PROCEEDINGS OF THE AMERICAN ACADEMY OK ARTS AND SCIENCES. VOL. IV. FROM MAY, 1857, TO MAY, 1860. SELECTED FROM THE RECORDS. BOSTON AND CAIklBRIDGE: WELCH, BIGELOW, AND COMPANY, 1860. x^ "i 3 PROCEEDINGS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES. SELECTED FROM THE RECORDS. VOL. lY. Four hundred and fortietli meeting. May 26, 1857. — Annual Meeting. The President in the chair. Dr. A. A. Gould, from the Committee on the Library, made the annual report upon the condition of the library. Professor Lovering, in behalf of the Committee on Publi- cations, made his annual report. The Treasurer presented his annual report upon the finances of the Academy; which was ordered to be entered in full upon the record-book. The President read a list of the Fellows, Associate Fel- lows, and Foreign Honorary Members chosen during the past year. Also a list of those deceased since the last annual meeting, as follows : — Resident Fellows. Hon. Samuel Hoar, of Concord. Hon. Francis C. Gray, of Boston. Rev. Dr. Ephraim Peabody, of Boston. Associate Felloiv. Prof. Jacob Whitman Bailey, of West Point. Foreign Honorary Member. Dr. Buckland, the late Dean of Westminster. VOL. IV. 1 2 PROCEEDINGS OF THE AMERICAN ACADEMY The vacancies in the list of Foreign Honorary Members were filled by the election of Professor Mitscherlich, of Berlin, in Class I. Section 3 ; Professor Hugo von Mohl, of Tlibingen, in Class H. Sec- tion 2 ; Jacob Grimm, of Berlin, in Class IH. Section 2. The following gentlemen were elected Fellows of the Academy : — John D. Runkle, of Cambridge, in Class I. Section 1. Dr. David Weinland, of Cambridge, in Class H. Section 3. Moses G. Farmer, of Boston, in Class I. Section 3. Dr. Charles G. Putnam, in Class H. Section 4. Professor Gray read the following note in reference to the life and services of the late Professor Bailey : — " Jacob Whitman Bailey, late Professor of Chemistry, Mineralogy, and Geology in the U. S. Military Academy, West Point, — the only Associate Fellow lost to the Academy by death during the past year, — died on the 27th of February last, at a comparatively early age. He was born on the 29th of April, A. D. 1811, in the township of Ward, now Auburn, in this Commonwealth. He was graduated at West Point, in July, 1832, when he received his commission of Second Lieutenant of Artillery. He was promoted to be First Lieutenant in August, 1836, and had charge of an arsenal in Virginia at the time of his appointment, in 1838, to the chair he so long and so wor- thily filled at West Point, at first as Assistant, and afterwards as prin- cipal Professor. " His public scientific career began in the year 1837, Avith a commu- nication printed in the American Journal of Science, On the Use of Grasshoppers' Legs as a Substitute for Frogs in Galvanic Experi- ments. Shortly after his removal to West Point, viz. in 1838, he commenced the publication, in the same Journal, of his important series of papers on the Infusoria, especially the Diatomacece, both recent and fossil, being the results of assiduous and long-continued observa- tions on these minute organisms, which ended only with his life, — his latest paper, reporting the results of microscopic examination of the soundings across the Atlantic made in the voyages of the Arctic be- OF ARTS AND SCIENCES. 6 tween the coast of Ireland and this country, having been pubhshed a few days after his lamented death. " Other important papers on the same class of subjects have ap- peared in the Smithsonian Contributions to Knowledge. One of his most recent publications was a short paper, showing — contrary to Sir David Brewster's till then unquestioned statement — that silex in vegetables, as in the rind of the stem of Grasses and Equisetum, does not polarize light, and is not crystalline in structure. The apparent polarization he showed to be due to organic membrane, which had not been entirely removed. It must not be forgotten, moreover, that he was the first to prove the vegetable structure of coal (at least of anthracite), which he did in a characteristic way, at once simple and decisive, as may be seen by his paper on the subject in the American Journal of Science. " Professor Bailey commenced his microscopical observations with simple lenses made by himself of fused globules of glass, using these, as well as better instruments, with extraordinary skill and success. He may justly be regarded as the founder of microscopical research in America, and himself as a model investigator. His published papers are all short, clear, explicit, and unpretending as they are thorough ; and every one of them embodies some direct and positive contribution to science." The officers of the Academy were elected for the ensuing year as follows : — Jacob Bigelow, .... President. Daniel Treadwell, . . Vice-President. Asa Gray, . • . . . Corresponding- Secretary. Samuel L. Abbot, . . . Recording Secretary. Nathaniel B. Shurtleff, Librarian. Edward Wigglesworth, Treasurer. Council. Joseph Lovering, \ E. N. Horsford, > of Class I. Benjamin A. Gould, Jr. ) Louis Agassiz, Jeffries Wyman, \ of Class II. John B. S. Jackson, 4 PROCEEDINGS OF THE AMERICAN ACADEMY James Walker, \ Francis BoavExN, > of Class III. Nathan Appleton, ) The President announced the following Standing Com- mittees : — Rmnford Committee. Eben N. Horsford, Joseph Lovering, Daniel Treadwell, Henry L. Eustis, Morrill Wyman. Committee of Publication. Joseph Lovering, Louis Agassiz, Cornelius C. Felton. Committee on the Library. Augustus A. Gould, Benjamin A. Gould, Jr. Josiah p. Cooke, Jr. To Audit the Treasurer's Accounts. Thomas T. Bouve, Dr. C. E. Ware. Four Iiundred and forty-first meeting. August 12, 1857. — Stated Meeting. The President in the chair. The Corresponding Secretary read the following letters, viz. : — From Jacob Grimm, Berlin, July 2, accepting his appointment as Foreign Honorary Member ; from Dr. Charles G. Putnam and J. D. Runkle, accepting Fellowship ; from the Linnccan Society, London, November 25, 1856, Royal Geo- graphical Society, London, November 29, 1856, Academie Royale des Sciences a Amsterdam, January 5, 1857, Die Ko- nigl. Siichsische Bergakademie, Freiberg, January 19, 1857, Kaiserlich-Kllnigliche Geologische Reichsanstalt, Wien, Jan- uary 21, 1857, Corporation of Harvard College, March 10, OF ARTS AND SCIENCES. 0 » 1857, Royal Society of Sciences, Gottingen, April 18, 1857, K. L. C. Akademie der Naturforscher, Breslan, May 4, 1857, Societe Imperiale des Naturalistes de Moscou, Moscow, March 22, 1857, and the Academy of Natural Sciences of Philadelphia, June 19, 1857, acknowledging the receipt of the Academy's publications ; from the Socidte de Geographic a Paris, February 7, 1857, and the Academy of Natural Sciences, Philadelphia, June 19, 1857, acknowl- edging the same, and requesting that missing parts may be supplied ; from the Kaiserlich-Konigliche Geologische Reichs- anstalt, Wien, January 1, 1857, and the Societe Royale des Sciences a Upsal, presenting their publications; from the Superintendent of the Geological Survey of India, &c., Jan- uary, 1857, presenting the Memoirs of the Survey, and re- questing an exchange ; from the Verein fiir Naturkunde im Herzogthum, Nassau, May 1, 1857, presenting its transac- tions, and asking an exchange ; and the Comet Circular of July 28, 1857, from Dr. C. H. F. Peters, at Albany, N. Y. Dr. Charles T. Jackson made some statements concerning the various kinds of marble now being used in the govern- ment buildings at Washington, and incidentally spoke of the chemical action in different kinds of lime and cement. Dr. Weinland spoke of the lime in use in Hayti, as en- tirely made from the shells of Strombus gigas. Professor Felton announced to the Academy the organiza- tion of an Academy of Arts and Sciences at Athens. The requisite quorum for the transaction of the proper business of a stated meeting not being present, on motion of Professor Treadwell, it was voted that the next regular meet- ing be an adjournment of the present one. Four buudred aud fortysecond ineetiu§^. September 8, 1857. — AdjouRx\ed Stated Meeting. Professor Treadwell, Vice-President, in the chair. Professor Guyot addressed the Academy at considerable X 6 PROCEEDINGS OF THE AMERICAN ACADEMY length upon the general geographical features of New Eng- land, showing the influence they had exerted in fixing the successive settlements of this part of the country. He pro- posed to treat the subject more fully in a Memoir to be laid before the Academy. Four Iiuudred and forty-tlilrd meeting. October 13, 1857. — Monthly Meeting. The President in the chair. The Corresponding Secretary read the following letters, viz. : — From the Academic Royale des Sciences, &c. de Belgique, January 15, 1856, and February 7, 1857, the Academy of Science of St. Louis, August 24, 1857, and the American Philosophical Society, September 10, 1857, ac- knowledging the receipt of the Academy's publications ; from the Academy of Natural Sciences, July 7, 1857, acknowledg- ing the same, and asking that missing numbers may be sup- plied ; and from the Academic Royale des Sciences, Turin, May 15, 1857, acknowledging the same, and presenting its own publications. Professor Lovering said, that, at a former meeting, — in making some remarks on the question, whether the Mississippi River flows up hill, — he alluded to a criticism of President Horace Mann (published in the Common School Journal) upon those who attributed the direction of the flow of this river to centrifugal force. Mr. Lovering had since learned from INIr. Mann that he recalled his opinion in the same Jour- nal two years afterward. If Mr. Lovering had known this fact at the time he should not have alluded to the unsound criticism ; and he wished now to give Mr. Mann the benefit of having recanted most fully his former error, before he him- self took notice of the subject. Dr. Wcinland gave an account of a recent visit to the island of Hayti. He mentioned many interesting facts concerning the influence of the prevailing winds upon the OF ARTS AND SCIENCES. / surrounding sea, and its incidental effect upon the marine Fauna of that region, and the formation of a solid rock from the debris of shells and corals. Dr. Weinland also spoke of the vegetation of the island, and of the manners and cus- toms of the inhabitants. Four liimilred and forty-fourth meeting. November 11, 1857. — Stated Meeting. The President in the chair. The Corresponding Secretary read a letter from the Soci^t^ des Sciences des Indes Neerlandaises, dated Batavia, April 18, 1857, desiring to know whether all of its publications which had been transmitted to the Academy had been re- ceived. The following gentlemen were elected Fellows, viz. : — Ezekiel Brown Elliott, in Class I. Section 1. Frank H. Storer, in Class I. Section 3. William T. Andrews, in Class III. Section 4. Charles W. Eliot, in Class I. Section 3. St. Julien Ravenel, M. D., of Charleston, South Carolina, and Professor Edward Robinson, LL. D., of New York, nominated by the Council, were elected Associate Fellows, the former in Class II. Section 3, the latter in Class III. Section 2. Professor Horsford exhibited specimens of parchment pa- per, prepared from paper of a very loose texture, by dipping it into a mixture of two parts of sulphuric acid and one of water, and then rapidly washing it in cold water. The ac- tion of the acid probably converts the surface of the fibres into a gum, which, on hardening, cements the whole, and gives great strength to the paper. Professor Horsford also exhibited specimens of Silicium ; also of copper obtained from a deposit of Tripoli, about forty miles from Bangor, Maine. Dr. S. S. Kneeland exhibited two specimens of Meno- 8 PROCEEDINGS OF THE AMERICAN ACADEMY branclms from Portage Lake, near Lake Superior. He had had them in his possession since December, 1856, and from that time until the succeeding June they took no food. At the present time they devour earth-worms greedily. During the past winter, the water in which, they were kept had re- peatedly been frozen solid. They were pumped up from the lake, and it is only during the winter season that specimens are obtained. Professor Horsford gave the results of several experiments by his pupils to determine the commercial value of saltpetre by a new method proposed by himself some time since, and then announced to the Academy. The results corresponded very accurately with each other, and with those obtained by more elaborate chemical processes. Four buudred aiid forty- Aftb meeting. December 8, 1857. — Monthly Meeting. The President in the chair. The Corresponding Secretary read a letter from Professor Edward Robinson, accepting the Fellowship of the Academy. Professor Agassiz spoke of the various existing systems of Classification of Fishes, characterizing them all as incom- plete and artificial. He analyzed those of anatomists and zoologists, showing how each failed to conform to the natural system. He referred to his own proposed classification, based on the characters of the scales, and said that he had given that up also as too artificial. The true indications, he thought, were to be found in the embryonic development of this class of animals. Development without an amnios or allantois is common, he said, to naked reptiles and fishes. The scaly reptiles, birds, and mammals are associated by their circulation as a natural group. Among fishes he rec- ognized four groups on a par with the natural divisions of amphibians. He proposed the name of Salachians, to include the sharks and skates, which differ in the structure of their OF ARTS AND SCIENCES. 9 skeletons, brains, and in other particulars, from fishes proper. Next come the genuine Ganoids, with their reptilian affin- ities. The lamprey-eel is the only type which undergoes a metamorphosis in passing from the young to the adult con- dition. The four classes, then, among fishes are the Sela- chians, the Ganoids, Fishes proper, and Myzonts. Professor Agassiz explained how the position of the fins cannot be relied on as a character for the formation of natural groups. The sturgeons, loricarians, and cat-fish, he said, form a natural group, based on similarity of structure of the opercu- lum and upper jaw, characters which he considered of more importance than the muscular bulbus of the aorta. These families are linked together also by the peculiar arrangement of the lateral line and the dorsal and abdominal shields. Professor C. C. Felton announced the decease of a distin- guished Associate Fellow of the Academy, Thomas Craw- ford, as follows : — " I rise to announce the death of a Fellow of this Society, Thomas Crawford, the American sculptor. " It is but a year since Mr. Crawford returned to Rome from a visit to the United States, leaving his family with their relatives. He was then apparently in full health, in the highest spirits, looking forward to future achievements ; — already possessed of fame and fortune, domes- tic happiness, the love and admiration of friends, and of all else that makes the present delightful, and the prospect of the future brilliant and enchanting to a noble spirit. It is but a few days since his colos- sal bronze statue of Washington was landed at Richmond, and drawn by shouting and enthusiastic multitudes to the place of its destination, up the Capitol Hill of that beautiful city. Last Saturday the lifeless body of the great artist was borne by the pious hands of silent and sorrowing friends, to its final resting-place in Greenwood Cemetery. "Thomas Crawford was born in New York, on the 22d of March, 1813. Early in life he showed, amidst the hardships of poverty, the irresistible promptings of a natural genius for sculpture, in which he was destined to gain a world-wide renown. In 1835 he waS' enabled to go to Rome, the true school for the sculptor, and there, with hopeful courage and manly heart, he dedicated his studious nights VOL. IV. 2 10 PROCEEDINGS OF THE AMERICAN ACADEMY and laborious days, under the wise counsel and friendly aid of the great Thorwaldsen, to the simplest but sublimest of the arts. His earliest productions gave ample promise of future distinction. In 1839 Mr. Charles Sumner, then visiting Rome, saw the model of the Orpheus, and, admiring its chaste and classic beauty, undertook, with friendly zeal, to raise a subscription in Boston, that the work might be executed in marble. He was successful, and the Orpheus of Crawford is now one of the conspicuous ornaments of the gallery of the Boston Athenteum, and its rare merit established the fame of the young sculptor. In 1844 he returned to the United States, and was married to Miss Louisa Ward of New York. I need not dwell on the happiness which this marriage secured to him. " The reputation of the ai'tist increased, with the rapidly increasing number of his works. This is not the occasion to enumerate them, or to enter upon an elaborate criticism of their various and extraordinary merits. I have spoken of the first, and I have alluded to the last, the colossal monument of Washington, ordered by the patriotic State of Virginia, which remained, in some of its details, uncompleted at the time of his death. That monument will make the Capitol of Rich- mond a shrine to which the lovers of art will for ever make their pilgrimages, to gaze upon the sculptured form of the greatest of men, embodied by the genius of one of the greatest of modern sculptors. " Mr. Crawford was a person of generous and manly character. He was bold without rudeness, frank and independent without forget- ting the rights of others. In conversation he was animated, intelligent, and instructive. In manners he was unaffected, simple, and hearty. His genius was not only vigorous, but varied and afiluent. His imagi- nation was brilliant and fiery, but chaste and disciplined ; and his hand was untiring in executing what his mind conceived. He loved to enthusiasm the beauty of Hellenic art, and was an unerring but kindly critic of the productions of the moderns, and of his living contempo- raries. He was alike familiar with the boundless treasures of the Vatican and of the Capitol, and with the vast variety of works in the studios of the artists of all nations at Rome. From what I saw and heard of him there, I am sure it will be the verdict of his brethren, that he has hardly left his peer in the Eternal City. " In 1856 Mr. Crawford came on a visit to the United States ; and his friends were struck by the unbroken vigor of his health, and the OF ARTS AND SCIENCES. 11 animation and joy of his discourse. But even then the disease — a cancer on the brain — which closed his hfe had made some progress unknown to himself. On his return in the autumn to Rome, it soon demanded attention. An examination was made, and an operation was performed by a skilful surgeon, to ascertain precisely the nature of the disease. It was found to be malignant, and probably incurable. He went to Paris, under advice, and the ablest surgeons of that city pro- nounced the case a hopeless one. But that nothing should remain untried that might hold out the slightest possibility of benefit, he was removed from Paris to London, and placed under the care of a pro- fessional man who had made a special study of this class of diseases. It was all in vain. Crawford died on the 10th of October, having borne the protracted agonies of his long illness with the fortitude of a hero and the resignation of a Christian. The consolations of friend- ship, of domestic love, and of religious faith, surrounded his dying-bed. He calmly arranged all his earthly affairs, and prepared his soul for the last scene ; and he departed with the serenity of one who was conscious of a life consecrated to noble pursuits and generous affec- tions, and who felt an unwavering faith and entire submission to the will of God. He has left to his successors an illustrious example ; he hr.s bequeathed to his country a renown that ranks him with the great sculptors of ancient Athens and modern Rome ; he has left a name which the most distant ages will not let die. " I move the following resolutions : — " Resolved, That the members of the American Academy of Arts and Sciences have heard with deep regret of the death of their late associate, Thomas Crawford, the distinguished sculptor. In his char- acter they recognize the noblest virtues, and in his works a large con- tribution to the glory of the American name in one of the highest walks of art. In his death, the country and the world have lost one of the most brilliant men who have done honor to the present age. '■^Resolved, That the members of this Association sincerely sympa- thize with the family and friends of the deceased in this their great bereavement ; and that a copy of these resolutions be communicated to Mrs. Crawford by the Corresponding Secretary." The resolutions were unanimously adopted. Dr. W. F. Channing exhibited photographs, of various sizes, of the late Rev. W. E. Channing, D. D., taken by Whipple 12 PROCEEDINGS OF THE AMERICAN ACADEMY from Gambardella's portrait. He also exhibited specimens of Breckenridge bituminous coal from Kentucky, from which paraffine is now manufactured, specimens of which were shown, together with candles made from this substance. Professor Horsford spoke of certain curious knolls which are found in Western New York after the forests are cut down, and are always indicative of the presence of gypsum. The heat of the sun acting on the soil after the removal of the forests, the gypsum in solution rises by capillary action to sustain the evaporation, and takes on crystalline form as soon as it reaches a point where the water, reduced by evaporation, becomes insufficient to hold it in solution. These crystals, pushing up from below, raise the ground into the form of a knoll, sometimes six or eight feet in diameter, and from one to two feet high. The bed of gypsum is usually found within a few feet of the surface of the ground. Four liundred. aud forty-sixth meeting. January 12, 1858. — Monthly Meeting. The Academy met at the house of the Hon. Thomas G. Gary. The President in the chair. Professor Lovering made a communication in regard to the Australian instrument, called the boomerang, under the following heads : — 1. Its History and Antiquity. 2. Its Shape. 3. Its Use. 4. Its Mechanical Theory. 5. Its Ex- perimental Illustration. He gave upon the blackboard a simple mathematical analysis, to show why it deviated from the vertical plane, why it retrograded, and at what angle of elevation these effects were at a maximum. Professor W. B. Rogers made some remarks upon the variations of its movements, in actual practice, from the results of abstract calculation, and the cause of these vari- ations. OF ARTS AND SCIENCES. 13 Mr. Gary exhibited to the Academy a large photograph which he had lately brought from Milan, taken recently from the celebrated painting of the Last Supper, by Leonardo da Vinci, in the Refectory of the Dominican Convent in that city. He exhibited at the same time the well-known engraving of the same picture by Raphael Morghen, to show, by compari- son of the two, that the engraving is not a close copy of the original, there being marked differences in the features of several of the figures ; and, while the attitudes are similar, the expression in several of them, particularly in the principal figure, is so unlike, as to account for the impression generally received, by those who see the original, of its great superiority to the engraving in dignity and power. It has been said that the drawing was not good from which the engraving was made, and that, in some instances, heads copied from detached sketches left by Leonardo da Vinci were substituted in it for those which he finally adopted as best jsuited to express his own conception. It is to be remembered, however, that the engraving of Morghen has roused a general interest in the subject, that tends strongly to preserve what remains of this extraordinary picture, after its injuries by flood and war, as well as by decay from the lapse of time. He likewise exhibited to the Academy a picture of great age and beauty, now in his possession, which has been supposed to be by Leonardo da Vinci, and gave an account of some pe- culiar circumstances under which it was brought to the United States. Early in this century, when the armies of Napoleon were in Spain, on the approach of a large body of troops, some pictures were hastily removed from a church for safety ; and it was afterwards found that, in the confusion, one of them, a painting of great value, had been carried to the coast. A courier was despatched with authority to recover it, but found, on his arrival at the seaport, that it had been offered there for sale, and purchased by an American captain, who had sailed for the United States. A letter was then addressed by a commercial house to Mr. Nelson, a prominent merchant at 14 PROCEEDINGS OF THE AMERICAN ACADEMY that time in New York, stating these facts, with the name of the ship and captain, and desiring him to repurchase the pic- ture and send it back to Spain, whatever might be the cost. On inquiry, he found that the captain had arrived and sailed again on a long voyage. Mr. Nelson waited his return, and having ascertained that he had the picture, before attempting any negotiation for it wrote back to Spain to inquire whether he still had unlimited authority to purchase it. Receiving no answer, he supposed that the parties interested in the sub- ject were dead or driven away, as everything was then in confusion. Many years afterward he mentioned this picture, as one that was likely to be of great value, to a gentleman in New York, who had a great love for paintings. Mr. Gary, then residing in New York, was applied to for information of the captain, who belonged to Boston, and who said, when asked, that he still had the picture, that it had been a great favorite with his wife, and that during her life he never would have parted with it ; but that since her decease he was without a home, and had no objection that the picture should go where it would be more seen and admired. It was accordingly purchased. It was found to be on a thick panel of hard and very old wood. The subject was the Madonna and Child, but the figure of the latter, with little of the sacred gravity that is given in the Madonna della Seggiola of Raphael, and by other masters, was rather that of a playful, curly-headed boy, which at first caused some persons to suppose that it might be intended for Hagar and Ishmael. It presented in another respect a peculiar appearance. One part of the painting seemed to be the work of a great master, while another part was of a very inferior order. A German artist, then living in New York, who had extensive knowledge of pictures and considerable skill in repairing them, was called to examine it. After close attention, he asked for a needle, and showed that the part which was admired was impenetrably hard, and ob- OF ARTS AND SCIENCES. 15 viously the original work of the artist, while the paint on the other part was soft, and no doubt had been put on by some one who had undertaken to make repairs. The artist said that all this, with a thick coat of varnish, should be removed, and that it could only be done safely by rubbing it with his own hand. When this was done, the picture had a mottled appearance, as if worms had attacked the wood and pene- trated through the paint in spots. The painting was after- wards sent to London, and completely restored by a person of great skill, who was at that time intrusted with the most valuable pictures that needed such repairs in England. When he had received and examined it, he inquired by whom it was supposed in America to have been painted ; and was told that it was thought to be by Leonardo da Vinci; to which he replied, " That may very well be." Mr. Gary remarked further, that when in Europe recently, retaining a vivid recollection of this picture, although he had not seen it for some years, (having only received it here within a few days as the bequest of a near relative, who had pur- chased it from the captain,) he had sought an opportunity to see, if possible, among the few undoubted paintings of this great master that remain, some one of the same subject, and found such a one in the Brera at Milan. It is unfinished, but the attention of visitors is directed to it in the catalogue, as among the most valuable to be seen there. As Leonardo was a man of varied powers, exercising them all, and had even, while at Milan, planned and superintended the work on a canal for the Duke, it is not surprising that he should have left a picture there unfinished. The Madonna in that is dif- ferent, but the child is very similar. Mr. Gary also drew the attention of the Academy to several other pictures, chiefly bequests from the same col- lection. One of them is a good specimen of the Pre-Raphaelite manner, with its hard outline, by Francesco Francia, who is said to have been an instructor of Raphael; and although 16 PROCEEDINGS OP THE AMERICAN ACADEMY that fact is not well established, the report, if such evidence were necessary, would mark him as one of the masters of his time. Mr. Gary was told recently in Rome, where this pic- ture was obtained, that it is well remembered there as " The Eternity " ; a female figure on a mound, holding a circle in one hand, and pointing upward with the other. Another painting exhibited by Mr. Gary is supposed to be a portrait of Titian, painted by himself in extreme old age. It was taken by a corsair in the Mediterranean from a Span- ish vessel, and carried into Tunis, when the American consul there was the late M. M. Noah, who became possessed of it, and brought it to New York about forty years ago. It is said that Titian was in Spain late in life, and that he painted to the last. A third is a large picture of Dogs watching Game, sup- posed to be by Sneyders and Rubens. It is well known that they frequently united their powers, the latter painting the landscapes. Mr. Gary remarked, that a few months since, in the great exhibition at Manchester, containing many of the choice pictures of England, he had seen one, unquestionably by Sneyders and Rubens, which confirmed the belief that the landscape in this is by Rubens. Although Sneyders usually preferred the violent action of a hunt, he sometimes painted quiet scenes like this. The picture once belonged to an old family in one of our Southern States, and was probably brought to this country far back in the last century. Another is an old and interesting picture, bearing some resemblance to the manner of Murillo, brought a long time ago from Smyrna, where it was left with some others by a Spanish artist, who died there. The subject is " The Educa- tion of the Virgin Mary," from the traditions of the Romish Ghurch. There were also a Magdalen by Guido, with strong marks of his style; and a Watteau, " The Gountry Party," obtained in Paris from the collection of the Due de Ghoiseul, after the French Revolution. OP ARTS AND SCIENCES. 17 Professor J. Wyman said that he had recently had an opportunity of examining a human foetus of the very early period of from the twentieth to the twenty-fifth day from conception. There were many points in its structure at that time which corresponded to the permanent condition in some of the lower animals. Some of these he proceeded to point out, illustrating his remarks on the blackboard. The eyes were found at this stage of development very far apart, in a position on each side of the head, similar to that which is per- manent in fishes and some of the lower mammals, and very small. The mouth and nostrils formed but one cavity, which would be divided off subsequently by the growth from above and on the sides. It was evident that the deformity known as " hare-lip " is only an arrest of development at this stage. The lateral position of the nostrils is like that which is seen in some of the adult monkeys of the New "World. The bran- chial fissures, resembling the gill-openings in fishes, are also visible at this early period, and one of them is known occasion- ally to remain at maturity. The extremities were merely in a rudimentary state, corresponding to what is sometimes seen in a certain class of monstrosities after birth. A rudimentary tail also existed, turning upwards towards the abdomen, and extending considerably beyond the rudimentary legs, subse- quently to be surrounded and concealed by the downward growth of these extremities and the pelvis. Professor Wyman also stated a fact, which he thought had not been heretofore noticed, that the yolk-sac grows and forms new granules some time after the development of the foetus has commenced. Professor Agassiz referred to a subject which had puzzled both botanists and zoologists, — the question of individuality. "What constitutes an individual ? He spoke of the various opinions of botanists on the subject, showing how diflicult it had been to distinguish between individuals and organs. Professor Braun considers independent axes in plants as con- stituting independent individuals. The same question has divided zoologists. Corals have by some been regarded as VOL. IV. 3 18 PKOCEEDINGS OF THE AMERICAN ACADEMY communities. Jelly-fishes have also been considered as com- pound beings. The question could only be determined, he thought, from a morphological point of view. A gamopeta- lous flower, in which all the petals are united, if we consider it with reference to this fact, has a striking resemblance to the medusa bell, the pistil in the flower being represented by the proboscis in the medusa. Professor Agassiz gave an account of the origin of Eudoxia and Aglaisma from the Diphyes, and pointed out the resemblance of the phenomena to those occurring in the vegetable world. There are thus, he said, dioecious communities, and there are also monoecious communities, among animals, as well as plants ; and he gave instances in illustration. The combinations of the sexes in their arrangement and order of succession along the parent stem were seen to resemble exactly those occurring among plants, while in some instances the order was the reverse of that in the vegetable world, seeming to complete the series, as it were. The conclusion, therefore, to which Professor Agassiz had been led, by these curious zoophyte forms of ani- mal life, was, that, as the animal buds are certainly individ- ual existences, their representatives in the vegetable world, viz. the analogous buds or axes, should likewise be regarded as individuals. Dr. T. M. Brewer exhibited some plates of birds' eggs, remarkable for their perfect representation of the originals, which had been obtained by an application of the photo- graphic process. The eggs were first photographed on a very small scale, to do away as much as possible with the aberra- tion of sphericity, and from these photographs a second set was obtained, of the full size of the egg, which were trans- ferred to stone and printed in colors. The result was a most perfect exhibition of the spots and markings of these objects, hitherto so diflicult to delineate. OP ARTS AND SCIENCES. 19 Four Iiuiidred and forty-seventli meeting. January 27, 1858. — Stated Meeting. The President in the chair. The Corresponding Secretary read the following letters, viz. : — From the Director of the Observatory of Breslau, March 2, 1857 ; Naturhistorischer Verein, Bonn, April 20, 1857 ; Royal Society of Sciences at Upsal, May 18, 1857 ; Zoolo- gisch-Botanischer Verein, Vienna, June 23, 1857 ; Academic Royale des Sciences de Stockholm, July 10, 1857; Royal Society of London, August 6, 1857 ; Royal Observatory, Greenwich, August 8, 1857 ; Societe des Arts et des Sciences de Batavia, October 20, 1857 ; and the Society of Arts, Manu- factures, and Commerce, London, November 19, 1857. ac- knowledging the receipt of the publications of the Academy — from the Naturhistorischer Verein, Bonn, April 20, 1857 Academic Royale des Sciences de Stockholm, July 10, 1857 and the Royal Observatory, Greenwich, December 3, 1857, pre- senting their various publications ; — also from the Zoologisch- Bctanischer Verein, Vienna, June 10, 1857, presenting its Transactions, and acknowledging the receipt of the Acad- emy's publications. Professor Agassiz presented a paper by Professor J. D. Dana, entitled, " On a Medusa of the Family related to Stepha- nomia," accompanying it with some observations of his own. Mr. Sherwin exhibited a Ley den jar, showing curious figures on its upper surface, caused by the explosion of gun- powder upon it by electricity. Dr. A. A. Hayes gave an account of the probable cause of the recent death from the combustion of gas in Davis's gas- stove. His remarks were followed by a conversation on the general subject of noxious gases, as exhaled from the ground, or otherwise generated, in which the President, Professor Rogers, Dr. Weinland, and Mr. F. H. Storer took part. 20 PROCEEDINGS OF THE AMERICAN ACADEMY Four hundred and forty-eighth meeting. February 9, 1858. — Monthly Meeting. The Academy met at the house of the Rev. Dr. Frothingham. The President in the chair. The Corresponding Secretary read letters, from E. B. Elliott, accepting Fellowship ; from the Royal Institution of Great Britain, November 18, 1857, and the Geological Society of London, December 3, 1857, acknowledging the receipt of the Academy's publications. Mr. Folsom exhibited to the Academy a copy of an ancient inscription obtained by him at Susa, on the north coast of Africa, some years since. The block bearing the inscription was placed in the corner of a shed-like building, and was probably the pedestal of a statue. The inscription is as follows : — L-TERENTIOAQVI LAEGRATTIANO QVAESTORIPRO VINCIAEAFRICAE AMICIOBPAREM IN VNI VERSOS ATQVE TALEMETPROPRI VMINSINGVLOS HONOREM L. Terentio Aqui- laB Grattiano Quaestori Pro- vinciae Africae Amici ob parem in universes atque talem et propri- um in singulos honorera. The exact signification of this inscription was commented on by several gentlemen, and its obscurity noticed. Professor Torrey suggested the word aeqvitatem for the words atqve TALEM, as a reading which clears up the sense ; Mr. Folsom having spoken of the inscription as being made out with difficulty, thus leaving room for the possibility of an error in copying. Dr. W. F. Channing exhibited specimens of lithographs made by means of a new application of photography. The process is known as Photo-lithography, and consists in re- ceiving upon a prepared lithographic stone the image of the OF ARTS AND SCIENCES. 21 object. After many experiments, Messrs. J. H. Cutting, Pho- tographer, and L. H. Bradford, Lithographer, have succeeded in so preparing the stone that the figure thrown upon it from the camera is fixed permanently there, and can be printed from as an ordinary drawing. The discovery promises to be of very great value in the arts. Professor A. Gray, referring to the popular opinion that squashes are spoiled by pumpkins, and melons by cucumbers or squashes, &c., when grown near each other, in consequence, as was thought, of cross-fertilization, remarked that it was a question whether the deterioration or alteration showed itself in the fruit of the season, that is, in the altered char- acter of the ovary which had been acted upon by alien pollen, or only in the next generation, i. e. in the cross-bred fruit. The former was the popular idea, or at least the more common one ; but if it was a case of cross-breeding, the alteration would naturally be looked for only in the progeny. As throw- ing some light upon this question, he gave an account of Naudin's recent investigations upon the cultivated Cucurbi- tacecB, showing that the species of Cucurbita (which, as to those in ordinary cultivation, Naudin had reduced to three or four) refuse to hybridize ; but that the application of the pollen of one species to the stigma of another, from which its own pollen is excluded, often causes the fruit to set and grow to its full size, although no embryos are formed in the seeds. Thus it seemed probable that alien pollen really acted upon the ovary in the cases referred to, and that the popular belief was correct. In confirmation of this view. Professor Gray exhibited several ears of Indian corn, — such as are familiar in the country, — in which two, and even three or four, sorts of grains (such as sweet-corn, yellow and white corn, &c.) occurred intermixed upon the same ear. This ap- peared to demonstrate an immediate action of the pollen upon the ovary, altering the character of the coat and of the albu- men of the grain. This might, or might not, be accompanied by cross-fertilization of the embryo, — a point which it would 22 PROCEEDINGS OF THE AMERICAN ACADEMY be interesting to determine by raising plants from the different grains of one ear, guarding them carefully against all extra- neous pollen, and noting the character of the resulting grain. Dr. A. A. Hayes said the fact had been determined by direct experiment ten or twelve years ago, when the question arose whether the same stalk would furnish to each variety upon it its normal quantity of phosphates. It was found that this was the case, and each variety was reproduced the next year from the seed thus raised. At that time he found that all the varieties contain a salt of the peroxide of iron, instead of the protoxide. Professor W. B. Rogers, referring to the discussion at the previous meeting on the noxious influence of various gases, particularly of carbonic acid and oxide, said, that, although all the recent Continental writers concur in regarding carbonic acid as simply negative in its influence, he had been surprised to find that the most recent English authorities still charge the whole of the pernicious effects of the inhalation of the fumes of burning charcoal to this gas, rather than to the oxide. Dr. W. F. Channing thought that one source of the injury from breathing impure air was the interruption to the process of endosmose and exosmose, which it was well known was produced by even a slight admixture of carbonic acid. Professor Rogers suggested that in crowded rooms organic compounds have a good deal to do with the deterioration of the air. Four Iiuudred and forty-uiutli meeting. March 9, 1858. — Monthly Meeting. The Academy met at the house of the Hon. Josiah Quincy. The President in the chair. The Corresponding Secretary read a letter from Sir John Herschel, acknowledging the donation of the Academy's Transactions; also one from Mr. Henry T. Parker, offering his services as agent for the purchase of books for the Acad- emy in England. OF ARTS AND SCIENCES. 