cylindrico-acuminatis, longitudinaliter et unilateraliter dehiscentibus. Spo- ris globosis, aurantiacis, .02-.022 mm.” ROESTELIA AURANTIACA Peck. Roestelia aurantiaca Peck, in 25th Report, p. 64, Pl. 1, figs. 10-12; Bull. Buffalo Soc. Nat. Sci., Vol. 1, p. 68; Tuckerman’s Plants of Amherst ; Farlow, Bull. Bussey Inst., Vol. u, p. 225. Exsicc. Ravenel’s Fungi Americani, No. 217. Roestelia lacerata Herb. Curtis in part. Aecidia densely aggregated on the young fruit and swollen stems; periuia erecu or slightly recurved, an eighth to a quarter of an inch in length, cylindrical, tubular, shining white, coarsely toothed at the apex, teeth seldom extending more than a quarter of the length of the peridium; cells of peridium squarish-ovate, closely united, about 55) long by 36u broad, cell wall very thick and striate. Spores bright orange, spherical or slightly angular, 27u to 47u in diameter, average 30u—40u, cell wall thick, punctate, pores distinct. Spermogonia in discolored spots on the leaves. 32 FARLOW ON THE GYMNOSPORANGIA On unripe fruit and stems of Crataegus crus-galli, C. punctata, C. oxyacantha and other species of Crataegus, on Amelanchier canadensis and on cultivated quinces and apples. Not rare from Massachusetts (Farlow), Vermont (Frost), New York (Peck), to North Carolina (Curtis), South Carolina (Ravenel), and Missouri (Engelmann). By far the most beautiful species of the genus which we have, at once attracting the popular eye by its brilliant orange or almost cinnabar colored spores and shining white peridium. It is generally found on the young fruit, though it is occasionally found on the stems and petioles, but I do not recollect having seen aecidia on the leaves. What I take to be spermogonia of this species are found on the leaves apart from the aecidia. f. aurantiaca is often accompanied by R. lacerata, but one cannot consider the former to be a form of the latter, which grows on the fruit rather than leaves, for the differences in the spores and cells of the peridium are too marked to warrant any such supposition. The peridia of the present species are more rigid than those of our other species, and the cells cohere throughout, except at the tip where the peridium splits into comparatively few short teeth, and does not become lacerate or penicillate as in most of the species. The spores are large for the genus Roestelia, and instead of the brownish tinge common in other species, they are bright orange. The cell-wall is quite thick and striate. In drying, the spores become pale, but their size and cell-wall even then are sufficient to distinguish present from other species. R. aurantiaca is represented in Herb. Curtis by several specimens, including some col- lected by himself in North Carolina. He apparently considered them all forms of £. lac- erata, at least, they are so labelled. The species is particularly apt to attack the different species of Crataegus, and the peridia attain a large size on the small berries of that genus. It is reported by Peck to occur on Amelanchier, but I have never myself seen it on that host. Perhaps the most striking form is that which is often found on quinces in Eastern Massachusetts. I have collected specimens in Newton and I have received others from Pepperell, Miss Freeman; and from near Salem, Mr. Robinson; and there are specimens in Herb. Curtis and the Sprague collection from Mr. John Russell. One sometimes sees a quince two inches in diameter more than half covered by the bright orange aecidia and occasionally small apples are affected in a similar way. . aurantiaca is generally found in midsummer, I have, however, seen it on C. crus-galli as late as October. After the preceding detailed account of the species of Gymnosporangium and Roestelia of the United States, one naturally wishes to know how far the view first promulgated by Oersted is confirmed by cultures made with American species. Oersted recognized three species of Gymnosporangium, and, at first, four species of Roestelia growing in Denmark. He was afterwards induced to believe that two of the supposed Roesteliae, R. Jacerata and R. penicillata, were only forms of a single species, and he considered that he had proved that G@. fuscum was connected with R. cancellata; G. clavariaeforme with R. lacerata, including in that the form &. penicillata; and G. conicum with R. cornuta. Thus, there were no superfluous species of either genus in Denmark, that is, there was no species of one genus which could not be matched with a species of the other genus. OF THE UNITED STATES. 53 From the account already given, it will be seen that I recognize the following species, and the question which I have unsuccessfully tried to answer is, what species with us are genetically connected. To sum up the species, we have: GYMNOSPORANGIUM. ROESTELIA. G. Ellisii. R. botryapites. G. clavariaeforme. RK. transformans. G. macropus. R. cancellata. 7. fuscum. RF. cornuta. G. fuscum var. globosum. R. lacerta. G. biseptatum. ~ BR. penicillata. G. clavipes. R. hyalina. G. conicum ? RR. aurantiaca. It will be seen that I have mentioned eight species of each genus which could on anatomical grounds alone be considered distinct. Of the species enumerated, G. conicum is given as doubtful, because it seemed to me that sufficiently abundant material was want- ing to enable any one to speak with certainty. G. fuscwm var. globosum, it will also be borne in mind, is not by several writers considered distinct. With the possible exception of the two species just mentionéd, the validity of the species of Gymnosporangium is not likely to be much questioned. Turning to the Roesteliae, we have RF. lacerata and R. penicillata enumerated, which are by many writers united on anatomical grounds, apart from any developmental considerations, and f. cancellata, a species whose presence, or, perhaps better, whose distribution in the United States is not sufficiently well known in my opinion. In speaking of &. lacerata, also, one must not forget that, even in the lim- ited sense in which I have adopted it, it appears under a good many different forms which some botanists on anatomical grounds alone might consider distinct. If one is disposed to admit the eight species of each genus with the limitations I have given, he might suppose that the task of tracing the connection between them would be comparatively simple and interesting. A very slight experience, however, would con- vince him of the contrary. In the first place, if we accept the conclusions of Oersted as correct with regard to the Danish species, knowing that two and perhaps all three of the Danish Gymnosporangia are found in the United States, we are struck with the fact that, although G. fuscum, regarding var. globosum as distinct, and the true &. cancellata, its supposed aecidial form, are about equally common, or rather equally rare, with us, when we come to G. clavariaeforme, the case is different, for the Gymnosporangium is not at all common, while its presumed aecidium, 2. lacerata, is very common, indeed being found hundreds and even a thousand miles from localities where G. clavariaeforme is known. About the comparative distribution of G. conicum, and its corresponding F. cornuta, little can at present be said, since the localities of G. conicum are not well known. Yet, in general, what is supposed to be G. conicum is best known towards the South, while RR. cornuta is northern in its range, unless, indeed, that species properly includes some of the forms now included in R. lacerata. Wf, on the other hand, with some writers we regard the var. globosum as identical with G. fuscum of Europe we are, in looking at the distribution, met with the difficulty that G@. fuscum var. globosum is very common in Mas- sachusetts, for instance, whereas its supposed aecidium, R. cancellata, is not known with 34 FARLOW ON THE GYMNOSPORANGIA certainty to occur at all, and where, at least, the common Roestelia on apple leaves is cer- tainly not R. cancellata. At first sight, then, we would not admit the correctness of Oersted’s views with regard to particular species without further inquiry, and one naturally resorts to artificial cultures. These may consist in sowing the germinating sporidia of the different species of Gymno- sporangium either on leaves of different Pomeae, kept moist under bell-glasses, or on the young plants themselves. The former mode is more convenient, but has this objection that, although after sowing sporidia on the leaves spermogonia may appear in from about eight days to a fortnight, yet the interval is so great between the production of sperm- ogonia and the development of the aecidia, from which alone the species can be with cer- tainty determined, that the leaves, kept in a moist place, are almost sure to be destroyed by moulds before the aecidia have developed. Cultures made with the young plants themselves permit the development of the aecidia, but for mechanical reasons they are less easy to manage, and one is also obliged to keep a series of plants on which no sowing has been made, in order to make it comparatively sure that the mycelium of the Roestelia was not in the plants before the cultures began. I have, as a rule, made use of leaves only because the amount of space at my control was limited, and because it was difficult for me to procure young plants of some of the species required for cultures. The season of the year when the subject must necessarily be studied, the latter part of the spring, is, moreover, one when numerous occupations prevent my devoting as much of my time to the cultures as I should like. In the spring of 1875, I procured two plants of Amelanchier canadensis about a foot high, and sowed upon the leaves the sporidia of G. macrogus which were seen by micro- scopic examination to be in good condition. Nothing resulted from it. Iwas led to begin with this experiment because the most striking Gymnosporangium in the region of Boston is G. macropus, and one of the most prominent Roesteliae is 2. botryapites which grows only on Amelanchier, and both species are peculiar to America. Since 1875 I have repeatedly made attempts by cultures to demonstrate the connection between our different species. The species with which I have experimented are G. macropus, G. fuscum var. globosum,' G. Ellisii, G. biseptatum, and G’. clavipes, all common near Boston. I. May, 1876. G. clavipes sown on 6 Amelanchier leaves. No result. G. Ellisii on 6 apple leaves, three Amelanchier leaves, and two leaves of Crataegus tomentosa. No result. G. macropus on 3 leaves of Crataegus tomentosa, 6 apple leaves, 4 Amelanchier leaves. Spermogonia formed on one leaf of C. tomentosa. G. globosum on 3 leaves of Crataegus tomentosa, 3 of Amelanchier, and 3 of apple. Spermogonia appeared on all the leaves of Crataegus. II. May, 1876. G. macropus on two small pear seedlings. No result. G. globosum on one young plant of Crataegus oxyacantha. No result. Ill. June, 1876. G. globosum on 5 leaves of Crataegus tomentosa. No result. G. macropus on 3 leaves of Amelanchier. No result. 1 For sake of brevity this form is given under the name of G. globosum in the following tables. OF THE UNITED STATES. 35 G. clavipes on 3 leaves of Amelanchier. No result. Nore. The cultures of 1876 were made at the laboratory of the Bussey Institution. Those made in June continued only 17 days, but no result being then obtained the laboratory was closed for the season. IV. May, 1877. G. macropus on 3 leaves of apple, 3 of Amelanchier, 3 of Crataegus tomentosa, and 3 of Pyrus arbutifolia. Spermogonia appeared on one leaf of Amelanchier and one of C. tomentosa in ten days. G. globosum on 3 leaves of apple, 3 of Amelanchier, 3 of Crataegus tomentosa, and 5 of Pyrus arbutifolia. Spermogonia appeared on ali the leaves of Crataegus. G. biseptatum on 3 leaves of Crataegus tomentosa, 5 of apple, 3 of Amelanchier, and 5 of Pyrus arbutifolia. Spermogonia appeared on one leaf of Crataegus in six days. G. Ellisii on 3 leaves of apple and 3 of Amelanchier. No result. Nore. The cultures of 1877 were made at the Bussey Institution, and lasted from May 25th to July 4th. V. June, 1878. G. macropus on 3 apple leaves, 5 of Crataegus oxyacantha, 3 of C. crus-galli, and 3 of pear. No result. G. Ellisii on 3 apple, 3 pear, 3 C. oxyacantha and 3 C. crus-galli leaves. No result. G. biseptatum on 3 apple, 5 pear, 3 C. oxyacantha and 3 C. crus-galli leaves. No result. G. globosum on 3 pear, 5 C. oxyacantha, 5 C. crus-galli, and 1 apple leaf. No result. Vi. G. Ellisii on two pear seedlings and on two young plants of C. tomentosa. No result. G. macropus on an apple seedling and 2 plants of C. tomentosa. No result. Being absent from Cambridge in 1879, no cultures were made, and the cultures of 1880 present no result worth detailmg, as no spermogonia were produced. In reviewing the record given above, one is struck with the small number of cases in which spermogonia succeeded the sowings on the different Pomeae. Certainly a sufficient variety of leaves was selected, for it is on Amelanchier, Crataegus, Pyrus arbutifolia, and cultivated apples and pears that the greater part of our Roesteliae are found in nature. That the sporidia used were in good condition was shown by microscopical examination. In running over the list, it is seen that the only plants on which spermogonia were pro- duced were Crataegus tomentosa and Amelanchier canadensis. Those on Amelanchier followed the sowing of the spores of G. macropus, but, inasmuch as three species of Roes- telia are known on that plant, it is impossible to say to which the spermogonia belonged. What is surprising, however, is that of the three species of Gymnosporangium which were followed by spermogonia on C. tomentosa, viz.: G. macropus, G. globosum, and G. biseptatum, not one is the species which, according to Oersted, ought to produce our com- mon form on C. tomentosa, namely RR. lacerata. Accepting his view one would hardly have been led to expect spermogonia on such a host plant from three species so distinct from G. clavariaeforme. Further, we are not allowed to suppose that the production of spermogonia on C. tomentosa indicates any close resemblance between the three different Gymnosporangia. It might, perhaps, be said, considering how much more frequently the spermogonia followed the sowing of G. globoswm than of the other two species, that where the spermogonia appeared to follow the latter, it was really because some of the 36 FARLOW ON THE GYMNOSPORANGIA sporidia of G. globosum had become mixed with those of the two other species. Such a supposition is possible in the case of G. macropus which often grows in company with G. globosum, but it can hardly be true of the G. biseptatum in question, which grew in a deep swamp remote from G. globoswm, and the specimens of which were collected and covered with care to prevent a mixing of the spores with those of other species. Whether we consider the distribution of our species or the results of the cultures made, there is nothing to confirm the views of Oersted as to the connection of particular species. In this connection, I would refer to a paper by Rathay known to me only by the abstract given by Magnus in Bot. Zeit., 1880, p. 798. The method of culture adopted by R&thay is unknown to me, but he came to the conclusion that PR. penicillata belonged not as a form of R. lacerata to G. clavariaeforme, but to G. fuscum. If then our G. fuscum var. globo- sum be really a variety of G. fuscum, and if R. penicillata be a form of R. cancellata as supposed by Rathay, then the spermogonia on C. tomentosa, which so frequently followed the sowing of the sporidia of G. globosum, might be supposed to belong to what I have called L?. penicillata, which does occur on Crataegus in the United States. One could not be at all certain, however, without seeing the fully developed aecidia, but it must not be forgotten that thove who are fully imbued with the belief that the different aecidial genera as Aecidium, Roestelia, etc., are stages of Puccinia, Gymnosporangium, ete., accept the ap- pearance of spermogonia alone, without having seen the aecidia, as strong proof of a con- nection between different forms. In fact the imstances where the aecidia themselves have been produced by cultures of teleutospore forms are very few in number. But even if we admit that the spermogonia following the sowing of G'. fuscum belonged to R. penicillata, what are we to say of those which followed the sowing of G. macropus and G’. bisepta- tum? It is absolutely impossible to consider G. biseptatum a form of G. fuscum, nor, in my opinion, is there any reason to suppose that G. macropus is a form of that species. Spermogonia followed sowings of G. macropus on both C. tomentosa and Amelanchier, and accordingly they might have belonged to R. lacerata or R. aurantiaca. R. cornuta may be excluded as belonging, according to Oersted, to G. conicwm, which is not in the least related to G. macropus, and the distribution of #. hyalina makes it very improbable that it is connected with the ubiquitous G. macropus. R. lacerata should be connected with G. clavariaeforme and, as has already been remarked, Schroeter has suspected that G. macropus may be a form of the last named species, but I have already stated my rea- sons on structural grounds for not considering them two forms of the same species, and I do not think that that belief should be altered in consequence of the results of my cultures. There remains then f. aurantiaca which might possibly be connected with G. macropus. The case of G. biseptatum is still more desperate. It certainly cannot be connected with R. penicillata, or R. lacerata, and if we assume it probable or even possible that there is a connection between G. macropus and R. aurantiaca, there is only left R. cor- nuta to be matched with G. biseptatum, and this would imply that G. conicum and G. biseptatum were forms of the same species, which I presume that few botanists are willing to admit, for excellent anatomical reasons. The reader has probably in the last few pages been surfeited with if’s and or’s, and a choice of rather bewildering alternatives. There is only one more point to be suggested in this connection. That is, that the appearance of the spermogonia after sowing the OF THE UNITED STATES. 37 sporidia of the three Gymnosporangia in question, was in consequence of the presence beforehand, in the leaves, of the mycelium of some Roestelia which was made to develop by the moist condition in which it was placed. I am strongly inclined to favor this view, because in many cases I have from the beginning had my suspicions that the leaves of Crataegus tomentosa used might contain the mycelium of a Roestelia. R. lacerata is so common in the region about Boston at just about the date of the maturity of the Gymnosporangia that it has been with great difficulty, at times, that I have procured leaves of C. tomentosa which appeared even to the naked eye to be free from the fungus. In some cases pots of the young Crataegus used as control plants, showed a growth of spermogonia without any sowing at all, and it was necessary to reject from the cultures all the pots in consequence of the suspicion which was attached to them. In one case, furthermore, spermogonia appeared on a leaf on the fourth day after sowing, a suspiciously early date, unless one supposes that the mycelium was already in the leaf at the time of sowing. Again, why was it that, with abundance of fresh spor- idia of all our common species, in only one instance did spermogonia develop on any other leaves than those of C. tomentosa? The same pains were taken in sowing, the same care was exercised during the continuance of the cultures, yet in spite of that, sperm- ogonia were only produced, one case excepted, on C. tomentosa, the very plant of all used whose leaves were in some cases doubtful, and produced, too, by three different Gymno- spordngia, none of which is the species supposed by Oersted to be connected with R. lacerata, our common Roestelia on Crataegus. There is only one thing, viz.: the com- parative frequency with which the spermogonia followed sowings of G. globosum, that prevents my expressing a strong belief that the results of my cultures indicate that the Roesteliae in question were originally in the leaves used, and did not follow as secondary stages of the Gymnosporangia experimented upon. It must be admitted that the accuracy of Oersted’s views with regard to the development of the three Danish species is not so generally acknowledged at the present day as it was a few years ago, and the note of Reess on R&R. penicillata, and Rathay’s recent observations, show that even if Oersted isin general correct in supposing that the Roesteliae are genetically connected with the Gym- nosporangia, he has certainly failed to show the connection in the case of given species. Much may be said on both sides of the question of the relations between the so-called aecidial and final forms, but in this paper I have only considered the two comparatively small genera Roestelia and Gymnosporangium. Much more work remains to be done in this country. In the first place, more extended and accurate knowledge of the distribu- tion of our species is to be desired, and many more cultures must be made. 7 PVE, a 10 7 yar t ‘ nx 4. : 7 < . = . « A als < ‘ 4 “ye 5 ’ : $ . 5 " 7 3 — 4 , ia ba , v ‘ . - 4 ; ~ 5 . = 7 r a . . ; - v2 . ell \Y . . « i . ; , -* ~ 7 fh . ; a fh se aan . i a oF by, : : ‘ . . 7 = “ é r 4 ’ 5 ; : : i Tie cs » ¥ 4 * . = : : 7 3 . ¥ : . ; i 5 * - - . , ¥ 2 eee (ere cae ey ‘ oe ‘ aS ; ° Fi , we ; ny p f i, “onl oe . . Fond 7 . es * = oe ws : ‘ . MI - . i: , py re ig ’ ‘ in & 1 2 - cae ek, * * 24» . Mae : y : , - : wt pi ‘ 4 ! ss ‘ oe ( a he t : 7 ved AG hes * . K bf : 4 ar "S:. PACKARD, Jr., MD. BOSTON: PUBLISHED BY THE SOCIETY. Tue Anatomy, HistoLogy anp EmpBryoLocy or Limutus PoLypHemus. By A. S. Pacxarp, Jr., M.D. SINCE the publication of my first paper on the development of the horse-shoe or king crab (Limulus polyphemus), in the Memoirs of this Society,’ I have, as opportunity allowed, made additional observations on the development of the larva, and also on the histology of the different organs, and especially the brain. In making the microscopic sections of the embryos and for a series of sections of a brain, the latter of which were unstained, I am indebted to Professor T. D. Biscoe. For mounting some of these sections for study, I am indebted to Dr. C. B. Johnson of Providence, R. L, who also kindly cut, stained, and mounted preparations of the digestive canal. Within the past year I again returned to a study of the brain, using the methods of staining employed by German observers, Dietl and Krieger, also by Mr. E. T. Newton. The sections of the brain were cut and stained, as also those of the eyes, parts of the stomach and rectum, kidneys and liver, ete., by Mr. Norman N. Mason, of Providence, R. L, who kindly devoted a great deal of time to the work. To his unusual skill and delicacy of manipulation, I am indebted for a large number of préparations much better than I could have made myself, and which have been of most essential aid in preparing this paper; so that portions of the histological part of this paper, especially that on the structure of the eyes, are really joint productions with Mr. Mason, as we together examined the preparations. Position oF LimuLus AMONG ARTHROPODA. The researches of M. Alphonse Milne-Edwards on the anatomy of Limulus, proved that this animal, so far from being a genuine normal crustacean, is either the type of a group equal to all the other Crustacea, namely a sub-class of Branchiata; or, as several authors contend, should be regarded as the representative of a distinct class of Arthropoda. Before arguing what we now believe to be the true position of Limulus and the allied fossil forms, including the Trilobites, let us take a review of the different opinions of the leading zoologists who have done special work on the animal. The titles of their work will be found in the bibliographical list at the end of this paper. 1 Memoirs Bost. Soc. Nat. Hist., 11, 155-202. 4 A. §. PACKARD, JR., ON THE ANATOMY Straus-Diirckheim was the first author to remove the genus Limulus from the Crustacea, and to regard it as the type of a distinct order of Arachnida, which he called Gnathopodes. In his memoir, published in 1829, according to Van der Hoeven’s statement, Straus characterized the Arachnida by the disposition of the feet arranged in a circle around an interior cartilaginous sternum, and by the absence of antennae. Van der Hoeven, in 1838, remarks that the branchiae are the principal characters of Crustacea, as insisted upon by Latreille and Milne-Edwards, who placed Limulus in this class ; therefore Limulus should belong with these animals, and he shows that there are other characters which separate Limulus from the Arachnida, and which ally them with the Crustacea. These are the compound eyes, the position of the stomach in the front of the cephalothorax, “while it is contained in the abdomen of Arachnida.’ He then says: “But whether we place the Limuli among the Crustacea, or with the Arachnida, they should always form a distinct order for themselves alone, which, in the actual state of our knowledge, is far from all the other orders of these two classes.” Afterwards, in 1846, in his Handbook of Zoology, and again in the second, English edition of 1856, he placed the Poecilopoda as the first order of Crustacea, referring, however, to their resemblance to Arachnida. In 1871, Dr. A. Dohrn, in his Untersuchungen iiber den Bau und Entwicklung der Arthropoden, concluded that Limulus, Eurypterida and Trilobita should be united un- der a common name, Gigantostraka, as originally proposed by Haeckel, in his Mor- phologie, for the Eurypterida alone; and that they should be placed near the Crus- tacea. Most if not all the other leading zoologists, while recognizing the aberrant characters of the Limuli, have left them among the Crustacea, though in 1834 H. Milne-Edwards established a subclass (Xiphosura) for the group; this group being equivalent to any one of several other subclasses of Crustacea which he enumerates. For the views we held previous to the publication of H. Milne-Edwards’ memoir, we would refer the reader to our Memoir on the development of Limulus, published in March, 1872. In October, 1871, the following views of M. Edouard Van Beneden! were published : “Tétude du développement embryonnaire de ces animaux et de leurs caractéres anatomiques m’a conduit aux conclusions suivantes que je puis formuler dés 4 présent : I. Les Limules ne sont pas des Crustacés; ils n’ont rien de commun avec les Phyllopodes, et leur développement embryonnaire présente les plus grandes analogies avec celui des Scorpions et des autres Arachnides, dont on ne peut les séparer. Dans le cours de leur développement embryonnaire, on ne distingue aucune des phases caractéristiques du développement des Crustacés, et il ne peut étre question de distinguer dans le cours de ce développement embryonnaire, ni phase nauplienne, ni phase cyclopéenne. II. L’analogie entre les Limules et les Trilobites, et laffinité qui relie entre eux ces deux groupes, ne peut é6tre un instant douteuse pour celui qui a étudié le développement embryonnaire de ces animaux. Les lois de développement sont les mémes chez les Trilobites et les Xiphosures, et lanalogie entre les jeunes Trilobites et 1 Journal de Zoologie. Par Paul Gervais. Tom. I, p. 42, 1872. Paris. AND EMBRYOLOGY OF LIMULUS. 5 les jeunes Limules est d’autant plus grande, qu’on les considére 4 une époque moins avancée de leur développement. A l’examen de jeunes Limules, MM. Packard et Woodward ont été frappés de ces analogies. III. Les Trilobites, aussi bien que les Euryptérides que les Poecilopodes, doivent étre séparés de la classe des Crustacés et former avec les Scorpionides et les autres Arachnides un rameau & part, dont lorigine est encore 4 déterminer.”’ In November, 1872, A. Milne-Edwards, in his beautiful memoir on the anatomy of Limulus, claimed that the central nervous system resembled that of Arachnida, and was surrounded by arterial coats, and that the brain supplied no limbs with nerves. His con- clusions are stated in the following extracts: “ L’aprés les faits que je viens de passer en revue, on voit que le systéme nerveux de la Limule différe beaucoup de celui de tout autre animal articulé, et resemble moins a celui des Arachnides qu’a celui des Crustacés. Chez les premiers, les ganglions cephalothoraciques sont tellement serrés entre eux que le pertuis ménagé au milieu du collier cesophagien, pour le passage du tube alimentaire est d’une petitesse extréme, et qu’en arriére de cette masse médullaire, les deux moitiés de la chaine nerveuse sont réunies entre elles dans toute leur longeur, au lieu d’étre attachées lune a lautre par des commissures ganglionnaires seulement. Chez les Crustacés, on rencontre souvent une disposition analogue 4 celle des Limules. Mais la coalescence des ganglions cérébroides et des ganglions postbuccaux n'est jamais portée aussi loin, et c’est en général entre ces deux systémes des centres nerveux que les connectifs sont le plus allongés. Chez les Limules, au contraire, ces connectifs sont remarquablement courts, tandis que ceux situés a la partie antérieure de la région abdominale sont fort longs. Il est aussi & noter que le systeme ganglionnaire viscéral, dont M. Blanchard a tiré des caractéres anatomiques pour la distinction des Insectes, comparés aux Myriopodes et aux Arachnides, présente chez les Limules une disposition qui n’a encore été obsérvé nulle part ailleurs. Ces particularités anatomiques viennent done & lappui de l’opinion que j’ai déja émise, relativement a la nécessité de séparer ces animaux des autres Articulés, et d’en former une classe particuliére, sous le nom de Merostomata, classe trés-voisine, d’ailleurs, des Arachnides.” He then states, in considering the external anatomy, that it is not only by their internal organization that the Limuli differ from the Crustacea and approach the Arachnides, without, however, being confounded with them ; for there are also in the general conform- ation of the Merostomata and the Scorpions, resemblances which seem to indicate in all these Entomozoa a community of primordial type. The external characters which separate the Limuli from all other articulated animals are the absence of any preoral appendages, Milne-Edwards having shown that the nerves to the first pair of feet do not arise, as Van der Hoeven and Owen claim, from the brain, but from the oesophageal collar. To use Edwards’ own words: “J’eu conclus que, chez les Limules, il y a absence compléte d’appendices frontaux, et ce caractére les distingue des Arachnides aussi bien que de tous les autres animaux articulés de la période actuelle.” Finally, he remarks that if the Limuli are not Crustacea, neither are they Arachnida. “They are distinguished, the latter not only by their mode of respiration, but by the existence of compound eyes, the absence of frontal appendages, the continuous 6 A. 8S. PACKARD, JR... ON THE ANATOMY prolongation of the ventral appendages on the adjacent part of the abdomen, and by several other organic characters. They are distinguished from all other articulated animals by the disposition of their circulatory system, and consequently, in spite of the small number of species of this group, the zoologist should consider them as constituting a particular class intermediate between the Crustacea and Arachnida. He claims with Mr. H. Woodward, that the fossil Pterygoti and Eurypteri should be united with the Limuli, under the name of Merostomata. Milne-Edwards then adds that “the Merostomata were contemporaries of the Trilobites, and there seems to be between these two groups, not only very strong resemblances, but intermediate forms which establish the passage from one to the other. Some authors: have thought it useful to unite them under a common name. This seems to me at least too premature, because we know nothing of significance on the subject of the appendicular system of Trilobites, and we cannot pronounce legitimately on this question ; but it should be taken into consideration, that it seems very probable that the Trilobites differ from the Crustacea properly so-called, as we have seen the Merostomata differ from them, and that they should likewise constitute a particular class in the great natural division of Entomozoa.” In November, 1873,) in the light of A. Milne-Edwards’ researches, I stated that “I should no longer feel warranted in associating Limulus and the Merostomata generally with the Branchiopoda, but regard them as perhaps forming with the Trilobites a distinct sub-class of Crustacea. In a second notice in the same Journal for December, 1879, I proposed the name Palaeocarida, for the sub-class; these comprising the Merostomata and Trilobites. We also proposed the term Neocarida for the remaining sub-class of normal Crustacea. In 1874 Gegenbaur, in his Grundriss der Vergl. Anatomie, divides the living Branchiata as opposed to the Arthropoda Tracheata, in two divisions: I. Crustacea, II. Poecilopoda.? As regards the relations of the Merostomata to the Arachnida let us examine them and inquire whether they are not rather those of analogy, than of affinity. It is not neces- sary, in view of what has been published, for us to restate the essential anatomical charac- teristics of Limulus. The relations of the viscera to the body wall, and of the appen- dages may be seen by our figures in Plates I and I. The resemblances to the Arachnida in general, and the scorpion in particular, have been supposed to consist (1) in the want of antennae, and (2) the form of the central nervous system, as well as (3) the mode of development, while (4) the branchiae of Limulus have been homologized with the pulmonary sacs of spiders. It should be borne in mind, however, that the Arachnida are a sub-class of Tracheata, with no antennae to be sure, but with two pairs of post-oral appendages, the mandibles and maxillae, which are constructed on the hexapodous type, and are also built upon the same plan of structure as the mouth-appendages of Myriopoda; so close indeed are the homologies between the Hexapoda, or insects proper, and the Arachnida and Myriopoda, 1 Farther observations on the embryolory of Limulus, Palaeocarida, and regard Gegenbaur’s Crustacea as equiv- with notes on its aflinitiess Amer. Naturalist, Novem- alent to my Neocarida; this would express my views as to ber, 1873. the relations of the two sub-classes. This makes the terms 2 If we substitute for the term Poecilopoda, which applies Crustacea and Branchiata synonyms trom my point of only to the sub-order of which Limulus is the type, the term view. AND EMYRYOLOGY OF LIMULUS. 7 all breathing by tracheae, excepting the few species which have no breathing organs at all, that it seems most advisable to retain them as sub-divisions or sub-classes of the class of insects or Tracheata. There is little in common between the mouth-parts of Limulus and those of the Arach- nida, either in their form or grouping; moreover, the mouth-parts of Limulus are not differentiated from the other cephalothoracic appendages. The six pairs are alike; morphologically true gnathopods; and in the embryo arise simultaneously ; in the Arach- nida, the two pairs of mouth-parts are, in adult life, quite different from the eight legs, and are soon differentiated in early embryonic life. Limulus resembles the Arachnida in the want of antennae, but so important are the differences in the mouth-organs and legs, that it seems a violation of the principles of classification to associate together the two types within the limits of the same class. The second Arachidan feature claimed by authors to exist in Limulus is the alleged similiarity in the form of the nervous system to that of the Arachnida, especially the scorpions and spiders. The oesophageal collar of the horse-shoe crab has been homolo- gized with the thoracic ganglionic mass of Arachnida, and the brain of Limulus has been likened to that of the spiders and of the scorpions. The brain of Arachnida has heretofore been supposed to be a single pair of ganglia, and to send nerves not only to the simple eyes, but also to the first pair of mouth appendages. If this view is correct, as all who have studied the adult Arachnids agree, then the brain of Limulus is not homologous with the arachnid brain (supra-oesophageal ganglion), as it sup- plies only the eyes, sending no nerves to the anterior gnathopods. As will be seen farther on (Plate 4, fig. 7 gn), the first pair of gnathopods is supplied in the larva directly from an independent pair of ganglia. Very recently, however, Mr. Balfour! has proved that the so-called supra-oesophageal ganglion or brain of the spider is formed of two pairs of ganglia which at first are quite distinct, as shown by his section of the embryo spider. Mr. Balfour concludes that “the evidence which I have got that the cheliceres are true postoral appendages, supplied in the embryo from a distinct postoral ganglion, confirms the conclusions of most previous investigators, and shows that these appendages are equiv- alent to the mandibles, or possibly the first pair of maxillae of other Tracheata.” In either case then, whether the brain of Arachnida is a single pair of ganglia, sup- plying the cheliceres (or mandibles), as well as the ocelli or two pairs of consolidated ganglia, the brain of these Arthropods can scarcely be homologous with the brain of Limulus. Moreover, the position of the brain in relation to the thoracic ganglionic mass of Arach- nida is quite different from that of Limulus; in the former animals, judging from Blanch- ard’s beautiful and accurate plates, and our own examination of the brain of the scorpion, it is invariably situated in a plane parallel to and much above the thoracic mass, and separated by long slender commissures; while the brain of Limulus is situated on the same plane as the oesophageal collar, in fact, closing up the front of what would otherwise be an open ring or collar. 1 Notes on the development of the Araneina. By F.M_ April, 1880, pp. 176, 185, 189, Pl. xxi., fig. 21. Balfour. Quarterly Journal of Microscopical Science, 8 A. 8. PACKARD, JR. ON THE ANATOMY The thoracic ganglionic mass of the Arachnida is likewise not homologous with the central cephalothoracic nervous system of Limulus. The thoracic mass in the former type sends off nerves to the maxillae, or second pair of mouth-appendages, and also to the four pair of limbs, and from this mass the abdomen, including the spinnerets (in our view morphologically limbs), is supplied with nerves; there being no ganglia in the abdomen of any spiders (Araneina) as yet known. On the contrary, the oesophageal collar of Limulus supplies the nerves for the six cephalothoraic appendages alone (and this seems strong proof that these gnathopods should be regarded as either mouth-parts alone, or partly mouth appendages, and partly thoracic appendages), while there is a chain of six ganglia in the abdomen. Here, however, it should be borne in mind that in the scorpions there is a chain of abdominal ganglia, so that in this respect there is an interesting analogy between Limulus and the Pedipalpi. So far, however, as concerns the brain and thoracic mass, there seems to be a lack of homology in the two types of nervous system of Limulus and Scorpio. In the mode of early development, Limulus resembles the Arachnida, but also in the embryonal membranes the insects, while it also recalls the development of certain Crus- tacea, notably Apus, as we attempted to show in our first memoir. The fourth point of comparison, ¢.e., between the gills of Limulus and the pulmonary branchiae of spiders seems far-fetched. The gills and mode of respiration of Limulus are thoroughly crustacean, the gills being certainly not homologues of the “lungs” of the air-breathing spiders, which are tracheal sacs, formed by modified tracheae, and opening externally by stigmata. From any point of view, developmental, anatomical or physiological, the relations of Limulus and its fossil allies to the Arachnida seem purely those of analogy, the fund- amental differences being such as characterize and separate the Tracheate from the Bran- chiate Arthropods; the differences are so fundamental as to suggest the idea that the two types probably had a different origin, 7. e. from some vermian ancestors. In order to epitomize the differences and resemblances between the Merostomata and Arachnida, we have prepared the following tabular view: CoMPARISON OF THE MEROSTOMATA WITH THE ARACHNIDA. Arachnida. Head in adult soldered to thorax. No compound eyes. No antennae or morphological equivalents. Mandibles on hexapodous type. Maxillae with a palpus, on hexapodous type. Four pairs of thoracie legs on hexapodous type. No functional abdominal legs, the spinnerets being, how- ever, modified legs. Digestive canal on hexapodous type with a voluminous liver, and urinary tubes. Brain formed of two pairs of ganglia supplying eyes and mandibles. Maxillae and thoracic legs supplied from a concentrated postoesophageal ganglionic mass. No abdominal ganglia in spiders, but present in scorpions. Merostomata (Limulus). Head separate from hind body. Compound eyes. No antennae or morphological equivalents. Only their morphological equivalents (gnathopods). “ “ee “ No true thoracic legs; the gnathopods representing the mouth-parts and possibly the thoracic legs. Six pairs of swimming respiratory legs, on the Crustacean type. Digestive canal on Crustacean type, with a voluminous liver, but no urinary tubes. Brain formed of a single pair of ganglia, supplying eyes alone, and free from the suboesophageal ganglion in embryo and adult. Gnathopods supplied from a concentrated ganglionic oeso- phageal ring. Six abdominal ganglia, much as in Crustacea. AND EMBRYOLOGY OF LIMULUS. 9 Turning now to the relations of the Merostomata to the normal Crustacea, we may inquire whether the former belong to the class of Crustacea, or should form the type of a distinct class. The latter view is that proposed by A. Milne-Edwards, and a number of zoologists have adopted this view. The facts that seem to us to poimt to the crustacean nature of Limulus and its allies are: (1) the nature of the branchiae, those of Limulus being developed in numerous plates overlapping each other on the second abdominal limbs; those of the Eurypterida being, accordmg to H. Woodward, attached side by side, like the teeth of a rake; while the mode of respiration, as seen on plate 1, is truly crustacean; (2) the resemblance of the cephalothorax of Limulus to that of Apus; (3) the general resemblance of the gnathopods to the feet of the Nauplius or larva of the Cirripedia and Copepoda; (4) the digestive tract is homologous throughout with that of Crustacea, particularly the Decapoda, there being no urinary tubes as in Tracheata; (5) the heart is on the crustacean type as much as on the tracheate type, and the internal reproductive organs (ovaries and testes) open externally, at the base of and in the limbs, much as in Crustacea. The resemblances and differences between the normal Crustacea (Neocarida) and the Palaeocarida (Merostomata and Trilobita) are shown in the following tabular view : — CompPARIsON OF NormMAL Crustacea (NEOCARIDA) WITH LIMULUS AND OTHER PALAEOCARIDA. Neocarida. Palaeocarida. Integument solid and calcareous, or thin and chitinous. Usually in higher forms a cephalothorax, but in Phyllo- pods no genuine cephalothorax distinct from the abdomen. Eyes of normal form, rods and cones present, but no cor- neal lenses. Two pairs of antennae. Mandibles normal. Maxillae normal. Maxillipeds normal. Gills on thoracic feet, or thoracic or abdominal feet them- selves broad and thin, and serving as gills. Abdominal feet biramous. Heart polygonal or tubular. Digestive canal with its three subdivisions of fore-, mid- and hind-gut. Nervous system with a brain sending nerves to the anten- Integument usually chitinous. Head and abdomen alone; no thorax except in trilobites. Eyes with no rods and cones, but corneal lenses. No antennae, either functional or morphological. No functional mandibles = gnathopods. No functional maxillae = enathopods. No functional maxillipeds = gnathopods. Gills on the abdominal feet. Abdominal feet biramous. Heart tubular, as in many Neocarida except Decapoda. Digestive canal homologous with that of most higher Crustacea. Nervous system with brain supplying eyes alone—first pair nae and eyes. Oviduct opening at base of middle thoracic feet ; male out- let at base of 5th thoracic feet. Metamorphosis often complete. Nauplius in some forms. Zoea in Decapods. of gnathopods supplied from oesophageal collar, in larva from suboesophageal ganglion. Oviduct and male outlet situated at base of first abdominal feet. Metamorphosis absent, or partial. No Nauplius. No Zoea. The difficulties which stand in the way of associating the Merostomata (throwing out the Trilobites for the sake of clearness of statement) with the Crustacea, are: (1) the nature of the limbs, and the absence of the pairs of antennae ; but it may be observed that in the undifferentiated gnathopods of Limulus we have a parallel in the larval 10 A, 8. PACKARD, JR, ON THE ANATOMY Cirripedia and Copepoda, where what ultimately become antennae and mandibles are swimming feet; and in the zoea of Decapods, in which two pairs of antennae exist, and the temporary swimming feet ultimately become maxillae and maxillipedes; (2) the unique relations of the inferior blood system to the central nervous system (the brain and certain nerves alone excepted); and (3) the peculiar nature of the eyes of the Meros- tomata and Trilobites, which are constituted on a type peculiar to themselves. Under all these circumstances, it may be claimed, as has been done by A. Milne- Edwards, that the Merostomata should form a distinct class of Arthropoda. It should be borne in mind, however, that M. A. Milne-Edwards believes that a second class of Arthropods should be formed to receive the Trilobites. Taking all the facts into consideration, we should propose that the Merostomata and Trilobites should together form a subclass of Crustacea (i. e., Branchiate Arthropods) standing parallel to, and as the equivalents of, all the other Crustacea, the two groups being parallel and equally important branches of the same genealogical tree. It should be borne in mind that the Palaeocarida are a generalized or synthetic type; Limulus is, so to speak, a subzoea, the cephalothorax having been differentiated from the abdomen and prematurely developed, with the gills of a normal crustacean; having the primitive appendages of a nauplius, and the compound eyes superficially like those of a zoea, but on an elementary, prematurely developed type; while the circulatory system is of a high order, and the nervous system well developed, though the brain is constituted on a simple plan, quite unlike that of the higher Crustacea, and probably the Crustacea in general. The subclass of Palaeocarida apparently bears very much the same relation to the subclass Neocarida, as the subclass Elasmobranchii or Ganoidea do to the Teleostean fishes; as in these early synthetic forms certain organs are prematurely developed, while the skeleton and other parts are in a more or less embryonic or larval condition. They abounded most in the Palaeozoic ages, dying out in part, with but a few survivors; such was the case with the Palaeocarida. Under these circumstances we see no more reason for removing the Merostomata and Trilobita from the class of Crustacea, than to consider the Elasmobranchii or Ganoids as independent classes of Vertebrates. or the Arachnids or Myriopoda, as independent classes of Arthopoda. Regarding, then, the Palaeocarida as an early offshoot of the Crustacean or Branchiate eaioned tree or stem, we would venture to present the classification on the followmg page, as proposed in 1879, in our little school book, “ Zoology The Neocarida may be characterized briefly as genuine Grenass with two pairs of antennae, biting mouth-parts and ambulatory or swimming thoracic feet ; mostly modern types. The Palaeocarida, on the other hand, have the cephalothoracic appendages in the form of foot-jaws, rather than true jaws; no antennae, the brain supplymg the compound eyes and ocelli alone; the nerves to the cephalothoracic appendages sent off from an oesophageal ring or collar; and the nervous system, with the exception of the brain, ensheathed in a ventral system of arteries; they are mostly palaeozoic types. The close homologies between the Merostomata and Trilobita were discussed in our first memoir. At that time (p. 184), we advocated the view that the cephalothoracic limbs of the Trilobites must have been jointed, rounded rather than foliaceous, and ambu- latory in function, and inclined to the views of Mr. Billings as to the nature of what he ” AND EMBRYOLOGY OF LIMULUS. 1 regarded the appendages of the Asaphus described by him in 1864. Since then the researches of Mr. C. D. Walcott’ on sections of Trilobites seems to have satisfactorily proved that Trilobites have rounded, jointed ambulatory appendages developed from the head and possibly from the thorax. His observations, though from the nature of the case in some respects imperfect, have set at rest the question as to whether these extinct Palaeocarida had rounded, jomted limbs, though much yet remains unproved as to the homologies of these limbs with those of the Merostomata. It also appears that the hard parts of the eyes of Trilobites are directly homologous with those of Limulus, as we attempt to show hereafter in this paper. : 8 is} S s iS Q S = 8 NK 3 S S SS) S Ny S Sy < > = 5 ~ S 3 Ry S ES = 3 § S 3 s 3 s 3 Sj 2 S = a] s= Ss) S S Ss :s < S ie) & S | SS SS NEOCARIDA, | PaLocaRiDA. oS EE Se ere eee coer | CRUSTACEA. As to the general homologies of the body of Limulus, it seems to us that the facts presented further on confirm the position we have always taken, i. ¢., that there are no true antennae in Limulus; that the gnathopods are mostly modified mouth- parts, the last pair possibly representing a pair of thoracic feet; that the fore region of the body corresponds to the cephalothorax of the Decapoda or of a Preliminary notice of the Discovery of Natatory and on some sections of Trilobites from the Trenton Limestone, Branchial appendages of Trilobites, and additional evidence Sept. 20, 1877. See also Ann. Rep. N. Y. Mus. Nat. Hist., upon the same. Twenty-eighth Annual Report, New York March, 1879. State Museum of Natural History, December, 1876. Notes 12 A. 8. PACKARD, JR, ON THE ANATOMY Nebalia, and that the posterior region is truly an abdomen, the spine of Limulus being simply the last body-segment, or ninth abdominal arthromere, as the history of the embryonic development of this segment proves. It then follows that the abdominal respiratory feet are, for example, homologues of the broad respiratory abdominal appendages of Isopoda. The view of Mr. Woodward, that what we regard as abdomen represents in part the thorax, or the opinion of Owen and Huxley that the spine represents the abdomen, and that what we call the abdomen is the thorax, in part at least, is, it seems to us, not based on sound induction. Histotocy or THE INTERNAL ORGANS oF THE ADULT LIMULUS. Histology of the digestive system. The general form of the digestive canal is seen in plate 3, fig. 1. The large mouth-opening is situated between the third to fifth pairs of limbs. The oesophagus is very long, and directed very obliquely forward and upwards from the mouth, entering the large crop or proventriculus at an angle to the general course of the latter, which is full and large, projecting anteriorly over the end of the oesophagus. It curves over backwards, growing smaller posteriorly, projecting above slightly over the beginning of the stomach or mid-gut. What we call the crop, is the “cardia” of Van der Hoeven, and the “cardiac end of the stomach” of Owen and A. Milne-Edwards. Communication with the chyle-stomach is effected by the large internal projection in the form of a truncated cone (plate 3, fig. 1, cone), by which the food, when partially digested, is strained, and passes from the proventriculus into the true stomach. The latter, externally, seems to form the beginning of the intestine, and extends from the base of the proventricular projection backwards as far as the first pair of biliary ducts; its histology is quite different from that of the proventriculus and its posterior conical process. The beginning of the intestine is indicated externally by a slight contraction just before the origin of the anterior of the two pairs of biliary ducts. These are placed far apart by a distance nearly equal to twice the thickness of the intestine. The hind gut is divided into the intestine and rectum. The intestine is straight, and of uniform thickness as far as the beginning of the rectum, which is swollen, owing to the large rectal folds within, On laying open the digestive canal of specimens collected in the winter, it is found to be filled with a jelly-like substance, which on examination proves to be the lining of the canal, which has been molted, and has undergone partial digestion. Examining the inner walls of the digestive canal, and studying its histology, we find that there are three fundamental layers composing the canal, extending from the mouth to, the vent. There are, beginning on the outside, (1) the muscular layer, (2) the mucous or epithelial layer, and (3) the chitinous layer. The muscular layer is made up of longitudinal muscles, the fibres striated, with scattered small bundles of transverse striated fibres, some of these isolated from the outer layer of longitudinal muscles and passing through the epithelial tissue. The second or epithelial layer is thick, composed of pavement epithelium, arranged in fibrous masses or bundles, somewhat like muscular tissue.” The nuclei are large and AND EMBRYOLOGY OF LIMULUS. 13 conspicuous where the preparations have been stained with haematoxylin ;! the cell walls are difficult to distinguish with a one-fifth objective. The pavement epithelium fills the spaces between the folds of the oesophagus and crop (or fore gut), and is succeeded by a single layer of columnar epithelium, which looks like a delicate ruffle, edging the folds, and lying between the pavement epithelium and the chitinous lining of the canal. The chitinous layer is very finely laminated, the laminae being parallel for the most part to the indentations and projections of the folds and the teeth of the fore-gut, showing plainly that it is secreted by the layer of columnar epithelium. Cross sections of the larva, after hatching, through the fore-, mid-, and hind-eut, when the appendages and internal organs have assumed their definite shape, show that the intestine then consists of only two layers, the muscular, which is comparatively thin, and the layer of columnar epithelium (plate 5, figs. 7, 7a), which rests directly upon the muscular layer, and consists of long cells projecting irregularly into the cavity of the canal. It would thus appear that the thick layer of pavement epithelium and of chitine is not developed throughout the intestine, until some time after hatching. Indeed, it is known that the larva lives for a long time, even months, after hatching, before it takes much, if any, food. Returning to the oesophagus; it is seen to be lined with a pale yellowish chitinous layer gathered into about eight large deep folds. Plate 5, fig. 5, illustrates the structure of two of these folds and part of the adjoining ones. The muscular fibres are not represented. The cells 4, 4a, of the pavement epithelium (pe) are round or oval, with a large, distinct, dark nucleus; their walls are difficult to define. The projecting lobes con- sist of columnar epithelium, with large nuclei, much more distinct than in the pavement epithelium ; the basal half of the cells are dark, being filled compactly with granular mat- ter enclosing the nuclei, while on the outer half the cells are transparent; plate 5, fig. 3, 3a, represents these cells enlarged. The lobes are hollow, leaving a clear space, as shown in figure 5; the lobes are unequal in form and size, those figured being situated near the posterior end of the oesophagus. The columnar epithelium is succeeded by the chitinous layer (ch), which is finely laminated, the lamimae corresponding to the direction of the lobes. : The crop or proventriculus consists of three parts; in the most anterior division the chitinous folds, continuous with those of the oesophagus, are large and irregular and extend vertically upwards, until they bend backwards suddenly at right angles to form the rows of thick, solid teeth lining the second or middle and larger part of the crop. These teeth are arranged in five sets of rows, each set or series consisting of three rows, and two series of two rows, the two latter sets situated on the under or ventral side of the stomach, and arranged on each side of the three-rowed series. The teeth in each row are nearly uniform in size, are transverse, being flattened antero-posteriorly. In the three-rowed series, especially on the ventral side, the teeth of the middle of the three rows are larger than those of the row on each side. There are about 225 well marked teeth in this division of the crop, those at either end of the rows being small and sometimes double. 1T am much indebted to Dr. C. B. Johnson, of Providence, preparations of the oesophagus, crop, and intestines, stained for kindly cutting, staining, and mounting some excellent both with haematoxylin and carmine. 