23 Professor C. C. Felton, referring to a previous comnmni- cation of his on a fragment from Menander, remarked as follows : — " It will be remembered, perhaps, that I made a short communication to the Academy about a year ago, entitled ' Menander in New York.' In that communication an account was given of an ancient Greek writing-tablet in Dr. Abbot's Egyptian Museum, containing a passage of poetry, which, for reasons stated at some length, I supposed to be a hitherto unknown fragment of Menander. It was mentioned, also, that there were other tablets of a similar description, more or less broken, but evidently written over with copies of the passage contained in the first, though apparently by less practised hands. On two of the broken tablets there was substituted for a word in the text another, expressing a ludicrous impatience on the part of the writers, as much as to say, ' Deuce take it.' On re-examining these tablets and fragments of tab- lets, during a recent visit to New York, I noticed two or three interest- ing particulars which had before escaped my attention. On one of the fragments is written the following part of a sentence (adding the accents and breathings), 6 Ttpwros ev noi — ; the rest being obliterated. At the • bottom of another tablet is Avritten part of a word, (piXoirov — ; the re- mamder of this word, also, being obhterated. The first is evidently a portion of a sentence written by the master to encourage the scholars, perhaps by the promise of a reward. The syllable ttoi is evidently part of noiTjaoii' or Tvoirjaas, and the sentence was, ' He who first shall well perform his work — ' The rest must be left to the imagination. The second, ^CKottov — , is part of c^iikoivovos or (^CKoivovas, meaning careful, or carefully or industriously, and seems to be an expression of the mastei''s approbation of the manner in which the boy who owned the tablet had written out his copy. We have, therefore, in these tablets, — first, the copy set by the master ; second, a sentence of encouragement to the boys ; third, the master's approbation of one of them ; and, fourth, a lively expression, (f)6apr](T{Tai, of the impatience of two of the rogues, who had got tired of the irksome task of writing. From these hints we may form a pretty good idea of a Gra^co-Egyptian school in the Ptolemaic times. " Since last winter Dr. Abbott has sent from Egypt three wooden tablets of a different character and a later age. They are elliptical in shape, with a kind of triangular handle at each end. The inscriptions are funereal, recording the names, and in two of them the ages, of the 24 PROCEEDINGS OF THE AMERICAN ACADEMY persons whom they commemorate. The first was found in Sacara. On this the inscription is neatly cut into the wood. It is as follows : — Avov^icov Apre/xtSco- pou, evfioipet Anouhion, son of Artemidoros, farewell. In this inscription it is observable that the name of the deceased is Egyptian, with a Greek termination, while the name of the father is Greek. The name Anoubion occurs in Athanasius. The father of the Anoubion in the inscription was probably a Greek settler, and the son was born in Egypt, perhaps of an Egyptian mother. The form of the letters may belong to the second or third century before Christ. " The second is from Dongola, and the inscription is written with ink and a reed pen. It is as follows : — TL\-qvis vearepos fiapiva e^iaxrev err] Xe PUnius the younger, son of Marinas, lived thirty five years. Two or three things about this inscription are somewhat remarkable. It is considerably later than the preceding, as is evident from the Roman name Plinius, and from the style of the writing. The name is written in the abbreviated form, XlXr/i/t?, which belongs to a comparatively late period. Theodoretus (Lib. II. c. 11) makes mention of a 11X771/10? as an Egyptian Bishop in the fourth century, the age of Athanasius, banished by the Arians, under the influence of George of Cap- padocia. " The name Marinas is not found elsewhere, so far as I know ; but the form is analogous to Zosas {Zaaas, gen. Zcoo-a, which occurs in Boeckh's Corpus Inscriptionum) and many others. If the name is feminine, Marina, the syntax is that of the Latin ablative with natus, of which there are examples in the Corpus Inscriptionum (See Tom. II. p. 850). The name of Marina occurs in the Hagiology of the Oriental Church. She was a native of Pisidia, in Asia Minor, and was beheaded in A. D. 270. In the Ritual of the Greek Church, the 17th of July is given as the anniversary, or feast-day, t^s ayias peyaXo- pupTvpos Mapivrjs. For this fact, and the reference, I am indebted to my friend and colleague, Mr. E. A. Sophocles. " The person here mentioned, Plinius, evidently belonged to a Ro- OF ARTS AND SCIENCES. 25 man, perhaps a Christian family, who had learnt the Greek language in Egypt, but not well enough to avoid Latin idioms, if the last-mentioned construction is the true one. " The third contains also an inscription written with ink as follows, without accents, like the others. The name Pericles is also written with abbreviated characters. TlepiK\r]s AnoWcovLov e^icocrev err) irevTriKovra okt(» Pericles, son of Apollotiiics, lived ffty-eight years. Both of the names here are pure Greek, belonging apparently to a family who, though living in Egypt, maintained their Hellenic tra- ditions and Hellenic names unchanged. In the last two of these in- scriptions, we observe the ancient euphemistic manner of speaking of death : they do not say that Plinius and Pericles died at such an age, but that they lived so many years. " 1 also had time to examine another tablet, different from any of the preceding. It was made of some hard wood, probably cedar, care- fully smoothed, about a quarter of an inch in thickness, twelve inches in length, and six in breadth. Across one end three or four lines had been written with a reed pen and Egyptian ink. This writing was to a considerable extent obliterated, — only single letters and isolated syllables remaining legible, but not enough to make out the text. Beneath this was dx-awn a waving line, to separate it from the writing below, which, on a careful comparison, was evidently a number of copies of the writing at the top, though in an inferior hand. The form of the letters is characteristic of the chirography which prevailed from about the second century before Christ until the fourth or fifth century after ; and it may be placed, with a good degree of probability, at least as early as the first century before Christ. The writing at the top of the tablet is, again, evidently that of the schoolmaster, and that which occupies the remainder of the surface, consisting of three entire copies and part of a fourth, is evidently the writing of a scholar. The copies of the scholar are not so much obliterated as the writing of the master, and, on comparing them all, I was able clearly to make out every word of the text. It forms two iambic trimeters, which, supplying the accents, and correcting one word which is misspelt, read as follows : — yLaTTjv BpafieiTai kclv vnep Aa8av opafirj, VOL. IV. 4 26 PROCEEDINGS OF THE AMERICAN ACADEMY It may be translated : ' The man whom, sleeping, Fortune has not blessed, Shall run in vain, though Ladas he outran.' The style of these lines is pointed and pithy ; their structure is rhyth- mically perfect, and the composition undoubtedly belongs to the best age of the new comedy. The Greek word Tuxv does not mean exactly Chance or Fortune, but rather the secret power which allots to mortals their varied faculties and conditions in life. The thought conveyed in the passage is, that without natural gifts or endowments no great thing can be accomplished. Unless it is in a man, achievement, success, can- not come out of him. The word misspelled in the copies is 8pa[iiTai for Bpafieirai, which shows that when this was written ei and i were pro- nounced alike. I assign the composition of the lines to a period much earlier than that to which the handwriting of the copies belongs, but I would not venture to attribute them to any particular poet. Ladas was a Spartan runner who gained the victory in the BoXixos 8p6pos, or long race, and soon afterwards died. The precise period when he lived is nowhere recorded ; but as a bronze statue of him, by the sculptor Myron, was well known to the ancients, and as Myron flourished in the fifth century before Christ, Ladas must have gained his victory at least as early as the middle of that century. " Among the Greek epigrams, there are two in which the name of Ladas is commemorated ; both are ahkfr-nora, or anonymous. The first consists of a hexameter and pentameter, as follows : — AaSaj TO (TTaSiov eiB" rjXaTO etre hienTrj, Aaiixoviov TO Td)(os, ov8e (ppdcrai dwuTOV. Whether Ladas leaped or jlew through the stadium It is impossible to say ; his speed was divine. " The second is on the statue of Ladas by Myron. It consists of eight lines, hexameters and pentameters alternately, as follows : — Oios erjs (pevycov tov vnrjvepov, efnrvoe AaSa Qiipov, eV aKpoTOTca nvevpaTi 6e\s owxa Toiov exa\Kev(rep ae Mvpav, eVi iravTi x^po^cs Sco/xart Ilicraiov irpodhoKiav (TT€(pavov. ItXrjprjs eXTTiSos ccttIv, ciKpois fi cttI ;)(f''^fw"' dadp-a Ep(j}alveL KoiXcov i'vdodev e/c Xayoi/cov. Uridfjaei Taxa x^iXKOi enl (TTeCJjos, ov8e Kade^ei 'a ^aais • o) Tex"^ itvtvp.aTOS a>KVTepa. OF ARTS AND SCIENCES. 27 As thoic wast, 0 breathing Ladas, jieeing from the wind swift Thymus, 07i the top of the breeze placing thy foot, Such 3fyron cast thee in bronze, stamping upon all Thy body the expectation of the Piscean crown. Full of hope is he, and on the tip of his lips the panting breath Shows itself from the hollow flanks within. Soon the bronze shall leap for the crown, nor shall withhold it The pedestal ; 0 art, swifter than the breeze ! " The commentators have found some difficulty in understanding the words liT aKpoTUTco TTvev/xaTi 3e\s ovvxa, ' placing thy foot upon the top of the breeze ' ; but they describe exactly the attitude of John of Bo- logna's Mercury, a well-known work of art, which furnishes the best commentary on the passage in question. " Among the Roman poets Ladas is alluded to once by Catullus, twice by Martial, and once by Juvenal ; Pausanius, the Greek travellei:, mentions him three times. In Lib. ii. 19. 7, he speaks of a statue of Ladas in the temple of Lycian Apollo at Argos ; in Lib. iii. 21. 1, he mentions the monument of Ladas on the bank of the Eurotas, a short distance out of Sparta ; and in Lib. viii. 12. 3, he states that on the road leading from Mantmea to Orchomenos, there was a place called the stadiam of Ladas, because Ladas used to exercise himself thei'e as a preparation for the Olympic games." Rev. N. L. Frothingham said : — " It is with great diffidence that I venture to add anything to what my learned friend has just offered to the notice of the Acad- emy. But I am very much struck with the coincidence of thought between the fine passage which he has restored to Greek literature and a verse in one of the Hebrew Psalms. That verse is rendered so incorrectly in our received English translation, that the paral- lelism does not appear. But it will be brought out, if we read the whole context thus, as it ought to be read : ' Except the Lord build the house, they labor in vain that build it; except the Lord keep the city, the watchman waketh but in vain ; in vain for you to rise up early, to sit up late, to eat the bread of anxiety, while he giveth to his beloved •when they are asleep.' Now, if, instead of the word Fortune, — Tvxr] I think it is m the Greek sentence, — we should substitute some such expression as Divine Providence, the sentiment would correspond per- 28 PROCEEDINGS OF THE AMERICAN ACADEMY fectly with that of the sacred Psalmist. Exchange the heathen phrase for a BibHcal one, and there results the same thought ; and a very- profound and noble thought it seems to me to be." Mr. Charles Folsom referred to the fact, that tablets similar in form to that described by Professor Felton are still in use, in Northern Africa, for the same purpose. Mr. Folsom also alluded to the inscription which he had laid before the Academy at the previous meeting, and an- nounced his acceptance of Professor H. W. Torrey's version, by which the obscurity and inelegance of the inscription are removed. The President said he was induced, by the discussion on some of the terms in the inscription, to allude to a point which had often occurred to him, namely, the impropriety of the use of the word Respuhlica in the Catalogue and Diplomas of Harvard University ; and he proceeded to show that classical usage does not sanction the application of this word in a geographical sense, as is the case in the instances above mentioned. Professor E. N. Horsford exhibited a number of photo- graphs of a piece of recent ice, by which its intimate structure was very accurately shown. Mr. Henck gave a demonstration of a general theorem, which he believed to be new, relating to circles tangent to each other and to two given circles, — the given circles being also tangent to each other. This theorem embraced as par- ticular cases the two remarkable propositions concerning similar circles given by Pappus Alexandrinus in the fourth book of his Mathematical Collections. In the course of the demonstration, several interesting properties were developed, some of which he thought had been hitherto unnoticed. Dr. A. A. Hayes made a communication " On the Corro- sion of Yellow- Metal Sheathing, in Sea-water," as follows: — " In some earlier researches on the chemical and mechanical consti- tution of alloys, I have demonstrated the existence of several definite OF ARTS AND SCIENCES. 29 compounds of two metals, or one metal with a metalloid, united to form a ductile body. " The chemical analysis, by the proximate way, of yellow-metal, has shown that, when it is formed from pure copper and pure zinc, there exist Uvo distinct alloys. One of these is the well-known alloy of two equivalents of copper, united to one equivalent of zinc ; the other is composed of one equivalent of each of these metals, in chemical union. A mass of yellow-metal presents, therefore, a crystalline aggregate of two alloys, in which the percentage proportion of copper is sixty, while the zinc has the proportion of forty ; and analysis having in view the percentage of these metals only, gives usually nearly these quantities. "As the relation of zinc to oxygen. dilFers remarkably from that of copper, it might have been inferred that an alloy composed of one equivalent of copper and one equivalent of zinc would also have a dif- ferent relation to oxygen, when compared with one that contains two equivalents of copper. Considering sea-water action simply as oxida- tion, under the most favorable conditions for combination without the application of artificial heat, the study of the corrosion of yellow-metal under exposure offers a simple and unobjectionable course for obtaining trustworthy facts. " It is well known that this yellow alloy, when carefully secured on sailing-vessels, quickly exhibits marks of corrosive action when more or less immersed in sea-water. The rapidity of this action diminishes after the formation of a certain proportion of oxide, which, slightly mixed with chlorides, serves as a protecting surface to the metal be- low, by close adhesion. A serviceable duration of thirty-six to forty- eight months is expected, in sheets of ordinary thickness. " The specimens which accompany this paper are parts of sheets which have been exposed nearly forty-eight months. In the one which represents the alloy in the condition it was in when it was placed on the vessel, at one part, analysis shows a percentage composition — neglecting traces of lead and other metals — of copper 60, zinc 40. " Another specimen, which has been corroded deeply, exhibits to the naked eye a mechanical structure unlike that of the first jjiece : it re- tains only part of its original ductility, and this unequally. Crystalline particles are seen, and, even in the interior of the mass, oxygen has penetrated, and combined with the metals. The composition of this piece is, copper 63.6, zinc 33.9, oxygen 2.0, lead and other metals, 0.5 = 100. 30 PROCEEDINGS OF THE AMERICAN ACADEMY " In the third piece, which is a part of the last, corrosion has pK)- ceeded to the extent of destroying cohesion nearly : the particles re- main attached only through an interlacing of contiguous parts, separat- ing at once when the sheet is doubled, or beaten into crystalline grains, coated by a tliin layer of oxide. By the chemical action the compo- sition of this piece has undergone a great change, and analysis gives the percentage of copper 74.5, zinc 22.8, oxygen 2.1, lead 0,6 = 100. " At several points deep cavities, and in many sheets holes, exist ; these have been caused by the corrosion around grains of slag, which had been rolled into the mass of the metal. In such cases the slag is a negative body to the surrounding metal, after corrosion commeyices, and an increased power of action is thus gained, locally. Carefully con- ducted experiments prove the correctness of the theoretical deduction, that the alloy represented by copper, two equivalents, and zinc, one equivalent, has an inherent negatively electrical condition, when com- pared with the alloy of one equivalent of copper and one equivalent of zinc ; and this state has been found in the cleaned parts remaining of sheets which have suffered the largest amount of corrosion. " But the chemical evidence which we thus obtain of the abstraction of the most positive alloy by sea-water action, is not more interesting than that of a physical character. Every piece which has been disin- tegrated presents highly crystalline — almost regularly crystallized — assemblages of the alloy of two equivalents of copper to one equiva- lent of zinc, as its mass. " Now, in the ductile metal before exposure, we detect the facets of these crystals of this alloy, which might be mistaken for those found in many laminated pure metals, while the chemical action, being confined to the most positive alloy, brings them more and more distinctly to view, enabling us to prove that these large masses of metal, in corroding, divide mechanically, as well as chemically, into two pre-existing alloys ; one oxidizing and being washed away, while the other, nearly pure, remains coherent to some extent. " It had been long known that the corroded metal, when about to be re-manufactured, called for the addition of zinc, in order to form the normal alloy ; the facts here stated prove that the abstraction of the larger proportion of zinc arises from the removal of the most positive of two alloys, which were united in the perfect metal as a homogeneous mass. " As multiplied observations have shown that the merchant service OF ARTS AND SCIENCES. 31 requires a certain continuous solution of the sheathinff metal, in view of the present enormous consumption, this subject has economical bearings of great importance. It is probable that an alloy, forming part of a mixed metal, might be found, less positive in its relation than the one removed from yellow-metal, and yet sufficiently oxidizable to preserve the surface clean while the vessel is in motion. Such an alloy united to brass would present the mechanical require«i,ents, in union with a chemical resistance called for, in sheathing metals." Professor W. B. Rogers gave an account of his experiments on the production of sounds by flames within glass tubes, and explained the principle of their formation. Professor Felton alluded to the newly discovered process of Photo-lithography, which had been announced to the Academy by Dr. W. F. Channing at the previous meeting, and sug- gested that it offered an admirable method for the reproduc- tion of the inscription on an ancient papyrus in Dr. Abbot's Egyptian collection. He had spoken to the inventors of the process, and the plan of reproducing it in this way seemed to them quite practicable. If it could be done, this would be the second inscription of that kind which had ever been published. Dr. Channing said he had no doubt the inscription could be lithographed by this process at a moderate cost, and moved that the Publishing Committee take into consideration the expediency of thus bringing before the scientific world this interesting papyrus. The motion was seconded by Professor Felton, and adopted. Dr. Channing was added to the com- mittee for this purpose. Four Iiuudred and fiftieth meeting. April 13, 1858. — Monthly Meeting. The Academy met at the house of Hon. C. F. Adams. The President in the chair. A letter was read from Mr. John Akhurst, of Brooklyn, N. Y., dated March 30, offering to forward to the Academy certain 32 PROCEEDINaS OF THE AMERICAN ACADEMY publications of European Societies, addressed to the Acad- emy, which had come into his possession at a custom-house sale, on payment of certain charges. Also a letter from the Librarian of the University Library, Cambridge, England, February 3, 1858, acknowledging the receipt of the Acad- emy's publications. Professor Lovertng, for ihe Committee on Meteorological Observations, read the following report : — " At a meeting of the Academy on the 27th of May, 1856, Dr. B. A. Gould, Jr. offered some remarks on the difficulties which meteorolo- gists (particularly in Europe) find in obtaining meteorological obser- vations made in Boston and its vicinity. Whereupon it was voted that Professor D. Treadwell, Professor Lovering, and Mr. Jonathan Hall be a committee to take the subject into consideration. During the long period which has elapsed since their appointment, this committee have not lost sight of this subject. After carefully examining the materials at their disposal, they have begun with the publication of Mr. Jonathan Hall's observations on the thermometer, made at No. 51 Hancock Street, Boston, since January 1, 1821. These observations, made three times a day, with scarcely a single interruption, and continued down to the present time, have been published for a period of thirty -six years, ending with January 1, 1857 ; together with observations on the quantity of rain which has fallen since 1823, or during a period of thirty-four years. This publication fills eighty of the quarto pages of the Memoirs, and terminates with tables which show the mean heat of each year, and the mean heat of each month, for thirty-six yeai's ; also, the mean heat of the whole period : the same means also for the three particular hours of the day at which the observations were taken. '' The committee propose, Avith the approbation of the Academy, to publish next the meteorological observations of the late Dr. Enoch Hale. Dr. Hale's observations on the thermometer, winds, and clouds began January 1, 1818, and ended December 31, 1848, covering a period of thirty-one years. His observations on the barometer began December 1, 1818, and ended December 13, 1848, extending over a period of thirty years and a few days. The publication of these obser- vations is due, not only to the cause of science, but also to the memory of Dr. Hale, who was recognized by the Academy as its meteorological observer, and who was encouraged to contmue and improve his obser- vations by its aid and advice." OF ARTS AND SCIENCES. 33 On motion of Professor Gray, it was voted that the report be accepted, and that the committee be requested to continue their labors. On motion of Mr. G. B. Emerson, it was voted that the subject of the preservation of the meteorological papers of the Academy be referred to the same committee. The Publishing Committee, to whom had been referred the subject of publishing a photo-lithographic copy of the papyrus in Dr. Abbot's Egyptian Museum, reported progress, giving details of the probable extent and expense of the work. Pro- fessor Lovering stated that it was Professor Felton's wish that the publication might be postponed, as he expected to be absent from the country during the coming summer. Professor W. B. Rogers addressed the Academy on the efflux of gases from a cylindrical orifice. He stated that the fluid escaped in the form of rings, each section of the ring revolving in its own plane. Professor Jeffries Wyman referred to certain experiments he had made, to ascertain the nature of the impression made by falling masses of water on plastic clay. He found that, in falling, the drops became rings, the section revolving inwards and upwards in its own plane, as indicated by the impression in the clay, its inner edge being higher than the outer, and marked by converging lines. Professor Rogers explained the method by which this phe- nomenon resulted, as he thought, from the mechanical forces called into operation. Professor Gray then presented the following communica- tion : — Notes upon some RiibiacecE, collected in the United States South- Sea Exploring' Expedition under Captain Wilkes, ivith Characters of Neiv Species, 8fc. 1. Timonius, Bohea, and so77ie other Guettardece. These two genera were confused by De CandoUe, and have not been satisfactorily cleared up by Ivortlials, who occupied himself with them several years ago, nor by Miquel, who, in his Flora of Netherlands VOL. IV. 5 34 PROCEEDINGS OF THE AMERICAN ACADEMY India, has followed Korthals' steps. For the information which enables me to fix their synonymy, and give their true characters, I am indebted to the Nestor of our science, Robert Brown. Nearly half a century ago, this most sagacious and conscientious botanist had identified with Timonius of Rumphius a plant collected by Sir Joseph Banks at En- deavor River, and by himself on the same coast of tropical Australia ; and in the Banksian herbarium he had referred the Eritlialis of Fors- ter (not of Linnteus) to the same genus. An allied plant of the Sand- wich Islands (the type of Gaudichaud's genus Boheci) was also known to Mr. Brown, and suspected to be not congeneric with Timonius. Desfontaines, in the year 1820, established his genus Polyphragmon upon the original Timonius. In 1829, Chamisso and Schlechtendal pubhshed in the Linnsea their genus Burneya, founding it upon Forster's Erithalis, and adding the Sandwich Island plant, with some doubt, as a second species. Still earlier, however, Gaudichaud had issued his plate of the latter plant, founding on it his genus Bohea ; but his volume of letter-press, although it bears the date of 1826, was not published until 1830. In that year De Candolle published the fourth volume of the Prodro- mus. Adopting, in place of Burneya, the name of Timonius, — proba- bly from the Banksian herbarium, — he followed Chamisso and Schlec- tendal in referring the Sandwich Island plant and Forster's Erithalis to the same genus, but took the carpological characters wholly from the former. That he had no idea of the fruit of the latter, and that he had not in fact recognized the Timonius of Rumphius, appears from his having referred the fruit of Forster's plant, as figured by the younger Ga3rtner, to another genus, viz. the Polyphragmon of Desfontaines, which is pretty clearly the original 2Ymom'iis. More recently (in 1849 ?) Korthals undertook to elucidate these plants. But he wrongly describes the internal structure of the seed ; he refers the original Timonius to Polyphragmon, instead of Polyphrag- mon to it ; he divides congeneric species between his Bohea and Poly- phragmon ; and, finally, he had not the means of knowing the leading character of Gaudichaud's genus Bohea, i. e. the irabricative aestivation' of the corolla. Lastly, Miquel follows Korthals implicitly ; but in his addenda to RuhiacecB (Fl. Ind. Bat. 2, p. 355), he states that the fruit of Bohea is the same in structure as Polyphragmon. Still the fact that the fruit of the original Bohea is figured and described quite otherwise does not arrest his attention nor suggest the true state of the case. OF ARTS AND SCIENCES. 35 Korthals should have the credit of rightly making out the character of the singular plug which occupies the summit of the pyrena3 of the fruit in these plants ; but he apparently was not aware that A. Richard had remarked the same thing in Gmttarda, and rightly understood it. It is, in fact, a general Guettardosous character, as also is the exalbu- minous seed, now first made known. The amended characters, and the synonymy of the two genera in question, are subjoined, with the diagnoses of some new species. TIMONIUS, Rumpli. Flores polygami. Calycis limbus cupuliformis persistens. Corolla hypocraterimorpha, intus nuda, lobis 4-10 testivatione valvatis. Sta- mina tubo inserta ; filamentis brevissimis. Stylus apice 5 - 10-fidus, lobis subulatis ina3qualibus intus stigmatosis. Ovarium pluriseriatim multiloculare. Ovula in loculis solitaria, funiculo brevissimo cupuli- formi suspensa. Drupa polypyrena ; pyrenis numerosissimis angustis circa axim elongatam imbricatim et multisei'iatim superpositis, puta- mine apice pervio funiculo seminis strophiola^formi (obturamenti sube- rosi instar) clause. Semen lineare vel oblongum : albumen vix uUum. Embryo semini conformis, cylindricus ; cotyledonibus radicula multo brevioribus. — Arbores vel frutices, stipulis interpetiolaribus perulatis vernatione convolutis mox caducis ; foliis coriaceis, venulis (pagina superiore pra3sertim) stepius tenuissime et crebei-rime reticulatis ; pe- dunculis axillaribus uni - plurifloris. Timonius Rumph. Herb. Amboin. 3, p. 216, t. 140; R. Broivn in Herb. Banks ^ Mss. Anil. 1810. Porocarpus, Gcertn. Fruct. 2, p. 473, t. 178. Erithalis, Forst. Prodr.; Gcertn. f. Suppl.p. 92, t. 196, non Linn. Polyphragmon, Desf. in Mem. Mus. Par. 6, p. 6, t. 2; A. Rich. Mem. Rub. p. 151. Burneya, Cham. ^ Schlecht. in Linna^a, 4, p. 189, excl. sp. No. 2. Timonius (excl. sp. & char.) & Polyphragmon, DC. Prodr. 4, p. 445, 461. Bobea (excl. syn. Gaud.) & Polyphragmon, Korthals in Neder. Kruidk. Arch. 2, p. 212, 215 ; Miquel, Fl. Ind. Bat. 2, p. 234, 260. Timonius Foesteri, DG. I. c. Erithalis polygama, i^ors^. E. uniflora, Banhs ; Gcertn. f. Burneya Forsteri, Cham. 8^ Schlecht. I. c. Polyphragmon minus, A. Rich. I. c. ; DC. I. c. Bobea Forsteri & B. Gtertneri, Korthals, I. c. — South Sea Islands. Timonius sapot^folius {Gray, in Bot. Pacif. Expl. Exped. ined.) : foliis etiam nascentibus cum stipulis majusculis ramulisque glaberrimis elliptico-oblongis utrinque acuminatis venulis creberrimis 36 PROCEEDINGS OF THE AMERICAN ACADEMY lineato reticulatis quasi tenuiter nervoso-striatis, areolis lineari-elongatis parallels, venis primariis obsoletis ; pedunculis fructiferis petiolum jEquantibus ; pyrenis linearibus, putamine tenui. — Feejee Islands. TiMONius AFFiNis {Gray, I. c. ined.) : foliis ovalibus obscure penni- veniis, venis subreticulatis, retibus venularum varie versis hinc inde contrariis ; — cjsterum pr£ecedentis. — Feejee Islands. BOBEA, Gaudichaud, Flores hermaphroditi (an semper?). Caljcis limbus cupuliformis persistens. Corolla hypocraterimorpba, glabra, intus nuda, lobis 4 ovalibus obtusissimis asstivatione valde imbricatis. Stamina tubo in- serta ; filamentis brevibus. Stylus superne ina^qualiter 3-10-fidus, lobis filiformibus apice introrsum stigmatosis. Ovarium 3 - 10-loculare. Ovula in loculis solitaria, funiculo brevissimo strophiolEcformi suspensa. Drupa 3 - 10-pyrena ; pyrenis parallelis osseis crassis, sarcocarpio tenui. Semen cylindricum, cum funiculo strophiolato crassissimo duro (instar obturamenti) eodem latius loculum angustum implens : albumen vix ullum. Embryo semini conformis ; radicula oblonga cylindrica ; cotyledonibus brevibus subcomplanatis. — Arbores Sandwicenses ; sti- pulis squamaceis interpetiolaribus discretis caducis ; venulis foliorum creberrime ac tenuissime reticulatis ; pedunculis uni — paucifloris. Bobea, Gaudich. in Bot. Voy. Freyc,p. 473, t. 93, non Korthals. Bobsea, A. Rich. Mem. Rubiac. p. 135. BurneyEe sp. No. 2, Cham. ^' Schlecht. in Linncea, 1. c. Timonius, DC. Prodr. 4, p. 461 ex char., non Rumjyh. 1. Bobea elatior (Gaudich. L c.) : glaberrima ; foliis obovatis oblongisve basi in petiolum sat longum attenuatis ; pedunculis gracili- bus 3 - 7-floris, flore intermedio sessili, omnibus basi subcupulatis. — Oahu, Sandwich Islands. 2. Bobea brevipes (Gray in Bot. Expl. Exped. ined.) : foliis oblongis vel subovatis breviter petiolatis, junioribus pra^sertim ramisque hirto-pubescentibus, pedunculis brevibus unifloris ? — Oahu, Sandwich Islands. The name of Bohea is to be preferred to Burneya, not only because Gaudichaud's plate was earliest published, but because Chamisso's genus was founded primarily upon Forster's Erithalis, which is a gen- uine Timonius. The aestivation of the corolla (now first made out), the completely hermaphrodite blossoms, as far as is known, and the uniseriate, com- OF ARTS AND SCIENCES. 37 paratively few, and very thick-walled pyreno?, amply distinguisli Bohea from Timonms. From the osstivation, the two genera would fall into different subtribes, if we implicitly follow the distribution of the Goffe(SS'. speciosa) serie naturali aperte connectit. n. Arctics vel Subarctic^. 20. S. HoOKERiANA, Barratt in Hook. Fl. Bor.-Am. 2, p. 145, t. 180. Amentis masculis est S. daphnoidi subsimilis, amentis foemineis S. hastatce, foliis autem S. lanatce ! 21. S. LANATA, L., var. Americana: capsulis hirsutiusculis. — Forma a. S. Barrattiana, HooL I. c. p. 146, t. 145 : capsulis sericeis; foliis tomentosis magnis, amentis stepius lateralibus. /?. S. Eicliardsoni, Hooli. I. c. p. 147, t. 182 : capsulis et foliis glabriusculis ; foliis minori- bus ; amentis subterminalibus. In Lapponia S. lanata sub multis formis frequens occurrit ; sunt quasdam his Americanis tarn similes ut nee habitu nee notis uUis dis- tingui possint. Exstant apud nos format numerosae ad S. glaucam, sed optime ad S. hastatam accedentes, quarum folia glabrescunt, et amenta lateralia fiunt. Americana potius ad S. Lapponum vergit ; hcec etiam multo humilior crescere videtur (pr?esertim S. Richardsoni). E Siberia partibus variis eadem variationes etiam adsunt. 22. S. SPECIOSA, Hooh ^ Am. Bat. Voy. Beech, p. 130 ; Hook. I. c. p. 145 ; Seemann^ Bat. Voy. Herald, p. 40, t. 10. Quanquam Salici cuidam, S. amygdalince affini, hoc nomen jam 1818 imposuit Host, id tamen huic speciei Americans conservandum censeo, ut pote Salici omnium in regionibus boreaUbus crescentium facile speciosissimaj aptissimum. 23. S. Lapponum, L.; Hook. I. c. p. 151 ? S. Stuartiana, Smith, Hook. I. c. Fateri debeo me nulla specimina Americana hujus speciei certe vidisse. Non sine htesitatione permulto hue refero Salicem earn " pul- chram," de qua Chamisso (Linn^ea, 6, p. 543) in America arctica oc- cidentali pluries a se lecta, mentionem fecit. Amenta sessiha: capsuljB 60 PROCEEDINGS OF THE AMERICAN ACADEMY non pedicellatge, sed folia fere ut in S. phjUcifolia utrinque acutata, viridia, subtus pallidiora, glaberrima : stipulaj persistentes lineares. Unicum tantum specimen ex herb. Berolinensi vidi. Notandum ut Salicem Lapponum, alpium summarum incolam, etiam folia nonnun- quam habere glabrescentia. 24. S. CANDIDA, Willd. ; Hook. I. c.p. 148; /. Carey in Gray, I.e. D. Caprea, Fries. I. CiNERASCENTES, Fries. Stigmata sessilia ! Amenta prtecocia, vix pedunculata. 25. S. (caprea) capreoides, n. sp. : amentis sessilibus bracteis paucis et minutis primo sufFultis densifloris ; capsulis pedicellum quin- quies superantibus sericeis ; foliis obovatis vel oblongis basi angustatis subtus glaucescentibus pilis rufescentibus villosis denique (nervis ex- ceptis) glabris. Hab. California ( Coulter) et Oregon, Herb. Hook. S. caprea vera Europcea, quantum scio, in America nuUibi reperta, hsec forma eam ibi optime representat. Quod ad fructificationis pai'tes vix uUa exstat differentia essentialis. Amenta mascula tamen angus- tiora, sed foeminea crassiora, utraque quam in nostra breviora ; squamte fere majores, atrataj, obovato-spathulatas ; capsuliB e basi gibbo fere cylindrical, 2J- lin. longas ; stigmata sessilia erecta. Folia novella utrinque rufo-hirsuta, subtus etiam vellere albo plus minus denso ob- tecta, denique denudata, integerrima, dura. Gemmte, ut in S. caprea vera, subglobosaj glabrae ; rami sa'pius obscuri et • glabri. — Proxima huic sine dubio est S. hrachystachys ; qua) tamen differt amentis adhuc brevioribus, foliis densissime albo-velutinis. 2G. S. ciNEREA, Z. ? — In herbaria Hookeriano specimina adsunt duo, quantum videre possum ad banc speciem referenda, quibus annexus erat ramus foliis parvis glabris, omnino iis S. rostratce simillimis, obtectus. Vereor ne confusione quadam commixta sint ? Hab. " Thickets along rivulets, Columbia River valley, near Fort Colville ; 15-20 feet high, shrubby, C. A. Geyer."* Num S. caprea vel S. cinerea hie crescit ? 27. S. (aurita) brachystachys, Benth. PI. Hartweg, Sf Herh. : * These specimens are described, under the name of S. f/risea ? in Hook. Kew Jour. Bot. 7, p. 372. A. G. 1 OF ARTS AND SCIENCES. 61 amentis sessilibus nudis brevibus ovatis ; squamis pilis longissimis seri- ceis dense vestitis ; capsulis villosis acu talis, pedicello nectarium 4- 5-ies superante ; stylo nullo ; stigmatibus longis integris divaricatis ; foliis obovatis subtus densissime velutino-tomentosis demum glabres- centibus rufescenti-nervosis. Hab. California (woods near Monterey), Hartioeg, no. 1957. Frutex dicitur 4-orgyalis, sat similis videtiir prioribus ; sed differt, amentis semiuncialibus, squamis mediocribus rufescentibus pilis duplo vel triplo longioribus densissime sericeis, pedicello breviore, foliis 14 unc. longis supra medium unciam latis subtus moUiter velutinis. E nostris speciebus in Europa indigenis S. aurita L. sine uUo dubio huic tarn similis ut banc facile subspeciem ejus haberem. Sub nomine S. Scouleriance Barratt, Hook. I. c. p. 145 in herbario Hookeri vidi specimina duo florentia ad S. hrachystachym absque uUo dubio pertinentia, et specimen foliatum S. Sitchensis Sanson. Hoc nomen itaque e Salicum turba excludendum. 28. S. VAGANS, Anders. — Qui S. depressam Scandinavia?, S. Star- heanam Rossiaj et Borussice, et S. rostratam America? Borealis eamque formas attente, nulla certa opinione prteoccupatus, comparare studet, non potest quin eas omnes ad unam eandemque Salicum speciem pertinere credat. Hoc mibi saltem, specimina fere innumera, e variis terris inspicienti, omnino persuasum babeo. Nominibus jam allatis formas varias tantum spectantibus, vagantis nomine speciem notare volui, quo3 per teiTas plurimas septentrionalis late vagatur, qute insuper notis admodum vaga est. Variat statura, de qua Linnteus in Flora Lapponica, no. 361 "arbor parva," sed in Flora Suecica "arbuscula ad terram depressa " : variant folia nunc glabra nunc villosa, nunc magna nunc parva, nunc lanceolata nunc ovata vel obovata : rarissima autem variant amenta laxiflora, capsulis angustis (glabris seu hirtis) subcylindricis longissime pedicellatis et stigmatibus coronatis sparsim ornata. His prjemissis hujus specie! sequente modo proponendas censeo : — 1. Cinerascens : foliis velutinis. Var. a. LiNN^ANA (cfr. Fries, Nov. Mant. 1, p. 59) : foliis j)lei'um- que obovatis supra demum glabratis. Linn. Fl. Lapp. no. 361 (sec. Fries). S. livida /5. cinerascens, Wahl. Fl. Lapp. no. 273. S. depressa, a. cinerascens. Fries, I. c. p. 57. S. depressa, velutina, ICoch. S. sphacelata. Smith., nomen ambiguum !) 62 PROCEEDINGS OF THE AMERICAN ACADEMY Forma elata : orgyalis, "Walil. L c. " DEPKESSA : foliis crassioribus utrinque tomentosis. S. de- pressa, L. Fl. Suec. S. livida §. in alpibus, Wahl. ; Fries, I. c. Hab. ex alpibus (forma depressa) juxta flumina (forma elata) in regiones sylvaticas Lapponia3 descendens. Var. /?. occiDENTALis : arbor 4-15-pedalis ; foliis plerumque lance- olatis demum rigidis et la3viusculis sinuato-crenatis (fere ut in S. caprea). S. rostrata, Richards. ; Hook. I. c. ; Gray, I. c. Hab. per Amer. Sept. omnem et in Siberite partibus orientalibus. 2. Glahrescens : foliis glaberrimis lucidis subtus pallidioribus. Var. a. intermedia : frutex parvus et liumilis ; foliis sjepius late obovatis subcoriaceis ; amentis masculis tenuibus ; staminibus flavis ; pedicello capsularum nectarium sexies superante. Forma livida : foliis subtus lucido-glaucis ; capsulis glabris vel sericeis, S. livida, a. Wahl. S. depressa, §. Fries. " BicoLOK : foliis subtus glaucis baud lividis. S. depressa, y. Fries, I. c. Hab. in regionibus mediis {livida) et meridionalibus (hicolor) Suecire. Var. p. ORiENTALis : frutex altior ; foliis majoribus utrumque gla- berrimis margine sinuatis ; amentis masculis crassioribus ; staminibus fulvis ; capsularum pedicello nectarium scepe novies superante. S. Starkeana, Willd. Hab. in Silesia et prope Kocnigsberg Borussiae, necnon per Rossiam medium et septentrionalem. Et J. Carey in Gray, Man. 1. c, et Hooker banc speciem in America valde esse variabilem affirmant. Formas majores foliis fere ut in S. caprea longis (sed multo angustioribus), obovatis et acutis, margine sinuatis, textura duris, subtus tomentosis, supra obscure vii'idibus in formas minores foliis lanceolatis aut obovato-oblongis, junioribus ru- fescenti-pellucidis, nervis subtus elevatis costatis abire videmus, omnino ut s. d. S. depressa in Scandinavia ubi forma cinerascens altitudinem orgyalem sed forma livida vix bipedalem attingit. Has formas lividas et hicolores ex America non reperimus. Amenta mascula S. rostratce omnino ut in S. Starheana, i. e. quam in vera S. depressa paullo longi- ora et crassiora, pilis fulvis squamarum magis hirsuta ; amenta foeminea vulgo quam in nostra longiora, sed capsula3 omnino a^quales. Etiam in America margines sylvarum et pratorum inbabitare dicitur. OF ARTS AND SCIENCES. 63 29. S. Geyeriana, n. sp. : amentis breve pedimciilatis bracteis paucis sufFultis brevibus subramifloris ; capsulis ex ovata et crassa basi conicis tenuiter sericeis, pedicello nectarium sexies snperante ; stigma- tibus sessilibus cruciformibns ; foliis lineari-lanceolatis planis utrinque molliter tomentosis integerrimis. [S. rostrata, Hooh in Kew Jour. Bot. I. c] Hab. Missouri v. Oregon, Geyer, coll. No. 286 ! Priori vakle similis, sed differt babitu toto, ramis interdum glauces- centibus, foliis (novella tantum vidi !) multo angustioribus, nee ullo modo obovatis, integerrimis, sed prajcipue amentis foem. triplo breviori- bus subrotundis, nee cylindricis, et capsulis e basi valde crassa acutatis. Amenta mascula etiam breviora et crassiora ; stamina magis aureo- fulva. Habitu amentorum propius ad S. repentem appropinquatur. II. ViRENTES. Amenta sa3pius pedunculata, foliis sen bracteis suf- fulta : capsulas brevius pedicellatoe, stylo producto : folia exsicca- tione non nigrescentia. 30. S. Drummondiana, Barratt in Hooh. Fl. Bor.-Am. 2, p. 144. Species pulcberrima, ramis elongatis nitidis castaneis vel rufis, amen- tis sessilibus, et capsularum forma, magnitudine, et indumento sequent! proxima et valde similis ; sed differt abunde foliis (que iis S. taurines baud dissimilia) subtus vellere densissimo candido lanatis. Stylus in capsulis junioribus stigmatibus bifidis ajquilongus, in capsulis adultis magis productus videtur, brevior tamen ac in S. discolore. 31. S. (phylicipolia) discolor. — S. discolor, 3IuJil. ; Hooh. I. c; J. Carey in Gray, I. c. p. 414. S. phylicifolia, /. Carey., I. c. ^. 4] 6 ? Specimina pleraque numerosa, qute attente examinavi, parum differt a vera S. phylicifolia, qualis in Europoe alpestribus crescet vulgatissima et eximie polymorpba, eique saltern exacte analoga. Folia quam in nostra majora, adulta rigidiora et margine irregulariter sed non profunde repando-serrata, stipulje in surculis et ramis novellis vegetis sat conspi- cuae, amenta omnino prajcocia, capsulse angustje sericefe, et squamae atras longe pilosoe. In pluribus herbariis hsec species et S. eriocepliala confusa3. Nullam aliam S. phylicifoliam ex America vidi, nisi forsan sequentem. — Nonne species apud nos loca alpina potissimum amans, quum in Americas regiones magis temperatis inhabitat, hoc modo mutatur ? 32. S. PHYLicoiDES, n. sp. : amentis subsessilibus elongatis crassi- 64 PROCEEDINGS OF THE AMERICAN ACADEMY usculis ; capsulis breve pedicellatis ovatis longe acutatis tenuissime piibescentibus ; stylo elongato integro ; stigmatibus brevissimis indivisis ; foliis lanceolatis acuminatis basi angustatis margine integris subtus pallidioribus nee glaucis. — Forma latifolia : foliis 3 - 4-pollicaribus 1 J- poll, latis margine subsinuatis. Forma angustifolia : foliis 1- 2- pollicaribus ^ poll, latis lanceolatis integerrimis. Hab. in Arctica America occidentali (Avatscha Bay, Seemann, Herh. Hoolc). En aliam speciem mihi valde obscuram ! Est ita inter S. discolorem et S. cordatam intermedia ut fere eodem jure ad quamvis ut subspecies relata esse possit. Cum priori congruit amentis longis, capsulis pubes- centibus, stylo producto, foliis elongatis acutis basi angustatis ; sed dif- fert, capsulis multo brevius pedicellatis, stigmatibus indivisis, et foliis adultis vix rigidis nee subtus glaucis. Cum S. cordata communia habet stipulas basi latiores, folia subtus venulosa, et capsulas viridius- culas. — Folia 2 - 3-pollicaria : amenta fere eadem longitudiue : cap- sular 2-3 lineas longar. 33. S. MACROCARPA, Nutt. in Herh. Hook. : amentis pedunculatis foliatis erectis ; capsulis breve pedicellatis conicis glaberrimis ; stylo mediocri ; stigmatibus integris ; foliis exstipulatis lanceolatis integris glaberrimis subtus pallidioribus. Hab. [Oregon ? Nuttcdl] Hudson's Bay, Burhe. De hac specie iterum non parum sum incertus cui potissimum proxima censenda. Videtur frutex sat altus, ramis glabris. Folia iis ♦S*. i^hyllcifolice simillima, 1 J- pollicem longa, semiunciam lata, acuta, basi acutata, matura rigidiuscula. Amenta foeminea pedunculo foliis 3-4 rite evolutis instructo infixa, pollicem longa, subramiflora. Cap- sular ut in S. phjlicifolia nostra 2 lin. longa. — A priBcedentibus longe differt amentis pedunculatis et foliatis : cum sequentibus non multa communia, nisi cum S. glaucce. formis denudatis.* 34. S. CORDATA, Maid. ; Hooh. I. c. ; J. Carey in Gray, Man. p. 415. In Europee hortis non raro colitur salix harcce pulchra, foliis magnis rigidis basi profunde cordatis, apice cuspidatis margine acute serratis, insignis. Qui banc formam tantum inspexit vix uUam ejus affinitatem cum aS'. hasfata nostra sibi fingeret, licet amenta, et mascula et forminea * In his N. A. Sylva, 1, p. 67, Nuttall gives a character, but no figure, of this species. He calls it the " "Western Tond Willow," and says it is closely related to S. qrisea. He has omitted to mention the habitat. A. G. OP ARTS AND SCIENCES. 65 huic omnino similia conspiciuntur, ceteras autem modificationes, quibus dilata est terra Americana usque ad septentrionem summum, quum videat, facillime intelliget has duas sibi valde esse analogas. Apud nos frutex S. hastatce \a.ria,t nunc orgyalis (in convallibus alpium), nunc (in campis alpium elevatis) repens, prostratus, et bidigitalis : folia sunt latissime ovata, acuminato-cuspidata, acute serrata, stipulis magnis cordatis ornata, nunc autem anguste lanceolata Integra exstipulata. Pi-orsus ea3dem modificationes etiam ex America vidi, quare eas hoc mode serie analoga disponere vellem : — S. hastata, S. cordata. malifoUa, Sm. : foliis cordatis stipulis magnis, = rigida, Muhl. elegans, Hort : foliis ovatis, stipulis mediocris, myrieoides, Muhl. cdpestris, Fries : foliis lanceolatis, stipulis nullis, suharctica. S. cordata autem a S. hastata plerumque capsulis longius pedicellatis dignoscitur: cteterum omnibus partibus simillima^, prassertim foliis rigi- dis subtus dense venulosis (character his speciebus valde singularis). Sub hac specie duas formas attulit Hooker, 1. c. : 1. >S'. halsamifera, Bar- ratt ; 2. aS'. Mackenziana, Barratt. Quantum e speciminibus in herb. Hook, judicare possum S. halsamifera, cujus ramus foliis tectus tantum adest, ad S. acutifoliam, W. pertinet. Ramus cortice ccerulescenti- castaneo obductus. Stipula? lanceolatjB, curvata3 ; gemmce magna^ acuta} ; folia fere 4-pollicaria, semiunciam lata, argute sed remotius- cule serrata, subtus glaucescentia. S. Mackenziana mihi hybrida proles ex S. cordata et ^S". vagante (rostrata) videtur. A priori habet folia glaberrima, viridia, elongato-cuspidata, capsulas basi gibbas glabras, stylum brevem sed evidentem ; a posteriori foliorum forma magnitudi- nem et consistentiam, capsulas longissime pedicellatas. 35. S. ADENOPHYLLA, Hook. FL Bor.-Am. 2, p. 146. Est sine dubio S.hastatce valde affinis : congruit enim cum ea, foliis subcoi'datis duris subtus reticulato-venosis argutissime serratis, stipulis magnis, pedunculis foliatis, capsularum forma et colore ; sed differt abunde, foliis lana sericea densa primo obsitis, serraturis elongatis glanduligeris, capsulisque brevius pedicellatis. 36. S. MTRTILLOIDES, L. S. pcdiccllaris, Pursh ; Hook. I. c. ; J. Carey in Gray, Man. I. c. Jam cl. Tuckerman, in The American Journal of Sciences and Arts, Vol. 45 (1843), p. 37, observavit speciem Americanam cum Lapponica voi,. IV. 9 66 PROCEEDINGS OF THE AMERICAN ACADEMY valde congruere, nee possum quin ei omnino assentiar. Apud nos etiam species est vere elegantissima foliorum forma consistentia et co- lore, nee non capsulis statim ab omnibus dignata. In America adhuc magis luxurians videtur, folia nempe multo majora et ovalia. Ad nostram certissime se habet ut S. rostrata ad S. depressam ! III. NiGRiCANTES, Fries. 37. S. Barclayi, n. sp. : pedunculo foliato ; amentis incurvatis den- sifloris longe pilosis ; capsulis glabris conicis in stylum longum inte- grum attenuatum pi-oductis, pedicello nectarium vix duplo superante ; stigmatibus profunde bipartitis ; foliis rotundato-ovalibus brevissime apiculatis supra parcissime pilosis vel glabriusculis subtus pallidioribus denudatis reticulato venulosis ; stipulis ovatis acutis serratis. Hab. in America boreali-occidentali : Kodiak, Barclay {Herb. Hook.'). Species ob id prtecipue memorabilis, quod S. hastatce, S. nigricanti, et S. glaucce simul sit affinis. Cum aS*. hastata congruit, amentis pe- dunculatis, squamis longe cinereo-pilosis, capsulis obscure viridibus glabris, stylo producto, foliis subtus subglaucescentibus et pulcherrime reticftlato-venulosis, stipulis denique latis serratis ; cum aS*. nigricante habitu, foliis exsiccatione nigricantibus et subtus (sub lente) crebre albo-punctulatis ; cum S. glauca capsulis subsessilibus, pedunculo fo- liis 5-6 cjeteris subsimilibus instructo, et consistentia foliorum. Ob banc variam affinitatem locus in dispositione methodica difficilis de- terminatu. rV. Argente^, Fries. 38. S. SiTCHENSis, Sans, ex Ledeh. Fl. Ross. 3, p. 609. Hab. in America boreali-occidentali : Sitcha, 3fertens ; Oregon, Scolder ; et juxta Columbia River, Hinds. Jam sub S. hrachystachya observavi specimina S. Sitchensis in her- bario Hookeriano S. Scouleriana appellata cum aliis esse confusa. 39. [S. SERICEA, Marsh. ; J. Carey in Gray, Man. I. c. p. 414.] S. grisea, Muhl. ; Willd., etc. Locus in dispositione methodica ambiguus. S. rithrcs nostra? primo subsimilis ob id ad Helices interdum ducta, ab iis amentis baud longe pilosis, staminibus discretis, et capsulis pedicellatis longe diversa. Amenta, pr^cipue mascula, parva subrotunda. Maxime affinis est se- quenti, et per earn S. repenti nostrse. OF ARTS AND SCIENCES. 67 40. S. PETiOLARis, Smith ; J. Carey in Gray, Man. I. c. Amentis et foliis proesertim junioribus S. repenti L. vel potius S. rosmarinifolice L. sat similis. Capsulfe, quae in [*S'. sericea, Marsh, seu] grisea, Mulil. obtusissimjB et stigmatibus sessilibus coronatfe, in hac ovato-rostratce stylo distincto apiculatte : squamaj in priore obtuse vel trimcatse, apice summo atratte ; in hac acutie, su'perne infuscatjc. 41. S. HUMiLis, Marsh. ; J. Carey in Gray, Man. I. c. -S. Muhlen- bergiana, Barratt, et S. conifera, 3Iuhl. sec. Gray, Man. I. c. E S. cinerea et S. Smithiana quasi composita videtur. Ab utraque foliis amentis et capsulis aliena. S. tristis, huic maxime affinis, aperte difFert foliis utrinque opace cinereis, amentis foemineis subglobosis, et capsularum stylo evidenti. , 42. S. TRISTIS, Ait. ; J. Carey in Gray, Man. I. c. — Var. micro- PHYLLA : foliis semiuncialibus ; amentis globosis. Fruticulus parvus. 43. S. KERENS (^. ?), J- Carey in Gray, Man. p. 418. S. fusca (Z.), Hook. I. c. Nullam veram S. repentem ex America in herbariis vidi. S. repens, Bigel. Fl. Bost. {S. fusca, Oakes) quum Tuckerman, 1. c. S. ambiguam Ehrh. habet, ab utraque diversa, ad S. arhusculam referenda. 44. S. GRACILIS, Anders. (= S. rosmarinifolia {L^, Hooh. I. c. p. 148) : amentis lateralibus bracteis paucis deciduis sufFultis ; capsulis ovato-cylindricis obtusis tenuiter griseo-puberulis, pedicello nectarium octies superante ; squamis lingulatis apice infuscatis ; stigmatibus stylo brevissimo duplo longioribus integris ; foliis angusto-linearibus planis integerrimis basi longe angustatis latitudine fere decies longioribus subtus pallidis glabris. Hab. Saskatchawan, Drummond, Richardson. Var. ROSMARiNOiDES : foliis apicem versus serrulatis marginibus acutiusculis subrevolutis. — Hab. Durham County [New Jersey ?], Herb. Hooh. Ab omnibus mihi cognitis speciebus bene dignoscitur foliis et cap- sulis. Quasi hybrida e S. vagante et S. myrtilloide videtur. A S. rosmarinifolia certissime longe recedit capsulis valde pedicellatis, a S. vagante, foliis linearibus elongatis. — Varietas, ut etiam nostra S. gracilis " S. rosmarinifolia, Barratt " inscripta, multo magis ad S. rosmarini-foliam veram accedit. Obstant autem capsulge longissime pedicellataj ! 68 PROCEEDINGS OF THE AMERICAN ACADEMY E. CHAIOELIX, Fries. I. Frigid^, Koch. 45. S. GLAUCA, L. — Hasc species in Lapponia et Silesia innumeris formis {S. lanatce, nigrScanti, myrsinitidi et aliis affinibus) ludens vul- gatissima, et jam in Helvetige alpibus aliena facies {S. sericea. Till. S. albida et S. elceagnoides, &c.) se induens, in arcticis regionibus AmericEe habitu externo vix nostrse similis exstat. Specimina tamen a Seemann in parte occidentali et a Lyall in Disco Island lecta, necnon e Rocky Mountains reportata, cum nostris tamen ita congruunt ut de affinitate non dubitari licet. Folia nunc utrinque molliter villosa et incana, nunc denudata subviridia ; amenta semper foliato-pedunculata ; capsulte brevius pedicellata^. Huic certissime ut forma tan turn associ- anda : — Var. VILLOSA (S. villosa, D. Don'? ; HooJc. I. c. p. 144) : foliis tenui- oribus supra glaucis sparse pilosulis elevato-venosis ; stipulis subper- sistentibus lanceolato-linearibus ; amentis sat longis erectis laxiusculis subramifloris ; capsulis vix demum denudatis ; stylo producto integro ; stigmatibus brevibus cruciatis. — Ha^c forma speciei maxime vegeta videtur. Etiam in Lapponia omnino similis occurrunt specimina {S. glauca appendicidata, Wahl.) ibique nullo crescendi modo a vera S. glauca distingui possuut. * S. DESERTORUM, ^/cAarcfe. / Hook. I. c. p. 151: ament's brevis- simis (semipollicaribus) subglabris densifloris ; capsulis ovatis dense lanatis squamis ovalibus maxima parte obtectis ; stylo bipartito fusco ; foliis anguste oblongis rigidis subtus plus minus albo-tomentosis sub- glaucescentibus costa prominente flava et nervis . elevatis subscrobicu- latis supra sa^pius viridibus lucidis. Insignis sane ut forma in orbe vetere quantum scio nondum obser- vata. Fruticulus videtur 1 - 2-pedalis : rami breves, robusti, foliis et amentis condensatis onusti. SquamjB sat magnae capsulas magnam partem occultantes. Stamina fulvo-aurea. Folia iis S. repentis baud absimilia. Transitus autem ad normalem S. glaucam nonnunquam reperti. Videtur itaque hujus modificatio maxime frigida. Monstrositatem hujus forma3, ex Minto Inlet ab Anderson lectam, vidi, ramis elongatis foliatis apice spicigeris aberrantem. 46. S. ARCTiCA, R. Br. ; Hook. I. c. p. 152. Species sane difficilis determinatu, quasi inter S. Myrsinitidem et OF ARTS AND SCIENCES. 69 glaucam prorsus media, et formas plures ambiguas amplectens. A S. Mijrsinite babet amenta plus minus elongata et spissa, squamas vulgo infuscatas, stylos semper longos, tenues, piceos vel atros, integros ; a S. glauca folia tenuiora virescentia, plus minus hirsuta, capsulas incano puberulas. Ab utraque tamen differt, trunco procumbente (" frutex depressus," i?r.), ramis adscendentibus, foliis sparsis longius petiolatis vere herbaceis vulgo obovatis integris, venis parum elevatis rugulosis, subtus glauco-opacis, atnentis utriusque sexus spurie termi- nalibus, i. e. ramulos breves villosos foliatos terminantibus. Vereor ne sub nominibus variis {S. Myrsinites, S. retusa, S. ovalifolia, S. polaris, etc.) formse varias liujus speciei ab auctoribus sajpe descripta? sint? Notabiliores sunt : Var. SUBPHYLICIFOLIA : foliis angustatis acutatis utrinque glabri- usculis. — Hab. Norton Sound, Seemann. Var. SUBRETICULATA : trunco et ramis longe procumbentibus apice tantum foliiferis ; foliis elongato-obovatis glabriusculis subtus reticulato- venulosis ; amentis (terminalibus) 2 - 3-pollicaribus. — Hab. Hudson Bay, Mackenzie River, etc. Var. SUBPOLARIS : biuncialis ; ramis apice folia 3-5 emittentibus quibus conditur amentum semipoUicare ; squamis atris truncatis emar- ginatis. Hab. in litore maris arctici (Minto Inlet, Anderson). S. obovatam, Pursb (Hook, herb.) a S. aretica distinguere nequeo. 47. S. SUBCORDATA, Anders. = S. cordifolia, Pursh, Hook. I. c. p. 152, p. p. (altera pars ad S. alpestrem pertinet !) : amentis lateralibus pedunculatis foliatis ; capsulis sericeis ovatis sessilibus ; stylo bifido ; stigmatibus partitis divaricatis ; foliis rotundatis seu ovalibus basi cor- datis vel subangustatis utrinque glabris subtus pallidis viridibus venoso- reticulatis herbaceis stipulatis. Hab. " Rocky Mountains," Dnmimond. Frutex parvus, ramis erectiusculis nitidis castaneis, gemmis magnis. Folia adulta scepe biuncialia, longe petiolata (petiolo flavo lucido), costa et nervis subtus prominentibus reticulata, margine obsolete glanduloso- serrulata : stipulas cordata3. Amenta semipollicaria, crassiuscula. Quoad habitum quasi hybrida a S. cordata (cujus folia habet, sed breviora) et S. glauca (amenta !). 48. S. ALPESTRis, Anders. : amentis vel pseudo-terminalibus pedun- culatis foliatis ; capsulis subsessilibus ovatis albo-tomentosis vel subgla- bratis ; nectario vix basin capsulse superante ; stylo producto sjepe ad 70 PKOCEEDINGS OF THE AMERICAN ACADEMY medium fisso ; stigmatibus bifidis, laciniis revolutis ; foliis oblongis vel subovalibus vel obovatis ut plurimum villosis demum glabratis. — Hoc nomine formas varias comprebendo, quce, ad unam speciem certissime referendas, in variis terris suis nominibus appellatai fuerunt. Sunt : — a. Pyrenaica. S. Pyrenaica, Gouan! In alpibus Pyren^is. /3. Helvetica. In Helvetia. y. NoRVEGiCA. S. Pyrenaica var. Norvegica, Fries. In Scandi- navite alpibus (Norvegia et Lapponia), b. Americana. S. cordifolia {Pursh), Hook. I. c. p. 152, pro parte. In arctica America. Ab omnibus S. glaucce formis, etiam Pyrenseis, difFert trunco subter- raneo, ramis subprostratis vel adscendentibus, foliis brevioribus apice obliquo, rigidioribus (ut S. Myrsinitidem eo respectu fere simulat), sub- tus venis elevatis rugulosis, demum glabratis sed margine fere semper ciliatis, amentis laxioi'ibus omnino coetaneis foliis pluribus sufFultis, et capsulis distinctius pedicellatis. lisdem notis a S. suhcordata rece- dit : a S. rhamnifolia et S. ovalifolia foliis utrinque acutis velutinis vel saltem ciliatis, amentis longis et foliatis, capsulis plerumque villosis. 49. S. Myrsinites (X.), Hook. I. c. p. 151. — Quum rite extricare nequeo quam speciem iU. Hooker, 1. c. potissimum intellecuit, specimina qute in herbario ejus asservantur et mihi valde dubia restant, descri- benda puto : * S. Pseudo-myrsinites, Anders. : amentis lateralibus foliis paucis bracteatis erectis elongatis densifloris ; capsulis pedicellatis conicis gla- berrimis testaceis ; stylo distincto ; stigmatibus brevibus ; pedicello squamam duplo et nectarium quadruplo superante ; foliis oblongo-lin- gulatis breve petiolatis tenuiter membranaceis utrinque glaberrimis, subtus subpallidioribus costa et venis prominulis nervosis crebre et depresse serrulatis. Hab. " Grand Rapids of the Saskatchawan " et " Rocky Mountains." Frutex parvus, 1 - 3-pedalis, ramis divaricatis, foliis 1^-pollicaribus vix semipoUicem latis (habitu fere S. Myrsmitidis nostra), sed minus coriaceis nee ita venulosis et argute serratis). Amenta (fere ut in S. phylicifolia) bipollicaria. Capsulte testaceze. # S. CURTIFLORA, Anders. : amentis breve pedunculatis foliis 3-4 minutis suffultis erectis brevibus ovatis glaberrimis viridulis ; stylo distincto ; stigmatibus brevissimis conniventibus ; pedicello squamam OF ARTS AND SCIENCES. 71. atram apice crispato-hirsutam triplo et nectarium parvum quadruplo superante ; foliis anguste ovalibus utrinque glabris exsiccatione nigri- cantibus margine crenulatis. Hab. " Fort Franklin, Mackenzie Eiver," Richardson. A vera & Myrsinitide longe distat, habitu potius S. (cordatce) has- tatce vel immo S. nigricanti magis affinis. Fruticulus parvus : rami vix pedales : folia semipollicaria 2 lin. lata, subtus punctis albis cre- berrimis subpallidiora. Amenta semipollicaria : rbacbis puberula : capsulfE minutaj, viridulcE. 50. S. ARBUSCULA, Z. ? S. Mjrsinites {L.), Hook. I. c. p. 151, pro parte. Formoe quas in " Prince Albert's Land (H. M. S. Investigator) " et " Rae River" {Dr. Rae) in herb. Hook, vidi a specie nostra alpina difFerunt, foliis adhuc angustioribus, squamis amenti apice fuscis, cap- sulis subtenuioribus, et stigmatibus subsessilibus. Non possum etiam quin ad banc speciem illam referam formam quam cl. Tuckerman (in Amer. Jour. Science, 45, p. 35) ut iS. ambiguam, Ehrh. descripsit (= S. repens, herb. Oakes). In Europa ill. Wimmer banc speciem e iS. repente et S. aurita (qua3 forsan in America non invent* !) prolem hybridam habet. Amentis pedunculatis foliatis, squamis capsulas basi tegentibus flavidis, stylo producto, foliis lingulatis integerrimis, et habitu toto ab omni S. ambigua dignoscitur. Ab S. arbuscida tamen recedit foHis pilis longis adpressis subtus dense sericeis et integerrimis. Hue etiam referenda : Var. Labradorica : foliis poUicaribus 3 lin. latis costa lata flaves- cente subtus notatis margine ssepe remote serratis subtus parcissime pilosis. — Labrador. 51. S. RHAMNiPOLiA {Pall. ?), Hook. 4" Am. Bot. Beech. Voy.p. 117, t. 26; Ledeb. Fl. Boss. 3, p. 612. S. Uva-Ursi {Pursh), Hook. I. c. p. 152, pro parte ? S. Myrsinites, Cham. ^ Schlecht. in Linncea, 6, p. 540 (ad sinum Sti Laurentii). S. myrtilloides, formse 1, 2, Cham. I. c. p. 539. — Hue forsan etiam pertinet S. Unalaschensis, Cham. 1. c. p. 541, quae tamen nostrte S. hastato-herbacece non dissimilis (sed folia Integra !), S. rhamnifoliam et S. ovalifoliam quodammodo connectit. Nomen S. XJva- Ursi, Pursh, quod in herbario Hook, a Barratt huic speciei etiam impositum est, plane rejiciendum : 1. quod Pursh ipse specimina culta et nunc valde incerta descripsit ; 2. quod speciebus pluribus aliis ex "White Mountains of New Hampshii'e" et Labrador 72 PROCEEDINGS OF THE AMERICAN ACADEMY valde recedentibus, fere eodem jure (si mancam diagnosin Pursliii respicias) datum fuit. — Cum speciminibus S. rliamnifolice a, Hooker, 1. c. primum descriptis et depictis nostra non male congruunt ; sed rece- dunt nonnihil foliis vix spathulato-obovatis margine subintegris, capsulis crassioribus et brevius pedicellatis. Sunt quasi inter Committee." Joseph Winlock, ) On motion of Professor I^'elton, the resolutions were adopt- ed unanimously ; and the subject was again referred to a committee, consisting of Professor Joseph Lovering, Profes- sor Henry L. Eustis, Professor Joseph "Winlock, Thomas G. Gary, Esq., B. A. Gould, Esq., Professor Theophilus Parsons, and Edward Wigglesworth, Esq. Professor H. L. Eustis gave an account of Barlow's new method of calculating the strength of girders. Professor C. C. Felton exhibited a collection of rare Roman coins which he had recently received. Professor E. N. Horsford exhibited the Tyrian dye, or mu- rexide in a crystalline form, and explained the new mode of obtaining it. On motion of Professor Lovering, one hundred dollars was added to the appropriation for publication during the current year, to replace a sum which had beeil paid out from that appropriation by a vote of the Academy at the stated meet- ing in August last. The following gentlemen were elected Fellows of the Academy : — Dr. Luther V. Bell, of Charlestown, in Class II. Section 4. OF ARTS AND SCIENCES. 107 Rev. Dr. Chandler Robbins, of Boston, in Class III. Sec- tion 2. Professor Benjamin Peirce, of Cambridge, in Class I. Sec- tion 1. Four Iiiundred. and Afty-seveutli meeting. December 14, 1858. — Monthly Meeting. The Academy met at the house of Chief Justice Shaw. The President in the chair. The Corresponding Secretary read letters from the Rev. Chandler Robbins and Dr. Luther V. Bell, accepting their election as Fellows of the Academy. Also from the K. L, C. Akademie der Naturforscher, Bres- lau, November 20th, 1857, and January 20th, 1858 ; Acade- mic Royale des Sciences a Amsterdam, December 10th, 1857 ; K. Siichs. Bergakademie, Freiburg, December 13th, 1857 ; Royal Geographical Society, London, December 30th, 1857 ; Observatoire Physique Centrale, St. Petersburg, June 1st, 1858 ; Royal Society of Sciences of Upsal, January 8th, 1858 ; K. Siichs. Gesellschaft der Wissenschaften, January 6th, 1858 ; Naturhistorischer Verein der Preussischen Rheinlande und Westphalens, January 11th, 1858 ; Societe Imperiale des Naturalistes de Moscow, March 10th, 1858 ; Academic Royale des Sciences, Turin, May 15th, 1858 ; and the Royal Society of Sciences, Gottingen, May 26th, 1858, acknowledging the receipt of the Academy's publications; — from the Gesell- schaft zur Beforderung der Naturwissenschaften zu Freiburg im Breisgau, June 25th, 1858, acknowledging the same, and presenting its own publications; — from the Oberhessische Gesellschaft fiir Natur- und Heilkunde, April 6th, 1858, and the Societe Imperiale d' Agriculture, &c., August 8th, 1858, presenting their publications; — from the Societe d' Agricul- ture, Sciences, et Arts de la Sarthe, March 30th, 1858, pre- senting various publications and asking an exchange; — and from M. de Haar, of Holland, presenting a mathematical memoir, and asking a critical opinion of its merits. 108 PROCEEDINGS OF THE AMERICAN ACADEMY On motion of Professor D. Treadwell, the memoir of M. de Haar was referred to a committee, consisting of Profes- sor B. Peirce, Professor Joseph Winlock, and Rev. Thomas Hill. Professor Agassiz addressed the Academy on the subject of the Classification of Fishes. He spoke of the unsatisfac- tory character of the systems of different naturalists, growing out of a want of some common fundamental feature, corre- sponding to their greater or less complexity of structure, which should serve as a basis. In regarding the whole series of Vertebrata, Professor Agassiz has been led to consider the structure of the mouth as related to the facial bones in their greater or less development and complexity, as furnishing a hint for the classification of this department of the animal kingdom. Fishes differ widely in the structure of the mouth, and by a careful analysis of this structure he had been led to a general deduction, that those fishes in which there is the fullest development of the facial bones should be placed at the head of the series, as coming nearest to the highest Ver- tebrata, while those at the opposite extreme should be placed last. Arranged by this test, the Ganoids would hold the first rank, and the Myzontes the last ; and so with the inter- mediate families. And he thought that his view would be sustained by a fuller investigation of all the anatomical char- acters of the class ; the greater or less complication and de- velopment of their structure in general being found to con- form to the structure of the face and mouth. Professor Agassiz illustrated his view by a comparison of the anatom- ical structure of these parts, as well as other parts, in the Siluroids, the Loricarians, Sturgeons, Salmon, Sharks, &c. Professor Peirce made a communication on the law of the formation of the tails of comets, explaining his own special views on the subject. He also presented, in behalf of Pro- fessor Winlock, a comparison between the American and British Ephemeris of the Moon for 1856, showing much greater accuracy in the American Ephemeris. I OF ARTS AND SCIENCES. 109 Professor Peirce also presented the results of the working of the Calculating Machine at the Dudley Observatory, for the Nautical Almanac. The computations had been made with reference to the tables of Mars. He also exhibited the lead plates stamped by the machine, and explained its work- ing. Dr. H. R. Storer read a paper, tending to show the rapid diminution of the rate of increase in the number of births in Europe and America, especially in Massachusetts. It was remarked, that certain generally admitted facts had hitherto been a problem to political economists. By a comparison of extensive statistical tables Dr. Storer indicated the direct de- pendence of this decrease, apparently, upon criminal causes. The question would be elsewhere more fully and thoroughly discussed. It was evident from a consideration of the data, that the state of the case as respects Massachusetts was not exceptional, but was merely here brought to light by means of our more careful registration. Professor Parsons stated that a memorial would be pre- sented to the Legislature of Massachusetts during the com- ing session, asking for aid in publishing a new edition of the late Dr. Harris's valuable work on Insects injurious to Vegetation, and that it is desirable that the Academy should add its influence to that of the Societies with which it origi- nated. On his motion it was voted, that the President be authorized to sign the memorial in behalf of the Academy. Professor Gray communicated three papers upon the Bot- any of the United States North Pacific Exploring Expe- dition under Captain John Rodgers (succeeding Captain Ringgold), by permission of the commander of the Expe- dition, viz. : — 1. An Account of the new Phaenogamous Plants collected by Charles Wright, the Botanist of the Expedition ; with a notice of the Vegetation of Japan in its relations to that of the Northern Temperate Zone generally. [Published in the Memoirs of the Academy.] 110 PROCEEDINGS OP THE AMERICAN ACADEMY 2. Characters of some New Filices^ from Japan and Adjacent Regions, collected hy Charles Wright in the North Pacific Exploring Expedition under Captain John Rodgers. Com- municated by permission of the Commander of the Ex- pedition, by Daniel C. Eaton. 1. Adiantuji monociilamys : gracile ; stipite rhachique ebeneo nitido ; fronde ovato-lanceolata tripinnata ; pinnulis chartaceis glaber- rimis longe pedicellatis anguste cuneatis obcordatis indivisis siccitate striatis margine revolutis apice acute serratis in sinu monosoriferis ; involucre orbiculari submembranaceo. Hill-sides near Simoda, Japan. 2. Athyrium cystopteroides : caudice repente tenui vix pale- aceo ; frondibus erectis stipiti gracili impositis membranaceis lance- olatis pinnatis ; pinnis ovato-lanceolatis acutis pinnatipartitis, segmentis (basilai'ibus nunc liberis) ovatis obtusis dentatis crenatisve supra gla- bris subtus parce glandulosis, venis utrinque pubescentibus pinnatis, venulis simplicibus vel furcatis ; indusio hispido margine glandulifero, nunc oblongo lateri adfixo, nunc reniformi-orbiculari venultB insi- dente. Var. /5. elatius ; pinnis lanceolatis pinnatisectis, segmentis oblongis obtusis integris ; venulis simplicibus ; indusio minus hispido. Ousima, Katonasima, and Anakerima, Loo Choo Islands. 3. Lastrea lacera (Polypodium \a.cQY\xm,Thunh. Fl. Jap. p. 337 !) : frondibus e caudice brevi crasso pluribus stipite breviori valde paleaceo insidentibus subcoriaceis glabris subtus albicantibus oblongis acutis bipinnatis ; pinnis late-lanceolatis acuminatis pinnatis vel pinnatifidis, intermediis longioribus, superioribus contractis fructiferis ; segmentis oblongis vel falcatis acutis serratis, basilaribus nunc utrinque subauri- culatis ; soris confertis demum conflueutibus ; indusio orbiculari usque ad medium fisso, sinu clauso lateribus inflexis. Simoda, Jajmn. 4. WooDSiA (Hymenocystis) polystichoides : casspitosum, gla- briusculum ; stipite brevi sparsim paleaceo ; frondibus erectis elongato- lanceolatis pinnatis ; pinnis subcoriaceis confertis lineari-oblongis sub- falcatis obtusis auricula majuscula e basi superior! semi-liastatis fere integerrimis, inferioribus sensim rainoribus deflexis ; venis pinnatis, venulis furcatis ; soris apice venulce superioris impositis prope mar- OF ARTS AND SCIENCES. Ill ginem seriatis ; indusio subgloboso cystiformi 4 - 6-fido, lobis imbrica- tis ; receptaculo oblongo. On hill-sides near Hakodadi, Japan. 5, Trichomanes latemarginale : pusillum ; caudice repente fili- formi tomentoso ; frondibus subsessilibus 3-6 lineis longis pellucidis glabris nunc palmato 3 - G-partitis nunc pinnatifidis, laciniis lineari- oblongis integerrimis obtusis nervilla intra duplicem seriem cellularum marginalium cinctis ; involucre omnino immerso infundibuliformi bre- viter bilabiate ; receptaculo longe exserto ; areolatione hexagonal! con- spicua fragmentis venularura conspersa. Creeping on rocks in mountain ravines, near Hong Kong, China. 3. Characters of Neiv Fungi, collected in the Worth Pacific Explo7-ing Expedition hy Chai'les Wright. (Communicated by request of Captain Rodgers.) By Rev. M. J. Berkeley, M. A., F. L. S., &c,, and Rev. M. A. Curtis, Associate Fellow of the Academy. 1. Agaricus (Lepiota) auctus, Berk. & Curt.: pileo hemisphae- rico carnoso albo in squamulas granulosas fuscas rupto, margine e velo appendiculato ; stipite elongato ajquali ; lamellis latiusculis remotis. On sides of hills, Hong Kong, Aug. 1854. 2. A. (Lepiota) depravatus, Berk. & Curt. : pileo convexo stipiteque suba^quali furfuraceo-verrucosis ex albo brunneis ; lamellis ventricosis postice emarginatis adnexis. In woods among leaves, Bonin Islands. — Has some resemblance to A. acute-sqtcaniosus, Weinm. 3. A. (Lepiota) hemisoodes, Berk. & Curt. : albus, pileo cam- panulato epidermide continua esquamulosa ; stipite basi subbulb'oso gracili; lamellis angustis remotis postice distinctis. On decayed wood, Bonin Islands. — Resembles A. continuus of Ceylon, but is smaller and with the gills not reticulated behind. 4. A. (Armillaria) ttmpaniticus, Berk. & Curt. : ca^spitosus ; pileo convexo rufo-brunneo ; stipite deorsum attenuate sursum ven- tricoso albo-brunneo ; annulo membranaceo ; lamellis concoloribus an- gustis. On dead wood, Bonin Islands. — Allied to A. mucidus. 5. A. (Tricholoma) periporphyrus, Berk. & Curt. : obscure 112 PROCEEDINGS OF THE AMERICAN ACADEMY purpureas, csespitosus, pusillus ; pileo e convexo piano glabrato ; stipite gracili ; lamellis crassis adnatis. Shady hill-sides, Bonin Islands. — Allied to A. onychinus. 6. A. (Colltbia) talpinus, Berk. & Curt.: flavidus ; pileo tenui stipiteque basi strigoso-radiato subtiliter velutinis ; lamellis angustis- simis adnexis. On decayed wood, Bonin Islands. — Allied to A. velutipes. 7. A. (Collybia) palmicola. Berk. & Curt. : pusillus ; pileo convexo glabro aurantiaco margine inflexo ; stipite subconcolore glabro basi radiato-strigoso ; lamellis adnexis crassiusculis paliidioribus. On dead Palms, &c., Bonin Islands. 8. A. (Colltbia) efflorescens, Berk. & Curt. : flavidus ; pileo planiusculo stipiteque sursum dilatato subtiliter pulverulento-velutinis ; lamellis liberis modice latis venoso-connexis. On decayed wood, Bonin Islands. — Allied to A. velutipes, but far less velvety. We believe it is Marasmius rufus of Montague. 9. A. (Collybia) poigenl's. Berk. & Curt.: fuscus; pileo hemi- sphferico striato glabro ; stipite insititio deorsum velutino ; lamellis ad- nexis subdistantibus. On dead grass. Hong Kong. — Has the habit of A. stipitarius. 10. A. (Collybia) adianticeps. Berk. & Curt.: flavidus; pileo demum depresso striato, margine crenato appendiculato ; stipite carti- lagineo isquali ; lamellis angustis adnexis. Hill-sides, Hakodadi, Japan. — The pileus of this pretty species looks very much like the frond of an Adiantum, from its long strise, and crenate, appendiculate margin. 11. A. (Mycexa) Californiensis, Berk. & Curt.: pileo ex conico breviter campanulato stipiteque gracili rufis ; lamellis liberis albis rubro-marginatis. On Oak leaves, Mare Island, California. — Differs from A. auran- tio-marginatus in the nature of the gills, and is a more graceful species. 12. A. (Mycena) alphitophyllus. Berk. & Curt. : pileo leviter depresso molli succulento viscoso albo ; stipite brevi rufescente ; la- mellis latiusculis distantibus adnexi-decurrentibus pulverulentis ; sporis mafirnis globosis. On decayed logs, Bonin Islands. — This may perhaps be the type of a distinct genus. The spores are very peculiar, as also the manner in which the gills separate below, reminding one of Paxillus. OP ARTS AND SCIENCES. 113 13. A. (Mycena) dicranophyllus, Berk. & Curt. : pileo sub- depresso hyalino sordide albo ; stipite insititio glabro sursum dilatato ; lamellis purpurascenti-albis furcatis ramosisque distantibus subtiliter pulverulentis ; sporis minoribus globosis. On dead sticks, Bonin Islands. — Closely resembles the preceding ; but differs in the small spores, as well as in other particulars. 14. A. (Mycena) leucoconis, Berk. & Curt. : pileo umbrino leviter depresso viscoso ; stipite robustiore deorsum incrassato medio tenuiore albo; lamellis latiusculis distantibus adnatis albis demum secedentibus albo-pulverulentis. On wood, Bonin Islands. — Distinguished from the following by its thicker pileus and white spores. 15. A. (Mycena) rhodoconis. Berk. & Curt. : albus ; pileo levi- ter depresso tenuissimo viscoso ; stipite sursum incrassato basi dilatato ; lamellis latiusculis distantibus adnatis roseo-pulverulentis. On decayed wood, Bonin Islands. 16. A. (Mycena) cladophyllus. Berk. & Curt. : pileo hemi- sphferico membranaceo delicato striato albo ; stipite gracili rufo ; lamellis angustis distantibus ramosis. On dead wood. Hong Kong. — Resembles a Marasmius. 17. A. (Mycena) hemileucus. Berk. & Curt. : pileo ex conico- campanulato expanso umbrino ; stipite stricto lamellisque adnexis dis- tantibus albis. On decayed wood, Bonin Islands. 18. A. (Mycena) chjetodes, Berk. & Curt. : pileo hemisph^rico ex albo griseo striato ; stipite elongate basi pilis longis strigoso ; lamellis paucis subangustis adnexis. Amongst leaves, &c., under trees. Hong Kong. 19. A. (Mycena) chlorophos, Berk. & Curt.: ex albo viridi- tinctus, lumen viride emittens ; pileo depresso striato viscidulo ; stipite pulverulento sursum dilatato e basi orbiculari oriundo ; lamellis subdis- tantibus ventricosis leviter decurrentibus. Dead logs, Bonin Islands. — Highly luminous at night. 20. A. (Mycena) cyanophos, Berk. & Curt. : albus, lumen cseru- leum spargens ; pileo hemispha^rico campanulato viscidulo ; stipite pul- verulento sursum dilatato e basi orbiculari delicata pulverulento-tomen- tosa oriundo ; lamellis liberis. . VOL. IV. 15 114 PROCEEDINGS OF THE AMERICAN ACADEMY On decayed wood, Bonin Islands. — Closely allied to the last, but differing in its free gills, &c. 21. A. (Mycena) pittrodes, Berk. & Curt. : albus, tenerrimus ; pilco campanulato furfuraceo ; stipite gracili flocculento e basi orbicu- lari estriata oriundo. On decayed wood, Bonin Islands. — Allied to A. tenerrimus, Berk. 22. A. (Omphalia) tjsta. Berk. & Curt. : rufus ; pileo tenui in- fundibuliformi glabro ; stipite recto sursum incrassato basi orbiculari strigosa affixo ; lamellis angustis decurrentibus. On dead twigs, Bonin Islands. — Somewhat resemhling A. pyxidatus. 23. A. (Omphalia) ruficeps, Berk. & Curt. : rufus ; pileo de- presso membranaceo ; stipite glabro ; lamellis angustis distantibus decurrentibus venoso-connexis. On dead wood, Bonin Islands. 24. A. (Omphalia) Ephippicm, Berk. & Curt. : purpureo-fuscus ; pileo umbilicato subsquamuloso ; stipite sursum dilatato nigro-punctato ; lamellis ci'assiusculis decurrentibus. On the ground, Bonin Islands. — Allied to A. ^imbelliferus. The helvelloid form of the pileus when dry is peculiar. 25. A. (Omphalia) OusuiiE, Berk. & Curt, : pileo pallide fusco striate depresso glutinoso ; stipite gracili ; lamellis distantibus decur- rentibus tenuibus albis. In the crevices of bark of trees, Ousima, north of the Loo Choo Islands. — Allied to A. iimheUiferus and stellatus, but distinguished from the former by its thin gills and gelatinous pileus ; and from A. stellatus by the latter character and by the base not being stellate. 2G. A. (Omphalia) Behringensis, Berk. & Curt.: pileo deiiresso cupulajformi glabro striato luteo-albo ; stipite sursum incrassato ; la- mellis adnato-decurrentibus latiusculis distantibus albis. Arakamtchetchene Island, Behring's Straits. — Approaches Cantha- rellus Behringensis, but the gills are not forked, &c. 27. A. (Omphalia) porpiiyromiges. Berk. & Curt. : pallide pur- pureus ; pileo umbilicato tenui ; stipite sursum incrassato basi discoidea aifixo ; lamellis distantibus angustis decurrentibus. On decayed wood, Bonin Islands. 28. A. (Omphalia) plumbarius, Berk. & Curt.: piloo convexo centro depresso griseo-plumbeo ; stipite recto basi tioccis brevibus affixo ; lamellis distantibus decurrentibus. OF ARTS AND SCIENCES. 115 On rotten sticks, in the Bonin Islands. 29. A. (Pleurotus) connatus, Berk. & Curt. : pallide luteus ; pileis excentricis tenuibus nitentibus glabris ; stipitibus fibrillosis con- natis ; lamellis decurrentibus ; annulo deflexo. Arakamtehetchene Island, Behring's Straits ; on decayed wood. — This has the habit and colors of" A. pudicus ; but the gills are decur- reut, and the spoi*es white. 30. A. (Pleurotus) Prometheus, Berk. & Curt. : albus, phos- phorous ; pileo tenui flabelliformi minutissime virgato-maculato in stipi- tem brevissimum postice attenuate ; lamellis crebris angustis. On dead wood, Hong Kong. — The most delicate of the phospho- rescent Agarics. 31. A. (Pleurotus) alopecius. Berk. & Curt.: ex albo subful- vus ; pileo excentrico subreniformi vel orbiculari glabro ; stipite brevi sursum dilatato ; lamellis ventricosis confertis adnexis. On decayed logs, Bonin Islands. — A delicate and curious species. 32. A. (Pleurotus) leiophtllus, Berk. «fe Curt. : albidus ; pileo reniformi tenui ; stipite brevissimo ; lamellis angustis crassiusculis sub- distantibus adnatis ; interstitiis lasvibus. On dead sticks, Bonin Islands. 33. A. (Pleurotus) lividulus. Berk. & Curt. : resupinatus ; pileo reniformi seu flabellato demum lobato purpurascenti-hvido pul- verulento-hispidulo glabrescente ; stipite nullo ; lamellis pileo concolo- ribus demum albis. On dead twigs, Bonin Islands. — Allied to A. spicuUferus, Berk. 34. A. (Pleurotus) squamula, Berk. &Curt. : resupinatus, villo albo afhxus, margine libero ; strato superiore gelatinoso ; pileo subor- biculari glabrescente lamellisque crassiusculis luteis ; stipite nullo. On decayed, wood, Bonin Islands. — Allied to A. spicuUferus, Berk. ; but the pileus is half attached, the stem wanting, &c. 35. A. (Volvaria) micro spilus, Berk. & Curt. : pileo hemispha^- rico tenuissimo badio sericeo particulis obscurioribus virgato; stipite tenui e volva badia adnata emergente ; lamellis latiusculis liberis. On decayed wood, Bonin Islands. — An exquisite little species. 36. A. (Pluteus) arenulosus, Berk. «fe Curt. : pileo convexo candido centi'o difFracto verruculoso margine striato ; stipite tenui flexuoso brevi ; lamellis ventricosis liberis remotis. On dead wood, Bonin Islands. — Analogous to A. cristatiis. 116 PROCEEDINGS OF THE AMERICAN ACADEMY 37. A. (Leptonia) virescens, Berk. & Curt. : totus pallide cya- neus, siccitate virescens ; pileo centre depresso ; lamellis latiusculis distantibus adnexis. On the ground, Bonin Islands. — A very curious species. The gills stain the drying-paper with a yellow-olive tint. 38. A. (Eccilia) glauci-brunneus, Berk. & Curt. : pileo infun- dibuliformi tenui striate umbrino ; stipite lamellisque decurx-entibus glauco-albis. Mountain-sides, Hong Kong. 39. A. (Hebeloma) venifer, Berk. & Curt. : pileo tenui striato glabro, margine reflexo albido ; stipite jequali brunneolo ; lamellis angustis liberis umbrinis ; interstitiis eximie venosis. Damp ground, Ai'akamtchetchene Island, Behring's Straits. — A beautiful species, allied to A. rimosus, but distinguished by its smooth pileus, reticulated interstices, reflected margin, &c. 40. A. (Flammula) holocirrhus. Berk. & Curt.: minor, fulvus ; pileo sub lente floccis squamulisve innatis subtiliter notato quandoque glabro ; stipite tenui fibrilloso-striato ; lamellis flavo-punctatis decur- rentibus ; sporis minutissime echinulatis. On dead wood, Bonin Islands. — Allied to A. pe7ietrans, hut smaller. 41. A. (Naucoria) stellulatus, Berk. & Curt. : pileo convexo tenui badio, sicco rufescente, verrucis pyramidatis basi sericeo-stellatis, centro aspero, margine squamuloso ; lamellis adnexis ferrugineis. On decayed wood, Japan. — Allied to A. conspersus. 42. A. (Naucoria) Nicotiana, Berk. & Curt.: pileo convexo diffracto-squamoso fusco ; squamis squarrulosis, margine appendicu- lato ; stipite sursum attenuate fibrilloso-squamoso subcieruleo ; lamellis ventricosis arcuato-adnexis. Damp hill-sides, Behring's Straits. — Allied to A. conspersus and escharoides. 43. A. (Galera) Japonicus, Berk. & Curt.: magnus ; pileo co- nico-campanulato tenui spadiceo ; stipite elato gracili fibrilloso basi incrassato ; lamellis adscendentibus peroxydatis. On dead wood, Hakodadi, Japan. — Allied to A. Apalus. 44. A. (Galera) liratus. Berk. & Curt. : pusillus ; pileo umbili- cato sulcato atomato rufo ; stipite brevi ; lamellis paucis latis adnatis. On the bark of Oak-trees, Mare Island, San Francisco Bay, Cahfor- nia. — Resembles a Marasmius, with the habit of A. corticola. OF AKTS AND SCIENCES. 117 45. A. (Crepidotus) palmularis, Berk. & Curt.: pileo reniformi subrufo striate marginem versus transversim ruguloso; lamellis latis subconcoloribus. On dead wood, Bonin Islands. 46. A. (Crepidotus) uber, Berk. & Curt.: pileo reniformi tenui ex albo luteo-fusco viscidulo; lamellis confertis ferruginosis e sporis luteis. In shady woods, Bonin Islands. — Allied to A. mollis and malacJiius. 47. A. (Crepidotus) leucochrysos. Berk. & Curt.: luteus; pileo subflabelliformi vel reniformi subtiliter tomentoso glabrescente ; stipite nullo ; lamellis distantibus. On decayed wood, Bonin Islands. 