14 A. S. PACKARD, JR., ON THE ANATOMY The minute structure of the vertical folds of the first or anterior division of the crop may be seen at plate 5, figs. 1, 2, where the relations between the muscular, epithelial and chitinous layers are shown. The limits between the longitudinal striated muscular layer (m) and the epithelial layer are clear and well marked, the bundles of pavement epithelium (pe) running at right angles to and abutting directly on the muscular layer. The pavement epithelium is also, in slices stained with haematoxylin, clearly demarked from the columnar epithelium (ce) by its pale lilac tint, the latter staming brownish and contrasting well with the purple-stained chitine, which is finely laminated, the lines of deposition being waved, the points of the waves under a low power appearing like fine lines passing inward near but not quite to the free edge of the tooth, the margin of the chitinous layer remaining unstained and pale yellowish. Fig. 2 represents the small central tooth la, still more enlarged, showing the lines of growth of the chitin, and the ruffle of columnar epithelium, indicated by the row of large nuclei bordering the margin of the lobes of the columnar epithelium layer. In the teeth of the middle region, which as we said, number some 225, the columnar epithelium is wanting, though the corresponding tract is yet stained pale brown by haema- toxylin or deep crimson by carmine, but the cells are of the same nature as in the adjoin- ing pavement epithelium; it is also not scalloped, but the layer of chitine is much thicker than elsewhere in the digestive canal. The proventricular cone or tube has internally about thirteen unequal chitinous folds, continuous with and like those of the oesophagus, five large folds alternating with eight smaller ones. The folds are yellowish, and project ruffle-like at the end, contrasting in structure and color with the whitish exterior of the cone or strainer. An examination of the cellular structure of the interior lining of this tube, shows that it has a chitinous lining continuous with that of the crop, and which stops at the ruffle-like extremity of the tube; this chitinous layer is succeeded within by a ruffle-like layer of columnar epithelium, like that in the fore part of the crop. The chitin is entirely wanting in the papillose exterior of the tube, while the layer of columnar epithelium is deep, the cells being very long and slender. The structure, then, of this tube is externally like that of the stomach walls as described below, while internally it is histologically an extension of the structure of the oesophagus and proventriculus. The beginning of the mid-gut or true stomach, as we regard it, is lined internally with a layer of large, long, erect papillae which extends nearly as far as opposite the end of the strainer, and is also extended along the outside of this organ. Just before a point opposite the end of the strainer, this layer of dense close-set papillae suddenly stops, and is succeeded by a division of the digestive canal lying between the point opposite the end of the proventricular strainer, and a point situated a little before the opening of the first pair of biliary ducts. This region, which we regard as the true stomach, has the inner surface raised into about twelve transverse or circular folds. Just where this region of the digestive canal ends, it contracts, and this is judged to be the line of demarcation between the mid-gut and hind-gut, 7. e., the true stomach and the intestine. It should be observed that the chitinous folds of the oesophagus and proventricle (usually called stomach) are continuous, alike morphologically, and stop at the posterior end of the proventricular strainer. It is evident that the food, such as worms, at first partly torn by AND EMBRYOLOGY OF LIMULUS. 15 the teeth at the base of the limbs, is further triturated by the numerous hard teeth of the crop, while the more nutritious fluid portions strain through the narrow passage of the singular hollow cone. The inner walls of the stomach are destitute of chitin, the long, close-set, large papillae bemg edged with a thick layer of columnar epithelium. The twelve circular folds of pavement epithelium are also lined with a similar columnar epithelium. The four biliary ducts open into the intestine proper, which is lined as far as the rectal folds with an epithelial membrane, is divided by longitudinal and transverse lines into squares forming close-set, square, flattened papillae; on the posterior half of the intestine the longitudinal lines are more numerous than the transverse, the latter being partially obsolete, so that the imner surface of the intestine is gathered into fine longi- tudinal folds, the free edges of the folds being irregularly serrated. These folds consist of pavement epithelium (or mucous membrane), the free edges of which are of columnar epithelium, the cells being long and narrow, while the nuclei are not so large and distinct as in the proventricle. The intestine within suddenly contracts at the beginning of the rectum, but becomes larger posteriorly to the vent; the interior is thrown up suddenly into ten large folds of unequal size, which become smaller posteriorly. These rectal folds have the same muscular and epithelial layers as in the other parts of the digestive tract, but the cells of the pavement epithelium, instead of being uniformly round, are in places irregularly diamond or spindle-shaped, as in plate 5, fig. 6. The columnar epithelium of the rectal folds is lined externally (in the rectal cavity or lumen) with a lining of a clear, structure- less, somewhat chitinous membrane which stains purple with haematoxylin. It would thus appear that the secreting surface of the stomach-walls is, owing to these folds and large erect papillae, very much greater than in the intestine. We have seen that the stomach, like the intestine, lacks the chitinous lining, and this, together with the histological identity of structure between what we regard as the stomach and the intestine, may seem to some as opposed to the view that this region is the mid-gut, stomach or archenteron ; but the fact that it is divided from the intestine by a slight constriction, that it lies in front of the biliary ducts, and that the appearance and gross anatomy of the lining is unlike that of the intestine, coupled with the perfect continuity of structure in the oesophagus and proventricle, are to our mind sufficient arguments for the position we hold. Moreover in the lobster the two capacious biliary ducts empty directly into the true stomach or mid-gut, the small straight intestine beginning at some distance behind the origin of these ducts. Thus while the stomach and intestine of Limulus agree in the absence of the chitinous layer, the rectum in its longitudinal folds and lining of chitine repeats in a degree the structure of the oesophagus. Comparing the digestive canal of Limulus with that of the lobster or Decapodous Crustacea in general, we find that the oesophagus and so-called stomach (what we call in this paper crop or proventriculus), are continuous parts ; that the true mid-gut or stomach has, like the intestine, no chitinous lining, though the rectum of the lobster, as we find on examination, has long rectal folds (besides large square raised projections), and is through- out lined with chitine. There is thus a general correspondence or homology between the Decapodous and Merostomatous digestive or enteric canal. Unfortunately we have been 16 A. §8. PACKARD, JR. ON THE ANATOMY unable as yet to find any specimens of the young with the enteric canal in such an early stage of development as to throw any light on the morphology of the stomach.? z 8 Structure of the liver. The tubules of the liver spread everywhere through the cephalothorax, reaching almost to the edge of the retina of the eyes, and when cut through, show in sections, as at plate 3, figs. 9, 9a, 9b, a circular or oval layer of epithelium, surrounding a cavity more or less irregular in size and form. ‘The cells are quite large and filled with brownish granules, being dark at base and transparent towards the end where they project into the cavity. Plate 3, fig. 8, represents the end of a lobule from theliving horse-shoe crab. Com- pared with that of the lobster (plate 3, fig. 10), they are from one half to a third smaller, very much longer, more intestiniform, and contracted irregularly, while the pigment granules are thicker, and the entire mass is blackish-brown. Figs. 8a, 8b, 8c, represent the cells comprising the’ epithelium teased out and spherical in form. Fig. 8a, indicates a cell containmg smaller nucleated cells of two kinds, the smaller clear and yellow, the larger, darker and horn-colored; 8b, a clear, nucleated cell; 8c, represents dark, clear amber-colored cells filled with the secretion, and with the nucleus no darker than the rest of the cell, and very clear. For purposes of comparison we give figures (plate 3, fig. 10) of the end of a liver-lobule of the lobster, which is pale green, with numerous epithelial cells, a few oil globules being scattered through them. In the living lobules of a species of Panopaeus common in Buzzard’s Bay, some of the cells are colored yellowish-green, imparting the same color to the entire lobule; the cells in Pan- opaeus (plate 3, fig. 8d) are clear of granules, almost as much so as the fat globules. The lobules of the liver of this crab are larger, more conical and shorter than in the lobster. From this it will be seen that fundamentally both the general and minute structure of the liver of the Decapoda and Limulus is nearly identical. The glandular bodies supposed to be renal in their nature. These glands had remained undescribed, until in a paper read at the Philadelphia meeting of the National Academy of Sciences, held in November, 1874,? we drew attention to their occurrence and histological structure. Although we have nothing to add verbally to the account then given of the gross anatomy of these glands, we would refer to the figure (plate 3, fi. 7) illustrating the form, and the cells (plate 3, figs. 7a, 7b, 7c) composing these glands. They do not appear to have been described by Van der Hoeven, Owen, or A. Milne- Edwards, in their account of dissections of this animal. These glands are quite large, and apparently of some physiological importance, and are easily found, as they are conspicuous from their bright red color, causing them to contrast decidedly with the dark masses of the liver, and the yellowish ovary or greenish testes, near which they are situated. The glands are bilaterally symmetrical, one situated on each side of the proventricle and stomach, and each is entirely separate from its fellow. Each gland (plate 5, fig. 7) consists of a stolon- 1] have found in the crop (stomach) of a large Limulus In another, occurred an Edwardsia, still alive, and three oie. . n . . 7 » Leap > J oypie mre > several living spiny larvae of Homalomyia, and several dead — or four large Nereis virens. Tollennia gemma, mixed with bits of sea weed and Zostera. 2 American Naturalist, 1x, 511. September, 1875. AND EMBRYOLOGY OF LIMULUS. 17 like mass (a), extending along close to the great collective vein, and attached to it by irregular bands of connective tissue, which also hold the gland in place. From this horizontal mass, four vertical branches (b, 0) arise, and le between and next to the partitions at the base of the legs, which divide the latero-sternal region of the cephalothorax into compartments. The posterior of these four vertical lobes accompanies the middle hepatic vein from its origin from the great collective vein, and is sent off opposite the insertion of the fifth pair of feet. Halfway between the origin of the vein and the articulation of the limb to the body, it turns at a right angle, the ends of the two other lobes passing a little beyond it, and ends in a blind sac, less vertical than the others, slightly ascending at the end, which lies just above the insertion of the second pair of feet. The two middle lobes are directed to the collective vein. Each lobe is somewhat flattened out, and lies close to the posterior wall of the compartment in which it is situated, as if wedged in between the wall and the muscles between it and the anterior portion of the compartment. Each lobe also accompanies the bases of the first four tegumentary nerves. I could not by injection of the gland discover any general opening into the coelom or body cavity, or perceive any connection with the hepatic, or with the great collective vein. The four lobes end in blind saes, and have no lumen or central cavity. The lobes are irregular in form, appearing as if twisted and knotted, and with sheets and bands of connective tissue enclosing the muscles, among which the gland lies. Each lobe when cut-across, is oval, with a yellowish interior and a small central cavity. The gland externally is of a bright brick-red. The mass is quite dense, though yielding, and on this account hard to be cut with the microtome. When examined under Hartnack’s No. 9 immersion lens and Zentmayer’s B eye-piece, the reddish external cortical portion when teased out from the living animal, is seen to consist of closely aggregated, irregularly rounded, nucleated cells of quite unequal size ; and scattered about in the interstices between the cells, are dark reddish pigment masses (plate 3, fig. 7a) which give color to the gland. They are very irregular in size and form, and twenty hours after a portion of the living gland was submitted to microscopic examin- ation moved to and fro. In other portions of the outer reddish part of the gland, where the pigment masses are wanting, the mass is made up of fine granular cells, which have no nucleus. Other cells have a large nucleus filled with granules, and containing nucleoli. In the yellowish or medullary portion are scattered about very sparingly certain spherical cells which probably are purely secretory (plate 5, figs. 7b, 7c). The nucleus is very large and amber colored, with a clear nucleolus; others have no nucleolus, and the small ones are colorless. T am at a loss to think what these glands, with their active secreting cells filled with a yellowish fluid, can be, unless they are renal and excretory in their nature. In general position they coincide with that of the shell glands of the Entomostraca and Branchi- opoda, including the Phyllopoda, especially as worked out in Leptodora, by Weismann." But in lacking apparently an excretory duct, and in their dense parenchym, with no lumen, as well as histologically, they seem to differ from the shell glands of the lower 1 Ueber den Bau und Lebenserscheinungen von Leptodora hyalina. Zeitschr. fur wiss. Zoologie, Bd. xxrv. p. 385, 1874. 1 A. 8. PACKARD, JR. ON THE ANATOMY Crustacea, and the green glands of the Decapoda. It should be remembered, nevertheless, how difficult it is to find the excretory duct of the green gland, though its inlet is very apparent. It is probable that we have here to deal with a new form of kidney, adding a fourth kind to the three forms of renal organs existing in the Crustacea.! STRUCTURE OF THE Evers or LIMULUS. After we had made some researches on the structure of the compound eyes of Limulus, and had ascertained that their structure is quite unlike that of other Arthropodous eyes, having a chitinous lens and no rods and cones, we had the opportunity of examining Grenacher’s elaborate work entitled Untersuchungen jiber das Sehorgan der Arthropoden, insbesonderer der Spinnen, Insecten und Crustaceen? We have little to add to Grenacher’s account of the histology of the compound eye, and our studies confirm the accuracy of his account and the three drawings he publishes of the structure of the retinula and the rhabdom, although we have failed to find the layer of epithelial cells extending up between the corneal lenses and next to the pigment layer ; these are much less regular in their arrangement than drawn by Grenacher, and seem to be simply connective tissue cells, which are as abundant away from the lenses as next to them. We have also not succeeded in observing that the optic nerve fibres end in the manner indicated in his drawing. We may here say that we had examined sections of the compound eye of Limulus, and had made out the leading points in its structure before seeing Grenacher’s work. The following account is based upon observations made upon sections cut for us by Mr. Mason. They are taken in most cases from living specimens, placed in alcohol, and hardened in gum arabic ; and either stained with picro-carmine, or else the pigment layer dissolved wholly or in part with nitric acid in order to uncover the ends of the corneal lenses and to show the structure of the retinula and rhabdom. The subdivisions of the optic nerve were best showed in slices stained with picro-carmine, the nervous substance being but partially colored and contrasting well with the highly tinged connective tissue by which the nerves are surrounded. In order to study the eye of Limulus intelligently Mr. Mason kindly made for us numerous exquisite sections of the eye of the lobster.® Plate 6, fig. 1, represents an actual section of the eye, with its exterior convex surface, its lenses, retina and nerves. The surface of the eye is convex, smooth and polished. The integument over the eye suddenly diminishes in thickness to form the cornea ; it is solid and chitinous as in the rest of the integument, and is composed of three layers: the outer and thinner more solid one (1,), which is clear yellow or amber-colored ; the middle (1,), which is duller yellow and is finely laminated and softer, being partially 1 See Eug. Wassiliew. Ueber die Nieren des Flusskrebses. the optic nerve-fibres, so that the structure of the eye could Zoologischer Anzeiger, p. 221, 1878. readily be studied. We did not perceive that the anatomy 7Von H. Grenacher. Gottingen, 1879, 11 lith. taf. 40, of the eye of Homarus americanus differed in any important pp- 188. respect from that of the European lobster as worked out by ® These sections made by Mr. Mason were remarkably Mr. Edwin T. Newton. Quart. Journ. of Microscopical successful, the slices being thin enough to include a layer of Science, 1873, p. 339. hundreds of facets and rods and cones but one deep, with AND EMBRYOLOGY OF LIMULUS. 19 stained reddish by carmine ; and a third (1,) thicker layer, less laminated and pierced by nutritive canals (p), filled with connective tissue and directly communicating with the body cavity. From the cornea project obliquely inwards large, long, solid, conical processes (cl). These are the “ corneal lenses” of Grenacher, which he regards as homolo- gous with the corneal lenses of larval insects and of Arachnida. We see no reason to dissent from this opinion. These corneal lenses are long, cylindrical, obtusely pointed, sometimes quite sharp, at the end. They point inwards more or less obliquely towards the centre of the eye. Those (as at fig. 2a) near the periphery of the eye are longer and slenderer and more oblique than those in the centre, the latter being considerably shorter and blunter (plate 6, fig. 2). These lenses are developed from the third, a portion of the second or more laminated layer of the cornea filling up a conical space (fig. 2a, h,) at the base of the cone; the lamimae composing this shallow cone within the larger cone are continuous with the laminated layer of the cornea, and like it are stained reddish by the carmine, while the cone itself remains unstained, of a clear amber color, and is structureless ; sometimes one or two curved lines being seen parallel to the periphery of the end of the cone. That the corneal lens is solid is proved not only by its appearance, as seen in numerous sections, but by the frequent marks of the razor, and by the laminated structure of the mner conical portion. What relation, if any, the conical part (h) has physiologically to the corneal lens, we are not prepared to state. The terminal half, or sometimes third, of the corneal lens is enveloped in the pigment layer or retina, (plate 6, fig. 5, rt), which is morphologically a continuation or modification of the dark hypodermis (hy). The layer is continuous between the ends of the solid corneal lenses, but is produced at the ends of the latter into cones of corresponding size (rtc), which project into the body-cavity, and are enveloped by the dense connective tissue. As stated by Grenacher, this pigment layer is composed of modified epithelial cells, which are very long and slender, with a minute nucleus (fig. 38, rel). It is very difficult to make out these cells, and we should have overlooked them had not Grenacher described and figured them; finally, however, we could trace them, in preparations treated with acid, into the hypodermis, where the cells are also long and slender, though shorter than in the retina. Plate 6, fig. 3, rel, represents these retinal cells, as seen at the end of an acute corneal lens, and their relation to the rhabdom (rhab). Besides the retina, the soft parts of the entire compound eye of Limulus consists of a large mass of connective tissue (ct), lying under and next to the retina and finely gran- ular, permeated by the irregular tortuous branches of the optic nerve. The cells and granules of this specialized subocular portion of the connective tissue forming the paren- chyma of the cephalothorax are smaller than elsewhere; they are nucleated, and the tissue stains paler crimson by the picro-carmine, than the connective tissue beyond the subocular area, which remains darker brown, with coarser granules. The arteries, ovarian-tubes and liver-tubes, rarely penetrate into the subocular area; and the branches of the optic nerve do not wander into the region beyond. Fig. 1, av, represents the cut ends of two minute arterial branches, ov represents the cell-eggs of the end of an ovarian tube, and / indicates the much larger sections of a liver-tube; these vessels constitute the greater part of the soft portions of the cephalothorax, being brown or yellowish brown, and enveloped in a dense connective tissue. 20 A. S. PACKARD, JR., ON THE ANATOMY The subdivisions of the optic nerve can rarely be traced for a long distance contin- uously, owing to their irregular, tortuous course. In the drawing (fig. 1), I have delineated with the aid of the camera lucida an actual section; the clear spaces indicate the cut portions of the nerves distributed to each corneal lens. Histologically they present the same appearance as the nerve-fibres in the brain, those given off from the lower ganglionic cells. Under a low power (4 inch), they appear to be structureless ; under a } they are seen to be finely granulated. After repeated search I could find no nuclei in these fibres; nor were there any ganglion cells to be discovered. Repeated exam- inations of numerous sections treated in different ways, have convinced me that there are throughout the subocular area no ganglion cells, such as are characteristic of the eyes of spiders and myriopods ; hence, with Grenacher, we may state that a ganglion opticum is entirely wanting in Limulus ; the irregular, tortuous subdivisions of the optic nerve are sent directly to the corneal lenses. Coming now to the structure of the individual eye, or facet in the compound eye, we find that its anatomy is just as described by Grenacher, except that we have been led to doubt the existence of the layer of triangular (in outline) cells, which he represents as extending up between the conical corneal lenses, and it should be borne in mind that we examined eyes taken directly from living Limuli, as well as specimens that had been preserved in alcohol for several years. Grenacher’s researches were made on eyes pre- served for a long time in specimens of Limuli obtained from German museums, and his material was so poor that he did not attempt to study the simple eyes (ocelli). The structure of the cone of pigment matter enclosing and extending beyond the end of the conical line has been described and illustrated in a masterly manner by Grenacher. Impinging on the end of the conical lens, and extending through the centre of the conical mass is a twelve-radiate semi-solid body, called by Grenacher the rhabdom, and which he apparently homologises with the rhabdom or spindle-shaped body, suceeeding the rod of the ordinary Crustacean eye. Along a part of its length, this rhabdom (fig. 4, rhab) is enveloped by the retinula (plate 6, fig. 4, ret). Our figures show in sections the rhabdom, with its central axis and twelve or thirteen rays, forming a rosette extending into the substance of the retinula. That the retinula is, as Grenacher figures, composed of as many large cells as there are rays of the rhabdom, we have proved by preparations treated with acid, as seen in fig. 4, a. How the optic nerve is connected with or impinges on the rhabdom, we have been unable to ascertain. We have only seen enough to convince us that the nerve reaches the end of the rhabdom, but the nature of the ending is unknown to us. The nerves, as seen in our drawing, fig. 1, sometimes appear as if they ran by the end of the retinal cones, and extended up between the corneal lenses. On the other hand, we have seen very plainly the mode of termination of the nerve in the ocellus. Grenacher, however, states that “a number of the nerve-fibres are distributed to each single-eye [facet], they diverge behind it, and I have repeatedly traced clearly the entrance of a fibre into the axial part of a retinula cell.” Grenacher concludes that perception in the typical Arthropod eye is performed accord- ing to the mosaic theory of Miiller, and that this applies to the eye of Limulus, although the eye of the latter is morphologically wholly different from the eyes of any other animal. AND EMBRYOLOGY OF LIMULUS. Dall a According to Grenacher, the conical lenses are not homologues of the crystalline lenses of other Arthropods, and the eye of Limulus cannot, he holds, be compared with the eyes of any other Arthropoda. There can be, he claims, no genetic connection between the eye of Limulus and those of any other Arthropods, and the two types of eye, i.e., those of Limulus and all other Arthropods, agree only in the fact that they are compound. Among the Arachnida, he states, one may seek in vain for such an isolated type of eye. He adds: * But it is not only possible but also probable, that the Poecilopoda are related by their eyes to Myriopoda. In Cermatia, the eyes are wholly unlike those of the spiders or insects, and they seem to have something in common with those of Limulus.” We shall see further on, however, that the type of eye of Cermatia is not fundamentally unlike that of Bothropolys, and other Myriopoda, as figured by Graber. We have seen, then, that there is in the eye of Limulus an entire absence of rods and cones, a common feature of the Arthropod eye. The corneal lens of Limulus corresponds to the cornea or facet of each individual Arthropod eye, but there are no rods and cones, no optic ganglion, no scattered ganglionic cells, but the end of the long, solid, conical, corneal lens is simply enveloped by the pigment mass, and the end of the cone is succeeded by a rhabdom, partly enveloped by the retinula, the terminus of the optic nerve passing into the axial part of a retinula cell. Comparison of the compound eye of Limulus with that of Trilobites. Beyond the fact that the entire eye of certain Trilobites, and enlarged views of the outer surface of the cornea of the eye, have been described and figured in Burmeister’s work on the organ- ization of Trilobites and in various palaeontological treatises in Europe and North America, especially by Barrande in his great work on Trilobites, I am not aware that any one has given a description of the internal structure of the hard parts of the eye of Trilobites. The full bibliography of treatises relating to these animals in Bronn’s Die Classen und Ordnungen des Thierreichs, carried up to 1879 by Gerstiicker, contains references to no special paper on this subject, and the résumé by Gerstiicker of what is known of the structure of the eye, only refers to the external anatomy of the cornea, the form of the facets and their number in different forms of Trilobites. He shows that observers divide them into simple and compound; the former (ocelli) are found in the genus Harpes. These “ocelli” are said to be situated near one another, and are so large that the group formed by them can be seen with the unaided eye; the surface of the single “ocellus” appears, under the glass, smooth and shining. From the description and the figure of the eye enlarged, from Barrande, it would seem as if each eye was composed of three large simple ones; so that these eyes are really aggregate, and not comparable with the simple eye or ocellus of Limulus and the fossil Merostomata.t Moreover, the situation of these so-called ocelli is the same as that of the compound eyes of other Trilobites. The Trilobites with compound eyes are divided into two numerically very dissimilar groups; the first comprising Phacops and Dalmanites alone, and the second embracing 1 The eyes of the fossil Merostomata (Eurypterus and judging by Mr. Woodward’s figure, exactly homologous with Pterygotus) are evidently in external form and position, the ocelli and compound eyes of Limulus. 