48. A. (Crepidotus) sctmnodes, Berk. & Curt. : pileo dimidiate tenui ex albo leonino subtiliter villoso ; villis innatis liberisque floccis affixis ; lamellis confertis. On dead Palm-leaves, Bonin Islands. — Closely allied to the last. 49. A. (Crepidotus) haematites, Berk. & Curt.: atro-sanguine- us ; pileo reniformi postice affixo glabro ; lamellis ventricosis latius- culis. On dead wood, Hong Kong. — Has somewhat the habit of Panus. 50. A. (Crepidotus) Cacao, Berk. & Curt.: bruuneus ; pileo suborbiculari glabro siccitate rugoso margine intlexo; lamellis latius- culis. On dead wood, Bonin Islands. 51. A. (Crepidotus) flavo-livens. Berk. & Curt.: pileo flabel- liformi flavido pulverulento ; stipite nullo ; lamellis angustis purpureo- albis. On dead wood, Bonin Islands. 52. A. (Psalliota) primipilus, Berk. & Curt. : pileo amplissimo fortiter umbonato brunneolo squamis minutis sericeis brunneis ornato ; stipite subbulboso ; lamellis latis argillaceis. Shady hill-sides, Bonin Islands. — Eesembles some variety of A. procerus, but has colored spores ; also like A. cretaceus, but with larger and diflferently-shaped spores. 53. A. (Psalliota) asotus. Berk. & Curt. : fasciculatus ; pileo convexo fusco-purpureo ; stipite elato solido concolore ; mycelio ex- panse albo ; lamellis latis adnatis. Amongst Rice straw and rubbish, Hong Kong. — Allied to A. semi- globatus, but far larger. 118 PKOCEEDINGS OF THE AMERICAN ACADEMY 54. A. (Psalliota) porphyrophyllus, Berk. & Curt. : pilep albo centre umbouato luteo viscoso nitido ; stipite deorsum incrassato albo ; laraellis ventricosis adnexis purpureis. On the ground, Japan. — Closely allied to A. semiglobatus. 55. A. (Psathyra) fusco-niveus, Berk. & Curt. : pileo campan- ulato tenui pallide fusco areolis minutis veil reliquiis distincto ; stipite niveo glabro ; lamellis adnexis phfeotis. On hill-sides, Bonin Islands. — Resembles A. spadiceo-griseus. 56. HiATULA LUTEOLA, Berk. & Curt. : pallide flava ; pileo hemi- sphiErico striate hyalino ; stipite glabro sursum incrassato ; lamellis liberis anirustis subdistantibus remotis. On dead wood, Loo Choo Islands. 57. H. NivosA, Berk. & Curt. : nivea ; pileo breviter campanulato demum expanso tenerrimo ; stipite glabro ; lamellis postice attenuatis approximatis subdistantibus. Side of mountains, Bonin Islands. — Approaches Mycena. 58. H. BoNiNENSis, Berk. & Curt. : pileo tenerrimo brunneolo striato ; stipite delicato hyalino ; lamellis remotis distantibus ventri- cosis albis. Side of logs, Bonin Islands. — Also has the habit of Mycena. 59. H. GRACILIS, Berk. & Curt. : albus ; pileo hemisphterico striato glabro ; stipite gracili hyalino pulverulento-tomentoso ; lamellis ventri- cosis remotis. Decayed wood, Bonin Islands. — Closely allied to the last. 60. CopRiNUS suBGLOBATUs, Berk. & Curt. : pileo subgloboso pal- lide fusco indumento crasso subglauco vestito ; stipite albo ; lamellis latis liberis ex albo obscure purpurascentibus. On banks, California. — Allied to C. atramentarius. 61. C. MODESTUS, Berk. & Curt. : pileo tenerrimo glabro sulcato- fisso pallide purpureo ; stipite gracili ; lamellis linearibus liberis phse- otis. On decayed wood, Bonin Islands. — Resembles G. hemerobius. 62. BoLBiTius Oryz^, Berk. & Curt. : pileo campanulato obtuso viscido stipiteque valido albis ; lamellis adnexis ex albo gilvo-purpuras- centibus. On decaying Rice chaff, Japan. 63. CoRTiNARius (Inoloma) Wrightit, Berk. & Curt.: pileo convexo umbonato innato tomentoso fusco ; stipite subaequali fibrilloso OF ARTS AND SCIENCES. 119 basi nitente-fulvo ; lamellis crassiusculis distantibus postice rotundato- emarginatis. Japan. 64 Hygrophorus pictus, Berk. & Curt, : pileo umbilicato de- pressove striate ; stipite sursum incrassato glabro ; lamellis distantibus subangustis ventricosis decurrentibus. On the ground, Hong Kong. 65. Lactarius LiviDATUS, Berk. & Curt.: pileo leviter depresso stipiteque sursum incrassato rufis ; lamellis angustis subconfertis e sor- dide helvolis lividis. On hills, Japan. — Has somewhat the habit of L. volemus. 66. Cantharellus Behringensis, Berk. & Curt. : pileo piano tomentoso adpresse-squamuloso griseo-albo ; stipite sursum incrassato tenui ; plicis lamella3formibus furcatis, adnato-decurrentibus. Behring's Straits. — Eesembles the white vai'. of C. cmrantiacus. 67. C. Nivosus, Berk. & Curt. : candidus ; pileo galeisformi mem- branaceo subtiliter pulverulento ; lamellis angustissimis hie illic anas- tomosantibus. On dead stems of grass. Hong Kong. — Belongs to the same section as O. retirugus. 68. Marasmius cremoriceps, Berk. & Curt.: pileo umbiHcato candido glabro ; stipite cartilagineo sursum rufescente ; lamellis decur- rentibus cremoricoloribus. Amongst dead leaves and gr^ss, Japan. — Resembles Agaricus phyl- lophylus. 69. M. galeatus, Berk. & Curt. : candidus ; pileo resupinato e pezizff'formi galeato glaberrimo ; lamellis e puncto centrali radiantibus. On dead stalks, Japan. — Pileus looks like kid leather. 70. M. petalinus. Berk. t his love for the science had been shown long before he came to Harvard, and even a quarter of a century earlier he made a careful survey of the Greenwich Observatory, at the request of Professor Farrar, with direct reference to the superintendence of the erection of an observa- tory at Cambridge. This was in the year 1815, at a time when only a small fraction of the present members of this Academy had reached the age of manhood, and while Bowditch was still in Salem, with his great intellect just beginning to dawn upon the learned societies of Europe. When Mr. Bond returned from England, he set up a small observatory of his own, where he undertook the observation of occulta- tions and eclipses. It was here that he developed one of the finest ele- ments of genuine enthusiasm and true genius, that of accomj)lishing much with small means. In this liberal age, when there is such a generous flow of material aid to the laboratories of science, there may be danger that the ostentatious display of the appliances for discovery will be substituted for the performance. On the contrary, a healthy state of pubhc opinion should demand that the intellectual product be commensurate with the greatness of opportunity, and that the magni- tude of donation should be proportionate to the reasonable anticipation of the corresponding increase of knowledge among mankind. " "While Mr. Bond was devoting himself to astronomy with simple and unassuming zeal, he attracted the kind and approving regards of men whose approbation and friendship were worthy of being secured, and who never deserted him. When, in the year 1842, he was drawn to Cambridge by the strong hand of President Quincy ; when the cause of the Observatory was undertaken by the unflinching and irresistible vigor of my friend, Mr. J. Ingersoll Bowditch ; when even the heavens came to our assistance, and that wonderful comet of 1843, appearing at mid-day in close proximity to the sun, and seeming to send off in a few hours its immense train of two hundred millions of miles in length, ex- cited most opportunely a universal interest in celestial phenomena, — it was then apparent that the aftection for Mr. Bond was the chief strength of the occasion, and to that were we mainly indebted for the successful attempt to obtain the unrivalled equatorial of the University, and to lay the foundations of the Observatory. In the history of Amer- OF ARTS AND SCIENCES. 165 ican science there is no more memorable epoch. An Observatory was finally established, — that natural and almost necessary centre and nucleus of science. The mathematicians must thenceforth concentrate upon it, the physicists must gather upon the geometers, and then the chemists, geologists, physiologists, and the whole sphere of the sciences, must condense and organize around it, by a law as certain as that by which the stone tends to the centre of the earth, as organic as that by which the homogeneous egg grows into a living being, with all its system of vital organs and intricate machinery, and as comprehensive as that by which the nebulaj are condensed, through spirals, rings, and spheroids, into astral and solar systems. The habitations of the other sciences are free to move from place to place, but the temple of astron- omy is fixed in its position ; with its towers and piers, it stands immov- able, and the wise men who would worship in it must seek it beneath the star which" stands above it. The observatory is immovable, with its foundations deeply imbedded in the solid earth, but its telescope ever points in that direction where all science must begin and end, — toward God's throne, toward the perpetually moving and infinitely deep ocean of the stars, — and ever raises us neai*er and nearer to the lessons which the Creator has written upon the firmament. Is it not, then, the truest type of eternal progress founded upon immutable prin- ciple ? " The astronomical researches of Mr. Bond while at the Observatory are so recent, that I need only allude to them. By the habits of his life his attention was especially drawn toward the improvement of the in- strumental means of observation. Hence we have from him, and under his administration, — 1st. The ingenious Observing-Chair of the great equatorial ; 2d. The Spring- Governor, which, whatever may be the rival claims as to the invention of the admirable telegraphic method of observation, which is replacing all other methods, has even been intro- duced into the Observatory of Greenwich, and is everywhere known as the American method, is generally admitted to be much the finest con- trivance yet invented for the making and preserving of its records, and which has also been recently adopted, with extraordinary success, for the sustenance of a most exquisite form of uniform rotation ; and 3d. The application of photography to the sun, moon, and stars. " In his original investigations, he naturally restrained himself to those forms of observation which were fully within the reach of his 166 PROCEEDINGS OF THE AMERICAN ACADEMY own resources. He did not, therefore, seek those inquu-ies which could only be accomplished by long, intricate, and profound mathematical compulations, but preferred those which were merely dependent upon the thorough discipline of the senses. He consequently availed himself less of the remarkable capacity of his instrument for delicate and re- fined measurements, than of its exquisite optical qualities. But when observations were required which must be passed over to the computer, his skill was not wanting to the occasion. Thus, in conjunction with Major Graham, he made that choice series of observations from which the latitude of the Observatory was determined. His observations, and those made under his administration, upon the nebulte of Orion and Andromeda ; the interesting discoveries as to their revolution and pe- culiar configuration ; the researches into the physical aspects of the different planets, and especially those upon the Saturnian system ; and the remarkable discoveries of the larger ring and of the fluid constitution of the ring, and of the eighth satellite, — need only be named. They are known to all ; they have passed into the text-books of astronomy, and our children's children will be familiar with the name of Bond. " Permit me, Sir, to embody my high estimation of Mr. Bond in the following Resolutions : — " Resolved, That, as Fellows of the American Academy of Arts and Sciences, we are grateful for the long and valuable services of William Cranch Bond, who has proved that an American mechanic can accom- plish one of the highest positions in science, and whose astronomical discoveries have illustrated his country and his Observatory, and stamped his own name honorably and indelibly upon the records of history. " Resolved, That in the simplicity and sincerity of his Christian life, which, purifying his spiritual atmosphere from all influences which might disturb observation, imparted that serenity and tranquillity which charmed his friends, and was manifest in the modesty, neatness, and integrity of his various communications to the public, he was an exam- ple which we grieve to have lost. " Resolved, That a copy of these Resolutions be communicated to his family, with the expression of the profound sympathy of the Academy in their great and sudden bereavement. " Resolved, That copies of these Resolutions be transmitted to the different learned and scientific societies of which Professor Bond was a member." J OF ARTS AND SCIENCES. 167 The resolutions were seconded by Hon. Josiah Quincy, in the following words : — " I cannot refrain from offering a brief tribute to the memory of William Cranch Bond, with whom my acquaintance began early in this century, and has continued to the present time. His name re- calls that of his maternal uncle, Richard Cranch, of whom a transient notice is not out of place. He was one of our number, and was among the early associates of this Academy. As his position in- dicates, he was one of the distinguished men of his day, — sought, honored, and beloved. His look and countenance are almost identi- cally expressed in the portrait of John Locke, prefixed to the folio edition of his works ; and his contemporaries recognized in Mr. Cranch the same searching, liberal, intelligent spirit. The character of Mr. Bond was, I doubt not, influenced by that of this relative. In their talents and temperament there was a marked similarity. Each of them gentle, simple, and unobtrusive in mind and manners, — casting a natural light on the objects of thought and discussion, without seek- ing or expecting any self-illustration from the reflection of its rays. "William Cranch Bond was born in Portland, Maine, in 1789. The removal of his parents to Boston, in 1790, gave him the advan- tage of the common schools for a short time, but pecuniary restrictions obliged him to become an apprentice to his father, ' before,' as he said, * he had learned the multiplication-table,' in the business of a watch- maker and a regulator of chronometers. To acquire greater accuracy in his employment, he was accustomed to take the altitudes of heavenly bodies in hours stolen from business or sleep, and supplied the want of adequate instruments by inventions of his own. His observations of meridian transits were first made by adjusting sight-vanes to the side of a house, over which he noted the appearance and disappearance of the stars. To improve his sight, he was accustomed to gaze for some time into a deep well before searching the sky for comets and indistinct objects. "The total eclipse of the sun in 1806 first directed the attention of Mr. Bond to the study of astronomy, at the age of seventeen. "In 1811 the observations he made on the comet of that year were honorably noticed by Professor Farrar, and published in the third volume of the Memoirs of the American Academy (page 308). This 168 PROCEEDINGS OF THE AMERICAN ACADEMY obicct was detected by liim four months before it was seen at Cam- bric] "-e ; not by accident, for at this time he was in the habit of care- fully noticing celestial phenomena, but with little assistance from in- struments; and his talents and attainments now drew upon him the attention of scientific men in this vicinity, — among others, of Professor Farrar and Dr. Bowditch. By their influence, he received from the Corporation of Harvard College, in 1815, a commission to examine the Observatories and their instruments in Europe. On his return, he constructed the model of a dome, which, in all essential respects, resem- bled that erected thirty years afterwards at the Cambridge Observatory. The mode now univdrsally adopted for supporting and moving it, is claimed to be his original invention. "In the autumn of 1839, I learnt that Mr. Bond was engaged under an appointment and contract with the government of the United States, with a well-adapted apparatus, in a series of observations on meteorol- ogy, magnetism, and moon culminations, as also on all the eclipses of the sun and moon, and Jupiter's satellites, in connection with those which should be made by the officers of the expedition to the South Sea, commenced under the authority of Congress, for the determina- tion of longitude and for other scientific purposes. I was at that time President of Harvard University, and being satisfied, by inquiry, of the depth and extent of the scientific attainments of Mr. Bond, and of his singular fidelity and exactness as an observer, I proposed to him, before asking the sanction of the Corporation, to transfer his astronom- ical observations from Dorchester to Cambridge, and to unite his astro- nomical collections with those the University possessed, and carry them on there, and thus draw the attention of the students and the public more forcibly to astronomical science, and create a general in- terest in the community on the subject, and perhaps form a nucleus for an efficient institution. " To this end I promised him the rent of a house, that three thou- sand dollars should be raised by subscription and apphed to the erec- tion of a building, which, though humble, should have the name and some of the requisites of an Observatory. I intimated the hope that by these means, aided by his labors, character, and influence, an im- pression might be made on the public of the wants of the University in this respect, and a desire created to supply them. "This proposal, so in unison with his pursuits and talents, I expected OF ARTS AND SCIENCES. 169 would be received witli pleasure, or at least some expression of satis- faction. But it was far otherwise. In the spirit of that innate modesty which predominated in his character, and apparently cast a shadow over all his excellent qualities and attainments, Mr. Bond hesitated, doubted his qualifications for the position. He said his habits were not adapted to public station ; that our combined apparatus would be small, and that something great might be expected ; that he preferred independence in obscurity to responsibility in an elevated position. He raised many other objections, which need not here be repeated, as they were over- come ; and he ultimately transferred his astronomical collections to Cambridge ; three thousand dollars were raised ; the Corporation pro- vided him with a suitable house, on which a rotary rotunda was raised, from which students of the University nightly watched falling stars, and astronomical observations began more and more to interest them and the community. The kind and unpretending demeanor of Mr. Bond, united with his recognized attainments, greatly contributed to effect the desired result. It is not too much to say, that the extent of his knowledge, the winning urbanity of his manners, and his exemplary exactness in life, and as an observer, in a great degree effected the attainment of those large means and increased powers, which ulti- mately raised to its present prosperous state the Observatory over which, through subsequent life, he watched, and which he left at death honored and improved by his labors and genius. " I have expressed my sense of his worth and of his virtues ; it is for others better qualified to analyze and dilate on his scientific ac- quirements." Mr. Quincy was followed by Hon. Robert C. Winthrop, who said ; — " I have no purpose, Mr. President, of detaining the Academy, at this late hour of the evening, by adding superfluous words to so full, so just, so appropriate a tribute, as that which has already been paid to the memory of our lamented associate. The privilege of dealing with such a career and character as Mr. Bond's belonged eminently to my accomplished friend. Professor Peirce, and to our venerable host. Pres- ident Quincy ; — and I am entirely conscious how small a claim I have to unite with them in bearing testimony to the peculiar merits of so distinguished a man of science. VOL. IV. 22 170 PROCEEDINGS OF THE AMERICAN ACADEMY " It has happened to me, however, for six or seven years past, to be a member of the Committee, appointed by the Overseers of the Univer- sity, for visiting the Observatory at Cambridge ; and, during three or four of those years, to be the Chairman of that Committee. In this ■way, I have been brought into frequent connection and consultation with the late Director, and have been one of the authorized witnesses of the manner in which he discharged his responsible and arduous duties. " I desire, therefore, in a single word, to express my deep sense of his devoted fidelity to the interests of the institution over which he presided ; and, especially, of his uniformly kind and obliging attention to every inquiry, recommendation, or suggestion of those who, from year to year, were deputed to examine into its condition. " His own scientific attainments never rendered him impatient to- wards those of humbler pretension ; still less did they blind him to higher truths than any which telescopes can reveal. I only echo the sentiment of one of the pending resolutions of Professor Peirce in saying, that a pure and beautiful spirit of Christian faith and love seemed to actuate his whole conduct, manifesting itself, calmly but clearly, alike whether he conversed with his fellow-men, or whether he conversed with the stars. " It is this which would alone make his memory precious to his friends, even were his ingenuity forgotten, his inventions superseded, his science obsolete. It is this which consoles them with the hope, that, though he has now passed out of the field of mortal view, — far, far beyond the range or reach of reflector or refractor, — he may here- after be seen among those who 'shall shine forth as the sun in the kingdom of their Father,' " It may be well for us all, Mr. President, not to forget, at a mo- ment when literature and science are mingling their tears over the ashes of two of their most ardent and most successful votaries, that the qualities of both which are now most fondly recalled, are not those alone which peculiarly belonged to them as the historian and the astronomer." Mr. Charles Folsom next spoke, as follows : — " Mr. President, — The gentleman who presented the resolutions be- fore you, in his earnest and discriminating tribute to the merits of Mr. OP ARTS AND SCIENCES. 171 Bond as an astronomer, said that he saw around him so many of his friends and neighbors, that it was hardly necessary to speak of his per- sonal qualities as witnessed by them in private intercourse. To them, indeed, it is not necessary. They anticipate at once all that can be said on this point. But, Sir, Mr. Bond was for so long a time obliged to consecrate whatever of time and health his physical infirmity left at his disposal to the study of the heavens, that his earthly relations were comparatively contracted ; and many who have been nigh dwellers have had to regret that they could not, with a true regard for him, seek to be neighbors. I happen to be one of the few persons present who began to know him, in social and domestic life, long before he came to the University ; and we know, that, to the last, in his domestic and social relations he manifested the spirit of the heaven of heavens, — there is but one word for it, — love. It was his very nature. " President Quincy has informed us how the professional astronomer was superinduced on the devoted father of a family. Mr. Bond was also the staff of his own venerable father, to be again, in his turn, blessed during his public scientific career with the support — the co- operation of mind, heart, and hand — of one who has been to him at the same time a son and as a brother. Allusion has been made. Sir, to the beautiful blending of these relations in the case of the deceased friend whom the Academy has just commemorated. The parallel occurred to me when the parties were all living ; and I trust that the mention of it now is not out of keeping in a meeting like this. I heartily second the resolutions." The resolutions were then unanimously adopted. Four buudred and sixty-first meeting. February 22, 1859. — Supplementary Meeting. The President in the chair. Professor Gray resumed the subject of his communication to the meeting on January 11, upon the distribution of plants in the northern temperate zone, and especially in North Amer- ica and Eastern Asia, and undertook to indicate some of the vicissitudes to which our extant vegetation must have been exposed in earlier times, and which must have influenced the geographical distribution of the species. 172 PROCEEDINGS OF THE AMERICAN ACADEMY He remarked that, for obvious reasons, the remains of plants are not so likely to be found in recent terrestrial formations, as the bones of animals ; but when they do occur, they furnish most important data. Researches into vetretable fossils of the tertiary and quaternary formations have recently been commenced in this country by Mr. Leo Lesquereux, who has already shown, in the very beginning of these investigations, that some of our species of plants were in existence anterior to the drift or glacial epoch, and even in the later tertiary period. For instance, in the chalky banks of the Mississippi River, near Columbus, Kentucky, regarded by Mr. Lesquereux as anterior to the drift, this accurate botanist had identified fossilized leaves of our Live- Oak, Honey-Locust, Pecan, Planer-tree, Chinquapin Chest- nut, and Prinos lucidus, besides those of an Elm and of a Ceanothus, which were only doubtfully referable to existing species. The position of the strata bearing these fossil leaves had been indicated by Professor J). J). Owen " as about one hundred and twenty feet lower than the ferrugineous sand in which the bones *of the Megalomjx Jeffersonii were found " ; so that if not anterior, they must have been immediately sub- sequent to the glacial period; — most likely the latter, since all the vegetable remains of this deposit, which were in a determinable condition, were either positively or probably referred to existing species of the North American flora, although most of them now inhabited a region a few de- grees farther south. Again, in a deposit, certainly older than the drift, near Somerville, Tennessee, which Mr. Lesque- reux regarded as belonging to the lower or middle pliocene, among fossil leaves all apparently referable to genera of the present flora, two fifths of the species were identified by Mr. Lesquereux with existing species ; those of which the iden- tification was undoubted, viz. Per sea Carolinensis, Prunus CaroUniana^ and Quercus myrtifolia, now belonging to the warm sea-coast and islands of the Southern States. Professor Gray remarked that this coincided with other OP ARTS AND SCIENCES. 173 evidence, which conspired to render it in the highest degree probable, as he thought, that at least a considerable portion of our temperate flora was in existence in the early post- tertiary, and even in the later tertiary times. Also, that this early temperate flora then ranged much farther north than now. This he thought clear, both from the species identified in these deposits, and especially from the character of the land animals which in those days roamed over the plains of the Nebraska, consisting of Camels, Horses, an Elephant, a Mastodon, a Rhinoceros, &c. ; these herbivorous animals most probably feeding in great part upon herbage like that of the present period, since herbaceous plants and grasses are likely to be more ancient than trees. And, since these animals must have had a truly warm-temperate climate. Professor Gray would positively infer that, in lat. 40° - 43°, they were not living anywhere near the northern limit of the temperate flora ; so that the temperate flora, which now crosses the six- tieth parallel in Western Europe, must have then extended to at least as high latitudes in Western North America ; and this would make the temperate floras of North America and of Northeastern Asia essentially conterminous, and therefore commingle a certain number of species. Subsequently, the glacial epoch, coming slowly on, did not destroy the species, or at least did not destroy those species which Mr. Lesquereux has identified with existing ones, so that the same may be inferred of similar species. Those which did survive through a period which brought an arctic climate down to the northern part of the Southern United States, it appeared certain to Professor Gray, must have been pushed on still farther south, and between them and the ice there must have been a band of cold-temperate and of arctic vegetation, perhaps as broad as that now inter- posed between Live-Oaks, Chinquapin Chestnuts, or Pecan- trees, and the present ice. The existence at that period of an arctic flora, of species identical with*the present, was demonstrated by the arctic species which, retreating up our 174 PROCEEDINGS OF THE AMERICAN ACADEMY mountains as the climate gradually grew milder, still exist scantily upon the highest peaks of the Alleghanies, and in greater numbers upon the cooler mountain-summits of New England and New York. As the ice receded northward at the close of the glacial period, the temperate flora would naturally follow it ; and Professor Gray insisted, as a most important point in the present discussion, that the temperate vegetation must have again advanced, after the glacial epoch, much farther north, and especially northwest, than it now does ; so far north, indeed, that the temperate floras of North America and of Eastern Asia — before conterminous, and then most widely separated — must have again become conterminous. How- ever it may have been in the ante-glacial period, — although it appears certain that some, and probable that many, of our species of plants then existed, — Professor Gray thought it could not be doubted that most of our present species were in existence immediately after the glacial period, and there- fore liable to interchange with Eastern Asia at a time when the temperate floras of the two regions were contiguous. The evidence of such contiguity during what Professor Dana terms the fluvial epoch, which succeeded the glacial. Professor Gray remarked, was that a milder climate than the present then supervened, — perhaps not so much higher in the mean temperature of the year at the North, as more equa- ble, — a more oceanic climate, such as would naturally result from the extensive submergence of northern, or at least of northeastern land, when the sea stood five hundred feet above its present level in the basin of the St. LawTcnce, and our great alluvial plains, from fifty to three hundred feet above the present bed of the rivers, were flooded. Professor Gray alluded to the character of the herbivorous animals of that period, and their high northern range, as demonstrating that our temperate flora then reached northward far beyond the arctic circle ; for that was the era of the Megatherium, Megalonyx, Mylodon, Mastodon, a Dicotyles, a wild horse, OF ARTS AND SCIENCES. 175 &c. in the United States ; when the Elephas Americanus ranged north to Canada, and the Siberian Elephas primi- g-enius from Canada to the Arctic Sea, as well as in Europe and Asia from lat. 40° to the shores of the Arctic Ocean, — in the Old World accompanied by a Rhinoceros, which in Siberia ranged as far north as the Elephant. Taking this as proof that the temperate floras on both sides extended fully up to Behring's Straits, — if, indeed, these straits then ex- isted,— Professor Gray was unable to suppose that species of plants did not come or go when the Siberian Elephant did. This warm or mild period was followed by the terrace epoch, as Dana terms it, — a time of transition towards the present condition, bringing the northern part of this continent up to its present level and down to its present cool tempera- ture, so giving to the arctic flora its present extent, and again separating the temperate floras of the New and of the Old World to the extent they are now separated. Professor Gray observed, that he could not appreciate the objection that the admission of such vicissitudes militated against the idea of a plan in creation, and in " the adaptation of organic types to similar corresponding physical features," unless the objection goes to the extreme of implying that the present state of things so strictly represents the primitive con- dition as to exclude second causes, and to deny that physical influences, known to have been in operation, should have pro- duced their natural effects in former times as well as now. Looking at the long and eventful history of vegetable species. Professor Gray was not inclined to think that the Eriocaulon septangular e of our Atlantic border was separately created also in the Isle of Skye and a few of the neighboring Hebrides, and in a local station on the western coast of Ireland, while it occurs nowhere else in the Old World, and has not a single generic or ordinal representative in Europe, — nor that the Gin- seng was created in three widely-separated parts of the world, viz. in Eastern North America, in Japan and Mantchuria, and 176 PROCEEDINGS OF THE AMERICAN ACADEMY in NeiDaul, — any more than that patches of Alpine vegeta- tion, wholly of Labradorian species, were separately created on Mount Katahdin in Maine, the White Mountains of New Hampshire, and a few summits of the Green Mountains and Adirondacks. , As respects the vegetation of former epochs, so far was Professor Gray from conceding " that the present distribution [of plants] was linked with that of earlier periods in a man- ner which excluded the assumption of extensive migrations, or of a shifting of the flora from one area to another," that he was, on the contrary, struck with the remarkable dissimilar- ity between the early tertiary and the more ancient floras of Europe and America and that now existing ; for example, the miocene flora of the coast of Oregon being very like that of Switzerland of the same period, and in both a tropical flora of predominant Australasian types ; the eocene flora of at least some parts of Europe being prominently Australian ; the flora of Europe, even since the creation of some existing species, possessing numerous North American types of which there are now no representatives whatever on that conti- nent, &c. In conclusion Professor Gray remarked, that, when we speculate about the origin of species, we launch out beyond the region of induction, and have only analogies or probabil- ities to guide us, which we have to weigh one against another as well as we can. And he deemed it very important to the progress of science that different investigators should start from independent and opposite preconceptions or lines of thought. His preconception was that of the local origina- tion of species ; not origination in single individuals or single pairs, — which might or might not be the case in different species. The improbability of single origin appeared to him to be great in the lower grades of animals ; the probability of it greater and greater as we rise in the scale of being. But the local origination of each species appeared to him not only the natural hypothesis to begin with, as he had before OF ARTS AND SCIENCES. 177 remarked, but also the one which, on applying it to the case in hand, he thought best adapted to explain the actual distribu- tion of plants. Although not inclined to defer too much to a priori reasoning, he thought it was suggested by philosoph- ical considerations, as well as by the induction of observa- tions ; being a natural inference from Maupertuis's principle of least action, viz. "that it is inconsistent with our idea of Divine Wisdom to suppose that God would use more power than was necessary to accomplish a given end." According to Professor Peirce, this principle is strictly verified in all the mechanical arrangements of the universe ; so that we cannot but think it applicable to the organic world also ; — in which there would appear to be a vast waste of power, if, in the case of beings endowed with such immense multiplying power as plants, as many individuals were created ab initio as there were ever subsequently to be. The discussion was continued by Professor Agassiz, who remarked that Professor Gray had fairly represented his view of the origin of animals. Botanists, he said, have considered the distribution of plants mainly in connection with the influ- ence of physical agents, whereas zoologists had regarded the distribution of animals from a palsBontological point of view, and from this latter point of view he had himself been led to the opinion that animals were primarily distributed about as they are at the present time. Professor Agassiz argued that climate has very little to do with the distribution or specific characters of animals, from the facts observable at the present time. Near the poles, he remarked, the conditions of existence are quite uniform, and in the tropics they are the same so far as climate is concerned. In the arctic regions we find many animals absolutely iden- tical in both hemispheres, and many very closely related to each other ; in the regions of the tropics, on the other hand, there is no similarity in the animal life of the two hemispheres, although the climate is the same. It is evident, therefore, that the peculiar characters of the Faunas of these regions cannot VOL. IV. 23 178 PROCEEDINGS OF THE AMERICAN ACADEMY be ascribed to the influence of climate. In passing from the arctic to the tropical regions, the uniformity of animal life in the former passes gradually into the extreme diversity of that in the latter, and in the causes of difference in the tropics Professor Agassiz said he saw the reasons for all differences, wherever observed. How far back, he asked, does this state of things go ? In the tertiary times of Australia the peculiar types of animal life existed which give at the present time the distinc- tive character to its Fauna, and the same is true of the ter- tiary Fauna of South America. These facts, and others like them, have led him to believe that animals were primarily distributed over the surface according to a plan hardly intel- ligible as yet to us, but independent of climatic influences. This plan he believed included the preparation for the earth's surface and the various external conditions of their existence for its inhabitants, before they were created, very much as a householder lays his foundation and builds the superstructure and arranges the furniture of the interior for his residence be- fore occupying it. Professor Gray had quoted a number of plants as identical in the tertiary and the present period. Des Hayes and Lyell had admitted the same with regard to the animals of these periods. Professor Agassiz said he had doubted the fact in the case of animals, and had therefore early in his scientific career collected many specimens to settle the question, and in every instance where he had sufficient materials he had found that the species of the two epochs supposed to be identical by Des Hayes and Lyell were in reality distinct, although closely allied species. He was therefore inclined to ask whether it might not be possible that the same is the case with the plants of the tertiary period and those of the present day ? He could not but believe that, if Professor Gray were to exercise the same critical judgment upon the fossil Flora which he does with reference to the existing Flora, he would find differences between the species of the two epochs simi- lar to those found in the animal world. There is not, at the OF ARTS AND SCIENCES. 179 present time, he added, an equal knowledge of all the facts in Botany and Zoology. Professor Agassiz referred to his former statements with regard to the similarity of the turtles of Eastern Asia and Eastern North America, and of those of Western North America and Europe, and showed how these differences seemed to be related to the geological age of these respec- tive regions, and were at variance with the supposition of an interchange of species, such as Professor Gray believes to have occurred in the vegetable world : in the instance quoted, there is an alternation of two fields of animal life of entirely different types. In conclusion Professor Agassiz reiterated his statement, that he believed that the present races of ani- mals were originally created on the earth in about the same proportionate numbers as they are found to have at the pres- ent time, and in about the same localities as those they now occupy. Professor Peirce spoke of the changes of temperature which had been referred to as having influenced the distribution of plants and animals, and said he thought it an important in- quiry, to discover how such a change could have taken place. With regard to the supposed cooling down of the earth, he showed that the conditions under which it could have taken place were inconsistent with the existence of plants and ani- mals on its surface, and the time when it must have occurred must have been long before they were created. The sun's temperature, he said, might have undergone changes from time to time, but there was no proof that such had been the case ; and if it had been so, the eflect on the earth would have been uniform. The change of the area of the land, and the eleva- tion of portions of the earth's surface, would account for the glacial period, and climatic and meteorological changes might have resulted from changes in the amount of the earth's at- mosphere. 180 PROCEEDINGS OF THE AMERICAN ACADEMY Four Iiuntlred and sixty-second meeting. March 8, 1859. — Monthly Meeting. The Academy met at the house of Dr. N. L. Frothingham. The President in the chair. The Corresponding Secretary read a letter from Mr. G. P. Bond, in acknowledgment of one from himself communicating the resolutions passed by the Academy on the occasion of his father's decease ; and one from Mr. W. W. Goodwin, accept- ing fellowship. Professor C. C. Felton made the following communication on Greek Pronunciation : — " In the fourth volume of the Memoirs of the American Academy, published in 1818, there is an elaborate paper on the Modern Greek Language, by the late John Pickering of Boston. The materials for this learned contribution were partly gathered from conversations with a well-educated Greek, a native of Navarino, — the sandy Pylos of old Nestor, — Mr. Ciclitira,* the mate of a Greek ship then lying in the harbor of Boston. This gentleman had received a fair school educa- tion in his youth : he could read Homer well ; and the letter addressed by him to Mr. Pickering does credit to his acquirements, both in chi- rography and style. It is an interesting illustration of the effects of what the Greek patriots have done, in the latter half of the last cen- tury and the opening of the present, to improve the intellectual condi- tion of their oppressed countrymen. Mr. Pickering, with characteristic zeal for knowledge, seized this opportunity to investigate the actual condition of the Modern Greek language. By comparing the present pronunciation of the spoken language with the statements of the old grammarians, he came to the conclusion that it is, in all essential par- ticulars, nearly identical with that which prevailed in the period imme- diately following the Christian era. " Since Mr. Pickering's time, the Modern Greek has been more studied, and it is now understood by a larger circle of scholars. But to him belongs the honor of having, earliest among the scholars of our day, given the subject a thorough investigation, and of having published OF ARTS AND SCIENCES. 181 tlie results to the world. I say the scholars of our day, because, as is well known, when the study of the Greek language was generally intro- duced into the universities and schools of Central and Western Europe, by the learned Greeks who fled from Constantinople after the capture of the city by the Turks in 1453, it was taught with the Byzantine pronunciation of that day, and so continued to be taught until the time of Erasmus, who proposed a new but theoretical system. The Greek pronunciation of the Greek language gradually disappeared from the schools of Europe, and has never been known in the schools of America. It is now taught only in Harvard University. " The visit of the Greek ship to the United States occurred three years before the breaking out of the insurrection against the Turks. For seven dreadful years Greece was overrun by swarthy hordes of barbarians from Asia and Africa, and was reduced to the lowest stage of poverty and distress. Yet the first revolutionary government made provision for a system of public education, adopting as fundamental principles of the provisional constitution under which the war was carried on, the universal education of the people, and the perpetual exclusion of slavery from the soil of Hellas. When, by the interven- tion of the great powers of Europe, a portion of ancient Greece was organized as an independent kingdom, and Prince Otho, the second son of the king of Bavaria, was placed upon the throne, the system of public education was among the earliest subjects of interest to the new government ; the Constitution of 1843 embodies and extends the prin- ciples already established ; and at the present moment the schools, gymnasia, and University of Greece are objects of pride and affection both to the people and the government, and are centres of light which are rapidly illuminating all that part of the world. " The Greek language had never ceased to be the written and spo- ken speech of the descendants of the ancient Hellenes. It had never been broken up and supplanted by foreign dialects. Even the ancient grammatical forms and constructions had been preserved by writers, -if not by speakers, down to recent times. But language is fluent and changeable. It cannot remain absolutely fixed and immutable ; for the human mind, of which it is the organ, is in perpetual motion, and lan- guage silently but surely undergoes perpetual change. From Homer to Demosthenes the Greek language passed through a wonderful series of historical developments. From the time of Demosthenes to the 182 PROCEEDINGS OP THE AMERICAN ACADEMY Christian era still further changes took place. From the Christian era to the establishment of the Byzantine Empire a similar process went on, and during the long succession of ages through which that empire lasted, the language, sharing its permanence, shared also its vicissitudes. Again, during the four centui-ies of Turkish oppression, the fortunes of the language corresponded to the unhappy condition of the people. It was corrupted by the intermixture of foreign elements, ' and participated largely in the degradation of the race ; but with the reviving sense of nationality and the growing desire of independence which in the last quarter of the last century breathed the breath of a new life into the Hellenic race, and finally led in the present century to the establishment of the kingdom of Greece, commenced the process of the purification and the improvement of the language. At the pres- ent day the style of the educated, as exhibited in the literary and polit- ical journals, in the lectures of the professors, in the parliamentary debates, and in the eloquence of the pulpit, is good Greek. In all these revolutions the language of the Greeks (to borroAv the expression of Professor Sophocles) has never lost its consciousness, — has never ceased in form or substance to be Greek. " "What, then, has it lost ? In the pronunciation of the ancient clas- sical languages there were two elements, both of which were carefully attended to. These elements were accent and quantity. In modern languages, on the contrary, quantity does not exist as a fixed element of pronunciation. In the ancient Greek and Latin the pronunciation of educated people combined both, and to mark them both was the test of the education of a gentleman. It was almost one of the fine arts, combining the musical proportions of time in a much larger degree than any language now spoken with rhetorical accent and emphasis. It is evident that this musical property of enunciation is more a matter of art, and less vital to language as the organ of thought, than accent or emphasis. Accordingly, when the prosperity of the state and the high standard of education began to decline, musical proportion in common speech began to disappear, and finally it was preserved only in artificial compositions, formed upon the ancient rhythmical models, and resem- bling the hexameters and pentameters written as school exercises in our day. Accent, however, is a vital and indestructible element, both in common and cultivated speech. More than anything else it gives significance to words. Vowels and consonants frequently modify their OF ARTS AND SCIENCES. 183 sounds in passing from age to age, and from country to country. But the place of an accent seldom changes. Greek vowels have been mod- ified, but the Greek accents remain. In the English language, compar- atively few words have changed their accent since the time of Chaucer. The verses of that delightful poet may be easily and intelligently pro- nounced by the English reader of the present day, and the accent of almost every word remains the same as when he wrote. " What, then, has the Greek language lost ? It has lost quantity, or the musical proportion of syllables, in its pronunciation ; but it has re- tained the system of accents substantially as they existed in the time of Demosthenes. When the Greek was taught to the Romans in an- tiquity, it was taught by native Greeks, with quantity as well as with accent. When it was taught in Western Europe, after the fall of Con- stantinople, it was taught by native Greeks, without quantity, but with . accent. In the Greek and Latin languages, quantity, though funda- mentally different from accent, was connected with accent and influ- enced by it ; but the relations between these two elements were dif- ferent in these two languages. In the Greek the position and kind of accent were to a great extent controlled by the quantity of the final syllable, namely, the accent could go back no farther than to the pe- nultimate if the final syllable was long, and might go back to the ante- penultimate if the final syllable was short. In the Latin the place of the accent was controlled by the quantity of the penultimate syllable ; if that was long, it was also accented ; if short, the accent went back to the antepenultimate. The coincidence of accent and long quantity in the Latin penultimate has created the strange impression that accent and quantity are identical. For example, in amaverunt, the third person plural of the perfect tense of amo, the e in the penultimate is long ; it is also accented, but it is not long because it is accented, but the reverse, — its musical measure is long, — and the accent is a greater stress of voice only ; the last syllable is equally long, but is not accented ; — and in the word hominibus the accent is on the i of the antepenultimate, while the quantity of that syllable is short. And yet by the English and Ameri- can classical ear, accent and quantity are universally confounded ; and in England and America it is supposed that, by reading Latin with the Latin accent, we are observing the quantity of that language. More strangely still, it is fancied that, by reading the Greek with the Latin accent, we are observing the quantity of the Greek. That is to say, we 184 PROCEEDINGS OF THE AMERICAN ACADEMY have adopted it as a principle, that, having lost both Greek and Latin quantity, by rejecting the Greek accent and substituting for it the Latin accent, we have acquired a true Greek pronunciation. In reality, we do not give the quantity in either Greek or Latin, and we have simply transferred the Latin accent to the Greek. We may per- haps understand the effect of this proceeding by transferring the Eng- lish accent to the French language, and then reading a passage of it to a highly cultivated Parisian. In England it is as much as a man's reputation is worth to pronounce the word av6pco7ros with a Greek ac- cent. The American scholar who should do so at Oxford or Cam- bridge would be set down as a mere barbarian. He only knows Greek who pronounces it wrong, that is, pronounces it according to the accents of the Roman tongue. " Following the changes in the pronunciation of the language, the poetical rhythms of the Greek since the tenth or eleventh century, or even an earlier period, have been founded on accent. The first known compositions qf this kind are without rhyme. The poems of Ptocho- prodromos are in unrhymed iambic tetrameter catalectic : most of the Klephtic ballads are in the same measure, which is as much an estab- lished rhythm in the Modern Greek as the dactyhc hexameter was in the ancient. Rhyme, however, has long been naturalized in the Modern Greek. In the poems of Christopoulos, Soutsos, Rangabes, Valaorites, and others, rhymes are as freely and naturally employed, as in those of Moore, Byron, Scott, and Longfellow. " We must, therefore, admit that quantity is irrecoverably gone from the Greek language : in this respect, the Modern Greek stands in pre- cisely the same position with the other modern languages. The art of combining accent and quantity is lost, and cannot be restored. Who can recall a departed sound ? Who can revive the music of Linus and Terpander? Ancient sculpture may be reproduced: the models are before us. Ancient architecture may be imitated : there stands the Tlieseum, there stand the glorious ruins of the Parthenon. The lyres of Homer and Pindar are broken : their notes are dispersed in empty air. No living ear has heard them, and no art of the scholar can gather them up again. "Ancient rhythms were composed to be chanted. We have sub- stituted reading for the musical delivery of the Greek and Roman poets. For quantity we substitute accent : and it so happens, that in OF ARTS AND SCIENCES. 185 some of the rhythms — as the dactylic — the Roman accent more fre- quently coincides with the ictus of the rhythmical time, than does the Greek accent ; but in many of the rhythms it does not, and it does not uniformly in the dactylic. For example, in the first line of the -^neid, • ' Arma virumque cano Trojse, qui primus ab oris,' in the word cano, the natural accent falls on the short syllable cd, while the metrical ictus falls on the syllable no. The rhythmical ictus and the natural accent coincide four times. " In the first line of the Iliad, M^i/ij/ aeiBe, 6ed, Ilr]\r]'idBea> 'AxtXX^of, the metrical ictus and the natural accent coincide three times. Prob- ably, take the languages through, the proportion of four to three rep- resents the comparative frequency, in the Greek and Latin, of this coincidence. In scanning both Latin and Greek verse, we substitute accentual beat for musical time. In Latin, as well as Greek, the natural accent does not coincide with the quantity. "We do not accent a Latin hexameter as we accent the words which compose it in a prose sentence. We do not accent a Greek hexameter, as we accent the words which compose it, in a prose sentence, whether we accent these words according to the Greek or Roman system. In the ancient musical recitation, quantity was so predominating an element, that ac- cent almost disappeared ; as the English accent disappears in singing an English song. By our accentual reading of ancient verses, we pro- duce only an analogous effect, not at all an effect identical with that of the ancient musical recitation. There is all the difference between them that there is between music and reading, — between singing and saying. " The learned Greeks of the present day admit the loss of quantity from their language; and this has been conspicuously shown by the singular fact, that some of their poets have lately introduced, among their poetical rhythms, the accented hexameter, both in original poems and in translations from the ancient classics. Alexander R. Rangabes, one of the most learned professors in the University of Athens, now the able Secretary of Foreign Affairs, — a gentleman of such indefati- gable industry that, amidst all the cares and labors that fall upon him as a leading member of the Cabinet, he has never omitted a lecture in the University, — this gentleman, a distinguished poet, as well as VOL. IV. 24 186 PROCEEDINGS OF THE AMERICAN ACADEMY scholar and statesman, has published several successful specimens of accented hexameters. In a dramatic poem entitled ^poa-vvr], founded on the tragic episode of Gardiki, in the reign of Ali Pacha of lannina, the description of the bloody transaction is given by the priest Mele- tios of Gardiki, in accented hexameters, commencing as follows : — 'Hroi/ r]jiepa XafiTrpd, dv6o(f)6pos Tuv eapos Kopt] 'PoBocrTepp.€v 17 avyrj els Tovs \6(f)ovs yekcoaa i(pdvrj Kat TO TapbUi aKopr] dneaeie p.6\is tov vttvov, k.t.\. The same author translated the first book of the Odyssey into accented hexameters. I give the first two lines of the original, and then the corresponding two lines of the translation, for the purpose of comparing both the ancient and modern rhythms and the ancient and modern language, begging you to remember that Homer lived three thousand years ago, and that Eangabes is still a young man. Original. "Avbpa pov evvene, Movaa, irokvTponov os paka ttoXXo, TiXayxdrj eVel Tpol-qs Upov TrroXiedpov errepaev. Translation. 1'aXXe TOV avbpa, Bed, tov TroXvTponov, ocrrty toctovtovs ToTTOVS 8iTJ\6e, ■7T0p6r]TTaiKa)v ^ope/iaru tv TrpoTrerws vno Tav dvhpav ovopaadevTav yvvaiKelav iXaT- 224 PROCEEDINGS OF THE AMERICAN ACADEMY TafidrcDV. Eiuai, (pep elnelv, XaXoy Ka\ dBiuKpiros, Koi r^y y\(i(Ta7js, fj pdXKov Tov TToSof, oil Kparovaa. Ovtws els iaTrepivfjv Trore a-vvavaaTpo(j)r]v, dcf) ov TToXXa ipcorrjdelaa dnfjvTTjcre npbs Koivbv Oavpaa-pou /cat Koivi]v biaaKeBaaiv, ipu>Trj6ri reXos Koi TvepX t?]s r}Xt/s Trpoa^aXXovTa to vevpiKov aiXTTijpa.' " * If it only would move and walk about ! But its education seems to be improving every day. It already talks and writes, and counts and sings and dances. But with all these feminine accomplishments, it is not free from some of what are impertinently called by men feminine faults. For example, it is talkative, thoughtless, and unable to govern its tongue, or rather its foot. Thus, at an evening party once, after it had answered many interrogatories to the general wonder and diversion, it was finally questioned about the age of one of the ladies present. The mischievous table, with much grace, raised one of its feet, and began striking the floor lightly, to the very great gratification of all, and especially of the lady, who saw herself the subject of gen- eral attention. It struck one, two, five, ten, and the lady laughed ; fifteen, seventeen, and she continued to laugh. But the table kept on, and the lady's eyebrows began to contract. It struck twenty, twenty- one, and the lady held up her hands ; twenty-two, twenty-three, twenty- five, and the lady pressed down on the table with all her might ; but the cursed piece of furniture continued obstinately, twenty-eight, twenty-nine, thirty ; and it struck the last number with great force, in confirmation of its truth. But on the other hand, at the same moment, the betrayed thirty-years-old young lady fell backwards in a fainting fit, and all confessed that the experiments of the tables are dangerous, as affecting the nervous system.' OF ARTS AND SCIENCES. 225 " These illustrations might be indefinitely extended. They show the direction in which the internal changes of the language are mak- ing. Some of these new terms are made strictly according to analogy ; others not so happily ; but usage soon establishes them. The Greek language is a wonderful phenomenon. It stands alone in the history of human speech, like the wonderful race which first created and still preserves it." Four bundred and sixty-seT-eutli mectiug. May 24, 1859. — Annual Meeting. The President in the chair. The Corresponding Secretary read letters from the Libra- rian of the Royal University of Bonn, November 25, 1858; Societe de Geographic, Paris, November 20, 1858 ; Academic Royale des Sciences a Amsterdam, December 20, 1858 ; Koniglich Sachsische Bergakademie zu Freiberg (Sachsen), November 20, 1858 ; K. L. C. Akademie der Naturforscher, Jena, November 13, 1858 ; Academic Royale des Sciences de Stockholm, November 15, 1858 ; and the Societe Imperiale des Sciences Naturelles de Cherbourg, September 1, 1858, acknowledging the receipt of the Academy's publications ; — from the Academic Royale des Sciences de Stockholm, No- vember 15, 1858, and the War Department, Washington, May 5, presenting their publications ; — from the K. Preussische Akademie der Wissenschaften, August 12, 1858, acknowledg- ing the receipt of the Academy's publications, and presenting its own ; — and from the K. Bayerische Akademie der Wis- senschaften, December 28, 1858, acknowledging the receipt of the Academy's publications, and asking that missing num- bers may be supplied. The Treasurer presented his annual report upon the finan- ces, of the Academy, which was ordered to be entered in full upon the record-book. Professor Lovering, in behalf of the Committee of Publica- tion, and Dr. A. A. Gould, from the Committee on the Library, severally presented their annual reports. VOL. IV. 29 226 PROCEEDINGS OP THE AMERICAN ACADEMY The Council submitted nominations for one Foreign Hon- orary Member, and three Associate Fellows ; also a general report upon the actual state of the Academy, with notices of the members deceased during the past year, as follows : — The following changes Lave occurred in the personelle of the Acad- emy since the last Annual Meeting. Nine members have been elected, to wit : seven Resident Fellows, one Associate Fellow, and one Foreign Honorary Member. The Foreign Honorary Member, Professor Lindlet, was chosen to fill the vacancy in Class II. Section 2, occasioned by the death of Mr. Brown. The Associate Fellow, Sir "William E. Logan, the Government Geologist of Canada, belongs to Class II. Section 1. Of the seven Resident Fellows, two belong to the First, three to the Second, and two to the Third Class. Three Resident Fellows, one Associate Fellow, and four Foreign Honorary Members have deceased during the past year ; in all eight, or one less than the accessions. The Resident Fellows lost from our ranks are "William Cranch Bond, of Class I. Section 2 ; Dr. Ichabod Nichols, of Class III. Section 1 ; and William H. Prescott, of Class III. Section 3. The Associate Fellow is Professor Parker Cleaveland, of Class I. Section 3. • The Foreign Honorai-y Members are Baron Humboldt, Manuel John Johnson, Robert Brown, and Johannes Mltller. The Academy will observe that, although this list of its members recently deceased is not remarkably numerous, yet it mainly consists of most illustrious names. The eulogies pronounced upon the distinguished historian and the eminent astronomer, who were almost simultaneously removed from our immediate ranks, are still fresh in our remembrance. The remain- ing name is that of an accomplished scholar and divine, whose age and infirm health had prevented his attendance at our meetings since his residence in this vicinity. Our late Associate Fellow, Professor Cleaveland, of Bowdoin College, died at Brunswick in October last, at the age of seventy-eight years. He was graduated at Hai'vard College in 1799, where he be- came a Tutor in 1803. Two years afterwards he was appointed Pro- OF ARTS AND SCIENCES. 227 fessor of Mathematics, Natural Philosophy, Chemistry, and Minei'alogy in Bowdoin College, the whole duties of which chair he performed until the year 1828, when he was relieved from the Mathematics, and with this exception until the year of his death, a period of more than half a century. Although somewhat later in the field than Maclure, Gibbs, and Silliraan, and although he gave place in later years to Shepard and Dana, yet Professor Cleaveland may well be called the father of American Mineralogy. His celebrated Treatise on Mineralogy and Geology, published in 1816, and in a second and enlarged edition in 1822, gave a great impulse to the study of those sciences in this coun- try, and made for him a deservedly high reputation, both at home and abroad. That he did not follow up a career of such promise by the original researches and authorship for which his talents and his great and various knowledge eminently fitted him, must be explained by his devotion to the immediate interests of the institution with which he was identified almost from its foundation, and by his conscientious ab- sorption in the duties of his triple or quadruple professorial office, each department of which he is known to have filled w'ith signal ability and faithfulness. Something may also be attributed to his tempera- ment, and to his singularly stationary habits. He is said never to have entered a railroad carriage, and rarely any other vehicular con- veyance. Considering that Professor Cleaveland made no appearance before the public during the last thirty years, it may be noted to the credit for discernment of the officers of the Smithsonian Institution, and as a just recognition of the services of a pioneer in American science, that our lamented associate was chosen one of the first and very few honorary members of that Institution. The four names which now disappear from the list of our surviving Foreign Honorary Members represent so many great lights of science lately extinguished ; two of them, Miiller and Johnson, ere they had attained their full meridian. Johannes Muller, who was perhaps universally regarded as the most eminent physiologist of the present era, died on the 28th of April, 1858, therefore nearly a month before our last anniversary ; but the melancholy tidings had not then reachisd us. Though old in fame, he was still comparatively young in years, having barely reached the age of fifty-seven. 228 PROCEEDINGS OF THE AMERICAN ACADEMY Manuel John Johnson, the late Director of the Radcliffe Obser- vatory, Oxford, was, by a disease of the heart, suddenly removed from the scene of his important labors, on the 28th 'day of February last. He was elected a Foreign Honorary Member of this Academy only about two years before ; and, from his early death, it has hap- pened that his name does not appear upon any published list of our actual members. Educated at Addiscombe, Mr. Johnson entered the Royal Artillery in the year 1821, and it was while stationed on mil- itary duty at St. Helena that his taste and talent for astronomical observation unfolded. Here his leisure, during a residence of ten years, was turned to good account in collecting materials for his St. Helena Catalogue of the mean places of six hundi'ed and six principal fixed stars of the Southern Hemisphere, which was published in 1835 ; a work which, from its sharp accuracy, won for its author at once an enviable reputation. On his return to England he was entered, at a later age than is common, at Magdalen Hall, Oxford ; and in 1839, im- mediately upon taking his degree, he received the appointment of Rad- cliffe Observer, and began the labors which have raised the Radcliffe Observatory to its present high rank. Established in this favorable position, he immediately commenced his principal scientific undertak- ing, the determination, upon a regular and most judicious plan, of the places of the close ckcum polar and the chief northern stars, as far as to the 45th degree of declination. This undertaking he consistently and most persistently carried out, for nineteen years, in each of which a volume of his " Radcliffe Observations " promptly made its appearance. This work was virtually finished, and its value is everywhere recognized from the portions which have long been in use. It only remained to crown the whole by the combination of all the results into a sytematic catalogue. Even this was well-nigh done ; and the first proofs of the volume which was to embody this consummation lay before him, when his hand was suddenly arrested by death. In his employment of the heliometer, — the most complex of astro- nomical instruments ; in the choice and plan of liis investigations ; in the refinement of his methods and the rigorous exactness of his observations ; in the soundness of his judgment ; and, not least, in the conscientious faithfulness and patience with which he assumed and endured such unremitting toil, without making, and without expecting to make, any brilliant discoveries, — he is thought to have manifested the OP ARTS AND SCIENCES. 229 best qualities of the practical astronomer, and to have secured a high place in the annals of the science. Personally, Johnson is said to have been strongly marked in the simplicity and independence of his character, and most attractive by his frankness, geniality, and the full and hearty co-operation which he loved to extend to all his fellow- astronomers. The two remaining names represent stars of the very first magni- tude, which, as they pass from the field of sight on the completion of a long and illustrious course, leave no equals behind them. Beyond the immediate pale of science, and the circle of its most devoted cultivators, this association of the names of Humboldt and Brovtn may seem new and strange ; — the one, a name familiar to the whole civilized world ; the other, hardly known to a large portion of his educated countrymen. Yet these names stand together, in the highest place, upon the rolls of almost every Academy of Science in the world ; and the common judgment of those competent to pronounce it will undoubtedly be, that although these vacant places upon those honorable rolls may be occupied, they will not be filled, in this, per- haps not in several generations. Upon the death of Robert Brovtn, which occurred on the 10th of June last, in his eighty-fifth year, it was remarked that, next to Humboldt, his name adorned the honorary list of a greater number of scientific societies than that of any other naturalist or philosopher. It was Humboldt himself who, many years ago, saluted Brown with the appellation of Botanicormn facile Princeps ; and the universal consent of botanists recognized and confirmed the title. However the meed of merit in science should be divided between the most profound, and the most active and prolific minds, — between those who divine and those who elaborate, — it will probably be conceded by all, that no one since Linnaeus has brought such rare sagacity to bear upon the structure, and especially upon the ordinal characters and natural affinities of plants, as did Robert Brown. True, he was fortunate in his time, and his opportunities. Men of great genius, happily, often are, or appear to be, through their power of turning opportunities to good account. The whole herbaria of Sir Joseph Banks, and the great col- lections which he himself made ai'ound the coast of Australia, in Flin- ders's expedition, and which he was able to investigate upon the spot during the four years devoted to this exploration, opportunely placed in 230 .PROCEEDINGS OF THE AMERICAN ACADEMY Brown's able hands as it were the vegetation of a new world, as rich as it was peculiar, — just at the time, too, when the immortal work of Jussieu had begun to be appreciated, and the European and other ordinary forms of vegetation had begun to be understood in their natural relations. The new, various, and singular types which render the botany of New Holland so unlike all other, Mr. Brown had to compare among themselves, — to unravel their intricacies with scarcely a clew to guide hini, except that which his own genius enabled him to construct in the process of the research, — and to bring them harmo- niously into the general system of botanical natural alliance as then understood, and as he was himself enabled to ascertain and display it. It was the wonderful sagacity and insight which he evinced in these investigations, which, soon after his return from Austraha, revealed the master mind in botanical science, and erelong gave him the position of almost unchallenged eminence, which he retained, as if without effort, for more than half a century. The common observer must wonder at this general recognition, during an era of great names and unequalled activity, of a claim so rarely, and as it were so reluctantly, asserted. For brief and com- paratively few — alas ! how much fewer than they should have been ! — are Mr. Brown's publications. Much the largest of them is the Pro- dromus of the Flora of New Holland, issued fifty years ago, which begins upon the one hundred and forty-fifth page, and which stopped short at the end of the first volume. The others are special papers, mostly of small bulk, devoted to the consideration of a particular plant, or a particular group or small collection of plants. But their simple titles seldom foreshow the full import of their contents. Brown de- lighted to rise from a special case to high and wide generalizations ; and was apt to draw most important and always irresistible conclusions from some small, selected data, or particular point of structure, which to ordinary apprehension would ajipear wholly inadequate to the purpose. He had unequalled skill in finding decisive instances. So all his discoveries, so simply and quietly announced, and all his notes and observations, sedulously reduced to the briefest expression, are fertile far beyond the reader's expectation. Cautious to excess, never sug- gesting a theory until he had thoroughly weighed all the available objections to it, and never propounding a view which he did not know how to prove, perhaps no naturalist ever taught so much in writing ( OF ARTS AND SCIENCES. 231 SO little, or made so few statements that had to be recalled, or even recast ; and of no one can there be a stronger regret that he did not publish more. With this character of mind, and while carefully sounding his way along the deep places of a science the philosophy and grounds of which were forming, day by day, under his own and a few contemporary hands, Brown could not have been a voluminous writer. He could never have undertaken a Systema Regni Vegetahilts, content to do his best at the moment, and to take upon trust what he had not the means or the time to verify, — like his contemporary, DeCandoUe, who may worthily be compared with Brown for genius, and contrasted with him for the enthusiastic devotion which constantly impelled him to publica- tion, and to lifelong, unselected, herculean labor, over all the field, for the general good. Nor could Brown ever be brought to undertake a Genera Planta- rum, like that of Jussieu ; although his favorable and leisurely position, his vast knowledge, his keen discrimination, and his most compact mode of expression, especially indicated him for the task. Evidently, his influence upon the progress of Botany might have been greater, or at least more immediate and more conspicuous. Yet, rightly to estimate that influence now, we have only to compare the Genera Planiarum of Endlicher with that of Jussieu, — separated as they are by the half- century which coincided with Brown's career, — and mark how largely the points of difierence between the two, so far as they represent inquiry, and genuine advancement in the knowledge of floral struc- ture, actually originated with him. Still, after making due allowance for a mind as scrupulous and cautious as it was clear and profound, also for an unusually retiring disposition, which even in authorship seems to have rendered him as sedulous to avoid publicity as most writers are to gain it, it must be acknowledged that his retentiveness was excessive ; and that his guarded published statements sometimes appear as if intended — like the anagrams of the older mathemati- cians and philosophers — rather to record his knowledge than to reveal it. But this was probably only in appearance, and rather to be attributed to his sensitive regard for entire accuracy, and his extreme dislike of all parade of knowledge, — to the same peculiarity which every where led him to»condense announcements of great consequence into short paragraphs or foot-notes, and to insert the most important 232 PROCEEDINGS OF THE AMERICAN ACADEMY facts in parentheses, which he who runs over the page may read, indeed, but which only the most learned and the most reflecting will be apt to comprehend. In candor it must be said, that his long career has left some room for the complaint that he did not feel bound to exert fully and continuously all his matchless gifts in behalf of the science of which he was the most authoritative expositor. But if thus in some sense unjust to himself and to his high calling, Brown could never be charged with the slightest injustice to any fellow-laborer. He was scrupulously careful, even solicitous, of the rights and claims of others ; and in tracing the history of any discov- ery in which he had himself borne a part, he was sure to award to each one concerned his full due. If not always communicative, he was kind and considerate to all. To adopt the words of one of his intimate associates, " those who knew him as a man will bear unani- mous testimony to the unvarying simplicity, truthfulness, and benevo- lence of his character," as well as to " the singular uprightness of his judgment." The remaining, and the most illustrious name of all, — and one in its wide renown strongly in contrast with the last, — has only just now been inscribed upon our obituary list. The telegraph of the last week brought to us the painful intelligence that the patriarch of science, the universal Humboldt, died at Berlin on the 6th of May. Born in 1769, a year more prolific in great men than any equal period of all preceding time,* Humboldt had, before the end of the eighteenth century, exhibited qualities of the very highest order, and obtained a place of acknowledged celeb- rity in Europe. This, however, was the mere prelude to his career, for with the close of that century he commenced, with Bonpland, his wonderful exploration of Spanish America, which continued during five years. This journey must be considered in all future time as, substantially, the scientific discovery of Spanish America ; and whether we measure its results by the amount of knowledge through the wide fields of Astronomy, Geography, Geology, Mineralogy, Meteorology, Zoology, Botany, and Political Economy, or the personal qualities by which this knowledge was collected and reduced to its place in the * Napoleon, Wellington, Mehemet Ali, Soult, Lanires, Ney, Castlereagh, Cha- teaubriand, Cuvier, and Humboldt. OP ARTS AND SCIENCES. 233 records of science, we cannot hesitate to place the expedition as amongst the most important and successful ever executed by man. On his return to Europe, in 1805, Humboldt was employed several years in reducing his immense collection of materials to form for publi- cation. From that time to his death, a period of almost half a cen- tury, he resided (except for a short time, in which he made his journey to Northern Asia) in Europe, mostly in France and Germany. The last twelve or fifteen years of this great man were principally employed in the production of his Cosmos, ' — the ci'owning labor of his long life, the harvest of his mature wisdom, — a work that could not have been produced by any other man, simply because no other msm pos- sessed the treasures, or a key to the treasures, of the various knowl- edge contained in it. From his return to Europe to his death, he possessed, indisputably, the fii'st place amongst philosophers, for the vast extent of his acquire- ments. Without doubt, at all times during the present century there have been men much greater than Humboldt in each special depart- ment of science, but no one to compare with him in the number of subjects in which he had but few superiors, — no one who could, like him, bring all the sciences into one field of view, and compare them as one whole, through their relations and dependences. It was probably this extent of knowledge that led him to generalization rather than particular discovery ; to trace connections and relations, rather than to search for new and minute facts or particular laws ; to produce the Cosmos, rather than discover the atomic theory or the cellular forma- tion of organic structures. Many other men have been masters of several specialties. Humboldt alone brought the whole range of the physical and natural sciences into one specialty. We cannot close this brief notice of the character and career of our illustrious associate without one moment's allusion to his amiable moral nature, his love of justice, and his superiority to all merely personal ends. So strong was his desire to give the influence of his high scien- tific position to the cause of civilization and the progress of knowledge, by assisting all applicants for his opinion and advice upon scientific subjects, that he permitted a correspondence to be extorted from him which in his last days became a load too great to be borne, and com- pelled a cry for relief that had hardly subsided when the news of his death reached us. VOL. IV. 30 234 PROCEEDINGS OF THE AMERICAN ACADEMY Such is the faint outline of a man whose name is indelibly written with those who have been most eminent in this wonderful asre of sci- entitle activity. The Academy claims the privilege, in common with the learned societies with which he was associated throughout the civ- ilized world, to express its sorrow for his death, and to offer its tribute of honor to his memory. The Academy now consists of » 153 Resident Fellows, 78 Associate Fellows, and 71 Foreign Honorary Members. Of tlie Foreign Honorary Members 26 belong to the First Class, 26 « « Second Class, and 19 " " Third Class. Of the Associate Fellows, 32 belong to the First Class, 29 " « Second Class, and 17 " « Third Class. Of the 153 Resident Fellows, 45 are ranked in the First Class, 46 « " « Second Class, and 62 « " « Third Class. Their distribution into the several sections need not here be detailed ; for the printed list, newly revised, is just now issued. A clause in the statute. Chap. I. § 2, makes it " the duty of this Council " " to exert its influence to obtain and preserve a due propor- tion in the number of Fellows in each of the Sections." In view of which, the Council venture to call attention to the fact, that the First and Second Classes of the Resident Fellows are as nearly equal as possible, while the Third Class, instead of one third, now comprises two fifths of the Resident Fellows. Professor Agassiz then said : — "Gentlemen, — I have been requested to present on this occasion some remarks upon the scientific career of Humboldt. So few days have elapsed since the sad news reached our shore, that I have had no time to prepare an elaborate account of that wonderful career, and I am not myself in a condition in which I could have done it, being OF ARTS AND SCIENCES. 235 deprived of the use of my eyes, so that I had to rely upon the hand of a friend to make a few memoranda on a slip of paper, which might enable me to present my thoughts in a somewhat regular order. But I have, since the day we heard of his death, recalled all my recollec- tions of him ; and, if you will permit me, I will present them to you as they are now vividly in my mind. " Humboldt — Alexander von Humboldt as he always called himself, though he was christened with the names of Frederick Heinricii Alexander — was born in 1769, on the 14th of Septem- ber, — in that memorable year which gave to the world those philoso- phers, warriors, and statesmen who have changed the face of Science and the condition of affairs in our century. It was in that year that Cuvier and Chateaubriand were also born ; and among the warriors and statesmen, Napoleon and the Duke of Wellington are children of 17 CD ; and it is certainly a year of which we can say that its children have revolutionized the world. Of the early life of Humboldt I know nothing ; and I find no records, except that in his tenth year he lost his father, who had been a major in the army during the Seven Years' "War, and afterwards a chamberlain to the King of Prussia. But his mother took excellent care of him, and watched over his early education. The influence she had upon his life is evident from the fact, that, notwithstanding his yearning for the sight of foreign lands, he did not begin to make active preparations for his travels during her lifetime. In the winter of 1787-88, he was sent to the University of Frankfort on the Oder, to study finances. He was to be a statesman ; he was to enter high offices, for which there was a fair chance, owing to his noble birth and the patronage he could expect at the court. He remained, however, but a short time there. " Not finding those studies to his taste, after a semester's residence in the University, we find him again at Berlin, and there in intimate friendship with "Wildenow, then Professor of Botany, and who at that time possessed the greatest herbarium in existence. Botany was the first branch of natural science to which Humboldt paid especial atten- tion. The next year he went to Gottingen, being then a youth of twenty years ; and here he studied Natural History with Blumenbach, and thus had an opportunity of seeing the progress Zoology was mak- ing in anticipation of the great movement by which Cuvier placed that science on a new foundation. For it is an unquestionable fact, that in first presenting a classification of the animal kiogdom based upon a 236 PROCEEDINGS OP THE AMERICAN ACADEMY knowledge of its structure, Blumenbach in a measure anticipated Cuvier; though it is only by an exaggeration of what Blumenbach did, that an unfair writer of later times has attempted to deprive Cuvier of the glory of having accomplished this object upon the broadest pos- sible basis. From Gottingen he visited the Rhine, for the purpose of studying Geology, and in particular the basaltic formations of the Seven Mountains. At Mayence he became acquainted with George Forster, who proposed to accompany him on a journey to England. You may imagine what an impression the conversation of that active, impetuous, and powerful man made upon the youthful Humboldt. They went to Belgium and Holland, and thence to England, where Forster introduced him to Sir Joseph Banks. Thus the cempanions of Captain Cook in his first and second voyages round the world, who were already venerable in years and eminent asspromoters of physical science, not yet established in the popular favor, were the early guides of Humboldt in his aspii-ations for scientific distinction. Yet Hum- boldt had a worldly career to accomplish. He was to be a statesman, and this required that he should go to the Academy of Commerce at Hamburg. He remained there _five months, but could endure it no longer ; and he begged so hard, that his mother allowed him to go to Freyberg and study Geology with Werner, with a view of obtaining a situation in the Administration of Mines. See what combinations of circumstances prepare him for his great career, as no other young man ever was prepared. At Freyberg he received the private instruction of "Werner, the founder of Modern Geology, and he had as his fellow- student no less a man than Leopold von Buch, then a youth, to whom, at a later period, Humboldt himself dedicated one of his works, in- scribing it ' To the Greatest Geologist,' as he was till the day of his recent death. From Freyberg he made frequent excursions into the Hartz and Fichtelgeberg and surrounding regions, and these excur- sions ended in the publication of a small work upon the Subterranean Flora of Freyberg, {^Flora Suhterranea Frihergensis,) in which he described especially those cryptogamous plants, or singular low and imperfect formations, which occur in the deep mines. But here ends his period of pupilage. In 1792 he was appointed an officer of the mines {Oherhergmeister). He went to Baireuth as director of the operations in those mines belonging to the Frankish Provinces of Prussia. Yet he was always wandering in every direction, seeking for information and new subjects of study. He visited Vienna, and there OF ARTS AND SCIENCES. 