2, A. 8. PACKARD, JR., ON THE ANATOMY all the remaining Trilobites, excepting of course the eyeless genera, Agnostus, Dindymene, Ampyx and Dioride. The eyes of Phacops and Dalmanites are said by Quendstedt and Barrande not to be compound eyes in the truest sense, but aggregated eyes (Oculi congregati). But judging by Barrande’s figures of the eyes of Phacops fecundus and P. modestus (Barrande, Vol. 1, Suppl. Plate 13, figs. 12 and 22), and our observations on the exterior of the eye of an undetermined species of Phacops, kindly sent us by Mr. J. F. Whiteaves, Palaeontologist of the Canadian Geological Survey, we do not see any essential difference between the form and arrangement of the corneal lenses of Phacops and Asaphus, and are disposed to believe that the distinctions pointed out by the above named authors are artificial. For my material Iam mainly indebted to Mr. C. D. Walcott, who has so satisfactorily demonstrated the presence in Trilobites of jointed cephalothoracic appendages. On applying to him for specimens, and informing him that I wished to have sections made of the eyes of Trilobites to compare with those of Limulus, he very generously sent me his own collection of sections of the eyes of Asaphus gigas and Bathyurus longistrinosus, which he had prepared for his own study, also other eyes, and especially the shell or carapace of a large Asaphus, from Trenton Falls, showing the eye and the projecting points of the corneal lenses. Prof. Samuel Calvin kindly sent me the eyes of an unknown Trilobite from the Trenton limestone, one specimen showing the pits made in the mud by the projecting ends of the corneal lenses, while to Mr. Whiteaves I am indebted for eyes of Calymene. First turning our attention to the casts and natural sections; that of the interior of the carapace, including the molted cornea of Asaphus gigas, is noteworthy. When the concave or interior surface of this specimen is placed under a magnifying power of fifty diameters, the entire surface is seen to be rough with the ends of the minute solid conical corneal lenses which project into the body-cavity. This is exactly comparable with the cast shell of Limulus and its solid corneal lenses projecting into the body-cavity (plate 6, fig. 1). Those of Asaphus only differ in being much smaller and more numerous, and perhaps rather more blunt. Without much doubt the ends of the corneal lenses of Asaphus, as in Limulus, were enveloped in the retina, the animal molting its carapace, the hypo- dermis with the retina being retained by the Trilobite, while the corneal lenses were cast with the shell. In the specimen of the unknown Trilobite from Iowa received from Prof. Calvin, the corneal lenses, seen externally, are quite far apart, arranged in quincunx order ; the lenses are round and decidedly convex on the external surface. In a natural section, where the eye has been broken into two, the conical lenses are seen to extend through the cornea as cup-shaped or conical bodies, and are quite distinct from the cornea itself. In another broken eye of the same species, the cornea is partly preserved, and two of the corneal lenses are seen to extend down into and partially fill two hollows or pits; these pits are evidently the impressions made in the fine sediment which filled the interior of the molted eye or cornea! Thus in the Asaphus gigas noticed above, we have the entire inside of the cornea with the cone-like lenses projecting from the concave interior; while in the last example we have the impressions made by the cones in the Silurian mud which silted into the cornea after the Trilobite had cast its shell. AND EMBRYOLOGY OF LIMULUS. 23 Farther evidence that the Trilobite’s eye was constructed on the same pattern as that of the living horse-shoe crab is seen in the sections made by Mr. Walcott. We will first describe, briefly, the eye of Limulus. Plate 6, fig. 1 represents a section through the cornea of Limulus; cor, the cornea which is seen to be a thinned portion of the integument ; pec, indicates one of the nutrient or pore canals, which are filled with connective tissue extend- ing into the integument from the body cavity; c/,is one of the series of solid conical corneal lenses. These are buried partly in the black retina, and the long slender optic nerve just before reaching the eye subdivides, sending a branch to each facet or cornea, impinging on the lens. Fig. 6 represents a vertical view of the corneal lenses or facets, magnified fifty diameters, as seen through the transparent cornea. It will be seen that they are slightly hexagonal and arranged in quincunx order; their external surface is flat, though that of the ocelli is slightly convex. Now if we compare with the horse-shoe crab’s eye that of the trilobite, Asaphus gigas, (plate 6, figs. 8, 9), we see that the eye is raised upon a tubercle-like elevation of the cara- pace ; the integument (it) is about as thick as that of Limulus, and it contains similar pore- canals (pe); the eye itself or cornea, occupies a rather small area; its exterior surface, instead of being smooth as in Limulus, is tuberculated, or divided up into minute convex areas; these convexities are the external surfaces of the corneal lenses, which extend through the cornea, so that its surface is rough instead of smooth as in Limulus ; ed indi- cates one of the corneal lenses which are arranged side by side; they are of slightly dif- ferent lengths and thicknesses, and the rather blunt free ends project into the cavity of the eye, which in the fossil is filled with a translucent calcite. It is quite apparent that we have here the closest possible homology between the hard parts of the eye of Limulus and of Asaphus. Another point of very considerable interest is a tolerably distinct dark line (fig. 9, rt), which seems to run across from one lens to another, and which may possibly represent the external limits of the retina or pigment mass in which the ends of the lenses were probably immersed; should this be found to be the indication of the outer edge of the retina, it would be a most interesting fact in favor of our view of the identity between the eyes of the two types of Palaeo- carida under consideration. Another section sent us by Mr. Walcott is represented by plate 6, fig. 8; it is from Asaphus gigas, but represents a less elevated and broader part of the eye than that seen in plate 6, fig. 9; the section does not so well exhibit the free ends of the corneal lenses. Fig. 7 a represents a tranverse view of the eye of Asaphus gigas, showing the hexagonal form of the facets, and their quincunx arrangement; so much like that of Limulus (fig. 6). This hexagonal appearance of the corneal lenses is still retained in natural vertical sec- tions of eyes of the same genus, where with a good Tolles lens the sides of the cones are seen to be angular. Plate 6, fig. 10, represents a few such cones. I do not understand to what this hexagonal appearance is due; for both in Limulus and the Trilobites the corneal lenses appear usually to be round, and yet in making a camera drawing (as are all those here represented) of the cornea of Limulus from above, they present the same hexagonal appearance as in Trilobites. The cause of this I leave to others to explain. 24 A. S. PACKARD, JR., ON THE ANATOMY In a section (transverse) of the cornea of Bathyurus longistrinosus, received from Mr. Walcott, the lenses are seen to be very irregular, five- or six-sided, and very irregularly grouped, not arranged in distinct rows. From the facts here presented, it would seem evident that the hard parts of the eye of the Trilobites and of Limulus are, throughout, identical. The nature of the soft parts will, as a matter of course, always remain problematical; unless the dark line indicated in plate 6, fig. 9 (rt?) really represents the outer edge of the pigment of the retina; but however this may be, judging by the identity in structure of the solid parts, we have, reasoning by analogy, good evidence that most probably the eye of the Trilobites had a retinal mass like that of Limulus, and that the numerous small branches of the long slender optic nerve (for such it must have been) impinged on the ends of the corneal lenses. It has been shown by Grenacher and myself that the eye of Limulus is constructed on a totally different plan from that of other Arthropods; I now feel authorized in claiming that the Trilobite’s eye was organized on the same plan as that of Limulus; and thus when we add the close resemblance in the larval forms, in the general anatomy of the body-segments, and the fact demonstrated by Mr. Walcott that the Trilobites had jointed round limbs (and probably membranous ones), we are led to believe that the two groups of Merostomata and Trilobites are subdivisions or orders of one and the same sub- class of Crustacea, for which we have previously proposed the term Palaeocarida. Structure of the simple eyes or ocelli. Owing to insufficient material, Grenacher did not study the simple eye of Limulus. The structure of an ocellus repeats very closely that of one of the individual facets or members of the compound eye. At the point where a simple eye is situated, 7. e., on each side of the median spine near the front edge of the carapace, the chitinous integument suddenly becomes much thinner; the integument is divided as in the cornea of the compound eye into three portions, an outer thin yellow clear portion; a much thicker finely laminated part with fine granules and capable of being stained reddish ; and a much thicker clear part, which has about a dozen layers, not seen in the third inner layer of the integument next to the edge of the compound eye. The integument is also penetrated throughout by canals filled with connective tissue. The surface of the cornea is slightly convex. Next to the base of the large corneal lens, there is a chitinous portion (p) which is less dense than the adjoining clear part, becoming stained a pale crimson by picro-carmine. Just as in the facets of the compound eye the laminated part of the cornea extends conically into the. base of the corneal lens, forming a cone within the larger lens; this part (2) is less dense than the lens, and is usually more distinctly conical than the lens itself. The latter is a large solid mass of chi- tin, with two curved lines (plate 5, fig. 13, cl) in some examples, showing a slight ten- dency to lamination; in form it is longer than thick, and very obtusely rounded at the end, being as thick near the end as at the base; in form therefore the lens differs decidedly from that of the corneal lenses of the compound eye. That the corneal lenses of both simple and compound eyes of Limulus are solid is proved by the fact that they do not stain reddish like the laminated portion of the cornea and adjacent integument, and also because they are excavated as solid cones projecting inwards from the cast AND EMBRYOLOGY OF LIMULUS. 25 chitinous crust of the animal. In a specimen (fig. 12), not treated with acid, the end of the cone is seen to be buried in pigment, and in one out of many sections, i. e., that figured 14, the cut went directly through the ocellar nerve, which, as seen in the figure, after leaving the branch distributed to the other ocellus, proceeds undivided to a distance about equal to the diameter of the corneal lens, when it gives off minute fibres which pass up and lose themselves in the pigment layer near the base of the cone. The main nervous trunk is seen to impinge directly on the end of the pigment mass surrounding the end of the lens, while branches pass up into the pigment on each side of the lens; so that the latter is immersed, so to speak, in a multitude of nervous fibres. On treating the pigment with acid, and cutting a section on one side of the solid lens, as at plate 6, fig. 5, the entire mass of connective tissue and pigment is seen to be permeated with nerve-fibres, which end im slight, bulbous, partly hyaline expansions next to the chitinous integument. Nothing like the rhabdom or retinula was to be observed, and I doubt much if they exist. or any nucleated ganglionic cells. We have, then, in the simple eye or ocellus of Limulus a repetition of the general structure of any one of the individual eyes of the compound organ of vision, without the rhabdom and retinula. The simple eye, then, in the horse-shoe crab is apparently rather more rudimentary than one of the elements of the compound eye; and it is difficult to conceive of-a much simpler form of eye in an arthropodous animal ; hence it can not be said of the ocellus of Limulus that it is not less primitive in structure than the compound eye; for we have here the eye reduced to a corneal lens, retina and optic nerve, the simplest association of elements in any organ of vision. Comparison of the ocellus of Limulus with the eyes of Myriopods. When we compare the ocellus of Limulus with that of the Arachnida, and of larval insects, there is very considerable difference. In the form of the corneal lens, however, the ocellus of Limulus somewhat approaches that of the Myriopods, as lately worked out by Graber." An examination of the agglomerated eye? of Bothropolys bipunctatus Wood —a genus allied to Lithobius, the species here named being common in Northern California at the base of Mount Shasta — shows us that the myriopod eye, as a whole, is entirely unlike that of Limulus. The brain, in the first place, is on the usual Arthropod type; the hemispheres being symmetrical, and the relative position of the larger ganglion-cells being like those of hexapod insects. A large mass of ganglion-cells is situated at the origin of each optic nerve. As regards the eye or group of eyes, the individual eyes are abont eighteen in number and closely aggregated, though each simple eye or facet is circular and its surface convex. The cornea in the specimen examined, while externally convex, is concave on the inside, the cornea being no thicker in the middle than 1 Ueber das unicoreale Tracheaten- und speciell das Archiv. fiir mikr. Anat. Bd. 17, heft. 1. Aug. 14, 1879. Arachnoiden- und Myriopoden-Auge. Von V. Graber. ? Our sections were kindly made for us by Mr. Mason. 26 A. S. PACKARD, JR. ON THE ANATOMY on the sides, not being lens-shaped as usual in the Myriopod and Arachnidan eyes, as described by Graber and Grenacher. The cornea is laminated, as in the integument. That the cornea is apparently normally concave in this genus, seems evident from the fact that the soft parts next to be described fill the concavity of the cornea. The solid parts, then, of this Myriopod, are quite unlike the larger corneal cones of Limulus ; though in general, the corneal lens of the Myriopods examined by Graber appear to be homologous with the cones of Limulus. When we compare the soft parts of the eye of Bothropolys and the Myriopods in general with those of Limulus, we find nothing in common. In Bothropolys the soft parts consist of the layer of rather large, round, nucleated, epithelial cells, situated next to the cornea, and called by Graber the “ lens-epithelium or vitreous-body cells,’ (Glaskérperzellen). This layer (absent in Limulus) is suceeeded by the layer of short, slender-pointed rods, as figured by Graber, with large nucleated cells in the tissue enveloping them. This layer of rods, homologues of the rods of other Tracheate and Crustacean eyes (also absent in Limulus) is succeeded by the retina, a continuation of the hypodermal epithelial layer, the cells of the latter being much more distinct and larger than the hypodermal cells of Limulus. The retina, whose structure differs from that of Limulus in having no “ retinula,” is succeeded by the ganglion opticum, (absent in Limulus), which consists of a layer of -very large ganglion-cells rounded and overlapping each other; their fibres leading away from the eye, to form the optic nerve. Eye of Cermatia forceps. The eye of this Myriopod appears to be constructed on the same plan as that of other myriopods though differing in some important respects. Though Cermatia is said to have compound eyes in contradistinction from the ocelli of other myriopods, the latter are truly aggregated or compound, the so-called “ ocelli” being made up of contiguous facets, the nerve fibres which supply them arising in the same general manner from the optic nerves. The following description is made from sections made by Mr. N. N. Mason of Provi- dence, and loaned me for description : — The eye is composed of a hemispherical, many facetted cornea, the lenses of which are shallow, doubly convex, being quite regularly lenticular, the chitinous substance being laminated as usual. Each corneal lens is underlaid by a retina about as thick as the cornea, the inner surface of each retinal mass being convex. Corresponding to each lens is a separate mass of connective tissue, which increases in thickness from the end of the optic nerve outwards towards the cornea, there being usually a clear interspace between each mass. Within the broad stratum of connective tissue, next to the corneal lens within the retina, is a layer of rounded “ vitreous cells” or “or lens-epithelium” of Graber. This layer is succeeded by the series of rather large visual rods, one in each mass corresponding to each corneal lens; these rods are long and sharp, conical at the end, the ends extending one-half to two-thirds of the distance inwards to the inner edge of the retinal mass; they each possess a nucleus, and the connective tissue enveloping the rods is nucleated, while there is an irregular layer of nucleated cells near or around the ends of the rods. AND EMBRYOLOGY OF LIMULUS. ON a This layer of cells is succeeded by a thin, slightly curvilinear, transverse strip of connective tissue, passing through the entire eye, and behind it are the loose, nucleated spherical cells forming the ganglion opticum, among which the fibres of the optic nerve pass. The brain of Cermatia forceps, as shown by several sections, is modelled on the same plan as we have observed in Bothropolys and so far as we see, the myriopod brain corre- sponds more closely in its general form and structure with that of the Insects than of the Crustacea. The large, thick optic nerve arises from the upper side of each hemisphere. The median furrow above is deep, and on each side is a mass of small ganglion-cells ; also a mass in the deep sinus below the origin of the optic nerve, and another mass on the inferior lobe extending down each side of the oesophagus, probably near or at the origin of the posterior commissure. These masses, i. ¢., those on the upper and under side of the brain, connect on each side of the median line, and in this respect the brain is as in Bothropolys. There are no large ganglion cells, as in the Crustacea and in Limulus. It will be seen from this brief account that the eyes of Limulus differ from those of Myriopods in wanting the lens-epithelium, the rods, and a ganglion opticum, which are present in other Arthropods, both tracheate and branchiate. Tue BRAIN AND ITS INTERNAL STRUCTURE. Several years ago, before the present interest in the study of the brain of Arthropoda had arisen, I made an attempt to study the brain or supra-oesophageal ganglion of the horse-shoe or king crab. Mr. T. D. Biscoe kindly cut a number of sections for me. These were unstained, and owing to interruptions were not examined until the past winter, when with the aid of a large number of other sections made by Mr. N. N. Mason of Providence, R. I., I have been enabled to present the following results. The brain was in some cases stained with osmic acid in the manner described by Dietl' and adopted by Newton — being taken from the living animal and allowed to remain in the osmic acid from twenty to forty hours. The best results, however, were obtained from sections of two brains, one of which had been several years in alcohol, and which took the osmic acid stains very evenly ; better results ensued by staining, after hardening the brain for two or three days in alcohol; the brain is so large that it does not harden readily, when put fresh and living in osmic acid alone. When sections were not properly stained in the centre with osmic acid, they were further treated with a picro-carmine stain with good results. Mr. Mason embedded the brain, when 1The following articles bearing on the brain of the Ar- Flégel. Ueber den einheitlichen Bau des Gehirns in den thropods have been consulted; the actual bibliography of verschiedenen Insectenordnungen. Zeitschr. wissensch. the subject being somewhat fuller. Zoologie, Bd. xxx, Suppl. 1878, p. 556. Ofsiannikoff. Ueber die feinerer Structur des Kopfeang- Newton. On the brain of the Cockroach, Blatta orientalis. lions bei den Krebsen, besonders beim Palinurus locusta. By E. T. Newton. Quart. Journ. Microscopical Science, Von Ph. Ofsiannikof. Mém. Acad. Imp. Sc. St. Peters- July, 1879, p. 340. bourg. Tom. VI. No. 10, 1863. Krieger. Ueber das Centralnervensystem des Fluss- Dietl. Die Organization des Arthropodengehirns. Von krebses. Von K. R. Krieger. Zeitschrift fiir wissenschaft. M.J.Dietl. Zeitschr. wissensch. Zool. Bd. 27,1876, p.488. Zoologie. Bd. xxx111, Jan. 23, 1880, p. 527. 28 A. 8. PACKARD, JR. ON THE ANATOMY hardened and after remaining twenty-four hours in gum water, in a mixture of equal parts of paraffine, wax and olive oil, so that the consistency of the imbedding substance was nearly as soft as the tissue to be cut. The sections were made by a microtome devised by Mr. Mason, and were mounted in glycerine jelly. While between two hundred and three hundred sections were made, by far the best results were obtained by a series of fifty-six sections, cut by Mr. Mason from one brain, and forty-four from the upper four-fifths of another brain, the slices being either zoo OY sty Of an inch in thickness; the best results of course were obtained from the thinner sections. These were deeply stained of a dark-brown, the ganglion-cells and nerve-fibres being much lighter than the nucleogenous masses forming the larger part of the brain, these being dark brown, the former tawny or yellowish brown. The examination of a few sections of the brain of the lobster and the locust also kindly prepared by Mr. Mason, enabled me the more readily to understand the recent papers of Dietl, Newton and Krieger on the brain of the crawfish and insects, and afforded a stand- ard of comparison with which to study the topography and histology of the brain of Limulus. General anatomy of the brain. The position of the brain in relation to the body walls and digestive tract is seen in the section of the adult animal on plate 2, fig. 1, br. The central nervous system consists of an oesophageal collar made up by the consolidation of six pairs of postoral ganglia from which nerves are distributed to the six pairs of gnathopods. The ring is closed in front by the supra-oesophageal ganglion, or the partial homologue of that pair of brain-centres in the normal Crustacea and Insects. It will be remembered that in these Arthropods the brain is situated in the upper part of the head, in a plane parallel to, but quite removed from, that of the rest of the ganglionic chain; in Limulus, however, the brain is situated directly in front of and on the same plane with the horizontal oesophageal collar, and the abdominal portion of the central nervous system. We now come to the singular relations of the ventral system of arterial vessels to the nervous system. This is fully described by A. Milne-Edwards. After describing the vascular ring surrounding the oesophagus he remarks: “ Lorsqu’on ouvre cette portion du systeme artériel, on trouve dans son intérieur le collieur nerveux oesophagien, le reste de la chaine ganglionnaire et la plupart des principaux nerfs qui y sont baignés par le sang. Les artéres ne sont par seulement appliquées sur le systeéme nerveux, comme chez les scorpions, ou développées a la surface de ce systéme de facon a le recouvrir ; elles logent celui-ci dans leur cavité. Cette disposition rappelle celle du réservoir sanguin dans Pintérieur duquel M. de Quatrefages a constaté l’existence des ganglions cerébroides chez les Planaires, et celle du vaisseau ventral des Sangsues, découvert par Johnson.” He then states that these singular relations of the apparatus of innervation with the arterial system of Limulus have been seen, but very incompletely, by Professor Owen, and are more intimate than this eminent anatomist thinks, and quotes as follows from Owen’s Comparative Anatomy and Physiology of Invertebrate Animals (1855, p. 320): “The two large lateral branches (celles qui j’appelle les crosses aortiques) form arches which curve down the side of the stomach and the oesophagus, giving branches to both those parts and AND EMBRYOLOGY OF LIMULUS. 29 to the intestine, and becoming intimately united with the neurilemma of the oesophageal nervous collar. They unite at the posterior part of that collar, and form a single vessel, which accompanies the abdominal nervous ganglionic chord to its posterior bifurcation, when the vessel again divides. Throughout all this course, the arterial is so closely connected with the nervous system as to be scarcely separable or distinguishable from it. The branches of the arterial or nervous trunks which accompany each other may be defined and studied apart.” Afterwards in his “Anatomy of the King Crab,” p. 24, Professor Owen thus writes of the arterial system: ‘On each side the origin of the ‘ocellar artery arises one of double the size (7b., e.e), which, diverging from its fellow, curves outward and downward over the fore-part of the intestinal canal (plate 2, A, fig. 1s); it gives off, in this course, a branch which ramifies upon the gizzard, a second to the intestine and liver, the main trunk being continued to the nervous annular centre where it expands, and combines with its fellow of the opposite side to forma sheath for that centre analagous to a ‘duramater. This rather loose sheath is continued along the ganglionic ventral cord, and is prolonged, like a loose neurilemma, upon the nerves sent off therefrom, as it is upon those in connection with the annular centre.” ! Our own dissections and microscopic sections have taught us that the brain is enclosed by a thick neurilemma, which is different histologically from the arteries, contain- ing no muscular layer. This layer closely envelops the brain-substance, and there is cer- tainly no space between the brain and its neurilemma for the passage of the blood. Now the two lateral arteries descend fiom the anterior end of the heart, and open just behind the brain into the space between the oeosophagal ring, and its neurilemma, so that the latter is bathed in blood; the artery merges into the neurilemma, the sinus being largest on the upper side of the oesophageal ring. On each side of the back of the brain is a large artery for the supply of the brain, but there are no small arterial branches. The whole nervous cord behind the brain, including the ganglionic enlargements, is loosely invested by this neurilemma, the space being very wide between the nervous cord and its loose coat, so that the nervous cord and ganglia ‘are directly bathed by the blood. This neurilemma (or perineurium) also invests the larger nerves sent off from the ganglia. That the nervous cord fills up but a portion of the space within this outer coat may be seen by reference to plate 6, figs. 12-14. In embedding the portions of the nervous cord to be cut, the interspace is filled with the paraffine preparations. We thus conclude, that while Owen and Milne-Edwards’ view is substantially correct, it should be modified somewhat, viz., the blood does not flow around the brain itself, though it may flow around the nerves sent to the simple and compound eyes ; and the nervous system appears to us not to be surrounded by a true artery, but that the thick permeurium becomes a vicarious arterial coat. The brain in a Limulus ten inches long, exclusive of the caudal spine, is about six millimetres in diameter; it is broad and flat above, and on the under side full and 1 Having only the first edition of Owen’s Lectures on the remarkable feature of the nervous axis of this Crustacean Invertebrates in my library, I can not verify the quotation is its envelopment by an arterial trunk.” From this it above made from the edition of 1855. In a recent letter would appear that Professor Owen was the first to perceive from that distinguished anatomist he quotes as follows from that the nervous cord is enveloped by the artery, though p- 309. “The sides of the great oeosophageal ring are these organs were afterwards elaborated described and united by two transverse commissural bands; but the most figured by A. Milne- Edwards. 