237 heard of the discoveries of Galvani, with which he made himself familiar ; went to Italy and Switzerland, where he became acquainted with the then celebrated Professors Jurine and Pictet, and with the illustrious Scarpa. He also went to Jena, formed an intimate acquaint- ance with Schiller and Goethe, and also with Loder, with whom he studied Anatomy. From that time he began to make investigations of his own, and these investigations were in a line which he has seldom approached since, being experiments in Physiology. He turned his attention to the newly discovered power, by which he tested the activ- ity of organic substances ; and it is plain, ft-om his manner of treating the subject, that he leaned to the idea that the chemical process going on in the living body of animals furnished a clew to the phenomena of life, if it was not life itself. This may be inferred from the title of the book published in 1797, — Ueber die gereizte Muskel- und Nerven-faser, mit Vermuthtmgen iiber den chemise/ten Process des Lehens, in Thieren und Pfianzen. In these explanations of the phenomena we have the sources of the first impulses in a direction which has been so beneficial in advancing the true explanation of the secondary phenomena of life ; but which, at the same time, in its exaggeration as it prevails now, has degenerated into the materialism of modern investigators. In that period of all-embracing activity, he began to study Astronomy. His attention was called to it by Baron von Zach, who was a prominent astronomer, and at that time Avas actively engaged upon astronomical investigations in Germany. He showed Humboldt to what extent Astronomy would be useful for him, in his travels, in determining the position of places, the altitude of mountains, &c. " So prepared, Humboldt now broods over his plans of foreign travel. He has published his work on the Muscular and Nervous Fibres at the age of twenty-eight. He has lost his mother ; and his mind is now inflamed with an ungovernable passion for the sight of foreign, and especially tropical lands. He goes to Paris to make preparation by securing the best astronomical, meteorological, and surveying instru- ments. Evidently he does not care where he shall go, for on a propo- sition of Lord Bristol to visit Egypt, he agrees to it. The war prevents the execution of this plan, and he enters into negotiations to accompany the projected expedition of Captain Baudin to Australia; but when Bonaparte, bent on the conquest of Egypt, started with a scientific expedition, Humboldt wishes to join it. He expects to be one of the scientific party, and to reach Egypt by way of Barbary. But all these 238 PROCEEDINGS OF TUE AMERICAN ACADEMY plans failing, he goes to Spain with the view of exploring that country, and finding perhaps some means of joining the French expedition in Egypt from Spain. "While in Madrid, he is so well received at the court, — a young nobleman so well instructed has access everywhere, — and he receives such encouragement from persons in high positions, that he turns his thoughts to an exploration of the Spanish Provinces of America. He receives permission not only to visit them, but in- structions are given to the officers of the colonies to receive him every- where and give him all facilities, to permit him to transport his instru- ments, to make astronomical and other observations, and to collect whatever he chooses; and all that only in consequence of the good impression he made when he appeared there, with no other recom- mendation than that of a friend who happened to be at that time Danish Minister to the Court of Madrid. But with these facilities offered to him, he sails in June, 1799, from Corunna, whence he reaches Teneriffe, makes short explorations of that island, ascending the peak, and sails straightway to America, where he lands in Cu- rnana in the month of July, and employs the first year and a half in the exploration of the basin of the Orinoco and its connection with the Amazon. This was a journey of itself, and completed a work of sci- entific importance, establishing the fact that the two rivers were con- nected by an uninterrupted course of water. He established for the first time the fact, that there was an extensive low plain, connected by water, which circled the high table-land of Guiana. It was an impor- tant discovery in Physical Geography, because it changed the ideas about water-courses, and about the distribution of mountains and plains, in a manner which has had the most extensive influence upon the pro- gress of Physical Geography. It may well be said that, after this exploration of the Orinoco, Physical Geography begins to appear as a part of science. From Cumana he makes a short excursion to Ha- vana, and, hearing there of the probable arrival of Baudin on the west coast of America, starts with the intention of ci'ossing at Panama. He arrives at Carthagena, but is prevented by the advance of the season fi*om crossing the Isthmus, and changes his determination from want of precise information respecting Baudin's expedition. He de- termines to ascend the Magdalena River and visit Santa Fe de Bogota, where, for several months, he explores the construction of the moun- tains, and collects plants and animals ; and, in connection with his friend, Bonpland, who accompanied him from Paris, he makes those OF ARTS AND SCIENCES. 239 immense botanical collections which were afterwards published by Bon- pland himself, and by Kunth, after Bonpland had determined on an expedition to South America. In the beginning of 1802 he reaches Quito, where, during four months, he turns his attention to everything worth investigating, ascends the Chimborazo to a height to which no human foot had reached, anywhere ; and having completed this survey, and repeatedly crossed the Andes, he descends the southern slope of the continent to the shore of the Pacific at Truxillo, and, following the arid coast of Peru, he visits finally Lima. I will pass lightly over all the details of his journey, for they are only incidents in that laborious exploration of the country, which is best appreciated by a considera- tion of the works which were published in consequence of the immense accumulation of materials gathered during those explorations. From Lima, or rather from Callao, he sails in 1802 for Guayaquil and Aca- pulco, and reaches Mexico in 1803, where he makes as extensive ex- plorations as he had made in Venezuela and the Andes, and after a stay of about a year, having put all his collections and manuscripts in order, revisits Cuba for a short time, comes to the United States, makes a hurried excursion to Philadelphia and "Washington, where he is wel- comed by Jefferson, and finally returns with his faithful companion Bonpland to France, accompanied by a young Spanish nobleman, Don Carlo de Montufar, who had shared his travels since his visit to Quito. " At thirty-six years of age, Humboldt is again in Europe, with col- lections made in foreign lands, such as had never been brought to- gether before. But here we meet with a singular circumstance. The German nobleman, the friend of the Prussian and Spanish Courts, chooses Paris for his residence, and remains there twenty-two years to work out the result of his scientific labor ; for, since his return, with the exception of short journeys to Italy, England, and Germany, sometimes accompanying the King of Prussia, sometimes alone, or accompanied by scientific friends, he is entirely occupied in scientific labors and studies. So passes the time to the year 1827; and no doubt he was induced to make this choice of a residence by the extraordinary concourse of distinguished men in all branches of science with whom he thought he could best discuss the results of his own observations. I shall pi'esently have something to say about the works he completed during that most laborious period of his life. I will only add now, that in 1827 he established himself in Berlin, having been urged of late by the King of Prussia again and again to return to his native 240 PROCEEDINGS OF THE AMERICAN ACADEMY land. And there he delivered a series of lectures preparatory to the publication of Cosmos ; for in substance, even in form and arrangement, these lectures, of which the papers of the day gave short accounts, are a sort of prologue to the Cosmos, and a preparation for its publication. " In 1829, already sixty years of age, he undertakes another great journey. He accepts the invitation of the Emperor Nicholas to visit the Ural Mountains, with a view of examining the gold-mines and localities where platina and diamonds had been found, to determine their geological relations. He accomplished the journey with Ehren- berg and Gustavus Rose, who published the result of their mineralogi- cal and geological survey in a work of which he is the sole author ; while Humboldt published, under the title of Asiatic Fragments of Geology and Climatology, his observations of the physical and geo- graphical features made during that journey. But he had hardly returned to Berlin when, in consequence of the Revolution of 1830, he was sent by the King of Prussia as extraordinary ambassador to France, to honor the elevation of Louis Philippe to the throne. Hum- boldt had long been a personal friend of the Orleans family, and he was selected as ambassador on that occasion on account of these per- sonal relations. From 1830 to 1848, he lived alternately in Berlin and in Paris, spending nearly half the time in Paris and half the time in Berlin, with occasional visits to England and Denmark ; publishing the results of his investigations in Asia, making original investigations upon various things, and especially pressing the establishment of mag- netic observatories, and connected observations all over the globe. He obtained the co-operation of the Russian government and that of the government of England ; and at that time those observatories in Australia and in the Russian Empire to the borders of China were established, which have led to such important results in our knowledge of terrestrial magnetism. Since 1848, he has lived unin- terruptedly in Berlin, where he published, on the anniversary of his eightieth year, a new edition of those charming first flowers of his genius, his Views of Nature, the first edition of which was published in Germany in 1808. This third edition appeared with a series of new and remodelled annotations and explanations ; and that book in which he first presented his views of nature, in which he drew those vivid pictures of the physiognomy of plants, and of their geographical dis- tribution, is now revived and brought up to the present state of science. The 'Views of Nature' is a work which Humboldt has always cherished, OF ARTS AND SCIENCES. 241 and to which in his Cosmos he refers more frequently than to any- other work. It is no doubt because there he had expressed his deepest thoughts, his most impressive views, and even foreshadowed those inti- mate convictions which he never expressed, but which he desired to record in such a manner that those that can ' read between the hues ' might find them there ; and certainly there we find them. His aspira- tion has been to present to the world a picture of the physical world, from which he would exclude everything that relates to the turmoil of human society and to the ambitions of individual men. A life so full, so rich, is worth considering in every point of view, and it is most in- structive to see with what devotion he pursues his work. As long as he is a student, he is really a student, and learns faithfully, and learns everything he can reach. And he continues so for t.wenty-thi'ee years. He is not one of those who are impatient to show that they have some- thing in them, and with premature impatience utter their ideas, which become insuperable barriers to independent progress in later life. Slowly, and confident of his sure progress, he advances, and while he learns, he studies also independently of those who teach him. He makes his experiments, and to make them with more independence he seeks for an ofiicial position. During five yeai's he is a business man, in a station which gives him leisure. He is Superintendent of the Mines, but a Superintendent of the Mines who can do much as he pleases ; and while he is thus ofiicially engaged journeying and super- intending, he prepares himself for his independent researches. And yet it will be seen he is thirty yeai's of age before he enters upon his American travels, those travels which must be said to have been the greatest undertaking ever carried to a successful issue, if judged by the results ; they have as completely changed the basis of physical science, as the revolution which took place in France about the same time has changed the social condition of that land. Having returned from these travels to Paris, a new period of his life begins, — that of concentrated critical studies. He works up his materials then with untiring ardor and devotion ; and he is not anxious to appear to have done it all himself. Oltmanns is called to his aid to revise his astronomical observations and his barometrical measurements, by which he has de- termined the geographical position of seven hundred different points, and the altitude of more than four hundred and fifty of them. " The large collection of plants which Bonpland had begun to VOL. IV. 31 242 PROCEEDINGS OP THE AMERICAN ACADEMY illustrate, but of which his desire of seeing the tropics again has pre- vented the completion, he intrusts to Kunth. He has also brought home animals of different classes, and distributes them among the most eminent zoologists of the day. To Cuvier he intrusts the inves- tigation of that remarkable Batrachian, the Aeolotel, the mode of development of which is still unknown, but which remains in its adult state in a condition similar to that of the tadpole or the frog during the earlier period of its life. Latreille describes the insects, and Valen- ciennes the shells and the fishes ; but yet, to show that he might have done the work himself, he publishes a memoir on the anatomical structure of the organs of breathing in the animals he has preserved, and another upon the tropical monkeys of America, and another upon the electric properties of the electric eel. But he was chiefly occupied with investigations in Physical Geography and Climatology. The first work upon that subject is a dissertation on the geographical dis- tribution of plants, published in 1817. Many botanists and travellers had observed, that in different parts of the world there are plants not found in others, and that there is a certain arrangement in that distri- bution ; but Humboldt was the first to see that this distribution is connected with the temperature of the air, as well as with the altitudes of the surface on which they grow, and he systematized his researches into a general exposition of the laws by which the distribution of plants is regulated. Connected with this subject he made those ex- tensive investigations into the mean temperature of a large number of places on the surface of the globe, which led to the drawing of the isothermal lines so important in their influence in shaping Physical Geography and giving accuracy to the mode of representing natural phenomena. Before Humboldt we had no graphic representation of complex natural phenomena which made them easily comprehensi- ble, even to minds of moderate cultivation. He has done that in a way which has circulated information more extensively, and brought it to the apprehension more clearly, than it could have been done by any other means. " It is not too much to say, that this mode of representing natural phenomena has made it possible to introduce in our most elementary works the broad generalizations derived from the investigations of Humboldt in South America ; and that every child in our schools has his mind fed from the labors of Humboldt's brain, wherever geog- OF ARTS AND SCIENCES. 243 rapliy is no longer taught in the old routine. Having completed his American labors, Humboldt published three works, partly connected with his investigations in America, and partly with his further studies in Europe since his return ; and, among others, a book which first appeared as a paper in the Dictionnaire des Sciences Natu- reJles, but of which separate copies were printed under the title of Essai stir la Constitution des Roches dans le deux Hemispheres. This work has been noticed to the extent which it deserved by only one geologist, Elie de Beaumont. No other seems to have seen what there is in that paper, for there Humboldt shows for the first time, that, while organic nature is the same all the world over, — granite is granite, and basalt is basalt, and limestone and sandstone limestone and sandstone, wherever found, — there is everywhere a difference in the organized world, so that the distribution of animals and plants represents the most diversified aspects in different countries. This at once explains to us why physical sciences may make such rapid progress in new countries, while Botany and Zoology have to go through a long process of preparation before they can become popular in regions but recently brought under the beneficial influence of civili- zation. For while we need no books of our own upon. Astronomy, Chemistry, Physics, and Mineralogy, we have to grope in the dark while studying our plants and animals, until the most common ones become as familiar to us as the common animals of the fields in the old countries. The distinction which exists in the material basis of scientific culture in different parts of the world is first made evident by this work. By two happily chosen words, Humboldt has presented at once the result of our knowledge in Geology at the time, in a most remarkable manner. He speaks thex-e of ' independent formations.' Who, before Humboldt, thought there were successive periods in the history of our globe, which were independent one of the other ? There was in the mind of geologists only a former and a present world. Those words expressing the thought, and expressing it in reference to the thing itself, for the first time occur in that memoir ; thus putting an end to those views prevailing in Geology, according to which the age of all the rocks upon the earth can be determined by the mineralogical character of the rocks appearing at the surface. The different geological levels at which rocks belonging to the same period have been deposited, but which have been disturbed by subse- quent revolutions, he happily designated as ' geological horizons.' 244 PKOCEEDINGS OF THE AMERICAN ACADEMY "It was about the time he was tracing these investigations that he made his attempt to determine the mean altitude of the continents above the sea. Thus far geographers and geologists had considered only the heights of mountain chains, and the elevation of the lower lands, while it was Humboldt who first made the distinction between mountain chains and table-lands. But the idea of estimating the average elevation of continents above the sea had not yet been enter- tained ; and it was again Humboldt who, from the data that he could command, determined it to be at the utmost nine hundred feet, assum- ing all irregularities to be brought to a uniform level. His Asiatic travels gave him additional data to consider these depressions and swellings of continents, when discussing the phenomena of the depres- sion of the Caspian Sea, which he does in a most complete manner. " There is a fulness and richness of expression and a substantial power in his writing, which are most remarkable, but which render his style somewhat involved. He has aimed to present to others what nature presented to him, — combinations interlocked in such a compli- cated way as hardly to be distinguishable, and his writings present something of the kind. You see his works, page after page, running into volumes without division into chapters or heads of any sort ; and so conspicuous is that peculiarity of style in his composition, that I well remember hearing Arago turning to him, while speaking of com- position, and saying : ' Humboldt, you don't know how to write a book ; you write without end, but that is not a book, — it is a picture without a frame.' Such an expression of one scientific man to another, without giving offence, could only come from a man so intimately asso- ciated as Arago was with Humboldt. And this leads me to a few additional remarks upon his character and social relations. Humboldt was born near the court. He was brought up in connection with courtiers and men in high positions in life. He was no doubt imbued with the prejudices of his caste. He was a nobleman of high descent. And yet the friend of kings was a bosom friend of Arago, and he was the man who could, after his return from America, refuse the highest position at the Court of Berlin, that of Minister of Public Instruc- tion, preferring to live in a modest way in Paris, in the society of all those illustrious men who then made Paris the centre of intel- lectual culture. It was there that he became one of that Societe d'Arcueil, composed of all the great men of the day, to which the paper on Isothermal Lines was presented, and by which it was printed, OF ARTS AND SCIENCES. 245 as all papers presented to it were, for private distribution. But from his intimate relations especially to the Court of Prussia, some insinua- tions have been made as to the character of Humboldt. They are as unjust as they are severe in expression. He was never a flatterer of those in power. He has shown it by taking a prominent position, in 1848, at the head of those who accompanied the victims of the Revo- lution of that year to their last place of rest. But while he expressed his independence in such a manner, he had the kindliest feelings for all parties. He could not oiFend, even by an expression, those with whom he had been associated in early life ; and I have no doubt that it is to that kindliness of feeling we must ascribe his somewhat indis- criminate patronage of aspirants in science, as well as of men who were truly devoted to its highest aims. He may be said to have been, especially in his latter years, the friend of every cultivated man, wish- ing to lose no opportunity to do all the good of which he was capable ; for he had a degree of benevolence and generosity which was un- bounded. I can well say that there is not a man engaged in scientific investigations in Europe, who has not received at his hands marked tokens of his favor, and who is not under deep obligations to him. May I be permitted to tell a circumstance of this kind which is per- sonal to me, and which shows what he was capable of doing without giving an opportunity of mentioning it. I was only twenty-four years of age when in Paris, whither I had gone with means given to 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 asked me what was the cause of my depressed feelings ; and I told him that 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 before me as distinctly as if I held the paper in my hand. It said : — " ' My friend, I hear that you intend leaving Paris in consequence of some embarrassments. That 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 for £ 50. It is a loan which you may repay when you can.' " Some years afterwards, when I could have repaid him, I wrote, asking for the privilege of remaining for ever in his debt, knowing that 246 PROCEEDINGS OF THE AMERICAN ACADEMY this request would be more consonant to his feelings than the recovery of the money, — and I am now in his debt. What he has done for me, I know he has done for many others, in silence and unknown to the world. "I wish I could go on to state something more of his character, his conversational powers, &c., but I feel that I am not in a condition to speak of them. I will only say, that his habits .were very pe- culiar. He was an early riser, and yet he was seen at late hours in the saloons in different parts of Paris. From the year 1830 to 1848, while in Paris, he had been charged by the King of Prussia to send reports upon the condition of things there. He had before prepared for the Iving of Prussia a report on the political condition of the Spanish colonies in America, which no doubt had its influence afterwards upon the recognition of the independence of those colonies. The importance of such reports to the government of Prussia may be inferred from a perusal of his political and statistical essays upon Mexico and Cuba. It is a circumstance worth noticing, that, above all great powers, Prussia has more distinguished scientific and literary men among her diplomatists than any other state. And so was Hum- boldt actually a diplomatist in Paris, having been placed in that position, not from choice, but in consequence of the benevolence of the King, who desired to give him an opportunity of being in Paris as often and as long as he chose. " But from that time there were two men in him, — the diplomatist, living in the Plotel des Princes, and the naturalist, who roomed in the Rue de la Harpe, in a modest apartment in the second story, where his scientific friends had access to him every day before seven. After that he was frequently seen working in the library of the Institute, until the time when the Grand Seigneur made his appearance at the Court or in the saloons of Paris. " The influence he has exerted upon the progress of science is incal- culable. I need only allude to the fact that the Cosmos, bringing every branch of natural science down to the comprehension of all classes of students, has been translated into the language of every civilized na- tion of the world, and gone through several editions. With him ends a great period in the history of science, a period to which Cuvier, La- place, Arago, Gay-Lussac, DeCandolle, and Robert Brown belonged, and of whom only one is still living, — the venerable Biot. " Gentlemen, I present the following resolutions for your considera- tion : — OF ARTS AND SCIENCES. 247 " Resolved, That the members of the American Academy of Arts and Sciences have heard with deep sorrow of the loss the world has sustained in the recent death of their late foreign associate, the Baron Alexander von Humboldt. " Resolved, That they recognize in their late associate a most illus- trious example of devotion to the noblest objects and pursuits. From early life to the last days of an old age protracted far beyond the usual limit of intellectual activity, he has been vigorously and assidu- ously engaged in advancing, by his own labors, and by the impulse and support he has given to the labors of others, the boundaries of human knowledge. The results of his all-comprehending researches he has presented to the world in suiih simple and attractive forms as to render them the common property of mankind. To the loftiest gifts of intel- lect he has added never-failing generosity, disinterestedness, and humanity. His memory, therefore, deserves and will receive the ven- eration of all future ages. "While we grieve that the world is deprived of the light of his presence, we rejoice that his vast powers remained undiminished to the last, and that we may pronounce his life eminently happy, since he has enjoyed, during its long course, the warmest affec- tion of all who have known him, and has been graciously permitted to close it in the midst of the sublimest occupations, and without suffering calamity." The resolutions were unanimously passed. The annual election was held, and the following officers were chosen for the ensuing year : — Jacob Bigeloav, President. Daniel Tread well, Vice-President. Asa Gray, Corresponding Secretary. S. L. Abbot, Recording Secretary. J. P. Cooke, Librarian. Edward Wigglesworth, Treasurer. Council. J. I. Bowditch, y Joseph Lovering, > of Class I. E. N. Horsford, ) Louis Agassiz, Jeffries Wyman, S of Class II. J. B. S. Jackson, 248 . PROCEEDINGS OF THE AMERICAN ACADEMY James Walker, ^ Henry W. Torrey, ( of Class III. Robert C. Winthrop, ) The Standing Committees, nominated by the President, were elected as follows : — Rmnford Committee. Eben N. Horsford, Joseph Lovering, Daniel Treadwell, Henry L. Eustis, Morrill Wyman. Committee of Publication. Joseph Lovering, Jeffries Wyman, Cornelius C. Felton. Committee on the Library. A. A. Gould, W. B. Rogers, George P. Bond. Committee to Audit Treasurer's Accounts. Thomas T. Bouve, C. E. Ware. Committee of Finance. Jacob Bigelow, Edward Wigglesworth, j. i. bowditch. M. LiouviLLE, of Paris, was elected a Foreign Honorary Member, to fill the vacancy in Class I. Section 1 (Mathe- matics), caused by the death of the late M. Cauchy. The Hon. John Henry Clifford, of New Bedford, and the Hon. Emory Washburn, of Cambridge, were elected Fellows, in Class IH. Section 1 (Philosophy and Jurisprudence). Professor Gray communicated (by title), — " Characters of some New Musci and Hepaticce, collected by Charles Wright in the North Pacific Exploring Expedi- tion, under the command of Captain John Rodgers. By William S. Sullivant and Leo Lesquereux." " Characters of New Algas of the same Expedition. By Professor William H. Harvey." OF ARTS AND SCIENCES. 249 DONATIONS TO THE LIBRARY. FROM APRIL 16, 1858, TO APRIL 15, 1859. Editors of the American Journal of Science and Arts. Vol. L. General Index to Forty-nine Volumes. 1819 - 45. 8vo. New Haven. 1847. Academy of Sciences, Arts, and Belles-Lettres, Dijon. Memoires. Annees 1810, 1818, 1823, 1825 - 27, 1833, 1837 - 40, et Tome V. 2« Serie. 1856. 9 vols. 8vo. Dijon. 1810-40, 1856. Imperial Society of Natural Sciences, Cherbourg. Memoires. Tome IV. 8vo. Paris et Cherbourg. 1856. L, Nodot. Description d'un Nouveau Genre d'Edente Fossile, renfermant plusieurs Especes voisines du Glyptodon. Atlas. Ouvrage publie par I'Acad. des Sciences, Arts, et Belles-Lettres de Dijon. 4to. Dijon. Imperial Academy of Sciences, Vienna. Denkscbriften. Phil.-Hist. Classe, Band VIII. Math.-Natur. Classe, Band Xin. 4to. Wien. 1857. Sitzungsbericbte. Math.-Natur. Classe, Band XXIII. Heft 2 ; XXIV. Heft. 1 und 2. Phil.-Hist. Classe, Band XXIII. Heft. 1-4. 8vo. Wien. 1857. Royal Danish Academy. Oversigt over det Kgl. Danske Videnskabernes Selskabs Forhand- linger i Aaret 1856, 1857. 8vo. Kjobenhavn. Skrifter 5'^ Reekke, Histor og Philos. Afdeling. 2"''^ Binds Forste Hefte, og 2"'^^ Hefte. 4to. Kjobenhavn. 1856-57. Supplement aux Tables du Soleil de MM. P. A. Hansen et C. F. K. Olufsen, par P. A. Hansen. 4to pamph. Copenhague. 1857. Royal Society of Northern Antiquaries. Atlas de I'Archeologie du Nord, representant des Echantillons de I'Age de Bronze et de I'Age de Fer. Public par la Soc. Roy. des Antiq. du Nord. 1 vol. 8vo. Copenhague. 1857. Sur la Construction des Salles dites des Geants. Par S. M. Le Roi Frederic VII. de Danemark. 8vo pamph. Copenhague. 1857. VOL. IV. 32 250 PROCEEDINGS OF THE AMERICAN ACADEMY Cabinet d'Antiquitcs Americaines a Copenhague. Rapport Ethno- grapliique par C. C. Rafn. 8vo pamph. Copenhague. 1858. Observatory of Breslau. Grundziige der Schlessischen Klimatologie Aus den von der Schlessisclien Gesellschaft fiir vaterlandisclie Cultur seit dem Jahre 1836 veranlassten und einigen alteren Beobachtungsreihen ermittelt und nacli den in der Jaliren 1852 - 55 ausgefuhrten Rech- nungen der Herren W. Gunther, R. BUttner, und H. v. Rotbkirch zusammengestelt und fur den Druck vorbereitet von Dr. J. G. Galle, Director der Stern warte 4to pamph. Breslau. 1857. Hon. Charles Sumner. United States Naval Astronomical Expedition to the Southern Hemisphere, during the Years 1849, -50, -51, -52. Vol. VI. Mag- netical and Meteorological Observations under the Direction of Lieu- tenant J. M. Gilliss, LL. D., Superintendent. 4to. "Washington. 1856. [Ex. Doc] Report of the Superintendent of the Coast Survey, showing the Progress of the Survey during the Year 1855. 1 vol. 4to. Wash- ington. 1856. [Ex. Doc] Report of the Superintendent of the Coast Survey, showing the Progress of the Survey during the Year 1856. 1 vol. 4to. Wash- ington. 1857. [Ex. Doc] Map of the Patuxent and St. Mary's Rivers, Maryland. From Sui'veys by Major J. J. Abert, Topographical Engineers, and Major J. Kearney, Topographical Engineers, in 1824. Washington, 1857. Report on the United States and Mexican Boundary Survey made under the Direction of the Secretary of the Interior, by Wil- liam H. Emory, Major First Cavalry and United States Commis- sioner. Vol. I. 4to. Washington. 1857. [Ex. Doc] Report of the Secretary of the Treasury on the Construction and Distribution of Weights and Measures. 1 vol. 8vo. Washington. 1857. [Ex. Doc] United States Naval Astronomical Expedition to the Southern Hemisphere, during the Years 1849, -50, -51, -52. Vol. III. Observations to determine the Solar Parallax. By Lieut. J. M. Gil- liss, Superintendent. 1 vol. 4to. Washington. 1856. [Ex. Doc] Report of the Commissioner of Patents for the Year 1857. Arts and Manufactures. 3 vols. 8vo. Washington. 1858. [Ex. Doc] OF ARTS AND SCIENCES. 251 Report of the Commissioner of Patents for the Year 1857. Agriculture. 1 vol. 8vo. Washington. 1858. [Ex. Doc] Samuel Nicolson. The Nicolson Pavement, invented by Samuel Nicolson of Boston, Mass. 8vo pamph. Boston. 1855. Peat Coal. Its Value to the Northern and Northeastern States. 4to pamph. Boston. 1857. Chicago Historical Society. Illinois Geological Survey. Abstract of a Report on Illinois Coals, etc. 8vo pamph. Chicago. 1858. Dr. Nicolas B. L. Manzini. Plistoire de I'lnoculation Preservative de la Fievre Jaune. 1 vol. 8vo. Paris. 1858. John George Metcalf, M. D. The Study and Practice of Midwifery. A Discourse read before the Massachusetts Medical Society at its Annual Meeting in Boston, May 28, 1856. 8vo pamph. Boston. 1856. Royal Academy of Sciences, Ainsterdatn. Verslagen en Mededeelingen der Konink. Akad. van Wetten. — Afd. Natuurkunde. Deel V. Stuk 2, 3; Deel VL Stuk 1-3; Deel VII. Stuk 1 - 3. — Afd. Letterkunde. Deel II. Stuk 2 - 4 ; Deel III. Stuk 1 - 3. 8vo. Amsterdam. 1856-58. Verhandelingen. Deel IV. - VI. 4to. Amsterdam. 1857 - 58. Jaarboek van Apx'il, 1857 — April, 1858. 1 vol. 8vo. Amsterdam. 1858. Catalogus van de Boekerij der Kon. Akad Eersten Deel. Eerste Stuk. 8vo pamph. Amsterdam. 1857. Octaviee Querela. Carmen, cujus Auctori Johanni van Leeuwen, e Vico Zegwaart, Certaminis Poetici Prjemium Secundum e Legato Jacobi Henrici Hoeufft adjudicatum est. 8vo pamph. Amstelo- dami. 1857. D. F. L. von Schlechtendal. Linn^ea. Ein Journal fur die Botanik in ihrem ganzen Umfange. Band XXVIII. Heft. 4 - 6 ; XXIX. Heft. 1-3. 8vo. Halle. 1856-57. Royal Irish Academy. Catalogue of the Antiquities of Stone, Earthen, and Vegetable Materials in the Museum of the Royal Irish Academy. By W. R. Wilde, M. R. I. A. 1 vol. 8vo. Dublin. 1857. 252 PROCEEDINGS OF THE AMERICAN ACADEMY .Academie des Sciences de VInstitut Imp. de France. Comptes Rendus. Tom. XL VI. ; Tom. XL VII. Nos. 1 - 20 ; Tom. XL VIII. Nos. 1 et 2. — Table des Matieres du Tomes XLV. et XLVL 4to. Paris. 1858-59. Society of Geography of Paris. Bulletin. 4^"= Serie. Tomes XIV. - XVL 8vo. Paris. 1857- 58. B. F. Shumard and G. G. Sivallow. Description of New Fossils from the Coal Measures of Missouri and Kansas. 8vo pamph. St. Louis, Mo. 1858. Natural History Society of Montreal. Canadian Naturalist and Geologist, and Proceedings of the Nat. Hist. Soc. of Montreal. Vol. IIL and Vol. IV. No. 1. 8vo. Mon- treal. 1858 - 59. Societe Imperiale Zoologique d'Acclimatation. BuUetin. Vol. V. Nos. 3 - 11 ; Vol. VL No. 1. Liste Generale des Membres de la Societe, etc. 8vo. Paris. 1858-59. Society of Arts, Manufactures, and Commerce. Journal of the Society of Arts, and of the Institutions in Union. Vol. V. and Vol. VL Nos. 261 - 305. 8vo. London. 1857 - 58. Royal Institution of Great Britain. Notices of the Meetings of the Members of the Royal Institution of Great Britain. Pt. VIL Nov. 1856 -July, 1857. 8vo pamph. London. 1857. Observatory of Edinhurgh. A Catalogue of 3735 Circumpolar Stars observed at Redhill in the Years 1854, 1855, and 1856, and reduced to Mean Positions for 1855.0. By Richard Christopher Carrihgton (Fellow and Secretary of the Royal Asti'onoraical Society of London). PHnted at the Public Expense, by Order of the Lords Commissioners of the Ad- miralty. 1 vol. fol. London. 1857. Royal University of Nortcny. Forhandlinger ved Skandinaviske Naturforskeres fjerde Mode, i Christiania den 11-18 Juli 1844. 1 vol. 8vo. Christiania. 1847. Observations sur les Phenomenes d'Erosion en Norvege recueil- lies par J. C. Horbye 4to pamph. Christiania. 1857. OF ARTS AND SCIENCES. 253 Quelques Observations de Morphologie Vegetale faites au Jardin Botanique de Christiania par J. M. Norman. 4to pamph. Cbris- tiania. 1857. "Inversio Vesicae Urinarife," og " Luxationes Femorum Con- genita)," hos samme Individ, iagttagne af Lektor Voss 4to pamph. Christiania. 1857. Beschreibung und Lage der Universitats Sternwarte in Christi- ania Herausgegeben von Christopher Hansteen. 4to pamph. Christiania. 1849. Beitra^e zur Lateinischen Grammatik I. Von L. C. M. Aubert, Prof. 8vo pamph. Christiania. 1856. Das Chemische Laboratorium der Universitat Christiania Herausgegeben von Adolph Strecker. Dir. des Laboratoriums. 4to pamph. Christiania. ^ " t. Das Christiania-Silurbecken. Chemisch-Geognostich Untersucht von Tlieodor Kjerulf. 4to pamph. Christiania. 1855. Index Scholarum in Universitate Regia Fredericiana Octogesimo Septimo ejus Semestri Anno 1856 ab Augusto mense Ineunte Habendarum — Octogesimo Nono Anno 1857. 2 pamph. 4to. Christiania. 1856-57. Physikalske Medelelser ved Adam Arndtsen Udgivne af Dr. Christopher Hansteen. 4to pamph. Christiania. 1858. Bidrag til Kundskaben om Middelhavets Littoral-Fauna, Reise- bemaBrkninger fra Italien af M. Sars. II. II. Classis : Hydrome- duso3. 8vo pamph. Bemterkninger angaaende Graptolitherne af Christian Boeck, Prof 4to pamph. Christiania. 1851. Fortsatte lagttagelser over de erratiske Phsenomener af I. C. Horbye. 8vo pamph. Christiania. QEuvres Completes de N. H. Abel, Mathematicien, avec des Notes et Developpements, Redigees par Ordre du Roi, par B. Holm- boe, Prof. Math., etc. Tome Premier et Second. 2 vols, in one. 4to. Christiania. 1839. El Ohservatorio 3Iarma de San Fernando. Almanaque Nautico para el Ano 1859. Calculado de Orden de S. M. en el Ohservatorio de Marina de la Ciudad de San Fernando. 1 vol. 8vo. Cadiz. 1857. Massachusetts Historical Society. Collections. Vol. IV. 4th Series. 8vo. Boston. 1858. 254 PROCEEDINGS OF THE AMERICAN ACADEMY Lieut.-CoJ. J. D. Graham, U. S. A. Report on the Commerce and Improvements of Western Lake Harbors Part I. for 1854 and 1855 ; Part II. for 1856. 1 vol. 8vo. Washington. * 1857. [Ex. Doc] Report on Lake Harbor Improvements for 1857. 1 vol. 8vo. Washington. 1858. [Ex. Doc] Rev. Charles F. Barnard. Proceedings of the Twentj-First Annual Meeting of the Asso- ciation for the Support of the Warren Street Chapel, together with Mr. Barnard's Report. 12mo pamph. Boston. 1858. B. A. Gould, Jr., P. D. Astronomical Journal. Vol. V. Nos. Yl -1^. 4to. Albany. ^ 1858. Defence of Dr. Gould by the Scientific Council of the Dudley Observatoiy. 8vo pamph. Albany. 1858. Dudley Observatory. An Address to the Citizens of Albany, and the Donors and Friends of the Dudley Observatory, on the Recent Proceedings of the Trustees ; from the Committee of Citizens ap- pointed at a Public Meeting held in Albany on the 13th of July, 1858. 8vo pamph. Albany. 1858.- Inauguration of the Dudley Observatory at Albany, August 28, 1856. Second Edition. 8vo pamph. Albany. 1858. The Dudley Observatory and the Scientific Council. Statement of the Trustees. 8vo. Albany. 1858. Reply to the " Statement of the Trustees " of the Dudley Obser- vatory. By Benjamin Apthorp Gould, Jr. 1 vol. 8vo. Albany. 1858. American Antiquarian Society. Proceedings in Boston, April 28, 1858 ; in Worcester, October 21, 1858; in Worcester, February 10, 1859. 3 Pamph. 8vo. Boston. 1858 - 59. Professor William B. Rogers. On Ozone Observations. [From Edin. New Philos. Jour., Vol. VIL N. S.] 8vo. Edinburgh. 1858. Some Experiments on Sonorous Flames, with Remarks on the Primary Source of their Vibration. [From Am. Jour, of Science and Arts, 2d Series, Vol. XXVL, July, 1858.] 8vo. New Haven. 1858. OF ARTS AND SCIENCES. 255 K. K. Geologischen HeicJisanstalf, Wien. Jahrbuch. VII. und VIIL Jahr. 8vo. Wien. 185G-57. Royal Prussian Academy. Abhandlungen der Konigl. Akad. der Wissenschaften zu Berlin. Aus dem Jahr 1856. 1 vol. 4to. Berlin. 1857. Monatsbericht, Jan. - Aug. 1857. 8 nos. 8vo. Berlin. 1857. Royal Society of Sciences, Leipzig. Abhandlungen der Ivon. Sach. Gesell. der Wissenschaften. — Math.-Physisch. Classe. Band IV. pp. 1-252. 8vo. Leipzig. 1857. Berichte. — Math.-Physisch. Classe. 1856, No. 2 ; 1857, Nos. 1 - 3 ; 1858, No. 1. — Philol.-Histor. Classe. 1856, Nos. 3, 4 ; 1857, Nos. 1, 2 ; 1858, No. 1. 8vo. Leipzig. 1857 - 58. Royal Bavarian Academy. Abhandlungen der Math.-Physili. Classe der Konigl. Bayerisch. Akad. der Wissenschaften. Band V. Abth. 2 und 3 ; Band VII. Abth. 1 und 2; Band VIIL Abth. 1. — Philos.-Philol. Classe. Band VII. Abth. 3 ; Band VIIL Abth. 2. 4to. Munchen. 1848 to 1857. Gelehrte Anzeigen. Band XLIV. 4to. Munchen. 1857. Ueber die Physik der Molecularkrafte, Rede in der off. Sitz. der Ivon. Akad. der Wissen. am 28 Mtirz 1857, zu ihrer 98 Stiftungsfeier, vorgetragen von Prof. Dr. Jolly. 4to pamph. Munchen. 1857. Ueber die Griindung der Wissenschaft altdeutscher Sprache und Literatur. Festrede von Dr. Konrad Hofman. 4to pamph. Miinchen. 1857. Ueber den Anbau und Ertrag des Bodens im Konigreiche Bayern, I Abtheilung-Vortrag von Dr. F. B. W. von Hermann. 4to pamph. Miinchen. 1857. Imperial Academy of Sciences, St. Petersburg. Memoires. VI""" Serie. Sciences Mathematiques, Physiques, et Naturelles. Tome VIIL Premiere Partie. Sciences Mathema- tiques et Physiques. Tome VI. 1 vol. 4to. St. Petersbourg. 1857. Compte Rendu de I'Acad. Annde 1856. 1 vol. 8vo. St. Peters- bourg. 1857. Administration of 3fines of Russia. Annales de I'Observatoire Physique Central de Russie. Ann^e 1854, Nos. 1 et 2. 2 vols. 4to. St. Petersbourg. 1856. 256 PROCEEDINGS OF THE AMERICAN ACADEMY Imperial Society of Naturalists, 3Ioscoiv. Bulletin. Annce 1856, Nos. 2-4; Annee 1857, Nos. 1-4; Annee 1858, No. 1. 8vo. Moscou. 1856-58. Observatory of Prague. Magnetische und Meteorologisclie Beobacbtungen zu Prag. 17 und 18 Jabrgang. 2 vols. 4to. Prag. 1857-58. Observatory of KiJnigsberg. Astronomiscbe Beobacbtungen auf der Koniglichen Universitiits- Sternwarte zu Konigsberg. — Abtb. 31 und 33. Folio. Konigs- berg. 1857-58. Society of Sciences, Harlem. Natuurkundige Verbandelingen van de Hollandscbe Maatscbappij der Wetenscbappen te Haarlem. Tweede Verzameling. Dertiende Deel. 4to. Haarlem. 1857. Academia Naturce Curiosorum. Novorum Actorum Acad. Cses. Leopold. Nat. Curios. Vol. XXIII. Supplement. Vol. XXVI. Pars Prior. 4to. Vratislavia3 et Bonnaj. 1856 - 57. Verzeicbniss der Mittglieder zum 1 Februar, 1858. 16mo pampb. Breslau und Bonn. 1858. Observatory of Cambridge. Astronomical Observations made at the Observatory of Cambridge, by tbe Rev. James Cballis, M. A., F. R. S. Vol. XVIII. For tbe Years 1849-50 and 1851. 4to. Cambridge. 1857. Linnean Society of London. Transactions. Vol. XXII. Part 2. 4to. London. 1857. Journal of tbe Proceedings. Botany. Vol. I. No. 4 ; Vol. II. Nos. 5 and 6. — Zoology. Vol. I. No. 4; Vol. II. Nos. 5 and 6. 8vo. London. 1857. List of tbe Society for 1857. 8vo pampb. Address of Thomas Bell, Esq., F. R. S., etc., tbe President. Read at the Anniversary Meeting of the Linnean Society on JMon- day, May 25, 1857. 8vo pampb. London. 1857. Imperial Academy of Sciences, BeUes-Lettres, and Arts, Lyon. M^moires. Classe des Sciences (Nouv. Ser.) Tome II. 1852. Classe des Lettres (N. S.) Tome 11. 1853. 8vo. Lyon. 1852-53. Linnean Society of Lyon. Annales. Ann^e 1852-53 (N. S.) Tome L 8vo. Lyon. 1855. OF ARTS AND SCIENCES. 257 Elias Fries. Monographia Hymenomycetum Sueciae. Vol. I. Sistens Agaricos, Coprinos, Bolbitios. 8vo. Upsalige. 1857. Hon. Henry Wilson. Report of the Superintendent of tlie Coast Survey, showing the Progi-ess of the Survey during the Year 1856. 1 vol. 4to. Wash- ington. 1856. [Ex. Doc] Theodorus Magnus Fries. De Stereocaulis Pilophoris Commentatio 8vo pamph. Upsalioe. 1857. Salem Athenceum. A Catalogue of the Library of the Salem Athenfcum in Salem, Massachusetts, to which is prefixed a Brief Historical Account of the Institution, with its Charter and By-Laws. 8vo pamph. Boston. 1858. Academy of Science, St. Louis. Transactions. Vol. L No. 2. 8vo. St. Louis. 1858. Academy of Natural Sciences, Philadelphia. Proceedings. 1858, pp. 89 - 128, 177 - 184 ; 1859, pp. 45 - 84. 8vo. Philadelphia. 1858 - 59. Journal. New Series, Vol. IV. Pt. 1. 4to. Philadelphia. 1858. Samuel Kneeland, Jr., M. D. Institutiones Chemiae Pud. August. Vogel, M. D., Prof etc. 1 vol. 16mo. Francofurti et Lipsias. 1762. City of Boston. Proceedings at the Dedication of the Building for the Public Li- brary of the City of Boston, January 1, 1858. 1 vol. 8vo. Boston. 1858. Professor Asa Gray. Transactions of the Philosophical Society of Victoria Including the Papers and Proceedings for the Past Year, ending in July, 1855. Vol. I. 8vo. Melbourne. 1855. Lieut. J. 3L Gilliss. United States Naval Astronomical Expedition to the Southern Hemisphere, during the Years 1849 - 52. Vol. III. Observations to determine the Solar Parallax. By Lieut. J. M. Gilliss, LL. D., Superintendent. 1 vol. 4to. Washington. 1856. [Ex. Doc] VOL. IV.- 33 258 PROCEEDINGS OF THE AMERICAN ACADEMY State of Ifassachiisetts. Public Documents of Massachusetts ; being the Annual Reports of various Public Officers and Institutions for the Year 1857 ; to- gether with the Declaration of Independence, the Constitution of the United States, and the Constitution of Massachusetts. 1 vol. 8vo. Boston. 1858. Acts and Resolves passed by the General Court of Massachusetts, in the Year 1858 ; together with the Messages, Changes of Names of Persons, &c. 1 vol. 8vo. Boston. 1858. 3Iercantile Library Association of the City of New Yorh. Thirty-Seventh Annual Report of the Board of Direction May, 1858. 8vo pamph. New York. Commodore Thomas J. Page, U. S. N. Track Survey of the River Parana. Sheets No. 3-7 and 9. — Reference Chart to the Track Survey of the Tributaries of Rio La Plata. Track Survey of the River Uruguay, &c. Sheets Nos. 1, 2, 8. Surveyed by Commodore Thomas J. Page, United States Steamer Water-Witch, 1855. Map of the Basin of La Plata, based upon the Results of the Expedition under the Command of Thomas J. Page, U. S. N. 11 Charts. New York. Albany Institute. Transactions. Vol. IV. Part 1. 8vo. Albany. 1857. New York State Library. Catalogue of Maps, Manuscripts, Engravings, Coins, &c. Vol. HL 8vo. Albany. 1857. Hon. Joseph Holt. Report of the Commissioner of Patents for the Year 1856. Arts and Manufactures. 3 vols. 8vo. Washington. 1857. Professor James P. Espy. Message from the President of the United States, communicating, in Compliance with a Resolution of the Senate of July 24, 1854, the Fourth Meteorological Report of Professor James P. Espy. 1 vol. 4to. Washington. 1857. [Ex. Doc] William Sharswood, Esq. Corpus Grammaticorum Latinorum Veterum Collegit Auxit Re- censuit ac Potiorem Lectionis Varietatem Adjecit Fridericus Linde- mannus Sociorum Opera Adjutus. 4 volumes in 3. 4to. Lipsiae. 1831. OF ARTS AND SCIENCES. 259 Museum Wormianum seu Historia Eerum Rariorum, tarn Natu- ralium, quam Artificialium, tain Domesticarum, quam Exoticarum, qua3 HafnifB Danorum in ffidibus Authoris servantur, Adornata ab Olao Worm. Med. Doct. & in Regia Hafniensi Academia, olim Professore publico. 1vol. Folio. Amstelodami. 1655. Report of the Council of the British Meteorological Society. Read at the Fifth Annual General Meeting, May 22, 1855. 8yo pamph. London. Address delivered at the University of Pennsylvania, before the Society of the Alumni, on the Occasion of their Annual Celebration, December 10,1856. By George Sharswood, LL. D. 8vo pamph. Philadelphia. 1857. The Interpretation of the Astronomical Indications of Virgil, con- sidered and adapted to common usage and common sense. By a Member of the British Association. 8vo pamph. London. 1851. The Works of WiUiam Smith, D. D., Late Provost of the College and Academy of Philadelphia. 2 vols. 8vo. Philadelphia. 1807. Town Talk, The Fish Pool, The Plebeian, The Old Whig, The Spinster, &c. By the Authors of the Tatler, Spectator, and Guar- dian. 1 vol. 12mo. Dublin. 1790. A Short History of the Electrical Clocks, with Explanations of their Principles and Mechanism, &c. By Alexander Bain. 8vo pamph. London. 1852. A Few Remarks on the Present State and Prospects of Electrical Illumination, &c. By Joseph J. W. Watson, Ph. D., &c. 2d Edition. 1 Pamph. 8vo. London. 1853. Societe d' Agriculture, Sciences, et Arts, de la Sarthe. Analyse des Travaux de la Societe Royale des Arts du Mans, depuis I'Epoque de son Institution, en 1794, jusqu'a la fin de 1819. 1'^ Partie. Sc. Math, et Physiq. 1 vol. 8vo. Mans. 1820. Bulletin. Tome VIIL 1848-49. IP Serie. Tomes L- IV. et V. 1st - 3d Cahier. 6 vols. 8vo. Le Mans. 1849 - 58. Philological Society, London. Proceedings. 1842-56. 9 vols. 8vo. London. 1844-56. Royal Society, London. Philosophical Transactions for the Year 1857. 4to. London. 1858. Proceedings. Vol. VIIL No. 27 ; Vol. IX. Nos. 28 - 31. 8vo. London. 1857 - 58. 260 PROCEEDINGS OF THE AMERICAN ACADEMY Abstracts of the Papers printed in the Philosophical Transactions. Vol. I. 1800-14; Vol. 11. 1815-30. 4to. London. 1832-83. List of Fellows. November 30, 1857. 4to pamph. London. Six Discourses delivered before the Royal Society at their Anni- versary Meetings on the Award of the Royal and Copley Medals. By Sir Humphrey Davy, Bart., President of the Royal Society. 4to pamph. London. 1827. Report on the Adjudication of the Copley, Rumford, and Royal Medals ; and Appointment of the Bakerian, Croonian, and Fair- child Lectures. Compiled by James Hudson, Assistant Secretary and Librarian. 4to pamph. London. 1834. Astronomical and Magnetical and Meteorological Observations made at the Royal Observatory, Greenwich, in the Year 1856 ; under the Direction of George Biddell Airy, Esq., M. A., Astronomer Royal. 1 vol. 4to. London. 1858. Ninth Annual Report to the Council from the Committee of the Royal Museum and Library, Peel Park, Borough of Salford, No- vember, 1857. 8vo pamph. Salford. 1857. K. K. Geographischen Gesellschaft, Wien. Mittheilungen. L Jahr. 1857, Heft 1 und 2; IL Jahr. 1858, Heft 1. 8vo. Wien. Salem Z/yceum. Proceedings upon the Dedication of Plummer Hall at Salem, Oc- tober 6, 1857 ; including Rev. Mr. Hoppin's Address, and Judge White's Memoir of the Plummer Family. 8vo pamph. Salem. 1858. Dr. Carl Friedr. Phil, von Martins. Denkrede auf Johann Salomo Christoph Schweigger. 4to pamph. Munchen. 1858. Ueber die Pflanzen-Namen in der Tupi-Sprache. 4to pamph. Munchen. 1858. Essex Institute. Proceedings. Vol. IL Pt. 1. 1856-57. 8vo pamph. Salem. 1858. L. A. Huguet Latour, Capitaine. Twenty-Seventh Annual Report of the Natural History Society of Montreal, 18 May, 1855; Twenty-Eighth, 19 May, 1856; Twenty-Ninth, 18 May, 1857. 3 Pamph. 8vo. Montreal. 1855-57. OF ARTS AND SCIENCES. 261 Report of Superintendent of Education for Lower Canada for 1855. 1 vol. 8vo. Toronto. 185G. Report on the Exploration of the Country between Lake Supe- rior and the Red River Settlement. 1 vol. 8vo. Toronto. 1858. Report of Walter Shanly, Esq., on the Ottawa Survey. 1 vol. 8vo. Toronto. 1858. Report of the Commissioner of Crown Lands of Canada, for the Year 1857. 1 vol. 8vo. Toronto. 1858. Tables of the Trade and Navigation of the Province of Canada, for the Year 1856. [Compiled from Official Returns.] 1 vol. 8vo. Toronto. 1857. [Legislative Documents.] American PJiilosophical Society. Proceedings. Vol. VI. Nos. 59, 60. 8vo. Philadelphia. 1858 -59. John H. Redfield. Observations in Relation to the Cyclones of the Western Pacific ; embraced in a Communication to Commodore Perry, by William C. Redfield. 4to pamph. Jonathan P. Hall. The Chemical Works of Caspar Neumann, M. D., Professor of Chemistry at Berlin, F. R. S., &c. Abridged and Methodized ; with large Additions By William Lewis, M. B., F. R. S. 2d Edition. 2 vols. 8vo. London. 1773. Elements of the Theory and Practice of Chymistry. Translated from the French of M. Macquer, Member of the R. A. S., and Pro- fessor of Medicine in the University of Paris [By Andrew Reid.] 2d Edition. 2 vols. 8vo. London. 1775.- Dr. Boerhaave's Elements of Chymistry, faithfully abridged from the late genuine Edition. Published and signed by himself at Leyden, to which are added curious and useful Notes, by Edward Strother, M. D. 3d Edition. 1 vol. 8vo. London. 1749. Emporium of Arts and Sciences, conducted by Thomas Cooper, Esq. New Series, Vol. I. Nos. 1 - 3 ; Vol. II. Nos. 1 and 3 ; Vol. IIL Nos. 1 and 3. 8vo. Philadelphia. 1813-14. A Manual of Chemistry, or a Brief Account of the Operations of Chemistry, and their Products. Translated from the French of M. Beaume [By John Aikin.] 1 vol. 12 mo. Warrington. 1778. 262 PROCEEDINGS OF THE ASIERICAN ACADEMY Charles M. Wetherill, Ph. D., M. D. Report on the Chemical Analysis of the White Sulphur Water of the Artesian Well of Lafayette, IncL, with Remarks upon the Nature of Ai-tesian Wells. 8vo pamph. Lafayette, Ind. 1858. Hon. Nathan Appleton. Inti'oduction of the Power-Loom, and Origin of Lowell. 8vo pamph. Lowell. 1858. Smithsonian Institution. Nereis Boreali-Americana : or Contributions to the History of the Marine Alg£e of North America, by William Henry Harvey, M. D., M. R. I. A., F. L. S., &c. Pt. III. Chlorospermete. 4to. Wash- ington. 1858. [Smithsonian Contributions to Knowledge.] Annual Report of the Board of Regents of the Smithsonian In- stitution, showing the Operations, Expenditures, and Condition of the Institution for the Year 1857. 1 vol. 8vo. Washington. 1858. [Pub. Doc] Radcliffe Trustees. Astronomical and Meteorological Observations made at the Rad- cliffe Observatory, Oxford, in the Year 1856, under the Superin- tendence of Manuel J. Johnson, M. A., Radcliffe Observer. Vol. XVIL 8vo. Oxford. 1858. British Association for the Advancement of Science. Report of the Twenty-Seventh Meeting, held at Dublin in Au- gust and September, 1857. 1 vol. 8vo. London. 1858. Imperial Academy of Sciences, Arts, and Belles-Lettres, Caen. Memoires. 1858. 1 vol. 8vo. Caen. 1858. Royal Academy of Sciences, Turin. Memorie, Serie Seconda. Tomo XVIL 4to. Torino. 1858. Royal Academy of Sciences, Naples. Memorie dal 1852 in Avanti Vol. 11. che contiene quelle dal 1855 al 1857. 4to. Napoli. 1857. Memorie nell' Anno 1854. pp. 237 - 346, di Vol. L 4to. Napoli. 1857. Rendiconto della Society Reale Borbonica Accademia delle Scienze. Anno 5 e 6. Nuova Serie. 1 vol. 4to. Napoli. 1857. Imperial Society of Agricidture, S^c, Lyons. Annales des Sciences Phys. et Nat. d'Agricult. et d'Industrie. OF ARTS AND SCIENCES. 263 2" Serie, Tome VIII. 1856; 3^ Serie, Tome I. 1857. Eoyal 8vo. Lyon et Paris. 1857. Royal Society of Scie7ices, Gottingen. Abliandlungen. Band XVII. von den Jahr. 1856 und 1857. 4to. Gottingen. 1857. Nachrichten von der Georg-Augusts-Universitat und der Kon. Gesell. der Wiss. zu Gottingen vom Jabre 1857. N"" 1 - 23. 1 vol. 16mo. Gottingen. 1857. Museum of Natural History in Paris. Archives. Tome X. Livr. 1 et 2. 4to. Paris. 1858. Society for the Advancement of the Physical Sciences, Freiburg, I. B. Berichte liber die Verbandlungen der Gesellschaft fiir Beforderung der Naturwissenscbaften. Heft. 1-3, und 4, N'° 25-31. 8vo. Freiburg, I. B. 1855 - 58. Oherheissen Gesellschcft fiir Nattir- und Heilkunde, Giessen. Bericbt. IV., V., und VI. 8vo. Giessen. 1854-57. Observatory of Cracow. Stlindliche Barometer-Beobacbtungen zu Krakau in den Jabren 1848 - 56 von Dr. Maximilian Weisse, Director der K. K. Sternwarte und Dr. Adalbert Kunes, Adjunct der K. K. Sternwarte. 1 vol. 4to. Wien. 1857. William H. Prescott. History of tbe Reign of Philip the Second, King of Spain, Vol. III. 8vo. Boston. 1859. Henry I. Bowditch, M. D. An Address on tbe Life and Character of James Deane, M. D., of Greenfield, Mass., August 4, 1858. 8vo pamph. Greenfield. 1858. War Department. Reports of Explorations and Surveys to ascertain tbe most Prac- ticable and Economical Route for a Railroad from the Mississippi River to the Pacific Ocean. Vols. II. - VIII. 4to. Washington. 1855-57. Right Hon. Secretary of State for War. Ordnance Trigonometrical Survey of Great Britain and Ireland. Accoimt of the Observations and Calculations of the Principal Tri- angulation ; and of the Figure, Dimensions, and Mean Specific Gravity of the Earth, as derived therefrom Drawn up by 264 PROCEEDINGS OF THE AMERICAN ACADEMY Captain Alexander Eoss Clarke, R. E., F. R. A. S.,* under the Direction of Lieut.-Colonel H. James, R. E., F, R. S., M. R. I. A., &c., Superintendent of the Ordnance Survey. Text and Plates. 2 vols. 4to. London. 1858. Samuel Willard. History of the Rise, Progress, and Consummation of the Rupture, which now divides the Congregational Clergy and Churches of Mas- sachusetts, in a Discourse delivered in the First Church in Deerfield, Mass., September 22, 1857 8vo pamph. Greenfield. 1858. Netherlands Government. Geologische Kaart van Nederland, vervaardigd door Dr. W. C. H. Staring, uitgevoerd doorhet Topographisch Bureau van het De- partement van Oorlog. uitgegeven op last van zijne Majesteit den Koning. Blad 14. Chart. Folio. Haarlem. 1858. Essex Institute. Journal of the Essex County Natural History Society. 1 vol. 8vo. Salem. 1852. Massachusetts Society for Promoting Agriculture. Transactions. New Series, Vol. I. 8vo. Boston. 1858. Royal Academy of Sciences, 8fc. of Belgium. Bulletins de I'Academie Royale des Sciences des Lettres et des Beaux- Arts de Belgique. 26""' Annee. 2'"' Ser. Tomes I. - III. 8vo. Bruxelles. 1857. Memoires Couronnes et Autres Memoires publies par I'Academie Royale Collection in 8vo. Tome VH. 8vo. Bruxelles. 1858. Annuaire de I'Academie Royale 1858. 24 Annee. 1 vol. IGmo. Bruxelles. 1858. Annales de I'Observatoire Royale de Bruxelles. Tome XII. 4to. Bruxelles. 1857. Sur les Etoiles Filantes et le Magnetisme Terrestre. Par M. Ad. Quetelet. 8vo pamph. Bruxelles. Observations des Passages de la Lune et des Etoiles de Meme Culmination. Par M. Ad. Quetelet. Der Naturen Bloeme van Jacob van Maerlant. Met Inleiding. Varianten van HSS., Aenteekeningen en Glossarium voor de eerste mael uitgegeven door J. H. Bormans. Eerste Deel. Royal 8vo. Brussel. 1857. OF ARTS AND SCIENCES. 265 Rymbybel van Jacob Van Maerlant. Met Voorrede, Varianten van HSS., Anteekeningen en Glossariura, &c., voor de eerste mael uitgegeven door J. David, Vr Eerste Deel. Royal 8vo. Brussel. 1858. A. Quetelet. Observations des Phenomenes P^riodiques. [Extr. du Tome XXXI. des Mem. Acad. Eoy. de-Belgique.] 4to pamph. Bruxelles. Annuaire de I'Observatoire Royal de Bruxelles, 1858. 25" Annee. 1 vol. 16mo. Bruxelles. 1857. State of Massachusetts. Ichnology of New England. A Report on tlie Sandstone of the Connecticut Valley, especially its Fossil Footmarks, made to the Government of the Commonwealth of Massachusetts. By Edward Hitchcock, Professor of Amherst College. 1 vol. 4to. Boston. 1858. Isaac Lea, LL. D. Descriptions of the Embryonic Forms of Thirty-Eight Species of Unionidse. 4to pamph. Philadelphia. 1858. Observations on the Genus Unio, together with Descriptions of New Species, their Soft Parts and Embryonic Forms, in the Family Unionida3. 4to pamph. Philadelphia. Descriptions of Twenty-Seven new Species of Uniones from Georgia. Remarks on some Unionidae, &c. 8vo pamph. Phil- adelphia. 1859. A. Osborn. Field Notes of Geology. 12rao pamph. New York. ' 1858. Zoologisch-Botanischer Verein zu Wien. Verhandlungen. Band VII. Jahr. 1857. 8vo. Wien. 1857. Personen- Orts- und Sach-Register. 1851-55. 1vol. 8vo. Wien. 1857. Nalurforschenden Gesellschaft in Emden. Dreiundvierzigster Jahresbericht fiir 1857. Svo pamph. Emden. 1858. Kleine Schriften. 8vo pamph. Emden. 1858. Batavian Society of Arts and Sciences. Tijdschrift voor Indische Taal-Land-en Volkenkunde uitgegeven door het Bataviaasch Genootschap van Kunsten en Wetenschappen. 3 vols. 8vo. Batavia. 1855-56. VOL. IV. 34 266 PROCEEDINGS OF THE AMERICAN ACADEMY Professor Joseph Wlnlock. American Ephemeris and Nautical Almanac for the Year 1861. 1 vol. 8vo. Washington. 1858. James D. Dana. Synopsis of the Report on Zoophytes of the United States Ex- ploring Expedition around the World, under C. Wilkes, U. S. N., Commander, in the Years 1838 - 42. 1 vol. 8vo. New Haven. 1859. State University of Michigan. Catalogue of the Officers and Students for 1859. 8vo pamph. Ann Arbor. 1859. .John C. Dalton, Jr., M. D. A Treatise on Human Physiology ; designed for the Use of Stu- dents and Practitioners of Medicine. 1 vol. Royal 8vo. Phila- delphia. 1859. Elizur Wright. Third Annual Report on Loan Fund Associations, by the Insur- ance Commissioners, January 1, 1859. 8vo pamph. Boston. 1859. [Pub. Doc. No. 9.] Fourth Annual Report of the Insurance Commissioners of the Commonwealth of Massachusetts, January 1, 1859. 8vo pamph. Boston. 1859. [Pub. Doc. No. 8.] American Association for the Advancement of Science. Proceedings of the Twelfth Meeting, at Baltimore, Maryland, May, 1858. 1 vol. 8vo. Cambridge. 1859. Charles W. Parsons, M. D. Fifth Report to the General Assembly of Rhode Island, relating to the Registry and Returns of Births, Marriages, and Deaths in the State, for the Year ending December 31, 1857. Prepared under the Direction of John R. Bartlett, Secretary of State. 8vo pamph. Providence. 1858. Josiah Curtis, M. D. " Sixteenth Report to the Legislature of Massachusetts, relating to the Registry and Return of Births, Marriages, and Deaths in the Commonwealth, for the Year ending December 31, 1857. By Oliver Warner, Secretary of the Commonwealth. 1 vol. 8vo. Boston. 1858. [Pub. Doc. No. 1.] Lyceum of Natural History of Nexo YorJc. Annals. Vol. VI. Nos. 8 - 13. 8vo. New York. 1858. OF ARTS AND SCIENCES. 267 Captain George G. Meade, U. S. Top. Engineers. Survey of the Northei-n and Northwestern Lakes, made in Obe- dience to Acts of Congress, under the Direction of the Bureau of Topographical Engineers of the War Department. 13 Charts. Washington. City of Bologna. Compendio Storico della Scuola Anatomica di Bologna dal Rina- sciraento delle Scienze e delle Lettere a tutto il Secolo XVIII., con un Paragone fra la sua Antichitk e quella delle Scuole di Sjflerno e di Padova. Scritto da Michle Medici. 1 vol. 4to. Bologna. 1857. Professor Francesco Zantedeschi. Resultamenti ottenuti da un Giroscopio. 8vo pamph. Vienna. 1856. Nuovi Esperimenti risguardanti 1' Origine della Elettricita Atmo- sferica, etc. 8vo pamph. Venezia. 1854. Ricerche sul Calorico Raggiante. 8vo pamph. Wien. 1857. Ricerche sulle Leggi della Capillarita. 8vo pamph. Venezia. 1856. Della Lunghezza delle Onde Aeree, della loro Velocitti nelle Canne a Bocca, e dell' Influenza che esercitano i varii Element! sulla loro Tonalita. 8vo pamph. Wien. 1858. Dello Sdoppiamento delle Onde Corrispondenti ai Suoni Armonici, e della Coesistenza di piii Onde vibranti nella medesima Colonna Aerea. 8vo pamph. Wien. 1858. Delle Dottrine del terzo Suono, ossia della Coincidenza delle Vi- brazioni Sonore, con un Cenno sulla Analogia che presentano le Vi- brazioni Luminose dello Spettro Solare. 8vo pamph. Wien. 1857. Della Corrispondenza che monstrano fra loro i Corpi Sonori sulla Risonanza di piii Suoni in uno. 8vo pamph. Wien. 1857. Della Unita di Misura dei Suoni Musicali, dei loro Limiti, della Durata delle Vibrazioni sul Nervo Acoustico dell' Uomo, e deli' Innalzamento del Tono fondamentale avvenuto nel Diaspason di Acciajo, in virtu di un Movimento spontaneo moleculare. 8vo pamph. Wien. 1857. Dei Limiti dei Suoni nelle Linguette libere, nelle Canne a Bocca, 6 dei loro Armonici, studiati in relazione alia Legge di Bernoulli. 8vo pamph. Wien. 1858. Delia Legge archetipa dei Suoni Ai-monici delle Corde, del Moto 268 PROCEEDINGS OF THE AMERICAN ACADEMY Vibratorio, dal quale derivano, e della Interpolazione dei Suoni Armonici negli Intervalli dei Toni degli Strumenti ad Arco e della Voce Umana precipuamente. 8vo pamph. Wien. 1858. Studio Critico-Sperimentale del Metodo comunimente seguito dai Fisici nella Determinazione dei Nodi e Ventri delle Colonne Aeree vibranti entro Canne a Bocca. Svo pamph. Wien. 1858. Della Correlazione delle Forze Chimiche Molecolari colla Ee- frangibilita delle Irradiazioni Luminose e Calorificlie Oscure. Svo pam^. Padova. 1857. Deir Origine e del Progresso della Fisica Teorica Sperimentale neir Arcliiginnasio Padovano Prelezione. 8vo pamph. Venezia. 1858. De Mutationibus qusB contingunt in Spectro Solari fixo. 4to pamph. Miinchen. 1857. Nouveau Spectrometre. 4to pamph. Padova. 1857. De la Vision St^reoscopique des Images et des Couleurs Com- plementaires. 4to pamph. Padova. 1857. Apparato per la Communicazione del Moto. 8vo pamph. Wien. 1857. Experiences de M. Zantedeschi sur I'Hypothese de Wells relative k rOrigine de la Rosee et de la Gelee Blanche. 8vo pamph. Padova. 1857. Nascita, Studi, Posizione Sociale, e Bibliografia delle Principali Opere e Memorie di Francesco Zantedeschi. 8vo pamph. Padova. 1857. Zantedeschi et Borlinetto. Question des Foyers Chimiques et Lumineux. Des Irradiations Chimiques au point de vue de la Photographie. 4to pamph. Padova. 1857. Delle Irradiazioni Chimiche e della Necessita del loro Foco separato da quello delle Irradiazioni Calorificlie e Luminose al conseguimento della Purezza e Perfezione delle Prove Fotografiche negative ottenute coi loduri d' Argento. Svo pamph. Wien. 185G. Dei Limiti di Impressionabilita delle Sostanze Foto- grafiche ; deir Influenza delle Superficie nei Fenomeni Fotogenici ; della loro Chimica Natura ; dei Miglioramenti apportati all' Arte Eliografica. Svo pamph. Wien. 1856. . Suir Influenza del Vuoto e di alcuni Gaz ne' Fenomeni Chimici, che presentano i loduri d'Argenti esposti alia Luce Solare. Svo pamph. Wien. 1857. OF ARTS AND SCIENCES. 269 Four liundred and sixty-eiglitli meeting. August 9, 1859. — Stated Meeting. The President in the chair. The Corresponding Secretary read letters of acceptance from the Hon. John H. Clifford and the -Hon. Emory Wash- burn, who were elected Fellows at the preceding meeting. Also letters relative to the exchanges of the Academy. Dr. C. T. Jackson communicated the results of the exami- nation, made by Mr. John H. Blake and himself, of the Fro- zen Well in Brandon, Vermont ; which was examined by them on the 10th and 11th of June last, in behalf of the Boston Society of Natural History. This well is situated about half a mile west of the Brandon Hotel, and is on the estate of Abraham Trombley. It was dug in the month of November, 1858. After sinking through loam and sandy sub-soil twenty feet, a bed of frozen gravel, with lumps of ice, was met with, and the whole bed was frozen to the thickness of about fifteen feet. The gravel con- sisted of large and small pebbles, imbedded in mud, which was all froi^en. Some lumps of ice, of the size of twelve-pound cannon-balls, were taken out. Below this frozen deposit, sand was struck at the depth of thirty-five feet from the surface, and three springs of water came in from below, and still supply water. The well is regularly walled with stones, and has a cover of mar- ble, with a circular hole eighteen inches in diameter cut through it. Over the well there is a curb with a windlass, covered with a roof to keep the rain from the rope ; this covering prevents any direct radiation of heat from the surface of the water in the well. At the bottom of the well, for five feet above the water, a crust of solid ice exists, attached to the walls of the well. In the winter and early sum- mer the surface of the water freezes over, even as late as the month of June. On measuring the depth of the well, it was found to be 35.4 feet deep, and there were 2.4 feet of water in it. The tempera- ture of the water on the 10th and 11th of June last was ^° Cen- tigrade, or 33° F., while there was a thick crust of solid ice extend- ing to the height of five feet above the water, and closely attached to 270 PROCEEDINGS OF THE AMERICAN ACADEMY the sides of the well. A boy was sent down in the bucket, and he broke off masses of this ice with a hammer, and sent it up for us to examine. Since ice daily forms on the sides of the well, it is evident that the temperature of the gravel-bed must be considerably below the freezing point. The hquid water which supplies the well comes from the sandy stratum below, and is warmer than the stratum which overlies it. A lighted candle was lowered down into the well, and it continued to burn ; the flame was not in any manner deflected ; so there was no current of air in the well. Numerous sj^n-ings and wells in every direction around the frozen well were examined, and none of them were frozen, or were remarkable for coldness of their waters. It was thus ascertained that the frozen stratum in which Trom- bley's well was sunk is quite limited, and that it is confined to the gravel-bed, or to the mass of frozen drift-pebbles, which shows itself on the road-side at the Hogback, four hundred and fifty feet northwest from the well. This gravel-bed dips directly towards the frozen well, and undoubtedly is the same stratum that was dug through in sink- ing it. On examining this out-crop, we saw six feet in thickness of coarse pebbles, consisting of water-worn boulders and smooth pebbles of quartz, sienite, and blue limestone. Above this was about one foot in thickness of sand, and over that about two feet of mixed sand and clay, and above this the usual sandy loam of the country. The hill rises forty-five feet from the level of the top of the well, and the land slopes towards it at an angle of six degrees, the distance being four hundred and fifty feet. Northwest from this hill, and all around it, the rocks are blue-gray compact limestone, probably of Silurian age, but destitute of fossils. On the surface of these limestone rocks are abundant drift boulders, consisting of rocks that do not occur in place in that part of Vermont. They are drift-boulders from the north. The surface of the limestone ledges is much worn by drift action, presenting the well- known appearance of les roches moutonee of glacial regions. It may be premature to propose any theory to account for the facts here stated, since we intend to make more extended researches, and through the liberality of a gentleman of this city (Uriah Boyden, Esq.) we are provided with the pecuniary means. It is proposed to sink another well to the gravel-bed, at a point half-way between the out- OP ARTS AND SCIENCES. 271 crop at the Hogback and the present well, in order to discover the extent of the frozen ground ; and this we shall do now at the close of the summer months, when the heat shall have penetrated as far as it is likely to go. Several hypotheses have been proposed, to account for the exist- ence of this bed of frozen gravel ; such as its being, perhaps, a fossil glacier of a period of intense cold, during the drift epoch ; or that the cold air of the winter months may have penetrated through even a pebble-bed; or that the longer continuance of winter cold may have caused freezing of the gravel-bed, and that the heat of our short sum- mers has not been able to reach the ice to melt it. The committee as yet adopt no conclusions, but are collecting the elements for a solution of the problem, and hope in due time to arrive at trustworthy results. They have procured from Mr. David Buckland, of Brandon, (one of the Smithsonian observers,) a series of thermometrical tables of observations, extending from 1853 to 1859, which will enable them to estimate the temperature of the climate for each month of those years, and the mean annual temper- ature. Professor Henry, of the Smithsonian Institution, made a verbal communication relative to the application of the tele- graph to the prediction of changes of the weather, particu- larly in the city of Boston and its vicinity. It has been fully established by the observations which have been made under the direction of the Smithsonian Institution, and from other sources of information, that the principal disturbances of the atmosphere are not of a local character, but commence in certain regions, and are propagated in definite directions over the whole surface of the United States east of the Eocky Mountains. From a careful study of all the phenomena of the winds of the tem- perate zones, it is inferred that over the whole surface of the United States and Canada there are two great currents of air continually flowing eastward. These currents consist of an upper and a lower, the former returning the air to the south which was carried by the latter towards the north. The lower current, which is continually flow- ing over the surface of the United States, is about two miles in depth, and moves from the southwest to northeast. The upper or return 272 PROCEEDINGS OF THE AMERICAN ACADEMY current, which is probably of neai'ly equal magnitude, flows from north- Avest to southeast, or nearly at right angles to the other, and the resultant of the two is a current almost directly from the west. The reaction of these two currents appears to be the principal cause of the sudden changes of weather in our latitude. They give definite direc- tion to our storms, accordingly as the latter are more influenced by the motion of the one or the other of these great aerial streams. The principal American storms may, from our present knowledge, be di- vided into two classes ; namely, those which have their origin in the Caribbean Sea, and those which enter our territory from the north, at the eastern base of the Rocky Mountains. Those of the first class, which have been studied with much success by the lamented liedfield and others, follow the genex'al direction of the Gulf-Stream, and, over- lapping the eastern portion of the United States, give rise to those violent commotions of the atmosphere which are in many instances so destructive to life and property along our eastern coast. These storms from the south are frequently two or three days in traversing the dis- tance from Key West to Cape Race, and their approach and progress might generally be announced by telegraph in time to guard against their disastrous effects. Though the general direction of these storms appears to be made out with considerable certainty, much remains to be done in settling the theory of their character and formation. The materials which have been collected at the Smithsonian Insti- tution during the last seven years, relative to the other class of storms, have enabled us to establish general facts of much value, not only in a scientific point of view, but also in their application to the prediction of the weather. [This statement was verified by a series of maps, exhib- ited to the Academy by Professor Henry, on which were indicated the beginning and pi'ogress of some remarkable changes of weather.] From these maps it appears that the great disturbances of the atmosphere which spread over the surface of the United States enter our territory frotn the possessions of the Northwest Company, about the sources of the Saskatchawan, at the base of the Rocky Mountains, and are thence propagated south and east, until, in many instances, they spread over the whole of the United States, and probably a large portion of the British possessions. For example, the great depression of temperature which occurred in January of the present year, and which will be remembered by every OF ARTS AND SCIENCES. 273 one as the most marked cold period of the season, entered the territory of the United States at the point before mentioned on the 5th of Janu- ary, and on the 6th reached Utah, on the 7th Santa F^, and on the 8th the Gulf of Mexico, and, passing onwards, it was felt in Guatemala on the 10th. While it was advancing southward, it was spreading over the continent to the east ; on the 7th, it reached the Red River settlement, and all places under the same meridian, down to the Gulf of Mexico. It reached the meridian of Chicago on the 8th, the western part of the State of New York on the 9th, New England on the 10th, and Cape Race on the 13th. It moved with a'bout equal velocity over the Southern States, and was observed at Bermuda on the 12th. The remarkable frost of last June, so far as it has been traced, had the same origin, and followed the same eastward course. The fact was also illustrated by the maps before mentioned, that the warm periods which have occurred in past years have followed the same law of pro- gression, and consequently their approach could have been announced to the inhabitants of the Eastern States several days in advance, bad a proper system of telegraphic despatches been established. The value of the telegraph in regard to meteorology has been fully proved by the experience of the Smithsonian Institution. The Morse line of telegraph has kindly furnished the Institution during the last twelve months, free of cost, with a series of daily records of the weather, from the principal stations over the whole country east of the Mississippi River and south of New York. In order to exhibit at one view the state of the weather over the portion of the United States just mentioned, a lai'ge map is pasted on a wooden surface, into which, at each station of observation, a pin is inserted, to which a card can be temporarily attached. The observations are made at about seven o'clock in the morning, and as soon as the results are received at the Institution, an assistant attaches a card to each place from which intel- ligence has been obtained, indicating the kind of weather at the time ; — rain being indicated by a black card, cloudiness by a brown one, snow by a blue one, and clear sky by a white card. This meteorological map is an object of great interest to the many persons from a distance who visit the Institution daily ; all appear to be specially interested in knowing the condition of weather to which their friends at home are subjected at the time. But the value of the map is not confined to the gratification of this desire. It enables us to " VOL. IV. 35 274 PROCEEDINGS OF THE AMERICAN ACADEMY study the progress of storms, and to predict what changes in the weather may be expected at the east, from the indications furnished by places farther west. For example, if a black card is seen in the morning on the station at Cincinnati, indicating rain at that city, a rain-storm may confidently be expected at Washington at about seven o'clock in the evening. Indeed, so uniformly has this prediction been verified, that last winter the advertising in the afternoon papers of the lectures to be delivered at the Institution that evening was governed by the condition of the weather in the morning at Cincinnati, — a rainy morning at the latter inducing a postponement of the lecture. It must be evident, from the facts given, that if a system of tele- graphing over the whole country east of the Rocky Mountains were established, information could be given to the Middle and Eastern States of the approach of disturbances of the atmosphere of much value to the agricultui'ist, the ship-owner, and to all others who transact business affected by changes of weather, as well as of importance to the invalid and the traveller. Indeed, with a proper combination of the lines now in operation, daily intelligence might be obtained in the city of Boston which would be of the highest interest to its in- habitants. Professor Henry mentioned Boston in particular, because this city is so situated that the storms, both of the southern and western class, reach it after they have been felt in New York, and in other places which are not as far east and north. It is necessary to remark, that the same use of the telegraph is in a measure inapplica- ble to the inhabitants of Western Europe, since they live on the east- ern side of an ocean, and cannot be apprised of the approach of storms from the west. For the same reason, the general laws of storms are more conveniently studied by the meteorologists of this country than by those of Great Britain and France. It should be distinctly understood, that the remarks which have been made in this communication relate to the more violent changes of the weather which occur in autumn, winter, and spring. The thunder- showers which occur almost daily during the warm weather in summer have somewhat of a local character, and commence at the same time, and frequently at the same hour, for several days in succession, at the same and different places ; but wherever they commence, they move eastward over the country until they are exhausted. Professor Henry also spoke of the facts collected in regard to the OF ARTS AND SCIENCES. 275 nature of American storms, and their connection with the two great aerial currents continually flowing over the temperate zone. He considered that the great changes of the weather are principally due to the gradual production of an unstable equilibrium in the two cur- rents, by the accumulation of heat and moisture in the lower. He spoke in high terms of the importance of the labors of Mr. Espy in developing the theory of the upward motion of air, and the evolution of latent heat in the production of storms. In reply to a question as to the possibility of crossing the Atlantic in a balloon, the Professor stated that? he had little doubt, if the bal- loon could be made to retain the gas, and to ascend into the upper current, it would be wafted across the ocean in the course of three or four days. If it descended into the lower current, it would be carried to the north of east ; and if it continued in the upper current, it would reach Europe south of the same point. The course could be changed, within certain limits, by ascending and descending from one current to the other. The late balloon voyage from St. Louis to Jefferson County, New York, was of interest in confirming the theoretical direc- tion of the great lower current of this latitude. The Corresponding Secretary presented the following paper upon the Mosses collected in Captain Rodgers's recent explor- ing voyage ; which is published by permission of Captain Rodgers. Characters of sortie new Musci collected hy Charles Wright in the North Pacific Exploring Expedition* under the Command * Of the very interesting collection of Mosses brought home by the Expedition, eighty-six were gathered in Japan and adjacent islands, and seven on the coast of China. Of these ninety-three species, the fifty-four following are identical with species occurring either in Europe or in North America, or in both coun- tries : — Sphagnum squaiTOSum, Phascum crispum, Weisia viridula, Rhabloweisia fugax, Dicranella curvata, Dicranum scoparium, Trematodon longicollis, Leucobryum glaucum, Trichostomum pallidum, T. inflexum, Barbula unguiculata, Ceratodon purpureus, Eustichium Norvegicum, Orthotrichum fastigiatum, Hedwigia ciliata, Entosthodon acuminatum, E. ericetorura, Bryum pyriforme, B. nutans, B. torques- cens, B. pallescens, Mnium punctatum, Bartramia pomiformis, B. fontana 1 Atri- chum angustatum, Pogonatum aloides, P. alpinum, Polytrichum juniperinum, P. commune, Hypnum scitum, H. minutulum, H. Starkii, H. crassinervium, H, popu- 276 PROCEEDINGS OF THE AMERICAN ACADEMY of Captain John Rodgers. By William S. Sullivant and Leo Lesquereux. August, 1859. 1. FissiDENS LAXUS (sp. nov.) : dioicus, perpusillus, acfocarpus, simplex ; foliis 5 - 6-jugis oblongis longius acuminatis costa excurrente cuspidatis laxe areolatis, ai'eolis hexagono-rotundis permagnis ; capsula ovali leptodermi. Hong Kong, China. 2. FissiDEXS INCRASSATUS (sp. nov.) : dioicus, pusillus, acrocarpus, ramosus ; foliis 8 - 10-jugis oblongis lineari-oblongisve subito acumi- natis dense minute areolatis, costa vix excurrente ; capsula ovali-oblonga pachydermi ; operculo longe rostrato ; calyptra dimidiata. On rocks at Camoens' Grotto, near Macao; also at Hong Kong, China. 