30 A. S. PACKARD, JR., ON THE ANATOMY rounded; on the upper side is a broad, shallow, median furrow, indicating that it is a double ganglion. Three pairs of nerves and a median unpaired one (the ocellar) arise from the upper third of the anterior face of the brain. The two optic nerves are the largest, arising very near the upper side of the brain, one on each side of the median furrow, so that the second and third sections made by the microtome, pass through them. Next below (from above downwards), is the origin of the single nerve sent to the two ocelli. We have not traced this nerve as far as the ocelli, but Milne-Edwards states that near the ocelli it divides into two branches. One of these two branches we figure in the drawing of the ocellus (plate 5, fig. 14). On each side of the ocellar nerve, and in nearly the same plane, arise two tegumental nerves, and directly below them a second pair of larger nerves (fronto-inferior tegumental) descend ventrally. © No nerves arise from the inferior half or two-thirds of the brain, which is smooth and rounded, with no indications of a median furrow. It will thus be seen that, as stated by A. Milne-Edwards, there are no antennal nerves, such as usually exist in Arthropods with the exception of the Arachnida. This we have proved in the same manner as Milne-Edwards (though at the time ignorant that he had pursued the same method), by laying open with fine scissors the envelop (arterial or peri- neurial) which reaches to the posterior end of the brain, and seeing that the fibres of the nerves sent to the first pair of gnathopods originate quite independently of the brain itself. Moreover, after making sections of several brains, it is easy to see that only the commissures connecting the brain with the oesophageal ring are present; the nerves to the first pair of gnathopods not arising from the brain itself, but from the anterior and outer part of each side of the oesophageal ring, 7. e., where the ring joins the brain; the commissure is very short in the larva, and obsolete in the adult. Internal structure and histology of the brain. Most of the numerous stained and unstained transverse sections threw but little light on the topography ; the nerve-fibres and ganglion-cells being apparently arranged horizontally, and mostly confined to the upper part of the brain ; at any rate it was not until I had studied the horizontal sections, that I could gain an insight into the relation of parts as shown by sections cut vertically from in front backwards. Finally a series of about fifty sections each, from two brains, cut by Mr. Mason hori- zontally from above, downwards, and carefully mounted in consecutive order, each section being numbered, has enabled me to arrive at a tolerably complete idea of the topography of the brain, so that I could mentally construct a model of the brain of Limulus, and compare it with the normal arthropod brain. The histological elements are four in number : — 1. Large ganglion-cells, filled densely with granules, and with a well defined nucleus similarly filled and containing a granulated nucleolus. These cells (plate 7, fig. 3c) may be crowded or loosely grouped; the granular contents varying in density, and the walls of the cell thick and loose or thinner and dense ; they terminate in large nerve fibres. They are similar in form and size, though not in topographical arrangement, to the large ganglionic cells of the lobster’s brain (see plate 7, fig. 1b). AND EMBRYOLOGY OF LIMULUS. 831 2. Smaller ganglion-cells, much more numerous than the larger, more hyaline, having much fewer granules and with the nuclei less distinctly outlmed (plate 7, fig. lc). They are seen to be somewhat smaller, but otherwise like those in the brain of the lobster, which we also figure (plate 7, fig. 1d). 3. Nerve fibres; these, like the large sized ganglion-cells from which they originate, are stained tawny yellowish brown with osmic acid. ‘These fibres (plate 7, figs. 5a, 3b) are large and coarse, their fine granular contents homogeneous, and they closely resemble the nerve-fibres distributed to the compound and simple eyes of Limulus. Certain fibres near the origin of the optic nerves are distinctly nucleated at intervals (plate 7, fig. 3b). 4. Minute cells, or rather nuclei, very numerous and forming the large ruffle-like masses enveloped in connective tissue and constituting the greater part of the brain. They stain dark brown with osmic acid, so that these fungoid or ruffle-like bodies are read- ily distinguishable by their dark brown color from the surrounding tissues, which stain much lighter. In unstained sections simply hardened by alcohol, the tissue or bodies formed by these nuclei is darker than the other tissue, which is white. As these masses or bodies appear to be wholly made up of nuclei, I propose that they be distinguished by the name of nucleogenous bodies. The brain itself is enveloped by a very thick, dense membrane, which I am disposed to regard as a neurilemma, homologous with that of the lobster’s brain, though much thicker. It is formed of a fibrous connective tissue, and probably some elastic tissue, which directly penetrates into the brain-substance, forming a network of connective tissue enclosing the nucleogenous bodies ; with occasionally clear nucleated portions in the spaces between the balls of minute nuclei, 7.e., the nucleogenous bodies. The fact that this envelop of the brain, a direct continuation of the so-called arterial coat of the oeso- phageal ring, is so intimately connected with the brain-substance itself, and that there is no space between it and the brain for the passage of the blood, and that an artery is situated outside of the brain (plate 7, fig. 4, a7), indicates strongly that this corresponds to the neuri- lemma of other invertebrates, or what Krieger designates as the “ perineurium.” It forms a fold on the upper side of the oesophageal ring, and thus becomes the direct continuation of the large lateral aortic branches; but it seems to be formed of short, tortuous fibres of connective tissue, with no true muscular fibres, such as are seen in transverse sections of the smaller arteries. We will now describe the topography of the brain as seen in sections, beginning with the upper surface, at the origin of the optic nerves, and going downwards. After the microtome has made five slices ;5/59 — $y ch thick, removing the upper part of the low elevations on each side of the broad, shallow median furrow, a section (plate 7, fig. 1) is obtained, which extends through the optic nerves, and also includes a part of the commis- sures by which the brain is connected with the oesophageal ring, the commissures being situated on the dorsal side of the central nervous system; while the brain is here rather short antero-posteriorly, the median cleft or anterior end of the oesophageal opening projecting well into the brain; the latter is more symmetrical in life than indicated in the figure, the brain being probably contracted a little in alcohol, and in the gum, while the razor made a slanting cut, so that while it passed through the middle of the right optic nerve, it merely grazed the edge of the opposite nerve. 32 A. §8. PACKARD, JR., ON THE ANATOMY At the uppermost region of the brain the sides are occupied by the nucleogenous bodies (nb), extending nearly to the back of the brain, but not reaching near the front. Within, but next to these nucleogenous bodies, are large sub-spherical masses of nu- cleated cells (fig. 1, em), from which the optic nerves apparently arise. (Only the outer edge of the left mass has been cut through.) These cells are abundant and represented by fig. 2. They are hyaline, contain few granules, as do the nuclei. They are a little smaller than those of the lobster, which we have drawn to the same scale with the camera lucida, but it will be seen that they are identical morphologically. En- closing in part the left mass of cells is a Y-shaped mass of fibres and nuclei (y) which reminds one of the trabeculae of the cockroach’s brain. This apparently is not of much importance, and is an offshoot from the central mass of nerve-fibres, as in five sections below, it merges with the other fibres. Just behind the middle of the brain, on each side of the median line, is a group of large ganglion-cells adjacent to the rounded cellular masses. Behind each group of large ganglion-cells originate the fibres of the com- missures connecting the brain with the oesophageal rmg; on the outside of the com- missural nerve-fibres is a group of large ganglion cells longitudinally disposed. As we descend from the top to the base or under side of the brain, the commissure is cut through and disappears, the brain extending considerably below the oesophageal ring. In the next section the large ganglion-cells are seen to be scattered through the middle of the posterior fibrous portion of the brain. In the tenth section two large ruffle or fungus-like nucleogenous bodies appear, one on each side of the median line, with several smaller ones; and at the back part of the brain a bridge or transverse bundle of fibres now appears, connecting the mass of nerve-fibres on each side of the brain. This bridge becomes thicker as seen in the fourteenth section (plate 7, fig. 2). This latter section passes through the lower edge of the right optic nerve (op 7). The fibrous region is now invaded more than above by the nucleogenous bodies (nb), the former being mostly restricted to the posterior half of the brain, the brain itself being longer, and the oesophageal opening not extending so far into the middle of the brain. Its bilateral symmetry is seen to be tolerably marked. The Y-shaped fibrous mass is broad and obscurely marked; while the nucleogenous bodies occupy nearly two-thirds of the area of the section, the area having extended from the sides around to the front, nearly meeting on the median line of the brain. There are two central areas containing large ganglionic cells, and two other similar areas farther back and nearer the sides of the brain. Plate 7, fig. la, represents the size of the large ganglion-cells of Limulus, compared with fig. 1b of a similar cell from the lobster’s brain; the two being identical in size and in den- sity of the protoplasmic granules. Plate 7, fig. 3, represents a section through the front part of the right side of the brain; it shows the origin of the optic nerve from the small sized ganglion-cells in the central region of the brain. That the nerve-fibres within the brain are sometimes nucle- ated is shown by the adjoining figures (3a, 3b), where the nerves are cut transversely. Plate 7, fig. 4 represents a section through the ocellar nerve, just grazing the right teg- umental nerve. The fibrous portions are still more restricted, and they extend to the AND EMBRYOLOGY OF LIMULUS. 33 insertion of the nerves; the fibres are arranged into transverse as well as longitudinal bundles, of which the more important ones are figured, but of their origin and termination nothing definite has been ascertained. Plate 7, fig. 5 represents a section through the middle of the ocellar and two tegumental nerves, and though it is obvious that the razor cut tolerably even, as the nerves are quite evenly severed, yet it will be seen how unsymmetrical the brain at this point is, after allow- ing for unequal contractions due to reagents. The median line between the two sides is very obscure and irregular; the mass of large ganglion-cells is quite large, and disposed in an unbroken mass on each side of the median line, should one be drawn through the brain. On the right side the fibres are almost wholly confined to an area near the middle of the right half, while the left side of the brain is mostly occupied with fibres, the nucleogenous bodies not extending to the back of the brain, as on the opposite side. At this part of the brain, in the more symmetrical specimen of the two brains specially studied, the nucleogenous bodies occupy nearly two-thirds of this plane of the brain; while the posterior group of large ganglion-cells is more extensive than above, and there are now but faint traces of the “ bridge” of new fibres. Tn a section lower down, near the middle plane of the brain, the nucleogenous bodies extend to the back of the brain, thus enclosing the mass of large ganglion-cells, which hes in front towards the middle of the brain; the nucleogenous bodies, at least the longer narrower masses, extend in towards the centre of the brain, so that they seem to radiate outwards from near the centre to the periphery. In a section through the pair of lower tegumental nerves (fig. 6), in the same brain as represented at fig. 5,and on the same side, the fibrous masses are seen to be greatly reduced in extent, now filling up narrow spaces between the nucleogenous masses which converge towards the interior of the brain. The fibres evidently originate from the smaller and larger ganglion-cells, and pass forward and outward among the ruffle-like nucleogenous bodies. In the section here figured, the large ganglion-cells extend to the extreme back of the left side of the brain. In another section below the nerves (fig. 7), the fibrous portion does not apparently reach the front, nor much beyond the middle of the brain, which at this point in one brain shows but slight symmetry, no fibres being visible in the right side. Just below the section last figured, where no nerves are sent out from the brain, and before the sections diminish in size, the whole area seems to be filled with large rounded nucleogenous fungoid bodies, forming about eight irregular series passing from the back to the front of the brain, and arranged four on a side. A very few small bundles of nerve- fibres are to be seen, but with no determinate direction. This disposition of the histolog- ical elements extends downward to the bottom of the brain. A transverse section of the brain from above downwards, cut just before the middle of the brain (fig. 8), shows nearly the same arrangement of parts as in horizontal sections ; the upper part is seen to be occupied with the two larger groups of large ganglion-cells (Lg), the nucleogenous bodies taking up most of the remainder of the brain, while a long bundle of nerve fibres (fa) passes from above downwards between the nucleogenous bodies. 34 A. 8. PACKARD, JR, ON THE ANATOMY To recapitulate and generalize from the foregoing facts: The brain is largely composed of masses of nuclei (nucleogenous bodies), enclosed by a mesh-work of connective tissue ; ‘these bodies nearly fill up the lower part of the brain, 7. e., that part below the origin of the nerves. In the upper half or third of the brain whence the nerves originate, the larger and smaller ganglion-cells and bundles of nerve-fibres appear and preserve a more or less definite topographical relation to the entire brain. The nucleogenous bodies at and near the top of the brain are confined to each side of the brain, though masses of large ganglion-cells, associated with smaller ones, and nuclei, one on each side, just behind the middle, pass from below upwards; these groups of cells are more or less spherical as they erow smaller near the under side and at the top of the brain. The ganglion-cells altogether give rise to bundles of nerve-fibres; though it is probable that many nerve- fibres are without beginnings from cells, but originally developed from nuclei, as the gang- lion-cells probably are in the beginning; since, in the larval brain, no fibres are to be seen, the brain substance consisting of cells alone. (See plate 3, fig. 5a.) Thus the tract of nerve-fibres in each half of the brain is irregularly wedge-shaped, the apex situated near the centre of each hemisphere, and the base spreading out irreg- ularly on the top, thus pushing aside, as it were, and crowding to the walls on each side the seemingly less dynamic portion of the brain, 7. e., the masses of nuclei, or undeveloped cells (nucleogenous bodies). At the upper part of the back of the brain, just outside, at the origin of the posterior commissures, are two longitudinal groups of ganglion-cells on each side; these disappear below with the commissural nerves themselves. The asymmetry of the brain, compared with that of other arthropods is remarkable ; the large ganglion-cells are most abundant in the centre behind the middle, extending from that point to the posterior side of the brain; a median line is only slightly indicated by the arrangement of the fungoid bodies. The tract composed of large nerve-fibres, with scattered ganglion-cells on the left side, is much more extensive than on the right. Comparison with the brain of other Arthropods. So wholly unlike in its form, the want of antennal nerves, and its internal structure, is the supra-oesophageal ganglion or brain of Limulus, to that of the higher Crustacea (7. e., Decapoda, the brain of the lower Crustacea not yet having been examined), that it is difficult to find any points of comparison. Histologically, judging by my few sections of the lobster’s brain which are stained with carmine, the brain of Limulus agrees with that of other arthropods in having similar large and small ganglion-cells, but the topography of the cell-masses essentially differs in the two types of brain. There are in Limulus no Ballensubstanz-masses, so characteristic of other arthropods, — the histological elements constituting these not having yet heen dis- covered in Limulus. We conclude, therefore, that, topographically, the internal structure of the brain of Limulus is constructed on a wholly different plan from that of any other arthropodous type known, so much so that it seems useless to attempt at present to homologize the different regions in the two types of brain. The plan is simple in Limulus; much more complex in other arthropods, especially im the brain of the decapodous, and probably most other Crustacea, the Decapoda haying two pairs of antennal nerves beside the optic. In external appearance the two types of brain are entirely unlike. The symmetry of the AND EMBRYOLOGY OF LIMULUS. 35 brain of the crayfish and lobster and insects is beautifully marked (each hemisphere exactly repeating in its internal topography the structure of the opposite side), while that of Limulus is obscure and imperfect. Structure of the oesophageal ganglia. (Plate 6, fig. 11.) A section through one side of the oesophageal ring, running through a ganglionic centre and the origin of the nerve to one of the anterior (second?) gnathopods (gnn) shows that the topography is quite simple. The central mass is mostly composed of nuclei and nerve fibres, the latter predominating until the nuclei disappear towards the base of the ganglion, where the nerve to the foot- jaw originates. On the outside of the ganglion, along nearly the whole length, are scattered large ganglion-cells (/yc). Near the upper and outer side is a group of small, narrow nucleogenous bodies (nb). There is a wide space for the passage of the blood between the ganglion with its nerve and the connective-tissue envelope, which is thick and of the same structure as the perineurium of the brain itself. This space extends along the whole length of the nervous system to the termination of the cord, the nerves sent to the appendages being enveloped by a continuation of the same coat. Among the large ganglion cells are numerous smaller ones, some of which are truly bipolar, as represented in our drawing (fig. lla); the nuclei have distinct edges, so that I regard them simply as small-sized ganglion-cells rather than nucleated nerve-fibres. Structure of the abdominal ganglia. There are six abdominal ganglia, the last being larger and longer than the others. A section through the second abdominal ganglion (plate 6, fig. 12) shows that the central mass of the double ganglion consists of longitudinal fibres, with scattered nuclei. On the upper side in the median line is a group of large and small ganglion-cells, and beneath is a mass extending to each side where they become most numerous. In some sections the central fibrous mass is enveloped by an irregular layer of ganglion-cells, some bipolar, with nerve-fibres forming a loose net work. In fig. 12 a nerve connected by its neurilemma with that of the ganglion has been cut through; in this nerve there are only fibres present. In fig. 15 a large nerve leading to the abdominal appendage is seen to be sent off from one side of the double central mass; the other side (gang) has been torn away from the one opposite. In neither this nor in sections of the last elongated abdominal ganglion were any nucleogenous bodies to be seen, so it seems most probable that none occur in the abdominal ganglia. The section here figured of the last abdominal ganglion (plate 6, fig. 14) is seen to pass through four nerves, two on each side. The ganglion is seen to be formed by the union of the two separate cords, which are separate just before the ganglion. Above the ganglion on each side of the median line is a mass of large ganglian cells, of the same size as those of the brain, associated with more numerous smaller ones. This mass extends around and beneath each hemisphere of the ganglion, forming a layer of cells and fibres, some of the cells distinctly bipolar, which becomes interrupted at the median line, indicated by the deep notch in the central fibrous nerve-mass. The fibres from the laterally- situated cells are distinctly seen passing in and mingling with the fibres of the central nerve-mass; thus the nerves are reinforced from the peripheral ganglion cells. The 36 A. S. PACKARD, JR., ON THE ANATOMY central masses are composed of nerves, with a few nuclei; the fibres are mostly cut across, but occasionally short bundles of nerve fibres are seen lying across the cut ends of the others, though near the outer edge fibres are seen originating from the cells and passing in to the nerve mass. FurTHER CONTRIBUTIONS TO THE EmpBryonoay or Limu.us. The blastodermic skin or serous membrane. In my paper in the Memoirs of the Boston Society of Natural History I stated that the blastodermic skin, just before being moulted, consisted of nucleated cells, and I also traced its homology with the so-called serous membrane or outer “ Faltenhulle” of the ectoderm of insects. In 1873,’ by making transverse sections of the egg, I was able to study in a still more satisfactory manner these blastodermic cells, and to observe their nuclei before they became effaced during and after the moulting of the blastoderm. On June 17th (the egg having been laid May 27th), the peripheral blastodermic cells began to harden, and the outer layer, that destined to form the outer or “ serous” layer, to peel off from the primitive band beneath. The moult is accomplished by the flattened cells of the blastodermic skin hardening, and peeling off from those beneath. During this process the cells in this outer layer lose their nuclei, contracting and hardening during the process. Plate 3, fig. 14a shows at o the moulted empty cells with the nuclei empty and beginning to disappear, the walls being ragged and contracted; at b is the layer underneath of lining cells, with granules and distinct nuclei. Figs. 14¢ and 14d show the same cells during the moult, as seen from above and sideways; 14 represents the normal blastodermic cells, with a large, well-filled nucleus. This blastodermic moult is comparable with that of Apus, as I have already observed, the cells of the blastodermic skin in that animal being nucleated. This blastodermie skin may also, in its mode of development, be compared with the serous membrane of the scorpion as described by Metschnikoff, and with that of insects, in which at first the blas- todermic cells are nucleated, and appear like those of Limulus. A similar moult takes place in Apus. On June 19th, in other eggs, the cells of this membrane were observed to be empty, and the nuclei had lost their fine granules, and were beginning to disappear. The walls of the cells had become ragged through contraction, and in vertical sections short, peripheral, vertical, radiating lines could be perceived. At this time an interesting phenomenon was observed. In certain portions of the serous membrane the cells had become effaced, tran- sitions from the rudiments of cells to those fully formed being seen. In insects and crustaceans, as a rule, the cells all finally disappear, the serous membrane being structure- less and homogeneous. The relation of the blastodermic cells in the serous membrane of Limulus is due, without doubt, to the singular function this skin is destined to perform ; i. @., its use as a vicarious chorion, the chorion itself splittmg apart and falling off in consequence of the increase in size of the embryo. 1 The substance of this account appeared in the American 2 See Memoirs Bost. Soc. Nat. Hist., 11, 161, foot-note. Naturalist, Nov. 1873, vir, p. 675. AND EMBRYOLOGY OF LIMULUS. By Development of the internal organs. Although a good many eggs were sliced, I was unable to discover any in the stage when the ectoderm and endoderm are differentiated, nor to examine the embryo in the gastrula condition, if there be such. The eggs were either in the stage of segmentation of the yolk, or the embryo was so far advanced that the indications of the segments had appeared. This period of development of the gastrula is evidently intermediate between the stages, plate 3, fig. 7, and fig. 10 of my first memoir The succession in which the more important system of organs arise, is as follows :— first the nervous'system; long afterwards the muscles and the heart. These organs are well developed before the larva hatches, though the first indications of the mesoderm were not observed. It is not for some time after hatching that the digestive canal as a whole is formed; although in the gastrula condition an archenteron may probably be developed, I have been unable to detect, after making numerous sections of eggs and embryos, any traces of the stomach and intestine until long after the larva has hatched. The primitive liver-tubules and the ovaries seem to arise at about the same time after the digestive canal is indicated. The development of the renal organs was not traced, no indications of these organs being detected. The eyes begin to form at the time of hatching, before the digestive tract is indi- cated. But little attention was devoted to the mode of development of the compound eyes. They are then very small black spots, the rudimentary corneal lenses few in number, and conical. The black retina is underlaid by a white mass; plate 4, fig. 4 represents one of the ocelli at or soon after exclusion from the egg; the external region is clear und made up of about twenty elongated epithelial cells, with a distinct refractive nucleus and granules; whether these are pigment cells or not we did not farther observe ; underneath this area is the dark pigment mass in which no cells could be detected with a 4 objective and B eyepiece ; the ends of the epithelial cells seem to sink into the mass. Development of the nervous system.' After a number of unsuccessful attempts at discovering the first indications of the nervous system, I at length discovered, in thin sections kindly made for me by Prof. T. D. Biscoe, the nervous tract in a transverse section of an embryo in an early stage of development, corresponding to that figured on plate 6, fig. 10, of my first memoir. The period at which it was first observable was posterior to the first blastodermic moult, and before the appearance of the rudiments of the six pairs of cephalothoracic limbs (gnathopods). The primitive band now entirely surrounds the yolk, bemg much thicker on one side of the egg than on the other, the limbs budding out from this disk-like, thickened portion, most of which represents the ectoderm. At the time the nervous cord was observed it was entirely differentiated and quite distinct from the surrounding tissue of the ectoderm.” At a later stage in the embryo, represented by plate 5, fig. 16, in my first memoir, at a period when the body is divided into a cephalothorax and abdomen, and the limbs are developed, by a series of sections made parallel with the under surface of the body, I could 1The principal points in this section were originally ? Plate 4, fig. 3, represents the nerve cells, and fig. 3a, printed in a short notice in the American Naturalist, July _ the cells of the mass of connective tissue in which the two 1875, 1x, 422. cords are embedded, from a freshly hatched larva. 38 A. S. PACKARD, JR., ON THE ANATOMY make out the general form of the main nervous cord. Plate 3, fig. 3, shows the general relations of the cord to the body. It is large and broad, with three well-marked pairs of consolidated ganglia in the abdomen, the two basal ones supplying the nerves for the first and second abdominal feet. There are in the cephalothorax six pairs of consolidated ganglia, the commissures being as yet undeveloped; the ganglia are indicated by the minute openings in front of and behind each pair of ganglia. The ganglia of the first pair of feet could be clearly distinguished; the brain or cephalic ganglion is probably repre- sented at fig. 31; fig. 3a, the same enlarged. The number of ganglia, throwing out the brain, is nine, corresponding to the six pairs of cephalothoracic feet and the two abdominal segments, there being at this stage but two pairs of appendages in the abdomen. The next important stage of development is seen in longitudinal sections of the larva after hatching, and when the digestive canal is marked out. To show the ganglia best, the section should be made on one side of the median line of the body, so as to pass through the middle of the ganglia on one side. Plate 3, fig. 2, shows a section thus made and stained with carmine ; the nervous ganglia remaining white are very clearly indicated ; the commissures are not shown, but they are now developed, since the ganglia are mostly separate. Now if we make a longitudinal section of the young horse-shoe crab when a little over an inch long, the disposition of the nervous cord is exactly as in the full grown individual, as figured by A. Milne-Edwards; see also our representation on plate 3, fig. 1, br, oer. The nervous ganglia are then united into a nearly continuous nervous collar, the opening in front being filled up by the brain or cephalic ganglion." Turning now to the nervous system of the larva (plate 3, fig. 2), the section here figured shows a most important and interesting difference as regards the ganglia which supply nerves to the appendages of the cephalothorax. They are at this time entirely separate, the spaces between the four posterior ones, which are connected by commissures, being as wide as the ganglia themselves are thick. There are behind the oesophagus six ganglia, corresponding to each of the six pairs of gnathopods; while the brain is rather larger than the others, and the first post-oesophageal ganglia are the smallest of the six, corres- ponding to the more diminutive size of the first pair of gnathopods. Reference may also be made here to plate 4, fig. 8, which shows the mode of origin of the nerves distributed from the first post-oesophageal ganglion to the feet; this section certainly very clearly demonstrates that the first pair of gnathopods belong with the post- oral series, that they can in no sense be regarded as homologues of the antennae of other Arthropods, and that in fact there are no antennae in Limulus, and without doubt in the Merostomata in general. But this subject has been already discussed in the chapter on morphology. It is not until after the second moult that the adult condition of the nervous system is attained, as Dr. Dohrn? has figured the separate ganglia in a larva which had evidently moulted once, the abdominal spine being well developed. This is certainly an interesting 1 For the nature of the brain and the oesophageal gang- 2Dohrn. Zur Embryologie und Morphologie des Limulus lionie collar, the reader is referred to the section of this polyphemus. He also represents the fourth pair of abdominal paper on the structure of the adult brain. appendages ; the larva has but three before the first moult. AND EMBRYOLOGY OF LIMULUS. 89 instance of the metamorphosis and cephalization of the nervous system, which is carried on internally, though the other organs and outer body-form remain unchanged. Development of the digestive canal. Unfortunately the mode of formation of the primi- tive digestive cavity or archenteron was not ‘observed, as eggs showing the formation of a gastrula could not be obtained. From this early period until after the larva has hatched the entire canal remains unorganized, the entire body-cavity being filled between the heart and nervous tract with yolk granules. The earliest stage when the enteric canal was observed at all was after the different parts — oesophagus, crop, stomach, intestines, and cloaca or rectum —had assumed their definitive shape. Plate 4, fig. 2, illustrates a section of the larva before its first moult, through the head. The space around the heart and digestive canal and over the nervous cord is filled with a very loose connective tissue; the cells, which are nucleated, spindle- shaped or triangular, being scattered, and forming a very open net-work of cells. In after- life the cells multiply, becoming very numerous and round or oval in form. This con- nective tissue extends throughout the entire body-cavity, the ovarian or testicular tubes ramifying throughout the mass, as well as the liver tubules. The section at plate 5, fig. 8, passes through the oesophagus and the crop. The former (figs. 10, 11, enlarged) is apparently filled with a few large epithelial cells, which represent the folds of the lining of the oesophagus. The walls of the proventriculus are very thick ; the lumen or passage is lined with the alternating larger and smaller folds of spherical epithelial cells, and with a thi semi-chitinous layer; the muscular layer, representing the endoderm built up around the originally invaginated ectodermal layer forming the fore gut or protenteron (plate 5, figs. 7, 7a), shows the epithelium of the intestine, the cells being very irregular in size and length. Origin of the liver. Plate 4, fig. 7, represents a section through the middle of the cephalothorax, passing through the intestine and one of the pairs of biliary ducts. The ducts are seen to open directly into the stomach, the duct being large, and at first there is a primary liver-tube, which bends downward at quite an angle before passing to the outer edge of the carapace. There are thus four primary biliary tubes, these in after life subdividing and ramifying throughout the body-cavity to an indefinite extent. The tubes are clear, transparent, with dark granules. Development of the ovary. The same section represented in plate 4, fig. 7, also passes two bodies, one on the outer side of and just below the heart, on each side of the mid-cut. These are the rudimentary ovaries. One section (fig. 8) shows the ovarian follicles attached to the walls of the gland, and, in fig. 8a, the ovarian eggs are just beginning to form, constituting a mass apparently free from the walls of the ovarian tubules. Structure of the testes and development of the spermatozoa. In our first memoir on Limu- lus we figured the spermatozoa; since then Professor Lankester has also described them. The argument that Limulus is not a Crustacean because the spermatozoa have tails is somewhat vitiated by the fact that those of the barnacles have exceedingly long, well 40 A. 8. PACKARD, JR. ON THE ANATOMY developed tails. We introduce a figure of those of a species of Lepas collected at Penikese, an island at the mouth of Buzzard’s Bay. The head is broad and flat, plainly sinuous seen sidewise, the centre being filled with granules. The spermatocysts (plate 3, fig. 5) are spherical, usually containing five spermatozoa. The tubules of the testis of Limulus are yellowish; this color is due to the presence of numerous yellow pigment granules. Fig. 4a represents the epithelial tissue forming the walls of the follicles (fig. 4). The spermatocysts (fig. 4d) are spherical, containing four immature spermatozoa, while the earlier condition of the same is seen at fig. 4b, where the sperm-cells are nucleated. We introduce for comparison drawings (fig. 6) of the spermatocysts of a decapod Crustacean (Libinia canaliculata), the spermatozoa (fig. 6/) being tailless and nucleated. Certain larger cells have a large nucleus, with a small nucleolus ; the nature of these cells we do not understand. BIBLIOGRAPHY. Van per Horven. Recherches sur lHistoire Naturelle et VPAnatomie des Limules, par J. Van der Hoeven. Avec sept planches. Leyde, 1838. fol. pp. 38. GEGENBAUR. Anatomische Untersuchung eines Limulus, mit besonderer Beriicksichtigung der Gewebe. Von C.Gegenbaur. Mit einer tafel. Besonders abgedruckt aus dem 4. Bande der Abhandlungen der natur- forschenden Gesellschaft in Halle. Halle, 1858. 4°. pp. 24. Locxwoop. The Horse-foot Crab. By Rev. 8. Lockwood. American Naturalist, rv, July, 1870. Packarp. The Embryology of Limulus polyphemus. By A. 8. Packard, Jr. American Naturalist, Iv, pp. 257-274. July, 1870. American Naturalist, rv, pp. 498-502. October, 1870. Proceedings Bost. Soc. Nat. Hist., June, 1871. Vol. xtv, p. 60. On the Embryology of Limulus polyphemus. By A. 8. Packard, Jr. Proceedings American Association Ady. Science, 19th Meeting, Troy, N. Y., July, 1871. 8°. pp. 8. Morphology and Ancestry of the King Crab. By A. S. Packard, Jr. American Naturalist, rv, pp- 754-756. Feb., 1871. The Development of Limulus polyphemus. By A. 8. Packard, Jr. Memoirs Bost. Soc. Nat. Hist., m, pp. 155-202. March, 1872. Further Observations on the Embryology of Limulus, with Notes on its Affinities. By A. 8. Packard, Jr. Amer. Nat., vu, pp. 675-678. Noy., 1873. Proceedings Amer. Assoc. Ady. Science. Port- land Meeting, 1874. On the Development of the Nervous System in Limulus. By A. 8. Packard, Jr. Amer. Nat., IX, pp. 422-424. July, 1875. On an Undescribed Organ in Limulus, supposed to be renal in its nature. By A. 8S. Packard, Jr. Amer. Nat., rx, pp. 511-514. Sept., 1875. Structure of the Eye of Limulus. Amer. Nat., xiv, pp. 212-213. March, 1880. Internal Structure of the Brain of Limulus. Amer. Nat., xtv, pp. 445-448. June, 1880. Van Benepen. De la place qui les Limules doivent occuper dans la Classification des Arthropodes apres leur developpement embryonnaire ; par Edouard van Beneden. Communiqué a la Soc. Ent. de Bel- gique, 14 Oct. 1871. Gervais, Journ. Zoologie, 1, 1872, pp. 41-44. Annals and Mag. Nat. Hist., 1872. Dourn. Untersuchungen tiber den Bau und Entwickelung der Arthropoden. Von Anton Dohrn. Abdruck aus der Jenaischen Zeitschrift Wissensch., Band v1, Heft 4. pp. 582-640. 1871. Mitne-Epwarps. Recherches sur Anatomie des Limules. Par A. Milne-Edwards. Annales des Sci- ences Nat., xvi, pp- 67. 11 plates. Noy. 1872. Commission Scientifique du Mexique. AND EMBRYOLOGY OF LIMULUS. 41 Owen. Anatomy of the King Crab. (Limulus polyphemus Latr.) By R. Owen. London, 1873. Trans. Linn. Society, London. 5 plates. 4°. pp. 50. Lankester. Mobility of the Spermatozoids of Limulus. By E.R. Lankester. Quart. Journ. Mier. Science. Oct., 1878. pp. 453-454. See also Strauss-Diirckheim’s Traité d’ Anatomie Comparative. 1842. Owen’s Lectures on the Invertebrate Animals. 1843-1855. Woodward’s papers on Merostomata. Palaeontol. Society. 1866-1878. Huxley’s Anatomy of the Invertebrate Animals. 1877. W. Grenacher’s Untersuchungen tiber das Sehorgan der Arthropoden. 1879. EXPLANATION OF THE PLATES. Prats I. Fig. 1. Under side of a Limulus, a little over two inches long without the spine, injected to show the abundance of the arterial twigs in the limbs and caudal spine as well as the body. The injection was made at Penikese by the late Edwin Bicknell. J. 8. Kingsley, del. Fig. 2. Camera lucida drawing of a living larva, showing the circulation of the blood-corpuscles in the right under-side of the abdomen and on the left first abdominal limb. Author, del. Fig. 3. Camera lucida drawings, showing the actual course taken by the blood corpuscles in the first abdominal appendage of the same larval Limulus. The arrows show the direction of the currents of blood, with the corpuscles; the blood passing from the heart down along the inner side of the appendage, and passing by tortuous, irregular courses around by the outside, back along the base, and returning to the peri- cardial chamber through the venous opening. This mode of circulation is much as we have seen take place in the amphipodous Crustacea, Author, del. Prater) ET. Fig. 1. Transverse section of adult male Limulus, natural size, through the proventriculus [pr], showing the cone [c], the oesophagus [oe], and the brain [07]; @, aorta, or frontal artery; col, collective venous sinus. From a drawing made for the author at Penikese by P. Roetter. Fig. 2. Section through the cephalothorax in front of the heart, brain, and first pair of gnathopods ; m, muscles. J.S. Kingsley, del. Fig. 3. Section through the cephalothorax behind the first pair of gnathopods; Af, heart; m, great longi- tudinal adductor muscle; cp, supraneural cartilaginous plate protecting the central nervous system. The latter not shown. J. S. Kingsley, del. Fig. 4. Transverse section through the abdomen, showing the second abdominal, or first respiratory, foot ; ht, heart, beneath which is the intestine; 4, origin and middle of branchio-cardiac veins, which carry the blood from the limb to the heart. J. S. Kingsley, del. Prats III. Fig. 1. Longitudinal section through a Limulus about two inches long, exclusive of the caudal spine; ht, heart; m, mouth, leading by the oesophagus to the proventriculus [pr]; cone, proventricular cone ; sé, stomach; im, intestine; a, anus; br, brain, or supraoesophageal ganglion, behind which is a part of the oesophageal ring [oe.7]; ng, ganglionated cord; ct, supraneural cartilaginous plate; enlarged about twice. Fig. 2. Longitudinal section through the larva of Limulus on one side of the heart and digestive tract, passing through the brain and cephalothoracic ganglia; 67, brain; the six other ganglia [1-6] separate from one another, and afterwards consolidate to form the “oesophageal ring”; 1, the first ganglion which supplies a pair of nerves to the first pair of gnathopods. [Compare plate 4, fig. 7, gn.] 42 A. §. PACKARD, JR. ON THE ANATOMY Fig. 3. A horizontal section through the embryo long before it hatches, before the body has become flat- tened, before the heart and digestive canal have appeared, and soon after the embryo has reached the stage represented by plate 4, figs. 19, 19a, of our first memoir, There are six cephalothoracie ganglia [I-VI] besides the brain, and three abdominal ones [I-III]; the first two abdominal ones corresponding to the rudiments of the first and second abdominal appendages. 1-6, the six pairs of gnathopods; I, II, the two pairs of abdominal legs. Fig. 3a. Enlarged view of the brain [?], the nerve cells [4] forming the ganglion, which is enveloped by connective tissue cells [ct]. (Is it these latter which are destined to form the nucleogenous bodies of the adult brain ?) Fig. 4. Follicles at end of a seminal tubule of testis of Limulus; 4a, epithelial cells of seminal tubules, nucleated and highly refractive; x Tolles’ 1 objective C eye piece, magnified 725 diameters; 46, amber- colored pigment cells of testis; 4c, similar but larger cells; 4d, spermatocysts of Limulus; 4e, cells associated with the spermatocysts, with a large nucleus and a distinct nucleolus; xX Hartnack No. 9, B eyepiece. Fig. 5. Spermatocyst of a barnacle [Lepas], 5a, side view, and 54, front view, of a spermatozoon of the same; X 7yB. Fig. 6. Spermatocysts of different shapes, a, 4, c, d, ¢ (X +B), and [f'] tailless spermatozoon of Libinia canaliculata; X Hartnack No. 9. Fig. 7. Supposed renal glands of Limulus; 8, one of the four lobes extending upwards from the main stem [@]; ¢, chitinous bases of the gnathopods. 7a, reddish pigment bodies coloring the cellular mass of the gland, the cells being nucleated. 74, 7c, two amber-colored yellow secreting cells scattered through the cel- lular mass, composed of nucleated cells, as at 7a; X Hartnack No. 9, B. Fig. 8. Tubules of liver of living Limulus; x 30 diameters; 8a, a parent cell of the smaller liver cells; the shaded ones horn-colored, those unshaded clear; 84, free liver cell; 8c, the same with pale nuclei. 8d, liver cells of Panopeus; X } Tolles B. Fig. 9. Sections of liver tubes stained with carmine; X } A. Fig. 10. End of a liver tubule of Homarus umericanus; * 1B. Fig. 11, lla. Striated muscle near insertion of leg of Limulus; x 1} C (725 diameters). Fig. 12, 12a, 126. Sections through minute peripheral arteries near the compound eye; X } A. Fig. 18. White fibrous cartilage of the supraneural cartilaginous plate; longitudinal section showing the fibres on one edge and the nucleated cells in the dense structureless portion. Fig. 14. Portion of the blastoderm lying next to the chorion [ch] with yolk granules; 14a, the same after the outer layer [o] has begun to moult, the cells beginning to. wrinkle on the edges, and being without the protoplasmic granules [14] seen in the deeper layer of blastodermie cells; 14e, vertical, and 14d, profile view of the same cells after moulting, the walls contracted and wrinkled, and with the nuclei partly absent or absorbed; X 4 A. Pirate IV. Fig. 1. Section through the larva some time after hatching; At, heart; ivf, intestines; nc, double nervous cord; the muscular system well developed; am, undeveloped adductor muscle. The parenchym of the body consists of incipient connective tissue and liver-cells. Fig. 2. Section through the cephalothorax of the same larva as represented at Fig. 1, the section passing through the compound eye [cc], the heart [At], proventriculus [pr], and the double nervous cord; as yet the neurilemma is unformed, the nervous cord not being enveloped by it, this being represented by connec- tive tissue [c¢]. Fig. 3. Nerve cells of nervous cord of a freshly hatched larva, before the digestive tract and heart are indicated ; 3a, connective tissue cells enveloping the nervous cord of 3; from these cells the neurilemma is probably formed. Fig. 4. An ocellus of a larval Limulus, showing the epithelial cells [e] and the dark pigment of the retina [7]; X 1B. The ocelli are at this stage quite far apart. Fig. 5. Section of nervous cord [7] embedded in connective tissue [et], the section passing through the body near the eyes of an advanced larva, in which the heart and digestive tract are developed. Fig. 6. Section through a ganglion [g] of the same larva as represented in Fig. 5, the ganglion com- pletely surrounded by the connective tissue [ct]. AND EMBRYOLOGY OF LIMULUS. 43 Fig. 7. Section through an advanced larva showing the origin of a pair of liver ducts from the intestines [int], and a single primitive liver-duct [/7], of which there are two pairs; At, heart; gv, a pair of nerves sent from the ganglion [g] to each second gnathopod. Fig. 8. Section of an ovarian tube, with the ovarian follicles on the side; 8a, another section showing the cell-eggs. PLATE V. Fig. 1. Section through the vertical folds or teeth of the fore part of the crop or proventriculus; m, mus- cular layer; pe, pavement epithelium ; ce, columnar epithelium ; ch, chitinous layer. Fig. 2. The central tooth of Fig. 1 magnified; x 4 A; lettering as before. Fig. 8. Columnar epithelium from section of end of the oesophagus. Fig. 4. Nucleated cells and fibres of the pavement epithelium of intestine; x } B; 4a, the same somewhat enlarged. Fig. 5. Section from posterior part of the oesophagus, showing the chitinous layer [ch]; the empty spaces in the lobes surrounded by columnar epithelium [ce ]; the pavement epithelium [pe] supporting the former. Fig. 6. Pavement epithelium of rectal folds. Fig. 7, 7a. Section of stomach of larva where the chitinous lining is absent, showing the irregularity of the epithelium. Fig. 8. Section through an advanced larval Limulus, the figure indicating only the portion lying under the central lobe; At, heart; pr, proventriculus; oe, oesophagus; g, first pair of ganglia, the oesophageal ring not yet being consolidated; gn, nerve to the first gnathopod [gp], demonstrating that the brain does not supply the nerves to the first pair of feet; cf, connective tissue, the neurilemma not yet formed. Fig. 9. Section of inner part of the proventriculus showing the larger teeth [¢] alternating with the smaller ones [¢]; X } A. Fig. 10. Section through the oesophagus; X } A. Fig. 11. Another section of the same. Fig. 12. Section through the simple eye or ocellus of Limulus; 3, third layer of the integument, clear and laminated; X }.A; 2, second layer of integument finely granulated and laminated; pc, pore canals filled with connective tissue [ct]; cl, corneal lens; , cup-shaped depression in the base of the corneal lens. Fig. 13. Another section of an ocellus more enlarged; lettering as in fig. 12. Fig. 14. Section through an ocellus showing the relations of the ocellar nerve and its branches [oem]; 1, first and outer clear layer of the convex cornea; 2, second layer, finely laminated; 3, third, clear layer, with a few lamin; rt, pigment layer in retina; A, hypodermis, of which the retina is a modification; cd, corneal lens; ct, connective tissue. Prats VI. Fig. 1. Section through the entire compound eye of Limulus, stained with picro-carmine, showing the relations of the cornea and corneal lenses and retina to the branches of the optic nerve; cor, cornea; 1, outer clear, 2, middle laminated, and 3, inner clear portion of the chitinous cornea, seen to extend into the integu- ment; pe, pore or nutritive canals filled with connective tissue; c/, corneal lenses; rt, retina; hy, hypodermis, of which the retina is a modification. Below is the mass of connective tissue cells [ct], through which the tortuous branches of the optic nerve pass and impinge on the ends of the conical corneal lenses; owing to the tortuous course of the nerve-fibres, they appear not to be continuous in the thin section of which this is a drawing. ov, ovary with cell eggs; ar, two arterial twigs; J, two liver tubes; ict, inner, darker brown con- nective tissue of the interior of the cephalothorax. Fig. 2. Sections of corneal lenses in the middle of the eye; the retina has been removed by acid; ci, corneal lense: f, cup-shaped depression in base of lens ; 2a, the same from near the periphery of the eye, where the corneal lenses are longer and more oblique directed inwards towards the middle of the eye. Fig. 3. Epithelium of the retina around the end of a cone; rab, rhabdom; rei, retinal cells. Fig. 4. Section of two retinulas, with the rhabdom [rhab] in the centre; X 4A; 4a, a retinula [ret] ad with acid to show the twelve cells into each of which a ray of the rhabdom projects; x } B. 44 A. 8. PACKARD, JR. ON THE ANATOMY Fig. 5. Section of soft parts of ocellus of Limulus, showing the subdivisions and mode of termination of one branch of the ocellar nerve [on]; the branches are enveloped in connective tissue [cf]. The section passes on one side of the corneal lens. Fig. 6. Optical section of corneal lenses of Limulus, as seen through the transparent cornea, showing their slightly hexagonal appearance; X 50 diameters. Fig. 7. Artificial section through the eye of Asaphus, a trilobite, to show the close similarity to the cor- neal lenses of Limulus; X } B eye-piece. Fig. 8. Longitudinal section through the eye of Asaphus showing the corneal lenses; X } A. (Com- pare with Fig. 1, 2, 2a, the corneal lenses of Limulus.) Fig. 9. Longitudinal section through the eye of Asaphus gigas; cl, corneal lenses; pe, pore canal; rt? probable indications of the upper edge of the retina? Fig. 10. Section of part of the cornea of an Asaphus gigas which has been broken, showing several entire corneal lenses side by side. Fig. 11. Section through one side of oesophageal ring passing through the nerve to one of the gnathopods or cephalothoracic feet; n/, neurilemma; sp, space between neurilemma and the ganglion; nd, small nucleogenous bodies at top of section or upper side of oesophageal ring; Jgc, longitudinal group of large ganglion cells, extending along the outside of the oesophageal ring; gn, gnathopodal nerve ; magnified 30 diameters. Fig. lla. A large ganglion cell [/gc], surrounded by smaller bipolar ganglion cells, magnified 224 diameters. Fig. 12. Section through second abdominal ganglion, n, nerve to one of the abdominal feet ; fa, fibres of central nerves; ge, layer of large ganglion cells and nerve fibres arising from them; % 30 diam. Fig. 13. Section through the same ganglion showing origin of nerve [7] to second abdominal foot. Fig. 14. Section through the sixth or last abdominal ganglion passing through the nerves [7]; 2f, shows the nerve fibres arising from the large ganglion cells and reinforcing the nerves making up the central mass, which is seen to be composed of the union of two separate nervous ends; X 30 diameters. Fig. 15. Transverse section through the middle of the brain, showing the arrangement of the fibres [7a], nucleogenous bodies [7] and groups of large ganglion-cells [Zc]. Prater VII. Fig. 1. Section through upper part of brain of Limulus, passing through the optic nerves [op 1]; ¢ m, groups of cells from which the optic nerves appear to arise; y, Y-shaped bundle of nerve-fibres ; 7 0, nucle- ogenous bodies on each side of the brain; 7 g ¢, groups of large ganglion-cells ; em, commissures uniting the brain with the oesophageal ring; ” 7, neurilemma. The lettering the same for all the figures. Magnified 15-20 diameters. 1a, A large ganglion cell of Limulus; 14, the same of the lobster; 1c, small ganglion cells of Limulus; 1d, the same of the lobster; all magnified 225 diameters to show their relative size and form. Fig. 2. Section lower down, just grazing the under side of one optic nerve; the nucleogenous ruffle- shaped bodies in front as well as on the sides; the Y-shaped bundle of nerves nearly merged with the rest of the fibrous portion ; the groups of large ganglion-cells [Zgc] limited in extent. Fig. 3. Section of portion of brain magnified 30 diameters showing the origin of left optic nerve; f, bundle of nerve-fibres, without cells and nuclei; 24, a nerve of which an enlarged section is seen at fig. 3a, showing the nucleated fibres cut across; 77, a large bundle of nerve-fibres, of part of which, fig. 3, is an enlarged view, showing the nucleated fibres in section, and seen longitudinally with a few nuclei visible ; ‘X 225 diameters; 3c, a group of large ganglion-cells, with branched nerve-fibres arising from them; n, nucleus ; ne, nucleolus, magnified 225 diameters; 3d, a single large ganglion cell, giving origin to a branch- ing nerve. Fig. 4. Section of right side of brain passing through the ocellar nerve, 0 ¢ 2; ¢, commissure with large ganglion-cells and fibres at this point, surrounded by a distinct neurilemma; a, artery passing down the back of the brain. Magnified 30 diameters. Fig. 5. Section of brain of Limulus through the ocellar nerve [o ec 7] and the two tegumental nerves [tn]; ¢, section of lower part of commissure to oesophageal ring; fa+ the small area on the right side composed of nerve-fibres, showing the asymmetry of the brain; magnified 30 diameters. AND EMBRYOLOGY OF LIMULUS. 45 Fig. 6. Section of left side of brain of Limulus, below the ocellar nerve, passing through the lower set of tegumental nerves. The fibrous area [ fa] much branched, and still much greater than on the right side [fv]. A number of large ganglion cells are present at the posterior outer portion of the brain. Magnified 30 diameters. Fig. 7. Section through left side of brain of Limulus, below any of the nerves, quite near the base of the brain, and showing how much the nucleogenous bodies have encroached on the fibrous area [ f a]. Figs. 1 and 2, were cut from the same brain; figs. 3, 4, 5,6 and 7 from another brain; and were selected from about ninety other sections. Norr.—All the figures in plates 1-7 were drawn by the author, except plate 2, fig. 1, drawn by P. Roetter ; and plate 1, fig. 1, and all the figures on plate 2 (except fig. 1), which were drawn by J. S.Kingsley. ~ ZooLoGicaAL LABORATORY OF Brown UNIVERSITY, Providence, R. I., May, 1880. ERRATA. Page 10, line 30, for Arthopoda read Arthropoda. Page 16, line 1 from bottom of footnote, for Tottennia read Tottenia. Page 23, line 25, for (Fig. 9, rt) read (Fig. 9, rt ?). Page 26, line 6 from bottom for “ or lens-epithelium ” read “lens-epithelium.” Page 29, line 14, for analagous read analogous. Page 29, line 37, after the word but dele that. Annivers. Memoirs Boston Soc NatHist — Packard, Plate J Packard and Kingsley, del =< ~ Say os "Mes en anal CIRCULATION OFF AInEUE: A Meisel lit BLOOD IN THE KING CRAB Annivers. Memoirs Boston Soc Nat Hist Packard Plate J] 1S Kingsley. and P Roewer. del AMeisel Lith SECTIONS THROUGH ADULT KING CRAB. Annuvers. Memoirs Boston Soc. Nat Hist Packard. Plate III AS Packard, del. AMeisel lith ANATOMY AND HISTOLOGY OF THE KING CRAB. » Annivers.Memoirs Boston Soc.Nat Hist Packard, Plate lV AMetsel lith AS Packard.del, ANATOMY OF THE LARVAL KING CRAB. Packard, Plate V Annivers. Memoirs Boston Soc Nat Hist sel. lith AMe AS Packard, del CRAB. EYE OF THE KING AND _ CANAL TS LLViE DIGE HISTOLOGY OF THE ‘ ny F ' = t 5 ' , ' l i i i 5 i : ; : i i ud ‘ i 4 i { = i A gf a 7 conn j ! oy : a i j aa 5 , 5 1 or . , t t - ’ + et : D “i ‘ I ‘ 7 n Fi . i t , q 1 i 0 « , ’ - = ' J 5 : = H 7 : ! noes ! ‘ A ' ‘ at 7 ~ 2 1 a ; ‘ A ys ' 5 5 = i ss ‘ a . = i ¢ : ; i 5 a “aie: U ‘ x 7: 7 ‘$ i] _ i = bei ‘ : i at ” H ' 1 Ss ' 7 a we : er i : Te : i “Ss - - Ly Donn - - : ' , “st re 1 Mi 7 ‘ y ip =_h 7 : y My 7 D \ } : 5 ' 7 7 7 . rt x fh : dow ne? i td 7 = ve I 7 a \ ar) : 1 i i a = yO 1 7 Fs ive, 2 7 1 7 7 ay : a I * on i ‘ - ‘ ui ie ; ae i : - 4” 2 - a: iw ft os AJ i 7 1 : 7 7 a, ras : o ie i ew | Les I i s : = i oe te 4 i i : me 0 iJ , r a in ; , 7 : ae ; y y i 4h Hi : So : 1 , Ae o uJ a 1 v3 i ; 4 v , ’ - r ' - i 7 i a i = ¢ i : . A i es 1 Ga : ay ~ i D 4, i - S o i ‘ : ipa i 7 “> oe , 1 7 ‘ : i ; - : ‘ - P - a2 = ; ¥ yet 7 " 1 7 i y m1 - ny in - ni . ' ; F : : sf = i+ : i 4 i i ‘® i i A ' I p 5 : 5 - 1 i 5 v i a Y : * 41 : , : Annivers.Memoirs Boston Soc Nat Mist Packard, Plate VI . AS Packard, del AMeisel Lith STRUCTURE OF THE EYES AND NERVOUS GENTRES OF THE KING CRAB. . 0 at ‘ 4 + i = Annivers Memoirs Boston Soc Nat Hist Packard, Plate VI. ODTL 4. AS Packard, del. AMeisel, ith STRUCTURE OF THE BRAIN OF THE KING CRAB 1830, ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY, 1880. CONTRIBUTIONS TO THE ANATOMY OF THE MILK-WEED BUTTERFLY DANAIS ARCHIPPUS (Fabdr.). By EDWARD BURGESS, SECRETARY OF THE BOSTON SOCIETY OF NATURAL HISTORY. BOSTON: PUBLISHED BY THE SOCIETY. 1880. CoNTRIBUTIONS TO THE ANATOMY OF THE MILK-wEEeD Butrerriy (Danais Archippus Fabr.). By Epwarp Burcess. GENERAL students of comparative anatomy wishing to gain some knowledge of the structure of the Lepidoptera find their way blocked by the lack of some suitable modern monograph on any species of this group to which they may turn. I have, therefore, attempted to fill this gap to some extent by a preliminary sketch of the anatomy of the Milk-weed Butterfly (Danais Archippus Fabr.), choosing this species as a type of the order, partly on account of its large size, common occurrence and wide distribution — for it is found nearly the world over— and, partly, because the anatomy of no species of Danaidae has yet been studied. The present paper treats only of the general anatomy of the perfect insect, leaving the consideration of the larval and pupal structure and development, as well as the histology, to the future investigations of myself or others. The special student, already acquainted with the present state of our knowledge of but- terfly anatomy, will find new observations on the maxillae and suctorial mechanism of these insects; on the course of the dorsal vessel; and on the structure and mechanism of the male genital armature. I. Structure OF THE EXOSKELETON. Heap. (See pl. 1, figs. 1 and 5.) The roof of the head is formed by the epicranium, which bears on its sides the large eyes, and, in front, the antennae. The posterior aspect of the epicranium is called the occiput, while the front is the region immediately above and between the antennae. The small triangular areas, on either side, and below the face are the cheeks or genae (qg.). The face includes the region below the antennae, and is formed chiefly by the large, vaulted clypeus (c.), whose arc-shaped lateral boundaries are well-marked, while above it passes directly into the epicranium, without any suture or line of demarcation as found in many insects. The compound eyes (oc.) are very large and protruding ; the ring-like ridges on which they are borne are termed the orbits (or.). Sim- ple eyes, or ocelli, are not found in the butterflies, although there are two in moths. The antennae articulate with the epicranium by a “ ball and socket” jot; the ball being formed by the large first and smaller second antennal joints (see fig. 3), is deeply inserted in the antennal fossa or socket. The succeeding joints are cylindrical, and of much less diameter than the ball; they are about forty-five in number, and of nearly uni- form size till towards the tip, where the last ten gradually expand, becoming also shorter, and form the * club.” which characterizes the antennae of the diurnal Lepidoptera. 4 BURGESS ON THE ANATOMY To the slightly concave lower edge of the clypeus is soldered the upper lip, or labrum (lb.), a small, flat triangular piece, with a somewhat projecting apex, which overlies the base of the proboscis. On either side the labrum, and soldered to the cheeks, are seen. two small triangular, almost thorn-like, pieces, the rudimentary mandibles (md.). They are immovable and of course functionless ; their inner margin bears a row of stiff bristles. Behind the mandibles are the mazillae (mz.), of compensatingly enormous development, forming the tubular proboscis, used by the insect to suck up the honey or other vegetable juices forming its food in the imago stage. Each maxilla is a long, slender, flexible organ, tapering gently to the tip, and having a deep groove along its inner surface, which surface being applied to that of the opposite maxilla, and locked in that position by hooks provided for the purpose, a canal is formed traversing the proboscis from base to tip. When not in use the proboscis is coiled into a spiral like a watch spring, and lies under the head, protected on either side by the large hairy labial palpi, which are specially developed for this service. In the Milk-weed But- terfly the proboscis is about 15 mm. long, and at the base, about 0.6 mm. wide. The tip is rather bluntly pointed. Superficially (pl. 2, fig. 8), the proboscis presents a sort of coat of mail appearance from its composition of an immense number of rings, or rather segments of rings, since a portion on the inner side is of course wanting. The separation of these rings by intervening and more yielding spaces of cuticle, is evidently to permit the spiral coiling of the proboscis, while imparting at the same time the necessary stiffness. The. rings are not perfectly regular, but are here and there broken, or branch and anastomose. They are themselves made up of quadrangular plates jomed side to side, except near the inner edges of the maxillae, where, especially in front, they become separated, more or less hexagonal and irregularly scattered ; on the hinder side each plate sends off a stout, spine- like process, which is directed inwards (see fig. 10). These plates, as will be seen in seec- tions of the proboscis (figs. 9, 10 and 11), are the bases of little pyramids, or in some regions, stout nail-shaped bodies imbedded in the cuticle, each one in its own prismatic block of cuticle, which probably corresponds to a single underlying hypodermic cell, its matrix. The blocks may occasionally be demonstrated by the separation of one of them from its neighbor in the process of section cutting, (fig. lle). The dividing boundary line between the blocks can also generally be seen in successful sections (see figs. lla, 6 and ¢; cu. cuticle, and hy. hypoderm). The cuticular lamination too is evident in such sections. The pyramids are opaque, black, or dark brown, and the rest of the blocks colorless and transparent. Dotted over the surface of the proboscis but more thickly toward the tip are little cir- cular plates with a minute papilla in the centre (see fig. 8). These are regarded as modi- fied hair structures, and in many butterflies are curiously and greatly developed,! forming toothed or notched spines, believed by Breitenbach to serve as the teeth of a saw or file, enabling the insect to work the proboscis through plant tissues in search of the contained juices. These organs are reénforced in the case of the Orange moth ( Ophideres fullonica), by large spines developed from those which serve simply to lock the maxilla together in 1See Breitenbach, Katter’s Entomol. Nachr. v, 238; Report on Cotton Insects, U. S. Agric. Dept. 1879, p. 86 Arch. Mikr. Anat., xv, 8 and xvi, 308. Also F. Darwin, (proboscis of Aletia). Quart. Journ. Mier. Sci., xv, 385, and F. J. Comstock’s OF THE MILK-WEED BUTTERFLY. 5 other Lepidoptera. They are too small for mechanical use in Archippus, and perhaps the papillae are, in this case, organs of taste or touch, as suggested by Fritz Miiller, which appears more likely from the fact that they occur, though in much less number, within the central canal of the proboscis. This canal is not lined with rows of little blocks like the exterior, but with the much narrower solid edges of semiannular plates, which give the canal the appearance of a large trachea (fig. 9). In transverse sections it is seen (fig. 10) that the ends of these semiannular plates form behind hooked teeth, which are snugly dove-tailed together, while their anterior ends are produced into long spines which simply interlock like the fingers of the two hands. These arrangements serve to hold the two maxillae together to form a continuous tube. Each maxilla is traversed through its whole length by a nerve and a trachea (figs. 9 and 10, 2. and ¢r.), both giving off numerous lateral branchlets to the muscles which fill the rest of the interior of these organs. The muscles form narrow bands and are arranged in two sets, both running from the anterior to the posterior aspect, and descending in this course. One set, however, is inserted on the outer side of the anterior face, while the other is inserted on the inner, and both converge in their downward and backward course, and thus, when seen through the wall of the maxilla from the front, they form a series of Vs one above the other. Seen laterally, only one set is visible at a time, diagonally cross- ing the maxilla, as shown in the section (pl. 2, fig. 9). From the attachment of these mus- cles, their apparent action is to shorten the posterior wall of the maxilla, which of course must produce the spiral coiling of the organ. This unfortunately, leaves the explanation of its extension in the dark, unless we suppose elasticity, or possibly the injection of the somatic fluids, to bring this about. Many authors have assumed that the proboscis was coiled by its elasticity, but if we admit the possibility of such action at all, we can as easily require it to account for extension as for flexion. It seems more probable, however, that we fail to see, or to correctly interpret, some proper muscular mechanism for both movements of the proboscis." Maxillary palpi are often well developed in Lepidoptera, though in some they are wanting, or at least reduced to a little wart on the base of each maxilla (fig. 3, ma.p.). The labial palpi are, as already said, very large, and conceal the proboscis in repose The first jomt is short, stout, rather pedicellated, and is curved upwards ; the second is long, tapering somewhat from the base to the tip; and the last joint is small and pointed. THorax. A slender neck well separates the head from the thorax, whose first somite, or prothorax, (fig. 1, 1.), is very small and feebly developed, and the homologies of its skele- tal parts are not easy to recognize. The scutwm (fig. 1, s.") is divided by a median furrow into two tumid, bolster-like pieces (called by Mr. Scudder the pro-thoracié lobes), entirely separated from each other. Behind them is a small triangular plate, representing the scutellum ; and behind this are two rounded and knob-like processes which form an articu- lar surface resting in a corresponding depression in the mesothorax. These probably rep- 1T have found few references to the myology of the lepi- See also his article in Todd’s Cycl. Anat. 11; and Gersteldt. dopterous proboscis; the most extensive is that of Newport, Ueber die Mundtheile der saugenden Insecten, Dissert. Nery. System of Sphinx ligustri, Phil. Trans., 1834, p. 398, inaug. Dorpat, 8°. 1853. whose whole conception, however, seems to me erroneous. 6 BURGESS ON THE ANATOMY resent the post-scutellum. A continuous ossified collar encircles the prothorax beneath, composed of the episternal and sternal elements fused into one piece. Behind and beneath this collar are attached the long cylindrical coxae of the first pair of legs. Epimera are not recognizable. A broad membranous neck separarates the prothorax posteriorly from the mesothorax (u.). The scutum (s.?) in this segment is very large, oblong, and vaulted. In front there is a rather deep pentagonal depressed area, with a rounded central portion, fitting against the articular surface between the meso- and pro-thorax, as already described. This area is perhaps the praescutwm, and is, as it were, wedged into the scutum. Just below the ante- rior corners of the scutum are attached, by a small stalk, two leaf-like epaulets, the pata- gia’ (pt.). These are nearly semicircular in shape, with a conical piece projecting back- ward from the lower corner. The great development of the patagia is characteristic of the Lepidoptera. Behind the scutum, which is slightly emarginated posteriorly, is the lozenge shaped, tumid scutellwm (sm.?), whose lateral corners project under the base of the scutum. A narrow membranous area separates the scutellum from the post-scutellum (psm."), which is an arch shaped piece mostly concealed by the postthorax ; it sends a long process forward on each side under the scutum and reaching the epimera, while behind it extends into the interior of the thorax for the attachment of the great thoracic muscles (see fig. 2, /.m.). The episternum (eps.”) is triangular, with two sides convex, its base resting on the stermwm (st.*), which is an irrregularly six-sided, transverse piece coy- ering the chest. The sides of the prothorax behind the episterna are formed by the epimera (epm.”) shaped something like an hour-glass in outline, beg emarginated deeply above for the sub-alar membrane, and, beneath for the cowae (cx.”) of the second pair of legs, which are immovably united with the epimera and sternum. The scutum (sm.°) of the meta-thorax (111.) is divided into two lateral triangular wedges somewhat like the prothoracic lobes, between which in front the scutellum and postscutel- lum of the mesothorax are wedged, and behind the triangular seutellwm of its own seg- ment (sm.*). The episterna (eps.*) and the sternum show no dividing suture, and embrace the base of the coxae above and in front; while, in similar fashion, the epimera (epm.*) send projections backwards above and behind. The shape will be better understood from the figures, than from any description. The roots of wings (w.! and w.? ) are inserted in broad, membranous areas occupying the sides of the meso- and meta-thorax above the epimera and below the scuta of those seg- ments. The hinder pair of wings in the male are distinguished by a sort of pocket, on the upper side, forming a small blister on the rib, known as the first branch of the median vein, opening by a narrow slit and containing scales and hairs.” The legs show the usual five divisions into the coxa, trochanter, femur, tibia and tar- sus. The first pair, however, are much smaller, and, indeed, functionless, as in all the higher butterflies. They also are different in the two sexes; the tarsi of the males are 1 Westwood, Newport and other authors have erroneously — eral good sections of scales were made, showing their upper- described the patagia as attached to the prothorax, and this and lower membrane, the former bearing the rib-like mark- is accordingly often repeated in our text books. Packard, ings. Fig. 6 on pl. 1 shows two of these sections —fig. 6 Guide to the Study of Insects, gives the correct statement. through the middle of the scale, and 6, a, lower down, pass- *In making sections through the wings at this point, sev- ing through the pedicel. OF THE MILK-WEED BUTTERFLY. ~I (rather indistinctly) two-jomted, the second joint bemg very small; while in the females there are four tarsal joints, the first quite large, much stouter at the apex, the next two very short, and the fourth or last very minute and indistinct. The first three joints in the female have each two spurs on their inner extremity. The fore tarsi are clawless in both sexes. The middle and hind pairs of legs are alike except for the somewhat larger size of the former. The coxal joints are conical, immovably united to the thorax. They are divided into two parts, the coxa and trochantine. ‘The tarsi are five-jointed, all very spiny beneath. The last joint has two long and rather straight claws. AsBpoMEN. Nine somites (fig. 1, numbered 1 to 9) are evident in the abdomen of the Lepidoptera. The first is small, forming a sort ‘of neck which is wider than high; the dorsum is developed into a large bolster, shield-shaped from above, and somewhat over- hanging the base of the second somite. The pleural region presents rather complicated folds, and there is no sternal ossification, leaving a broad membranous surface between the thorax and the sternum of the second abdominal somite. The next three somites increase gradually in height, but each is somewhat shorter than its predecessor. The sternal and dorsal regions are of about equal development. The second sternum shows underneath two shallow furrows, in which the knees of the last pair of legs seem to fit. The fifth and sixth somites decrease gradually in size. The last three somites require a different description for the two sexes. In the female the dorsum of the seventh somite is longer than the preceding, and the sternum is produced backwards to a point, and its posterior border emarginated. The eighth tergum is shorter than the seventh, and the whole som- ite much less high ; its flat sternum looks forward, opposing the hollow posterior aspect of the seventh ; thus forming with the latter a wide, cave-like vestibule, in which the orifice of the vagina is situated. The ninth, and last, somite is very small, and in repose, almost wholly retracted within the eighth. Inferiorly and laterally it is produced into two bluntly triangular lobes, or flaps, between which lie the openings of the digestive and reproduc- tive organs. The ninth sternum is reduced to a simple ring, connecting these flaps infe- riorly. In the male the seventh somite is simply smaller than the preceding. The eighth, however, is remarkably developed, for its sternum is produced laterally far beyond the tergum forming two false clasps wrth bifid tips, the inferior tooth being the stouter, and both teeth strongly incurved. The ninth segment resembles that of the female, except in being somewhat larger. To its sternum, however, are articulated the true male claspers, to be described farther on, and between these projects the penis. The anus lies within the flaps above the sexual organs as in the female. Il. Inrernat ANATomy. From this brief description of the exoskeleton we may pass to the internal anatomy of our butterfly. To best study it, the msects should be hardened for a few days in alcohol, made gradually stronger, and then some specimens should be cut with a razor into longi- tudinal halves, which will show the natural position of the internal organs. It is well to draw the razor slightly on one side of the median line, as in this way the first part of the diges- tive tract, the nerve chain and the dorsal vessel are left intact. Some preparations should BURGESS ON THE ANATOMY oe) also be made by merely cutting through the integument near the median line with a razor, and in places, with a fine pair of scissors, and then gently tearing it away on one side, thus leaving the principal organs perfectly uninjured, and in their natural position. By carefully removing the fat body and the tracheae they will, one by one, gradually become evident.!. A preparation thus made is figured on pl. 1, fig. 2. Of. course one single dissection will not show every point, as some organs must be removed in order to get at others beneath them ; thus in fig. 2, all the tracheae, one set of ovaries, the urimary tubes, etc., have been dissected out. It is therefore well to make several dis- sections, each having in view one or two organs more particularly, and the study of the separate preparations will give the knowledge of the whole internal anatomy. Besides these preparations, many sections, some coarse, and some thin, must be made, (as de- scribed in text-books of histology and microscopic technique), and mounted for study with the compound microscope. Many points in the anatomy of small parts of the body, and of course the histology in general, are only to be learned from such preparations. Tue ALIMENTARY CanaL AND rs AppENDAGES. The canal traversing the proboscis opens into a pharynx enclosed in a muscular sac, which occupies much of the lower part of the head. The sac itself is nearly round, and is hung in position by five principal muscles, (figs. 4, 5 and 7), two dorsal (d.m.), two lateral (/.m.), and a frontal ( fm.) which is really a pair of muscles closely united. A more feeble muscle is also inserted on the lower aspect of the sac. The sac itself is very muscular, and shows two principal layers of muscles, an outer, of longitudinal annular fibres, and an inner, of transverse fibres. The pharyngeal cavity extends obliquely upward in the sac, from front to back, and is much broader than high. The floor, or hypopharynz, is convex on each side of a median furrow, (fig. 5, kph.) and somewhat resembles in shape the human breast. The convex areas are dotted over with little papillae, which possibly may be taste organs, although I have not succeeded in making out any nervous supply. The cuticular layer of the hypopharynx is very thick, while that lining the superior wall of the pharynx is, on the contrary, delicate, and is thrown into slight transverse ridges. The suspensory muscles of the pharyngeal sac pierce the muscular layer of the latter, and are attached to its internal wall. At the anterior border of the pharynx is a triangular muscular flap, the epipharyna (fig. 5, ep.) overlying the opening into the proboscis, and serving as a valve to close the latter. The pharyngeal sac, as is evident from its structure, serves as a pumping organ to suck the liquid food of the animal through the proboscis, and force it backwards into the digestive canal, the process being as follows: The proboscis is unrolled and inserted in the nectary of a flower; at this moment the muscles which suspend the pharynx contract, and its cavity is thus extended, creating a vacuum which must be supplied by a flow of honey through the proboscis, into the pharynx. When the latter is full its muscles contract, the valve closes the aperture to the proboscis, and the honey is forced backward into the oesophagus. The pharynx is then again opened and the same process repeated. To prevent the food being sucked back from the oesophagus, it is probable that some of the numerous fibres in the muscular sac near the origin of the former can, by contraction, close its opening, but in any case as the proboscis presents a free tube, and 1 This work should, of course, be done under water, the small glass dish. preparation being pinned to the wax-covered bottom of a OF THE MILK-WEED BUTTERFLY. 9 the oesophagus leads into the closed alimentary canal, it is evident that the former offers the easiest route for a supply to fill the vacuum produced in the pharynx. The organ just described has hitherto escaped the notice of insect anatomists, and its functions have therefore been conjecturally ascribed to other parts. The so-called “ suck- ing stomach” thus received its name from the earlier writers, and when its structure was better known, and such a purpose negatived, the capillarity of the fine canal of the pro- boscis, and even a peristaltic action of the latter have been suggested to explain the power possessed by the butterfly to suck up its food.? At the upper extremity of the pharynx opens the narrow oesophagus and at the lower edge of the hypopharynx the common duct of the salivary glands discharges into the canal of the proboscis at its base. These glands consist of two tubes arising in the base of the abdomen, and passing, with many convolutions, on either side of the oesophagus, into the head. The glandular portion (fig. 2, s. gl.) of these tubes is about 40 mm. long, and the more slender anterior and non-glandular portion, or duct, (s.d.) about 12 mm. The two ducts unite into one in the base of the head; the common duct, as just said, opening below the hypopharynx. The oesophagus (oe.) is a slender and delicate tube leading from the pharynx above, and after piercing the nerve commissure between the brain and the succeeding ganglion, passes straight through the thorax into the abdomen, in the very base of which it opens, above, into the food-reservoir, and below, and a little farther back, into the stomach. The food-reservoir, (f.r.) or so-called sucking stomach, is a large, bladder-like sac, occu- pying the upper part of the anterior half of the abdomen. Its walls are delicately mem- branous, well supplied with longitudinal and transverse slender muscular fibres, particularly the former. Clothing the upper surface of the interior, more thickly in the median line, are long hair-like processes of the cuticle (pl. 2, fig. 12), whose points are directed for- ward, that is towards the neck of the reservoir. These processes have broad corrugated bases and end in long slender tips, appearing therefore, as if formed by being pulled out of the membrane they cover, or as if each were a bunch of hairs clotted together at the tip. Their use is not obvious. The food-reservoir is generally found to contain nothing but air ; but Newport states that it is filled with food after feeding, and as it is not glandular, it probably serves simply as a reservoir for the temporary reception of food. The neck of the reservoir is large, and by the contraction or extension of its muscular fibres, it is evi- dent that food may be easily expelled from, or drawn into, its interior. Below and just behind the neck of the food-reservoir, the oesophagus opens into the stomach (st.), a straight tube running along the ventral region of the abdomen from the base of the second, into the fifth segment. Its walls are thick and composed of muscular and glandular layers. The stomach is overlaid with the convolutions of the urinary, or Malpighian, vessels, (see fig. 2, m.v.) six in number, three of which on either side unite and open by a short common duct into the posterior end of the stomach. The urinary tubes are about 90 mm. long. At the end of the stomach begins the small intestine, 1¥For the previous literature of the mouth parts in Lepi- Kirby and Spence, ete. doptera, see Gerstfeldt, loc. cit.; Milne Edwards, Physiol- Compare also the structure of the pharynx in Diptera and ogie; Newport, Phil.Trans., 1834, p. 397; Savigny, Mémoires Hemiptera as described by Graber, Insecten 1, 316, and sur les Animaux sans Vert.,1; Graber, Insecten, 1, 154; Amtl. Ber. Vers. deutsch. Naturforschersamml. Miinchen, and the general works of Westwood, Burmeister, Siebold, 1877, p. 187. 10 BURGESS ON THE ANATOMY (ilewm, i.), a tube about one-quarter of the diameter of the former, running first backwards, then upwards and forwards, then turning backwards again, thus making a flattened S- curve in the fifth and sixth segments. The intestine in this course passes to the left of the bursa copulatrix of the female, and of the testis and penis in the male (see figs. 2 and 14, 7). The intestine passes, in the dorsal region of the sixth segment, into the colon, or large intestine (c.), which in some Lepidoptera is expanded anteriorly into a large coecal sac. In the milk-weed butterfly the colon is somewhat pyriform in the female (fig. 2, ¢.), but is longer and more cylindrical in the male (fig. 14, ¢.). It is dotted over with numer- ous little glands of doubtful function.t The colon narrows posteriorly and is followed by a short cylindrical division, the rectum (r.). The anus (a.) opens between the triangular lap- pets of the ninth segment. Tur Harman System. The heart (h.) is a small tube lying immediately under the dor- sal wall of the abdomen, and hung in this position by triangular muscular sheets (the alary muscles), which are placed in pairs, apices inwards, on either side of the heart. The walls of the heart contain two sets of muscular fibres running spirally in opposite direc- tions. Slight constrictions divide the heart into a number of segments, corresponding to those of the abdomen. Each segment has probably a pair of clefts for the entrance of the blood, but I have not succeeded in clearly making out their exact number. In the basal segment of the abdomen, the heart narrows slightly, making the begin- ning of the aorta (ao.). This after entering the thorax runs upwards, passing between the right and left sets of thoracic muscles, and then under the suture between the mesoscu- tum and scutellum, and expands rather suddenly into a large chamber (ao.c.), which is hung in position by a net-work of fibrous connective tissue. This aortal chamber is some- what pear-shaped, with the greater diameter posterior. The forward end bends downwards and again contracts into a slender tube, which runs backwards and downward until it reaches the first part of the aorta, and after passing along the anterior face of this for a short distance, it bends suddenly forward and runs along, and just above, the oesophagus, passing with the latter into the head and through the oesophageal nerve collar. The aorta then seems to bend upwards, but I have not attempted to trace it beyond this point.* The aortal walls, including those of the chamber, are provided with muscular fibres in spiral layers, as in the heart. The aorta is very readily demonstrated throughout its whole course, and the chamber forms a conspicuous object in a good longitudinal section ; it is therefore very remarkable that its peculiar character * should have hitherto escaped the notice of anatomists. New- port’s figure of Sphina ligustri’ represents the aorta distinctly following the curve of the 1 For the structure of these glands, see Chun, Abhandl. d. Senckenb. Naturforsch. Gesellsch. Bd. x. cacy. Anterior to these trunks are two smaller ones, which appear to be joined to the parts of the mouth and antennae, 2 Newport (Cycl. Anat. and Phys. 11, 977) states that there are eight pairs of openings in Sphing ligustri. 8 Newport (Cycl. Anat. and Phys., 1, 978) says of Sp. ligustri and Vanessa urticae ‘‘the aorta after passing beneath the cerebrum gives off laterally two large trunks, which are each equal in capacity to about one-third of the main vessel. These pass one on each side of the head, and are divided into three branches, which are directed baekward, but have not been traced farther in consequence of their extreme deli- and nearer the median line are two others which are contin- uations of the aorta. These pass upwards and are lost in the integuments.” 4No other case in which any portion of the aorta runs backwards has been described among insects, nor in which it dilates into a chamber. Cornalia (Monografia del Bombix del Gelso. Mem. Ist. Lomb., vz. 4°. Milano, 1856) figures a slight dilatation, but no recurving, in Bombyx mort. 5 Phil. Trans. 1834, pl. xiv. OF THE MILK-WEED BUTTERFLY. il thorax, and with no chamber: and hence at first I thought that the features presented by Archippus were peculiar to its family, or perhaps to the butterflies. I have, however, since dissected Vanassa Huntera,' a sphingid and a noctuid, and found the same conditions as in the Milkweed Butterfly, so it is probable they are characteristic of the Lepidoptera, as one would indeed expect from the general uniformity in the anatomy of the group. How Newport in his minute and numberless dissections could have overlooked so striking a fea- ture remains inexplicable, unless we presume that his figure represents what he took for granted to be the case rather than what he saw. The pulsating ventral blood sinus I have not studied in Archippus. Nervous System. Newport’s beautiful monograph’ of the nervous system in Sphinx ligustri renders anything more than a brief description of its main features, as shown in fiz. 2, unnecessary. The brain (br.) immediately overlies the oesophagus, occupying nearly the centre of the head and giving rise to the optic and antennal nerves. The commissures between it and the next or suboesophageal ganglion, forming the oesophageal nerve-collar, are short and stout. From the latter ganglion arise the nerves of the mouth organs. The thorax contains only two ganglia in the perfect insect, two of the original three thoracic gangha having been fused into one during pupation. ‘The first of them, that is the second post-oral ganglion, is the smaller, and nearly round, the next being double its length and oval. ‘The important nerves arising in the thorax are those of the leg pairs, and those of the wings. ‘The latter arise from the nerve cord between the two ganglia. The second to the sixth abdominal segments each contain a ganglion; these gradually increase in size to the last, which is compound and of considerable size. The stomato-gastric nerves are not shown in the figure owing to their small size and dif- ficulty of representation. A small ganglion, the frontal ganglion, les in front of and below the brain hemispheres, with which it is connected by a recurved cord on either side. Posteriorly it gives off a single median cord, the nervus recurrens, which passes back- ward over the oesophagus and through the oesophageal nerve-collar. A pair of ganglia also lie behind the brain hemispheres, connected with the nervus recurrens. The latter runs backward over the oesophagus, innervating it and the dorsal vessel. On reaching the stomach it divides into three branches, which run over and either side of this organ. Branchlets are also given off to the food-reservoir. FEMALE OrGANS oF Repropuction. The external opening of the oviduct (0.0.) is sit- uated immediately below the anus and hardly separated from it, between the lappets of the ninth segment. It leads into a short oviduct, which near the middle of the seventh segment divides into two lateral branches, each of which is about as long as the common duct, and each in turn gives rise to the four branches forming the ovaries. These ovarian tubes from their union in the sixth segment run forward almost to the third segment, just above the stomach ; they then curve upward and run backwards to the end of the sixth, again curve upwards and pass forward into the fourth segment, when their slender tips become solid cords, gradually unite together, and become attached to the dorsal wall of 1Mr. Scudder informs me that in dissections of chrysalids of D. ago, he observed and noted these peculiarities of the aorta. Archippus, Vanessa Io and other butterflies, made some years 2 Phil. Trans. 1834. 12 BURGESS ON THE ANATOMY the segment. This is the course of the ovarian tubes before sexual maturity. Each tube contains a line of eggs diminishing in size from base to tip, in corresponding degrees of development. As the eggs increase in size, the tubes become more or less spirally coiled, and fill a large portion of the abdomen. In the roof of the large vestibule on the ventral surface of the abdomen between the seventh and eighth segment, already described above, is the opening of the vagina. The vagina (v.) is a curved canal, with horny walls, which opens into a large and very mus- cular organ, the copulatory pouch. This pouch is oblong oval in shape, with a shallow constriction about the middle, the greatest diameter being posterior to the constriction. The walls are very thick and muscular, and the lining of the internal cavity is covered with conical teeth above, and is elsewhere thrown into numerous longitudinal folds or ridges. On the upper side of the pouch, and just beyond its beginning, is a small tube opening into it. After two or three convolutions this tube passes a into the oviduct some distance below its fork ; it expands near the middle into a pear-shaped chamber,— the sperm reser- voir or spermatheca (sp.). Besides these organs are alsoa pair of tubular glands, and a single one which discharge into the viaduct, behind the orifice of the sperm duct. They are known as the accessory, or colleterial glands. Each of the paired glands has a curious, twisted, somewhat cornu- copia-shaped dilatation near its orifice; each gland is about twenty-five mm. long. The single gland is nearly twice as long as the others, and has a corrugated external surface. The three glands lie in coils over the other organs in the seventh and eighth segments. Their function is supposed to be connected with the formation of the egg shell. MALE OrGANS oF Repropuction. The internal male organs are very simple in the Lepidoptera; they consist (see pl. 2, fig. 17, natural size), of a single large, globular testis, (¢), formed by the consolidation of the two kidney-shaped testes of the larva; of two efferent ducts (vasa deferentia), v.d.,into each of which, shortly before their union into the ductus ejaculatorius (d.e.), a single gland (g/.) opens. The compound testis lies in the fifth somite, immediately behind the food-reservoir; the intestine passes to the left of it and its ducts, ete., corresponding to the position of the former in the female. It is supported by the tracheae arising from the fifth abdominal spiracles, five branches from which extend to the testis on either side, and on reaching it divide into innumerable minute branchlets, which spread over its surface (see fig. 18). The diameter of the testis is nearly 3mm. The efferent ducts arise close together on the posterior face of the testis. They are about 30 mm. long, and 0.15 mm. in diameter, to their junction with the glands. As shown in fig. 17, the ducts seem to lead into the glands, and the basal ends of the latter then continue to the point of union into the ductus gaculatorius. The glands are tubes about 40 mm. long, and have an average diameter of 0.5 mm.; they are somewhat larger at the tip. The portion of the duct between the glands and the ductus ejaculatorius is 10 mm. in length, of the same diameter as the glands, but tapering gradually to the point of junction. The ductus ejaculatorius is about 120 mm. long, and slightly stouter than the first division of the efferent ducts. It ends in a bulb- like expansion (p.b.) at the base of the penis. OF THE MILK-WEED BUTTERFLY. 13 This latter organ is a dark, horny, slightly curved tube, about 6 mm. in length. The tip expands into a small trumpet shaped mouth, which is twisted more or less asymmetri- cally. At rest, the tip lies between, and a little beyond the triangular flaps of the anal somite, just below the anus, and is inclosed in a membranous sheath (p.s.), to permit of its protrusion beyond the body. This protrusion is worked by two extensor muscles (e.p.), one on each side, whose attachments and mode of action will become sufficiently evident by the inspection of fig. 16. The ventral arch of the ninth somite sends a process into the abdomen immediately underneath the penis, for the support of the latter, and the attachment of a large band of muscular fibres (7.p.) which embraces the penis, holds it in place, and accomplishes its re- traction. Tue ExTEerNAL Mate ARMATURE IN THE LepipopTERA. The secondary male organs of the Lepidoptera are constructed on a simple plan, which is modified after various fashions in the different groups, and these modifications are often serviceable as characters of classificatory importance. Their typical structure is well illustrated by the Satyrid but- terflies, (see the adjoining figure), in which the dorsum of the anal or ninth abdominal segment is produced into a simple term- inal hook directed downwards, recalling the telson of Crusta- cea. The sternum of the same somite is reduced to a narrow, U-shaped piece, which may be called the ventral arch. To this ventral arch are articulated two, more or less pincer-like, clasp- Pir ay aa, Sate ing organs, termed simply “ claspers.” As already stated, the — rus alope, male; d, dorsum, and . 2 el : : v. a., ventral arch of ninth som- anus lies just beneath the hook, and the penis projects below j,.7 5, ones Ge eet Ga the anus. Anal cerci are never present in the Lepidoptera. and left claspers. Remarkably enough, the eighth abdominal somite sometimes closely imitates the ninth. For instance in the yellow butterflies (Pierids), its dorsum is produced into a hook exactly like that of the ninth segment; while on the other hand in the subject of this paper, the posterior border of the sternum is extended into two false claspers (figs. 13, 14, etc., f.c.) in close imitation of the genuine organs, except that they are not articulated.1 The terminal hook is often bifid, sometimes very long, or at others curiously armed with spines, etc. The clasps are equally various in shape, and armature, and in Nison- iades* very remarkable for their asymmetrical development. ExternaL Marz Armature in Arcuippus. In the Milk-weed Butterfly, the hook is entirely obsolete, but the dorsum of the ninth somite projects into two rather triangular lateral flaps, just as in the female, except that they are longer and slenderer. Between the flaps the segment is emarginated above. The ventral arch (see fig. 15, at the numeral 9) is wider than usual, and sends a stout cylindrical process (pr.) into the abdomen, for the support of the penis and the attachment of its retractor muscle as already described. 1 The real claspers are, presumably, true arthropodan ap- _ claspers, and yet not homologous with true abdominal ap- pendages, but the existence of the false claspers suggests a pendages. mere possibility of independent development. For if a ?See Scudder and Burgess, Proc. Bost. Soc. Nat. Hist., joint could arise between the false clasp and its segment, we x11, 282. should have organs indistinguishable from the ordinary 14 BURGESS ON THE ANATOMY The claspers are articulated to the ventral arch on either side and above the process. In profile, the clasper shows a rather large rectangular body, with a small triangular pro- jection from its posterior edge above; while lower down there is an inwardly curved stout and hard process, which is continuous with a stout rib on the internal surface of the clasper. The lower edge of the clasper is tumid, and in thickness the clasper is here over a third of its width. The upper edge is on the contrary only a thin plate. The concave side of the process is turned outwards (see fig. 16), and at its tip, which is black and hard, is a transverse series of file-like ridges, while the inner surface of the process is smooth. Powerful muscles lie in the interior and are attached to the ventral arch. The muscular connection between the latter and the preceding segment is also powerful. From its struc- ture it seems as if the claspers were probably inserted within the copulatory vestibule of the female, and then pressed outward against the walls of the latter, the two sexes being held in this way instead of by the ordinary pincer-like action of the claspers in most insects. Yet another apparatus distinguishes the male Danaids among butterflies. A brush or pencil of long delicate hairs lies on either side between the eighth segment and the upper portion of the clasper, piercing the membrane between the eighth and ninth segments. These hairs are attached to the bottom of a sac-like sheath (see figs. 14-16 h. s.), which can be everted at will, as the drawn in finger of a glove may be extended by blowing into the interior, thus projecting the hair pencil out beyond the tip of the abdomen. A muscle (7. m.) is attached to the bottom of the sheath and runs downward to the anterior ventral edge of the seventh segment; this muscle retracts the pencil into its quiescent position. The uses of this apparatus are unknown ; a somewhat similar one has been noticed in some other Lepidoptera, but needs anatomical study. The false claspers, though immovable, have a greater resemblance to the ordinary form of genuine claspers, than do the latter themselves in Archippus. They are formed by the production of the lateral edges of the sternum of the eighth segment. In shape they are oblong and the posterior edge is emarginate, leaving at the corners two processes or teeth of considerable size, the upper of which is rectangular and the lower rather triangular. Both are strongly incurved. The sternum between and below the false claspers is deeply emarginated and its edge carries out the regular sweep of the lower edge of the false claspers. The edge is rendered stiff by its shape, which in section is much like that of a T-rail of a, railroad. REsPIRATORY APPARATUS. The air tubes, or tracheae, present no peculiar features in the Lepidoptera. The very short main trunk into which the stigmata open soon divides into branches which run to the special organ to be aerated and there often branch abruptly into a great number of fine tubes, as shown in the tracheae of the testis (fig. 18). Air sacs such as are found in the Orthoptera, ete., do not occur. The stigmata of the first pair lie in the sides of the prothorax behind the prothoracic lobes. Succeeding pairs of stigmata are situated in the pleurae of the first seven abdominal somites, the pair in the first seg- ment being rather hard to find owing to the folds in the integument of its sides. OF THE MILK-WEED BUTTERFLY. 15 EXPLANATION OF THE PLATES. Pruate 1, Fig. 1. Lateral view of Danais Archippus, female, <6. Heap. a@., Antenna; 9., Occiput; cl., Clypeus; ma., Proboscis ; p., Labial palp. Tuorax. I, Pro-, II, meso-, III, meta-thoracic somites. s., scutum; sm., scutellum; psm., post scutel- lum; epm., epimerum ; eps., episternum; cw., coxa; é7., trochanter ; 7, femur; these parts are marked 4,2, or 3, as they belong to the pro-, meso-, or metathorax, respectively. Sp.1, first spiracle; 2.1 and w.’, fore and hind wings. AxspoMEN. 1 to 9, the nine somites of the abdomen; sp.’, sp.*, second and seventh abdominal spiracles i.é., the spiracles of the third and eighth pair. X6. In this figure the membranous portions of the integument are dotted. Fig. 2. Lateral interior view (6), showing the internal organs in their natural relations, after the removal of the right half of the integument, together with the tracheae, and fat-body. 1 to mm, somites of the thorax; 1 to 9, of the abdomen. ALIMENTARY CANAL AND APPENDAGES. ph., pharynx; s.d., and s.gl., salivary duct and gland of the right side; oe., oesophagus; f7., food reservoir; st, stomach; 7., small intestine; c., colon; 7., rectum; a., anus; m.v., malpighian vessels. Harman System. h., heart or dorsal vessel; ao., aorta; a.c., aortal chamber. Nervous Sysrem. (Dotted in the figure), 6r., brain; g.', sub-oesophageal ganglion; tg., compound thoracic gangla; a.g.1, a.g.4, first and fourth abdominal ganglia. Femate RepropuctivE OrGans. c¢p., copulatory pouch; v., vagina; o., oviduct, and o0.0., its external opening; 7.0v., base of the right ovarian tubes turned down to expose the underlying organs; Z.ov., left ovarian tubes in position, and ov.c., their termination in four cords; sp., spermatheca; @.g/.1, part of the single acces- sory gland; a.gi.”, one of the paired accessory glands; only the base of its mate is shown. Other letters as in fig. 1. Fig. 3. Front view of head, X10. oc. compound eyes; @, antennae; cl., clypeus; 7b., labrum ; md., man- dibles; ma., base of proboscis; ma.p., tubercle representing maxillary palp; s.g., cheek; or., orbit. Fig. 4. Interior view of the bottom of the head, the top having been cut away, showing in the middle the pharyngeal sac with its five muscles — the frontal, fm., the dorsal pair, dm., and the lateral pair, m.; el., cly- peus; cor., cornea of the compound eye (the left eye is not drawn); oe., oesophagus; pm., one of the large muscles which move the labial palp. Fig. 5. Horizontal section of head through the pharyngeal sac. ph., pharynx ; Aph., hypopharynx, show- ing the papillae dotted over it; fm., frontal muscle; m., labial palp muscles; s.d., salivary duct. Fig. 6. A section through a bit of wing and a scale; and fig. 6a, the same, the section passing through a seale pedicel; ew., cw.', the upper and lower cuticular membranes of the wing. With 5 inch objective. PratE 2. Fig. 7. Longitudinal section through the head giving a view of the interior of the left half; mza., the left maxilla whose canal leads into the pharynx; /ph., floor of the latter showing some of the papillae of taste; oe., oesophagus; c/., clypeus; ep.v., epipharyngeal valve; s.d., salivary duct; dm. and fm., one of the dorsal and the frontal muscles which hold the pharyngeal sac in its position. Fig. 8. Tip of the proboscis showing the arrangement of the cuticular rings and blocks, with the interspersed papillae. With } inch objective. Fig. 9. Longitudinal section of proboscis; the canal, ¢., is shown above; lower down the trachea, ¢., and the nerve, n.; while the diagonal muscles, m., overlie them. These are spaced somewhat wider than in na- ture, for the sake of clearness. The right edge is the outer one. } inch objective. Fig. 10. ‘Transverse section of proboscis, showing the two maxillae united by the dove-tail joint, and forming the interior canal, c.; the air tubes, tr.; 7. nerve; m.and m.’, the two sets of muscles, more or less displaced in the cutting. 4 inch objective. 16 ANATOMY OF THE MILK-WEED BUTTERFLY. Fig. 11a, b,c and d. Sections through the integument of the proboscis, showing the different shapes of the cuticular elements and the lamination of the cuticle, ew.; hy., hypoderm or matrix. Fig. 11¢ shows two of the cuticular elements separating from each other. 5 inch objective. Fig. 11le. Cuticle of posterior region of the proboscis from outside; each cuticular block being here pro- longed into a spine. 4 inch objective. Fig. 12. Cuticular processes clothing the upper central portion of the food-reservoir. The longitudinal and transverse muscular fibres are seen beneath. } objective. Fig. 13. Lateral view of the tip of the abdomen in the male; 7, 8, 9, seventh, eighth and ninth somites of the abdomen; p., penis; fc. false clasper, overlying the real clasper, ¢., which is shown uncovered in fig. 13a, by the removal of the whole 8th somite; /.s., hair sheath torn open above, showing the protrud- ing bundle of hairs; ™m., muscle. X 8. Fig. 14. Lateral internal view of the male abdomen, showing the genitalia in situ; ¢., testis; v.d., the double vas deferens ; d.e., ductus ejaculatorius; p.0., interior view of the penis bulb; p.s., penis sheath; r.p., retractor penis; p7., internal process of the ninth somite affording the attachment of the retractor penis; the posterior wall of the process is cut away; ¢., clasper; f.c., false clasper; other letters as in fig. 2. X 8. Fig. 15. Interior of the exoskeleton of the seventh, eighth and part of ninth abdominal somite, male. The figure 9 is placed on the ventral arch of the ninth somite, which sends forward the process, pr., for the attachment of the retractor penis as shown also in the preceding figure. The dotted surface represents the membrane, connecting the eighthand ninth somites. This membrane is pierced above by the hair-bundle ; h.s., hair-bundle sheath; 7.m., its retracting muscle. X 8. Fig. 16. Horizontal section through the tip of the male abdomen showing the penis, p., and its extensor and retractor, ¢.p., and 7.p.; p.0., penis bulb; p.s., sheath; d.e., ductus ejaculatorius; /.6., cut through hair- bundle; s.m., intersegmental muscles. X 8. Fig. 17. Male organs, natural size; ¢, testis, with its supporting tracheae, ¢r.; v.d., vas deferens; gl., gland; d.e., ductus ejaculatorius. Fig. 18. Portion of testis showing the distribution of the tracheae of the left fifth abdominal spiracle. The branching of only one of the main tracheal stems is figured. AIAHALINEG GHAM-MTIN YHL 40 ANOLVNV ap 'sso3.n q-mpy WPsSONy lap apa [ Iq ssesang “St TeN'IOS W0Isog SATO WayyssaATUUYy Annivers.Memoirs Boston Soc.NatHist. Burgess Plate [I Edw. Burgess, del AMeisel, lith ANATOMY OF THRE MILK-WEED BUTTERFLY. . 1830. ANNIVERSARY MEMOIRS OF THE BOSTON SOCIETY OF NATURAL HISTORY, THE DEVELOPMENT OF A DOUBLE-HEADED VERTEBRATE. By SAMUEL F. CLARKE, Pu.D., ASSISTANT IN BIOLOGY, JOHNS HOPKINS UNIVERSITY, BALTIMORE, MD. BOSTON: PUBLISHED BY THE SOCIETY. 1880. 1880, Tur DEVELOPMENT OF A DouBLE-HEADED VERTEBRATE. By Samuet F. Cuarxz, Pu.D. THE mode of origin and development of duplex monstrosities in the vertebrates is one of those interesting questions so beset with difficulties that it is seldom we can gain any direct observations with which to test the existing theories. Any one who examines a considerable number of these double forms cannot fail to notice the varying degrees to which the duplicity is carried. It is generally agreed that two beings who are in the slightest way connected by a band of flesh represent one extreme of the series of double monsters, — as, for example, the Siamese twins, — while the other extreme consists of a nearly normal form in which there are but the slightest indications of duplicity. Between these extremes one finds all degrees of variations from the normal. One of the most generally accepted methods of explaining the origin of these monstrosities is by supposing that two eggs are fertilized and developed at the same time. This theory would account very well for ordinary twins, or for such as the celebrated Siamese twins, where the physical band is slight ; but for other forms, in which the duplicity is but partly expressed, this theory does not answer so well. According to this view, the origin of such a form as is represented in plate 1, fig. 5, would be explained as follows: Two eggs fertilized at the same time had been thrown together, remained united, and developed in such a way as to form the two-headed monster represented. Now this satisfactorily accounts for the anterior portion only,— the two heads. Why there should not be also two bodies and four pairs of limbs as well as two heads is explained (?) by saying that the two ova became united in such a way as to prevent the development of more than the ordinary arrangement posterior to the head. How is it, then, that the part of the animal which is single is so regularly and symmetrically developed? This would seem highly improbable if two eggs at a very early stage had been thrown together. Hach egg, of course, has the tendency to develop one symmetrical organism, like that from which it came. Now, when two eggs become united, it does not seem very reasonable to suppose that these tendencies will remain intact in certain parts of the united mass, so as to produce two heads or two tails, ete., while in other parts we find a perfectly normal development. To account for this, we must suppose that either a part of the mass of one egg loses its tendency to develop and takes no active part in the progressive changes, being merely absorbed by the protoplasm of the other egg, which has retained its tendency or power to oo? develop, or that both portions have become intermingled, and in this enlarged mass there 4 CLARKE ON THE DEVELOPMENT OF exists, either as a newly formed or as a product of the union of the two individual tendencies, the ability to develop one normal form. Still less probable does this seem when we consider the forms in which duplicity is but very slightly indicated, las, for example, where there are two thumbs on each hand. In this case one would be forced to believe that these small appendages were the only expression of that strong tendency of each ovum to produce a being like the one from which it had its origin. In other cases where the duplicity is much more complete, as in the Siamese twins, it may be supposed that the embryos did not come in contact until after they were considerably advanced. This would seem somewhat more reasonable. Moreover, if two ova are united intimately and then develop into a monster but slightly duplex, we should expect to find the animal of unusual size. This, however, is very often not the case. In the Ichthyop- sida, and especially in the Teliosts, where many eggs are hatched at the same time, and among which specimens of duplicity are not uncommon, these latter are often, though not always, smaller than their brothers of the same age. This would seem to indicate that, in some instances, duplex monstrosities arose from the union of two eggs, while others came from a single egg. The idea that one ege may give rise to two animals, or to a duplex form, has also been often advanced. This theory would account for all such forms of every degree, and this is certainly a strong point in its favor, as there exists a complete series between the extreme former, by supposing that there existed in some eggs an unusual amount of developmental activity, so that, instead of developing in the regular way, it pushed beyond its bounds and formed additional parts. By this theory one can explain all cases of duplicity by supposing a greater or less degree of extra developmental power. A small amount might produce only a secondary thumb, while an extreme amount might give rise to a nearly or quite complete form like itself. This theory that double monsters origimate from one egg has better support than any other. In the first place, as there is a continuous series of these forms from one extreme of duplicity to the other, a theory that shall be satisfactory must explain them all. That is true of this theory. Secondly, these forms are not (so far as I have had a chance to investigate) any larger, and not often so large, as other individuals born at the same time. Were they the product of two eggs this would probably not be the case. Thirdly, all double monsters in which the bodies are sufficiently developed are both invariably of the same sex. A very interesting case in connection with this question in Teratology came under my notice in the spring of 1879. I had in my aquarium a large collection of between two and three thousand eggs of Amblystoma punctatum, of which I was studying the development. Examining great numbers of them daily, I chanced to find one in which the medullary folds were nearly completed, but in which the latter had not united at the cephalic end, and in which they appeared so much elevated and rounded at their anterior ends, with well defined instead of ordinary vague outlines, that I kept the egg by itself and watched its development. When first found it was in about the condition represented in plate 1, fig. 1. Figs. 1 and 2 are from memory. The original sketches from life were unwittingly destroyed. Having watched the development and made sketches of the embryo my memory is very clear on the subject; so that, while it is much to be regretted A DOUBLE-HEADED VERTEBRATE. 5 that the original sketches are gone, I feel that the two given are accurate in all the essential points. I have also given two figures froni life of normal development at the same stages for comparison. As the medullary folds closed in, they failed to unite along a certain part of the thickened cephalic end. Then each free portion of the medullary folds developed a perfect head, which at first partly united, gradually became more so, until they were connected throughout their entire lengths. Posterior to the heads, however, there are no indications of duplicity. There is but one body with the regular appendages and cloaca. One of the heads, the right, is larger than the left, and somewhat more in a direct line with the body than the smaller head of the left side. Each head has a pair of well-formed eyes and a mouth. The branchiae of the right head are quite normal; those of the right side of the left head are unusually small and crowded down by the branchiae of the left side of the right head; the branchiae of the left side of the left head are abnormally large, sufficiently so to make good the want of size of those of the right side. The right head is much nearer the plane of the body than the left, as will readily be seen from the position of the eyes and mouth. The smaller head, however, is so twisted, or rotated, that its left side is in about the same plane as the ventral side of the body. Having reached the stage indicated in figs. 5 and 6, the animal died. The interesting point in this observation lies in the fact that a two-headed monster, with one regularly symmetrical body, was developed from one egg, and that the anterior portion of each medullary fold gave origin to a head. It is a point in favor of the theory of a tendency of singleness toward duplicity; that is of one egg having a tendency to develop into two animals, more or less completely. It is quite surprising to find that the portion of each medullary fold which ordinarily gives rise to a definite half of the head, with its sense organs and appendages, should, in this case, have developed a perfect head with paired eyes and ears and branchiae. EXPLANATION OF PLATE. Figs. 1-4. All the figures enlarged to thirty diameters. Fig. 1. Dorsal view of the earliest stage in which the embryo of the monstrous form was observed. A, the space separating anterior ends of medullary folds, and across which they never united; mf, medullary folds; mp, medullary plate; mr, medullary groove. Fig. 2. A later stage of the same embryo.