3. FissiDENS PUKGENS (sp. nov.) : monoicus, acrocarpus, pusillus, simplex; foliis 10-14-jugis anguste linearibus sensim acuminatis, costa sub apice desinente ; capsula ovali rostrato-operculata ; calyptra anguste conica ; flQfibus masculis axillarjjjus. On rocks in shaded ravines, Hong Kong, China. leum, H. salebrosum, H. velutinum, H. rutabulum, H. serpens var., H. adnatum, H. denticulatum, H. serrulatum, H. microcarpum, H. brevii'ostre, H. triquetrum, H. splendens, H. Oakesii, H. pratense, H. Haldanianum, H. cupressiforme van, H. polymorphura, H. cuspidatum, Hookeria lucens var. ? Anomodon tristis, Pylaisasa velutina. These species are distributed as follows : — eight occur only in Eastern North America, and six in Europe ; two occur in Europe, and in Western North America ; seven in Europe and in Eastern and Western North America; and thirty-one are common to both Europe and Eastern North America. Or, in other words, forty are found both in Europe and in North America ; of the remaining fourteen, six are restricted to Europe, and eight to North America. Closely aUied to these fifty-four species are the twenty-four Japanese and Chinese species here characterized as new. From these data it is apparent that the similarity of the bryology of Japan to that of Europe and North America, particularly their Western and Eastern portions respectively, is even greater than that which prevails (as recently shown by Pro- fessor Gray's admirable papers on the subject) in the PIia;nogamous floras of those countries; and indeed, excluding a Uypopteiijr/ium and a few Macromitria, — the latter represented by one species on the Southern Alleghany Mountains, — if all the species of the Japan collection should be found in New England, it would ex- cite no other surprise than that they had so long escaped detection. OF ARTS AND SCIENCES. 277 4. ORTnoTRiCHUM Japonicum (sp. nov.) : monoicura, laxe pulvi- natum ; foliis e basi elongato-lanceolata linearibus ; capsula exserta obovata longicolla 8-sti"iata ; peristomii duplicis dentibus bigeminatis, ciliis nodoso-articulatis carinatis ; calyptra campanulata multoties plicata epilosa. On trees in shaded ravines, Hakodadi, Japan. * 5. DiCRANELLA OBSCURA (sp. nov.) : dioica, dense caespitosa, sub- simplex ; foliis e basi lanceolata longissime subulatis subsecundis apice dentatis, costa percurrente ; capsula ovali-cylindracea microstoma pachydermi ; operculo aciculari-rostrato erecto ; annulo obscuro ; calyptra magna ; sporis majusculis. On steep banks near Hong Kong, China. 6. Pttchomitrium Wilsoni (sp. nov.) : monoicum, caespitosum ; caulibus robustis ; foliis confertis lineari-lanceolatis superne margine incrassata serratis, costa sub apice evanida ; capsula elongato-ovali microstoma ; operculo rectirostro ; perist. dentibus subtrifidis hie illic pertusis ; calyptra permagna campanulata rostrata plicata basi lobata. On rocks and hill-sides, Simoda, Japan. 7. Trichostomum tortuloides (sp. nov.) : monoicum, dense ca3spitans ; caulibus brevibus congesto-foliosis ; foliis lineari-lanceolatis costa excurrente cuspidatis, marginibus incurvis subundulatis integer- rimis ; capsula cylindracea curvula ; perist. dentibus modice contortis inferne nodoso-articulatis ; operculo longe rostrato ; calyptra longa an- gusta contorta. On rocks among hills, near Simon's Town, Cape of Good Hope. 8. Mnium flagellare (sp. nov.) : dioicum ; caulibus simplicibus, innovationibus numerosis filiformibus erectis appresso-microphyllis in- fra perichfet. et perigon. oriundis ; foliis caulinis ascendendo majoribus laxis erecto-patentibus oblongis elliptico-oblongisve superne duplicato- serratis dense minute rotundato-areolatis papillosis, costa percurrente ; paraphysibus subclavatis : fructu non viso. Rocks, on the summit of mountains, northeast of Hakodadi, Japan. 9. Leucobrtum Boninense (sp. nov.) : dioicum, subgracile ; fohis lineari-lanceolatis strictiusculis superne convolutis apice serratis dorso Isevibus, pericha^tialibus interioribus longe vaginantibus subito attenu- atis ; capsula obovato-oblonga strumosa ; pedicello breviusculo : flo- ribus masculis aggregatis. Bonin Islands. 278 PROCEEDINGS OF THE AMERICAN ACADEMY 10. Macrojiitrium nreuLARUM (sp. nov.) : dioicum, compacts ca3spitans ; ramis brevissimis densifoliis ; foliis ligulatis acutis erecto- incurvis apice involutis, cellulis inferne lineari-oblongis subpellucidis supei'ne rotundatis minutis carnosulis papillosis, costa cum apice de- sinente ; capsula ovali microstoma brevipedicellata ; operculo recte rostrato ; calyptra mitriformi pilosissima. On trees, Loo Choo Islands, Ousima ; also Simoda, &c., Japan. 11. Macromitridm gymnostomum (sp. nov.) : dioicum, tenellum, dense deplanato-coespitans ; ramis brevissimis incrassatis ; foliis ligulatis acuminatis strictis erecto-patentibus inferne oblongo- superne minute rotundato-areolatis papillosis, costa sub apice evanida ; capsula oblongo- ovali striata gymnostoma ; operculo e basi depressa oblique aciculari- rostrato ; calyptra cuculliformi plicata epilosa. On rocks and trees, Simoda, Japan ; and Ousima, one of the north- ern Loo Choo Islands. 12. PoGONATUM Japonicum (sp. nov.) : elatum ; caule simpHci sub perichastio innovante inferne aphyllo ; foliis confertis siccitate circinato- tortilibus humidis patentissimis lineari-lanceolatis spinuloso-serratis brevius lamellosis ; capsula cylindracea erecta subcurvula papillosa brevipedicellata. Mountains northeast of Hakodadi, Japan. 13. Bryuji HUMIDULU3I (sp. nov.) : dioicum, innovationibus gracili- bus ramosum ; foliis oblongo-lanceolatis sensim attenuatis costa exce- dente aristatis lineari-rhomboideo-areolatis superne denticulatis margine revolutis ; capsula pendula elongata cylindraceo-clavata curvula late annulata ; operculo magno hemisphjerico papillato ; peristomio nor- mali. Moist places among mountains, near Simon's Town, Cape of Good Hope. 14. Brtum crudoides (sp. nov.) : dioicum ; caule simplici ; foliis ascendendo majoribus, inferioribus lanceolatis, comalibus erecto-patenti- bus lineari-lanceolatis acuminatis apice denticulatis areolatione lineari, costa valida evanida ; capsula suberecta oblongo-elliptica brevicoUa microstoma ; peristomio B. polymorphi : flore masc. capituliformi. Behring's Straits. 15. Bryum Wrightii (sp. nov.) : monoicum vel synoicum, dense csespitans, pusillum ; caulibus ramisque perbrevibus ; foliis gemmaceo- OF ARTS AND SCIENCES. 279 imbricatis, comalibus lanceolatis longe acuminatis costa cnspidatis su- perne denticulatis laxius oblongo-areokitis marginibus anguste revolutis ; capsula pendula globoso-pyriformi microstoma annulata ; perist. intern, ciliis linearibus perforatis, ciiiolis subnullis ; operculo depresso-conico. Arakamchetchene Island, Behring's Straits. IG. Bryum megalodictyon (sp. nov.) : dioicum, pusillum ; foliis erectis superne congestis oblongo-ovatis acutis concavis evanido-costatis, cellulis hexagono-oblongis amplissimis ; capsula suberecta oblongo- pyrifbrmi annulata ; ciliis perist. intern, linearibus ciiiolis nullis ; operculo hemisphtBrico-conico papillato. " On walls at the Capitol," Loo Choo Islands. 17. Bartramia inserta (sp. nov.) : dioica, exigua, dense ca^spi- tosa, luteo-viridis ; foliis suberectis lineari-lanceolatis attenuatis sparse papillosis toto ambitu serratis marginibus recurvis, costa subpercur- rente ; capsula erecta globosa sulcata gymnostoma ; operculo convexo minute conico. On damp vertical rocks among hills, near Simon's Town, Cape of Good Hope. 18. Hypnum assurgens (sp. nov.) : dioicum, homophyllum ; caule arcuato-assurgente subpinnato-ramuloso eparaphylloso ; foliis erecto- incurvis apei-tis e basi lata cordato-ovata lineari-lanceolatis papillosis apice serrulatis marginibus revolutis cellulis guttulatis opacis, costa pellucida sub apice evanida ; capsula gibboso-pblonga cernua annulata ; pedicello tuberculoso ; operculo longirostrato ; peristomio normali. On decayed logs, shady hill-sides, Ousima, Loo Choo Islands. 19. Hypnum dispersum (sp. nov.) : monoicum ; caule prostrato diviso pinnato-ramuloso paraphylloso ; foliis patentibus e basi late ovata subito lanceolato-attenuatis serrulatis papillosis, costa (prsecipue in pericha3tialibus) valida sub apice evanida ; capsula oblonga vel cylindracea curvula ' horizontal! annulata ; operculo convexo-conico obtuso. On dry ground, shaded hill-sides, Simoda, Japan ; and Loo Choo. 20. Hypnum oblongifolium (sp. nov.) : monoicum, prostratum, subpinnatum ; caulibus ramisque laxius compresso-foliosis ; foliis e basi brevissima convoluto-angustata oblongis acutis apice serratis lineari- areolatis ; capsula (an normali ?) gibboso-ovali inclinata ; operculo convexo-conico apiculato ; peristomio hypnoideo. Hong Kong, China. 280 PROCEEDINGS OF THE AMERICAN ACADEMY 21. HTPNU3I SiMODENSE (sp. nov.) : dioicum, vage et subpinnatim ramosura ; foliis confertis concavis ovato-ellipticis subito longe filiformi- acuminatis elongato-areolatis raargine recurvis, costa supra medium evanescente ; capsula oblongo-ovali suboequali plagiostoma erectius- cula ; operculo conico brevirostro ; peristomio H. Iceti. Simoda, Japan. 22. Hypnum macrostegium (sp. nov.) : dioicum ; subfastigiato- ramosura ; foliis confertis e basi oblongo-ovata sensim longe acuminatis plicato-striatis serratis elongato-areolatis margine basilar! recurvis, costa subpercurrente ; capsula cylindraceo-ovali erecta annulata ; int. perist. ciliolis subnullis ; operculo conico longe rostrato. Steep banks, among bills, near Simoda, Japan. 23. Hypnum flaccidum (sp. nov.) : monoicum, prostratum, sub- pinnatim^ ramosum, laxe foliosum ; foliis subbifariis horizontalibus ovato-lanceolatis sensim filiformi-acuminatis ecostatis integerrimis lax- issime oblongo-areolatis ; capsula oblonga vix curvula longicolla hori- zontali ; operculo breviconico obtusato. On banks, shaded hill-sides, Simoda, Japan. 24. Hypnum spinulosum (sp. nov.) : monoicum, irregulariter sub- pinnatimve ramosum, arctius deplanato-foliosum ; foliis divergentibus ovato-lanceolatis setiformi-attenuatis ecostatis toto ambitu serratis den- sius elongato-areolatis ; capsula obovato-oblonga basi attenuata curvula horizontali. Simoda, Japan. 25. Hypnum thelidictyon (sp. nov.) : monoicum, vage subfasti- giato-raraosum ; caulibus ramisque assurgentibus compressis ; foliis laxis e basi constricta oblongis sensim longius acuminatis concavis ecostatis toto margine serratis, cellulis elongatis grosse unipapillatis, alaribus utrinque 3 — 4 amplissimis vesiculiformibus ; capsula minuta in pedicello laevi oblonga subpendula; operculo longissime aciculari- rostrato. Hill-sides, Ousima : rocks in ravines. Hong Kong, China. 26. Hypnum POHLiiECARPUM (sp. nov.) : dioicum, prostratum, parce ramosura ; foliis bifariam complanatis ovato-lanceolatis brevius recte vel oblique acuminatis apice grosse serratis, cellulis linearibus, costellis binis brevissimis ; capsula cylindracea longicolla vix incurva subpen- dula ; operculo conico brevirostrato. On steep shaded banks, Simoda, Japan. OF ARTS AND SCIENCES. 281 27. Htpnum erectiusculum (sp. nov.) : dioicum, subprostratum ; caule vage diviso ramuloso compi'esso ; foliis deorsum falcatis late ovato-lanceolatis acuminatis apice serrulatis dense lineari-areolatis, costellis subnullis ; capsula gracili cylindracea erectiuscula annulata ; operculo conico obtuso. Hakodadi, Japan. 28. Htpnum Rodgersianum (sp. nov.) : dioicum, majusculum ; caule assurgente simplici vel semel diviso regulariter pinnato-ramuloso ; foliis oblongo-lanceolatis acuminatis deorsum falcatis serrulatis ecostatis tenui-areolatis ; capsula oblonga breviuscula turgida gibboso-incurva, sicca estriata ; operculo obtuse conico. On the ground, shady mountain sides, Katonasiraa, between the proper Loo Choo group and Japan. 29. Htpnum eximium (sp. nov.) : monoicum, exiguum, prostratum, pinnato-ramulosum ; foliis laxis bifariis oblongis ovato-oblongisve acutis ecostatis superne serratis laxius elongato-areolatis ; capsula gibboso- oblonga turgida incurva subhorizontali annulata ; operculo convexo- conico. On decayed wood, mountain-sides, Bonin Islands. 30. Htpnum subalbidum (sp. nov.) : monoicum, exiguum, pros- tratum, vage subpinnatim ramulosum ; foliis compressis divergentibus oblongo-lanceolatis tenuiter acuminatis integerrimis ecostatis lineari- areolatis ; capsula subovali vix curvula horizontali exannulata ; oper- culo conico brevirostrato. On damp decayed wood, Simoda, Japan ; also Bonin Islands. 31. Htpnum Smallii (sp. nov.) : dioicum, exiguum ; caule pros- trato subpinnatim ramuloso ; foliis subcompresse imbricatis erecto- patentibus lanceolatis longe acuminatis ecostatis obsolete serrulatis, cellulis compactis angustissimis ; capsula elongato-elliptico-oblonga hori- zontali pendulave ; operculo conico rostrato. On decayed logs, shaded hill-sides, Ousima ; also Bonin Islands. 32. Htpnum Ometepense (sp. nov.) : monoicum, laxe csespitosum ; caule tenui repente ; ramis arcuato-erectis fasciculato-ramulosis ; foliis lanceolatis acuminatis patentibus superne serratis, cellulis linearibus, costellis binis brevissimis ; capsula in pedicello elongate obovato-oblonga macrostoma subpendula ; operculo e basi conica tenuiter brevi-rostrato. On bushes, summit of a mountain on the Island of Ometepe, in Lake Nicaragua. VOL. IV. 36 282 PROCEEDINGS OF THE AMERICAN ACADEMY 33. HOOKERIA Wrightii (sp, nov.) : dioicum, majusculum, pros- tratura, dense pinnatim ramulosum, subcompresse foliosum ; foliis oblongo-ovalibus subito in acumen longum tenue flexuosum productis, marginibus infra acumen convolutis, cellulis angustissime linearibus, costis binis ad medium evanidis ; capsula oblonga ingequali macrostoma inclinata ; peristomio normali eciliolato ; operculo convexo-conico recte rostrato ; calyptra e basi mitriformi multifida longe rostrata. Growing with Hypniim Ometepense. The following paper was also presented through the Corre- sponding Secretary. A Synonymic List of the Echinodermata of the Palaeozoic Rocks of North America. By S. S. Lyon and S. A. Casseday. In devoting the leisure hours of the last few months to the study of the Crinoidea of Kentucky and other of the principal Western States, we found, at the very outset, that the principal difficulty attending such researches was the entire absence of any concise summary of the labors of American paheontologists among this interesting family of fossil remains. In order to supply this deficiency, the following syno- nymic list was formed for our private use ; but, hoping it might aid others engaged in similar studies, it was determined to offer it for pub- lication. It embraces only the Crinoidea of the Palteozoic Rocks ; as our acquaintance with those of the newer systems is necessarily exceed- ingly limited, owing to their imperfect development in the States to which reference has been made above. Besides, the rocks above the Permian afford comparatively few species of these organisms. It was at first intended to divide the subcarboniferous into upper and lower ; but the imperfect knowledge of the stratigraphy of the Western rocks precludes the feasibility of such a division. These labors have been retarded, and possibly left imperfect, on ac- count of the few facilities within our reach. Unable to command an extensive collection of authorities, we have been forced to gather here and there, in private libraries, the required information. Some of the species recognized in the table were evidently founded upon mere fragments, which, however interesting in themselves, are wholly insufficient for characterizing species. They are enumerated, however, in order that the table may be as complete as the materials within reach would allow. OF ARTS AND SCIENCES. 283 List of PalcEozoic Echinodermata of North America. ACROCRINUS, Yandell, Sill. Jour., 1855, Vol. 20, p. 135. A. Shumardi, Yandell, Sill. Jour., 1855, Vol. 20, p. 135, with wood- cut. Suhcarboniferoiis. Archimedes limestone. A. URN^FORMis, Hall, Iowa, Vol. 1, p. 690, PL 25, fig. 9, a, b. Suhcarhoniferous. Kaskaskia limestone. ACTINOCRINUS, Miller, 1821. A. ABNORMis, Lyon, Geol. Survey of Kentucky, Vol. 3, p. 479, PI. 4, fig. 1, a, b. Devonian. Beargrass Creek, Kentucky. A. iEQUALis, Hall, Iowa, Vol. 1, p. 592, PI. 11, fig. 4, a, b. Sub- carboniferous. Bui'lington limestone. • A. BiTURBiNATUs, Hall, lowa, Vol. 1, p. 616, PI. 16, fig. 5, 6, a, b, c. Subcarboniferous. Keokuk limestone. A. BREVicoRNis, Hall, Iowa, Vol. 1, p. 571, PI. 10, fig. 4, a, b. Subcarboniferous. Burlington limestone. A. BREVis, Hall, Iowa, Vol. 1, p. 567, PI. 10, fig. 3, a, b. Subcar- boniferous. Burlington limestone. A. c^LATUS, Hall, Iowa, Vol. 1, p. 585, PI. 10, fig. 14, a, b. Sub- carboniferous. Burlington limestone. A. Chrystti, Shumard, Geol. Survey of Missouri, Part 2, p. 191, PL A, fig. 3. Subcarboniferous. Actinocrinites, Chrysty, Letters on Geology, PL 1, fig. 1, 2. Encrinital limestone. A. CONCINNUS, Shumard, GeoL Survey of Missouri, Part 2, p. 189, PL A, fig. 5. Subcarboniferous. Encrinital limestone. A. CORNICULUS, Hall, Iowa, Vol. 1, p. 566, PL 10, fig. 1, a-c. Subcarboniferous. Burlington limestone. A. CORNIGERUS, Hall, Iowa, Vol. 1, p. 576, PL 9, fig. 12, a-c. Subcarboniferous. Burlington limestone. A. DiscoiDEUS, Hall, Iowa, VoL 1, p. 594, non Jcon. Subcarbon- iferous. Burlington limestone. A. (Bato) eikosiadacttlus, Casseday, Zeitschrift der Deutschen GeoL Gesell. Berlin, 1854, p. 238, PL 2, fig. 1, a-c, 3. Subcarboniferous. Spurgen Hill, Iowa, in the Archimedes limestone. A. GouLDi, Hall, Iowa, Vol. 1, p. 613, PL 15, fig. 6, a, b. Subcar- boniferous. Keokuk limestone. 284 PROCEEDINGS OF THE AMERICAN ACADEMY A. (Bato) irregularis, Casseday, Zeitschrift der Deutschen Geol. Gesell., p. 240, PI. 2, fig. 2, a - c. Subcarboniferous. Spurgen Hill, Iowa. A. KoNiNCKi, Shiimard, Geol. Survey of Missouri, Part 2, p. 194, PI. A, fig. 8, a — c. Subcarboniferous. Encrinital limestone. A. LONGiROSTRis, Hall, Vol. 1, p. 589, PL 2, fig. 2, a, b, 4, c, d. Subcarboniferous. Burlington limestone. A. LowEi, Hall, Iowa, Vol. 1, p. 611, PI. 15, fig. 5, a, b. Subcar- boniferous. Keokuk limestone. A. MINOR, Hall, Iowa, Vol. 1, p. 573, non icon. Subcarboniferous. Burlington limestone. A. MissouRiENSis, B. F. Shumard, Geol. of Missouri, Part 2, p. 190, PI. A, fig. 4, a-c. Subcarboniferous. Encrinital limestone. A. MULTiRADiATUS, B. F. Shumard, Trans, Acad. Sci. St. Louis, 1857 - 8, Vol. 1, No. 1, p. 75, PL 1, fig. 5. A. multiradiatus, Hall, Iowa, Vol. 1, p. 579, PL 10, fig. 9. Subcarboniferous. Burlington limestone. A. MULTiBRACHiATUS, Hall, lowa. Vol. 1, p. 580, PL 10, fig. 10. Suhcarboniferoiis. Burlington limestone. A. (DoRTCRiNUs) MississiPPiENSis, Roemer, Ai'chiv fur natur- geschichte. Von Troschel, Jahrgang XIX., Bd. 1, 1853. Sub- carboniferous. His genus was based merely upon the re- markably long thorns which protrude from the upper surface. A. Nashvilli^, Hall, Iowa, Vol, 1, p. 609, PL 15, fig, 4; PL 16, fig. 4, a, b ; Troost, Monograph, MSS, Subcarboniferous. Keokuk limestone ; White's Creek, Tennessee. A. ORNATUS, Hall, Iowa, Vol. 1, p. 583, PL 10, fig. 12, Subcar- boniferous. Burlington limestone. A. PARVUS, B, F, Shumard, Geol. Survey of Missouri, Part 2, p. 193, PL A, fig. 9, Subcarboniferous. St. Louis limestone. A. PENTAGONUS, Hall, lowa, VoL 1, p. 579, PL 10, fig. 6, a, b. Subcarboniferous. Burlington limestone. A. PERNODOSUS, Hall, Iowa, Vol. 1, pp. 608, 617. PL 15, fig. 3, a, b ; PL 16, fig. 7. Subcarboniferous. An adult specimen of A. verrucosus, Hall, A. PERNODOSUS, var,. Hall, Iowa, Vol, 1, p. 617, PL 16, fig, 7, Subcarboniferous. Keokuk limestone. A, PLUMOSUS, Vide Glyptocrinus plumosus. OF ARTS AND SCIENCES. 285 A. PROBOSciDALis, Hall, Iowa, Vol. 1, p. 584, PI. 10, fig. 13. Suhcarhoniferous. Burlington limestone. A. PTRAMiDATUS, Hall, lowa, Vol. 1, p. 565, non icon. Suhcar- boniferous. Burlington limestone. A. PYRiFORMis, B. F. Shumard, Geol. Survey of Missouri, Part 2, p. 192, PI. A, fig. 6, a, b. Suhcarhoniferous. Encrinital limestone. A. RAMULOSUS, Hall, Iowa, Vol. 1, p. 615, PI. 15, fig. 7. Suhcar- honiferous. Keokuk limestone. A. ROTUNDUS, Yandell and Shumard, Geol. Survey of Missouri, Part 2, p. 191, PI. A, fig. 2, a, b. See Chrysty, Letters, PI. 1, fig. 3, 4. Suhcarhoniferous. Encrinital limestone. A. SCULPTUS, Hall, Iowa, Vol. 1, p. 582, PI. 10, fig. 11, a, b. Suh- carhoniferous. Burlington limestone. A. SUBACULEATUS, Hall, lowa, Vol. 1, p. 570, PI. 10, fig. 2, a, b. Suhcarhoniferous. Burlington limestone. A. SUPERLATUS, Hall, Iowa, Vol. 1, p. 572, non icon. Suhcarhon- iferous. Burlington limestone. A. sTMMETRicus, Hall, lowa. Vol. 1, p. 574, PI. 10, fig. 8, a, b. Suhcarhoniferous. Burlington limestone. A. TENUIRADIATUS, Hall, Palteont. of New York, Vol. 1, p. 18, PI. 4, fig. 8, 9. Silurian. This is Palceocystites tenuiradiatas. A. TRICORNIS, Hall, Iowa, Vol. 1, p. 569, non icon. Suhcarhon- iferous. Burlington limestone. A. TRiNODUS, Hall, Iowa, Vol. 1, p. 575, non icon. Suhcarhon- iferous. Burlington limestone. A. TURBiNATUS, Hall, lowa, Vol. 1, p. 587, PI. 11, fig. 1. Suhcar- honiferous. Burlington limestone. A. TURBINATUS, var. ELEGANS, p. 588, PL 11, fig. 5. Suhcarhon- iferous. Burlington limestone. A. UMBROSUS, Hall, Iowa, Vol. 1, p. 590, PI. 11, fig. 3, a, b. Suh- carhoniferous. Burlington limestone. A. UNICORNIS, Owen and Shumard, Geol. Survey of Wisconsin, Iowa, and Minnesota, 1852, p. 593, PL 5, A, fig. 12, a, b. A. unicornis, Hall, Iowa, p. 568. Suhcarhoniferous. Bur- lington limestone. A. VENTRicosus, Hall, Iowa, Vol. 1, p. 595, PL 11, fig. 6, a, b. Suhcarhoniferous. Burlington limestone. 286 PROCEEDINGS OP THE AMERICAN ACADEMY A. VERRUCOSUS, Hall, Iowa, Vol. 1, p. 578, PI. 10, fig. 7, a, b. Sub- carboniferous. Probably a younger specimen of A.pernodosus. A. Verneuilianus, B. F. Shumard, Geol. Survey of Missouri, Part 2, p. 193, PI. A, fig. 1, a, b. Subcarboniferous. En- crinital limestone. A. Yandelli, B. F. Shumard, Trans. Acad. Sci. St. Louis, 1857, Vol. 1, No. 1, p. 76. Actinocrinites, Yandell and Shumard, Contributions, p. 24, fig. 5, a, b. Subcarboniferous. Button- Mould Knob, Kentucky. AGARICOCRINITES, Troost, MSS. (Sub-genus of Actinocrinus, Hall, 1858.) A. BULLATUS, Hall, Iowa, Vol. 1, p. 562, PI. 9, fig. 11, a, b. Sub- carboniferous. Burlington limestone. A. STELLATUS, Hall, lowa, Vol. 1, p. 564. Subcarboniferous. Burlington limestone. A. TUBEROsus, Hall, Iowa, Vol. 1, p. 617, PI. 16, fig. 2, a, b, c. A. tuberosus, Troost, MSS., Cat. Amphoracrinus Atneri- canus? Rocmer, in Bronn, Lethea, Vol. 11, p. 50, PI. 4, fig. 15, a, b. Subcarboniferous. Keokuk limestone ; Warsaw limestone, White's Creek, Tennessee. A. Whitfieldi, Hall, Iowa, Vol. 1, p. 621. Subcarboniferous. Keokuk limestone. A. WoRTHENi, Hall, Iowa, Vol. 1, p. 619, PI. 16, fig. 1. Subcar- boniferous. Keokuk and Warsaw limestone. AGASSIZOCRINUS, Troost, MSS.; Hall, 185.8, Iowa, Vol. 1, p. 684. A. CONICUS, Hall, Iowa, Vol. 1, p. 687. Astylocrinus Icevis, F. Roemer, See Owen and Shumard, Rep. Wisconsin, Iowa, and Missouri, p. 597, PI. 5, fig. 6. Subcarboniferous. This fossil has a wide range : it extends from Iowa to Tennessee. A. CONSTRICTUS, Hall, Iowa, Vol. 1, p. 687, PI. 25, fig. 10. Sub- carboniferous. Kaskaskia limestone. A. DACTYLiFORMis, Hall, lowa, Vol. 1, p. 685 ; Troost, MSS. ; Shu- mard, Red River of Louisiana, p. 199. Subcarboniferous. Kaskaskia limestone. A. GIBBOSUS, Hall, Iowa, Vol. 1, p. 686, PI. 25, fig. 6, and 6, b. Subcarboniferous. Kaskaskia limestone. OF ARTS AND SCIENCES. 287 AGELACRINUS, Vanuxem, 1842. A. DiCKSONi, Billings, Geol. Survey of Canada, Palaeont., Dec. III. p. 84, PI. 8, fig. 3, 3 a, 4, 4 a. Silurian. Trenton limestone. A. Habiiltonensis, Vanuxem, Geol. 3d Dist. New York, p. 306, 158. Devonian. Hamilton group. A. Kaskaskiensis, Hall, Iowa, Vol. 1, p. 696, PI. 25, fig. 18. Suhcarhoniferous. Kaskaskia limestone. AMYGDALOCYSTITES, Billings, 1854. A. FLOREALis, BiUings, Canadian Journal, Vol. 2, p. 270 ; Survey Eeport, 1856, p. 289 ; Palaeontology, Dec. III. p. 63, PI. 6, fig. 1, a — e. Silurian. Trenton limestone. A. TENUiSTRiATUS, Rep. Geol. Survey of Canada, 1857, p. 289; Canad. Journ. Vol. 2, p. 271 ; Palaeont., Dec. III. p. 64, PI. 6, fig. 2 a, 2 b. Silurian. Lower Silurian. A. RADiATUS, Rep. Geol. Survey of Canada, 1857, p. 289; Canad. Journ., Vol. 2, p. 271 ; Palaeont., Dec. III. p. %b, PI. 6, fig. 3, a, b. Silurian. Trenton limestone. APIOCYSTITES, Forbes, 1848. A. ELEGANS, Hall, Nat. Hist, of New Y'ork, Palaeontology, Vol. 2, p. 243, PI. 51, fig. 1 - 17. Compare A. pentremoides, Forbes, Mem. Geol. Soc. of Great Britain, 1848, Vol. 2, Part. 2, p. 502, PI. 45. Silurian. Niagara group. ARCHEOCIDARIS, McCoy. Echinocrinus, Volborth, 1832. Pal^ocidaris, Desor. A. ACULEATUS, Shumard, Trans. Acad. St. Louis, Vol. 1, No. 2, 1858, p. 223. Coal measures. A. Agassizi, Hall, Iowa, Vol. 1, p. 698, PI. 26, fig. 1, a-d. Suh- carhoniferous. Burlington limestone. A. BIANGULATUS, Shumard, Trans. Acad. St. Louis, Vol. 1, Part 2, p. 224. Middle coal measures. A. Keokuki, Hall, Iowa, Vol. 1, p. 699, PI. 26, fig. 2, a, b. Suhcar- honiferous. Keokuk limestone. A. MEGASTYLUS, Shumard, Trans. Acad. St. Louis, Vol. 1, Part 2, p. 225. Upper coal measures. A. NoRWOODi, Hall, Iowa, Vol. 1, p. 701, PI. 26, fig. 5, a-e. Suhcarhoniferous. Kaskaskia limestone. A. Shumardiana, Hall, Iowa, Vol. 1, p. 699, PI. 26, fig. 3, a - d, Suhcarhoniferous. "Warsaw limestone. 288 PROCEEDINGS OF THE AMERICAN ACADEMY A. Vermiliaxa, King, Per. Foss., PL G, figs. 22-24; Swallow and Hahn, Trans. Acad. Nat. Sci. St. Louis, Vol. 1, No. 2, p. 180. In the Permian rocks of" Kansas. A. WoRTHENi, Hall, Iowa, Vol. 1, p. 700, PI. 26, fig. 4, a-g. Stihcarboniferous. St. Louis limestone. ASTERIAS, Linnaeus, 1748. A. ANTiQTTA, Troost, Trans. Geol. Soc. of Pennsylvania, Vol. 1, p. 232, PI. 10, fig. 9 ; 5th Rep. Geol. Tennessee, p. 58 : non Hist. Sueci, p. 89, t. 26, f. 6. Silurian. Mountain lime- stone. A. ANTiQUATA, Prof. Locke, Proceed. Acad. Philad., Vol. 1, p. 32. Silurian. Cincinnati, Ohio. A. MATDTiNA, Hall, Palffiont. N. York, Vol. 1, p. 91, PI. 29, fig. 5, a, b. Silurian. Trenton limestone. A. Sp. indet.. Hall, Pateont. N. York, Vol. 1, p. 18, PI. 4, fig. 11, a, b. Silurian. Chazy limestone. A. Sp. indet., G. Graham, J. G. Anthony, and U. P. James, Sill. Jour., 2d Series, Vol. 1, p. 441, with wood-cut. Silurian. Cincinnati, Ohio. ASTEROCRINUS. J^ide Plerotocrinus. ASTYLOCRINUS. Vide Agassizocrinus. ASTROCRINITES, Conrad (non Austin). A. PACHTDACTYLUS, Courad, in Mather, Geol. New York, p. 346, 347 ; Sill. Jour., 1st Series, Vol. 27, p. ZQ>o. Silurian. Pentamerus limestone. ATELEOCYSTITES, Billings, 1858, Geol. Survey of Canada, Palaeont., Dec. III. p. 72. Silurian. Lower Silurian. A. HuxLEYi, Billings, Palaeont., Dec. HI. p. 72. Silurian. Trenton limestone. BATOCRINUS. Vide Actinocrinus. CARYOCRINUS, Say, 1825, Jour. Acad. Nat. Sci. Phil., IV. 9. C. ORNATUS, Hall, Palaeont. New York, Vol. 2, PI. A, 41, fig. 1, PI. 49, fig. 1, a - z, PI. 49 A, fig. 1, a - d. Von Buch, Uber Cystideon, Taf. 1, fig. 1 - 7. Silurian. Niagara Group. CLOSTEROCRINUS, Hall, 1852. C. ELONGATUS, Hall, Palojont. New York, Vol. 2, p. 179, PI. A, 41, fig. 2, a - f. Silurian. Clinton Group. OF ARTS AND SCIENCES. 289 COD ASTER, McCoy. C. ALTERNATUS, Lyon, Gcol. Survey of Kentucky, Vol. 3, p. 493, PL 3, fig. 3, a, b. Devonian. Beargrass Creek, Ky. C. Americanus, Shumard, Trans. Acad. St. Louis, 1858, Vol. 1, No. 2, p. 239. Devonian. Falls of the Ohio. C. Kentdckiensis, Shumard, 1. c. PL 9, fig. 5. Suhcarhoniferous. See Pentremites Kentuckieusis. C. PYRAMID ATUS, Shumard, L c. p. 238, PL 9, fig. 1, a- e. Devo- nian. Beargrass Creek and Falls of the Ohio. COMAROCYSTITES, Billings, 1854, Geol. Survey of Canada, Palasont., Dec. III. p. Gl. Canad. Journ. Vol. 2, p. 269. GeoL Survey Rep., 1856, p. 288. C. PTJNCTATUS, Billings, 1. c. PI. 5. Silurian. Trenton limestone. CYATHOCRINUS, Miller, 1821. C. BDLLATUS, Hall, lowa. Vol. 1, p. 624, PL 28, fig. 1, a. Suh- carhoniferous. Keokuk limestone. C. COKNUTUS, Owen and Shumard, Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 591, PL 5 A, fig. 8, a, b. Suh- carhoniferous. Burlington, Iowa. C. DivARiCATUS, Hall, Iowa, Vol. 1, p. 554, PL 9, fig. 5. Suhcar- honiferous. Burlington limestone. C. (?) FLOREALis, Yandell and Shumard, Contributions, p. 24, PL 1, fig. 1. Suhcarhoniferous. Greyson Co., Kentucky. C. GRAULIFERUS, Shumard, Red River, p. 199. Suhcarhoniferous. C. iNTERMEDius, Hall, lowa. Vol. 1, p. 627, PL 28, fig. 10. Suh- carhoniferous. Keokuk limestone. C. lowENSis, Owen and Shumard, Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 591, PL 5 A, fig. 11, a-c. Suh- carhoniferous. Burlington, Iowa. C. MAGisTER, Hall, Iowa, Vol. 1, p. 628, PL 28, fig. 2, a, b, 3, a, b. Suhcarhoniferous. Keokuk limestone. C. MALVACEUS, Hall, Iowa, Vol. 1, p. 554, PL 9, fig. 4, a, b. Suh- carhoniferous. Burlington limestone. C. (?) 31 ANiFORMis, Yandell and Shumard, Contributions, p. 25, fig. 2. Suhcarhoniferous. Greyson Co., Kentucky. C. PENTALOBUS, Hall, lowa. Vol. 1, p. 687, PL 25, fig. 5, a, b. Suhcarhoniferous. Kaskaskia limestone. VOL. IV. 37 290 PROCEEDINGS OF THE AMERICAN ACADEMY C. PROTUBERANS, Hall, lowa, Vol. 1, p. 626, PI. 28, fig. 9. Suh- carhoniferous. Keokuk limestone. C. PTRiFORMis, Sill. Journ., 1st Series, Vol. 48, p. 314. Silurian. Lockport, New York. C. RAMOSUS, (?) King, Perm. Fossils, PI. 6, fig. 15-21. Swallow and Hahn, Rocks of Kansas, 1858, in Trans. Acad. St. Louis, p. 186. Permian rocks of Kansas. C. ROTUNDATUS, Hall, lowa. Vol. 1, p. 555, PI. 9, fig. 7, a, b. Suhcarhoniferous. Burlington limestone. C. SPURius, Hall, Iowa, Vol. 1, p. 625, PI. 28, fig. 78. Suhcarhon- iferous. Keokuk limestone. C. STELLATUS, Hall, 1. c. p. 623, PI. 16, fig. 3, 8. Troost, Monogi-. and Proceedings. Suhcarhoniferous. Keokuk limestone. C. TUMiDUS, Hall, Iowa, Vol. 1, p. 624, PI. 18, fig. 1, b, c. Suh- carhoniferous. Keokuk limestone. CYCLOCYSTOIDES, Billings and Salter, 1858. Silurian. From the lower and middle Silurian rocks of Canada. C. Davisi (Salter), Billings, Geo!. Survey of Canada, Palaeont., Dec. III. p. 89. Silurian. C. Halli, Billings and Salter, Geol." Survey of Canada, Palaeont., Dec. III. p. 86. Silurian. Trenton limestone. DENDROCRINUS, Hall, 1852. D. LONGiDACTYLTJS, Hall, Palajont. New York, Vol. 2, p. 193, PI. 43, fig. 1, a-k; PL, 42, fig. 7, a, b. Silurian. Niagara group. DICHOCRINUS, Munster, 1839, D. CORNIGERUS, Shumard, Trans. Acad. St. Louis, Vol. 1, No. 1, p. 72, PI. 1, fig. 1, a - d. Suhcarhoniferous. Buzzard Roost, Alabama. D. OVATUS, Owen and Shumard, Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 590, PI. 5 A, fig. 9, a, b. Suhcarhon- iferous. Burlington, Iowa. D. PROTUBERANS, Hall, lowa, Vol. 1, p. 689, PI. 25, fig. 7. Suh- carhoniferous. Kaskaskia limestone. D. SEXLOBATUS, Shumard, Trans. Acad. St. Louis, 1857, Vol. 1, No. 1, p. 73, PI. 1, fig. 3, a-c. Suhcarhoniferous. Archi- medes limestone. OF ARTS AND SCIENCES. 291 D. SIMPLEX, Shuraard, 1. c. p. 74, PI. 1, fig. 2, a, b. Hall, Iowa, Vol. 1, p. 654, PI. 22, fig. 12, a, b. Siibcarboniferous. Archi- medes limestone, Warsaw limestone. D. STRiATDS, Owen and Shumard, Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 590, PI. 5 A, fig. 10, a, b. Suh- carboniferoiis. Burlington, Iowa. DOLATOCRINUS, Lyon, 1857. D. LACUS, Lyon, Geol. Survey of Ken., Vol. 3, p. 482, PI. 4, fig. 2, a - c. Devonian. Beargrass Creek ; Falls of the Ohio. DORYCRINUS. Vide Actinocrinus. ECHINOENCRINITES, ll. von Meyer, 1826. E. ANATiFORMis, Hall, Pala3ont. New York, Vol. 1, p. 89, PI. 29, fig. 4, a- f. Silurian. Trenton limestone. ECHINOSPHERITES, Wahlenberg, 182L E. ? Hall, in Foster and Whitney's Rep. Superior, Part 11. p. 208, PI. 25, fig. 3, a, b. Silurian. EDRIOASTER, Billings, 1858. Cyclaster, Geol. Survey of Can- ada, Rep. 1856, p. 292. E. BiGSBYi, Billings, Geol. Survey of Canada, Palteont., Dec. III. p. 82. Cyclaster Bigshyi, Survey Rep. 1856, p. 293. Silu- rian. Trenton limestone. ELiECRINUS. F^We Nucleocrinus. ELEUTHEROCRINUS, Yandell and Shumard, 1856. E. Cassedayi, Y^'andell and Shumard, Proceed. Acad. Nat. Sci. Phil., Vol. 8, p. 74, PI. 2, fig. 1-5. Devonian. Beargrass Creek, near Louisville, Kentucky. EUCALY^PTOCRINUS, Goldfuss (Agas.), 1834. E. c^LATUS, Hall, Palajont. N. York, Vol. 2, p. 210, PI. 47, fig. 4, a-e. Hypanthocrinites ccelatus, Hall, Geol. Rep. 4th District, 1843, p. 113, fig. 1. Silurian. Niagara group. E. DECORUS, Hall, Palajont. N. York, Vol. 2, p. 207, PI. 47, fig. l,2a-h, 3a-d. Hypanthocrinites decorus, Phillips, Mur- chison, Sil. Syst., 1839, p. 672, PI. 17, fig. 3. H. decorus, Hall, 1843, Geol. Rep. 4th Dist. N. York, p. 113, fig. 2, 3. Compare H. coelatus ut supra. Silurian. Niagara group. E. PAPULOSUS, Hall, Palajont. N. York, Vol. 2, p. 211, PI. 47, fig. 5, a, b. Silurian. Niagara group. 292 PROCEEDINGS OF THE AMERICAN ACADEMY FORBESIOCRINUS, De Koninck and Lehon, 1854. F. Agassizi, Hall, Iowa, Vol. 1, p. 630. Suhcarhoniferous. •F. GiDDiNGSii, Hall, Iowa, Vol. 1, p. 633, PI. 17, fig. 2-4. Sub- carboniferous. Keokuk limestone (?). F. Meeki, Hall, Iowa, Vol. 1, p. 631, PI. 17, fig. 3. Suhcarhon- iferous. Keokuk limestone. F. Shumardianus, Hall, Iowa, Vol. 1, p. 671, PL 17, fig. 1. Suh- carhoniferous. St. Louis limestone. F. Whitfieldi, Hall, Iowa, Vol. 1, p. 632. Suhcarhoniferous. Keokuk limestone. F. WoRTHENi, Hall, Iowa, Vol. 1, p^ 632, PI. 17, fig. 5. Suhcar- honiferous. Keokuk limestone. GLYPTOGRINUS, Hall, 1852. G. DECODACTYLUS, Hall, PaliKont. N. York, Vol. 1, p. 281, PI. 77, fig. 1 ; PI. 78, fig. 1. Silurian. Hudson River group. G. • FiMBRiATUS, Shumard, Geol. Surv. Missouri, Pt. 2, 1855, p. 194, PI. A, fig. 8, a - c. Silurian. Cape Girardeau limestone. G. PLUMOSUS, Hall, Palfeont. N. York, Vol. 2, p. 180, PI. A, 41, fig. 3, a — g. Actinocrinus phimosus. Silurian. This spe- cies is made out entirely from the fingers and tentacula. G. ? Hall, Palaiont. N. York, Vol. 2, p. 181, PI. A, 41, fig. 4. Silurian. Clinton group. GLYPTOCYSTITES, Billings, 1854, Canadian Journ., Vol. 2, p. 215. G. MULTiPORUS, Geol. Survey of Canada, Palajont., Dec. III. p. 54, PI. 3 ; Canad. Journ., Vol. 2, p. 215; Rep. 1856, p. 281. Silurian. Lower Silurian. * G. LoGANi, Geol. Surv. Canada, Palfeont., Dec. III. p. 59, PI. 4, fig. 1, a-h. Rep. 1856, p. 282. Silurian. Trenton limestone. G. LoGANi var. gracilis, I. c. p. 59, PI. 4, fig. 2. Silurian. Trenton limestone. G. FoRBESi, Geol. Survey of Canada, Palasont., Dec. III. p. 59, PI. 4, fig. 3. Silurian. Chazy limestone. GLYPTORASTER, Hall, 1852. G. BRACHiATDS, Hall, Paloiont. N. York, Vol. 2, p. 187, PI. 41, fig. 3, a, b. Silurian. Niagara group. GONIASTER, Agassiz, 1834. G. sp. indet., Graham, Anthony, and James, Sill. Journ., 2d Series, Vol. 1, p. 441. Silurian. Cincinnati, Ohio. OF ARTS AND SCIENCES. " 293 GRAPHIOCRINUS, De Koninck and Lehon, 1854. G. 14-BRACHiALis, Lyoii, Geol. Survey of Kentucky, Vol. Ill, p. 477, PI. 1, fig. 1, 2 a, b. Suhcarhoniferous. Near base of Millstone Grit, Crittenden Co., Kentucky. HEMICYSTITES, Hall, 1852. H. PARASITICA, Hall, Paloeont. N. York, Vol. 2, p. 246, PI. 51, fig. 18, 19, 20, 20'. Silurian. Niagara group. HETEROCYSTITES, Hall, 1852. H. ARMATus, Hall, PalfBont. N. York, Vol. 2, p. 229, PI. 49, A, fig. 3, a - c. Silurian. Niagara group. HETEROCRINUS, Hall, 1847. H. (?) GRACILIS, Hall, Palceont. N. York, Vol. 1, p. 280, PI. 76, fig. 3, a, b. Silurian. Hudson River group. H. HETERODACTTLUS, Hall, Palseont. N. York, Vol. 1, p. 279, PL 76, fig. 1, a-o. Silurian. Hudson River group. H. SIMPLEX, Hall, PaliBont. N. York, Vol. 1, p. 280, PI. 76, fig. 2, a — d. Silurian. Hudson River grovip. HOMOCRINUS, Hall, 1852. H. CYLiNDRicus, Hall, PalfEont. N. York, Vol. 2, p. 186, PI. 41, fig. 2, a - c, 3, a - c. Silurian. Niagara group. H. PARVUS, Hall, PalfEont. New York, Vol. 2, p. 185, PL 41, fig. 1, a-f. Silurian. Niagara group. H. POLYDACTTLUS, Shumard, Trans. Acad. St. Louis, VoL 1, No. 1, p. 78, PL 1, fig. 6, a, b. Cyathocrinites, Chrysty's Letters, PL 1, fig. 7, PL 3, fig. 1. Silurian. Hudson River group, Richmond, Indiana. ICHTHYOCRINUS, Conrad, Journ. Acad. Nat. Sci. Philad., Vol. 8, p. 279. I. BuRLiNGTONENSis, Hall, lowa, Vol. 2, p. 557, with diagram. Suhcarhoniferous. Burlington limestone. I. (?) Clintonensis, Hall, Palteont. New York, VoL 2, p. 181, PL A, 41, fig. 5. Silurian. This species is predicated upon • fragments of the arms alone. I. LJEVis, Conrad, Journ. Acad. Nat. Sci. Philad., VoL 8, p. 279, PL 15, fig. 16. I. Icevis, Hall, Palajont. N. Y^ork, VoL 2, p. 196, PL 43, fig. 2, a- h. Silurian. Niagara group. I. TiAR^FORMis, Hall, lowa. Vol. 1, p. 558, with diagram. Suh- carhoniferous. White's Creek, Tennessee. 294 PKOCEEDINGS OF THE AMERICAN ACADEMY LECANOCRINUS, Hall, 1852. L, CALicuLUS, Hall, Palceont. N. York, Vol. 2, p. 203, PI. 46, fig. 3, a, b. Silurian. Niagara group. L. MACROPETALUS, Hall, Paljeont. N. York, Vol. 2, p. 199, PI. 45, fig. l,a-h. Silurian. Niagara group. L. ORNATUS, Hall, Palfcont. N. York, Vol. 2, p. 201, PI. 44, fig. 2, a - m. Silurian, Niagara group. L. SIMPLEX, Hall, Palieont. N. York, Vol. 2, p. 202, PI. 46, fig. 2, a - e. Silurian. Niagara group. LEPOCRINITES, Mather, 1830. L. Gebhardi, Mather, Geol. N. York, p. 347. Silurian. Pen- tamerus limestone. LYRIOCRINUS, Hall, 1852. L. DACTYLus, Hall, PaliEont. N. York, Vol. 2, p. 197, PL 44, fig. 1, a — g. Marsupiocrinites dactylus, Hall, Geol. Rep. 4th Dist., p. 114, fig. 4, p. 113, 1843. Silurian. Niagara group. MACROSTYLOCRINUS, Hall, 1852. M. ORNATUS, Hall, Pala^ont. N. York, Vol. 2, p. 201, PI. 46, fig. 4, a - g. Silurian. Niagara group. MALOCYSTITES, BilHngs, 1858. M. Bawandi, Billings, Geol. Survey of Canada, Palaiont., Dec. III. p. 66, PI. 7, fig. 1, a - i. Silurian. Chazy limestone. M. Mdrchisoni, Billings, 1. c. p. 67, PI. 7, fig. 2, a - c. Silurian. Chazy limestone. MARSUPIOCRINITES. Vide Lyriocrinus. MEGISTOCRINUS, Owen and Shumard, 1852. Hall, Iowa, Vol. 2, p. 479, makes it a subgenus of Actinocrinus. "We doubt if it is a subcarboniferous fossil. M. EvANSi, Owen and Shumard, Journ. Acad. Nat. Sci. Philad., Vol. 2, Part 1, p. 68 ; Geol. Survey of Wisconsin, Iowa, and Minnesota, 1852, p. 594, PI. 5 A, fig. 3, a, b. Subcarbon- iferous (?). M. LATUS, Hall, Iowa, Vol. 1, p. 480, PI. 1, fig. 1, a, b. Devonian. Hamilton group. MELOCRINITES, Goldfuss (Agas.), 1834. M. scuLPTus, Hall, Pateont. N. York, Vol. 2, p. 228, PI. 49 A, fig. 2, a- d. Silurian. Niagara group. OF ARTS AND SCIENCES. 295 MELONITES, Owen and Norwood, 1846. M. MULTiPORA, Owen and Norwood, Sill. Journ., 2d Series, Vol. II, p. 225, with figure. Remarks on same, Engelmann in Vol. 3, p. 124. Sicbcarhoniferous. St. Louis Limestone. This fossil has since been restored to Palcechinus multipora. MYELODACTYLUS, Hall, 1852. M. BRACHiATUs, Hall, Palojont. N. York, Vol. 2, p. 232, PI. 45, fig. 7, a — e. Silurian. Fragments of arms. M. CONVOLUTUS, Hall, Palseont. N. York, Vol. 2, p. 192, PL 42, fig. 5 a, b, 6 a - h. Silurian. Niagara group. NUCLEOCRINUS, Conrad, 1842. Olivanites, Troost's List in Proceed. Amer. Assoc. 1849. El^acrinus, Roemer, 1852. N. ELEGANS, Conrad, Journ. Acad. Nat. Sci. Philad., Vol. 8, Part 2, p. 235. Devonian. Hamilton group. N. Halli, Conrad, Geol. 3d Dist. New York, p. 163. Devonian. Hamilton group. N. Verneuili, Troost, List and Proceedings. Pentremites Ver- neuili, 6th Rep. Tennessee, 1841. Beadle (D'Orb.), Prodrom, 1, p. 102. Elceacrinus Verneuili, Roemer, Monograph, Blastoid. 1852, p. 59, PI. 5, fig. 1, a - e. Olivanites Verneuili, Lyon, Geol. Survey of Kentucky, Vol. 3, p. 490. Devonian. Falls of the Ohio ; Beargrass Creek. N. AFGULARis, Lyon, Geol. Survey of Kentucky, Vol. 3, p. 492, PI. 5, fig. 2, a, b. Devonian. Beargrass Creek. PAL^ASTER, Hall, 1852. P. Niagarensis, Hall, Paljeont. N. York, Vol. 2, p. 247, PI. 51, fig. 21, 22, 23. Siluria7i. Niagara group. PAL^OCIDARIS. Vide Archeocidaris. PAL^OCYSTITES, Billings, 1858, Geol. Survey of Canada, Palse- ont., Dec. HL p. 68. P. Chapmani, Billings, Geol. Survey of Canada, Palteont., Dec. III. p. 71. Silurian. Lower vSilurian rocks of the age of the Trenton and Chazy limestones and Hudson River group. P. Daws ONI, Billings, Geol. Survey of Canada, Palaeont., Dec. III. p. 70. Silurian. Chazy limestone. P. TENUiRADiATUS, Billings, Geol. Survey of Canada, 1. c. p. 69. Actinocrinus tenuiradiatus. Hall, Palaeont. N. York, Vol. 1, p. 18, PI. 4, fig. 8, 9. Silurian. Chazy limestone. 296 PROCEEDINGS OF THE AMERICAN ACADEMY PALASTERINA, McCoy, 1851, British Foss., p. 59. P. STELLATA, BilHngs, Geol. Survey of Canada, Palteont., Dec. III. p. 76, PI. 9, fig. 1, a, 15. Geol. Rep. 1856, p. 290. Silurian. Trenton limestone. P. RUGOSA, Billings, 1. c. p. 77, PI. 9, fig. 2, a - e. Geol. Rep. 1856, p. 291. Silurian. Hudson River group. PENTREMITES, Say, 1820. Pentatremitites, Bronn, Index, and European authors genei'ally. P. BiPTRAMiDALis, Hall, lowa, Vol. 1, p. 607, PI. 15, fig. 2. Suhcarboniferous. Keokuk limestone. P. CERViNus, Hall, Iowa, Vol. 1, p. 690, PI. 25, fig. 11, a, b. Suh- carhoniferous. Kaskaskia limestone. P. Cherokeus, Hall, Iowa, Vol. 1, p. 691, PI. 25, fig. 12, a, b; P. Cherokeus, Troost, MSS. and Cat. P. sulcatus, Rcemer, Monograph. Suhcarhoniferous. Kaskaskia limestone. P. CONOID eus. Hall, Trans. Albany Inst., Vol. 4 ; Hall, Iowa, Vol. 1, p. 655, PI. 22, fig. 8, 9, 10. Suhcarhoniferous. Warsaw limestone. P. CURTUS, Shumard, 1855, Geol. Survey of Missouri, Part 2, p. 187, PI. B, fig. 3, a, b. Suhcarhoniferous. Archimedes limestone. P. DECUSSATUS, Shumard, Trans. Acad. St. Louis, 1858, Vol. 1, No. 2, p. 242, PI. 9, fig. 6, a, b. Suhcarhoniferous. Button- Mould Knob. P. ELONGATUS, Shumard, 1855, Geol. Survey of Missouri, 2d Rep. Part 2, p. 187, PI. B, fig. 4. Suhcarhoniferous. Encrinital limestone. P. FLOREALis, Say, Journ. Acad. Nat. Sci. Philad., Vol. 4, No. 9 ; Sowerby, Zool. Journ., Vol. 2, p. 311, PI. 2, fig. 2. ■Suhcar- honiferous. See P. Godoni. P. GLOBOSUS, Troost, MSS.; Hall, Iowa, Vol. 1, p. 695, PI. 25, fig. 17. Suhcarhoniferous. Kaskaskia limestone. P. Godoni. Kentuchj Asterial fossil, Parkinson, 1808, Org. Rem., Vol. 2, p. 235, PL 13, fig. 36, 37. Encrina Godoni, De France, 1818, Diet. Sci. Nat., Tom. 14. Encrinites fiorealis, Schlotheim, 1820, Pet. Got. Pentremites fiorealis. Say, 1822, Sow. Zool. Journ., Vol. 2, p. 311, PI. 11, fig. 2; Troost, Tr. Geol. Soc. Pennsylvania, Vol. 1, p. 224, PI. 10, fig. 8. OF ARTS AND SCIENCES. 297 Pentatremitites jlorealis, Roemer, 1852, Monogr. Blast., p. 33, Taf. 1, fig. 1 - 4 ; Taf. 2, fig. 8. P. Godoni, Hall, Iowa, Vol. 1, p. 692, PI. 25, fig. 13, a, b. Suhcarhoniferous. Kaskaskia limestone ; Chester, Illinois ; Mt. Sano, Alabama, &c. P. Grosvenori, Shumard, Trans. Acad. St. Louis, Vol. 2, No. 2, 1858, p. 240, PI. 9, fig. 2, a - d. Suhcarhoniferous. Archi- medes limestone. P. GRANULATUS, Rcemer, 1852, Monogr. Blast., p. 43, Taf. 3, fig. 13. Granatocriniis cidariformis^ Troost, 1849, List and Proceed., p. 62. Suhcarhoniferous. Allen Co., Kentucky. P. (CoDASTER ?) Kentuckiensis, Shumard, Trans. Acad. Sci. St. Louis, Vol. 2, No. 2, p. 239, PI. 9, fig. 5. Suhcarhoniferous. Encrinital limestone. P. KoNiNCKiANA, Hall, Trans. Albany Inst., Vol. 4, 1856 ; Hall, Iowa, Vol. 1, p. 656, PI. 22, fig. 11, a -c. Suhcarhoniferous. Archimedes limestone. P. LANTERNiFORMis, Owcn and Shumard, 1850, Jour. Acad. Nat. Sci. Philad., Vol. 2, p. 66, PI. 7, fig. 15. P. ohliquatus, Roemer, 1852, Monogr. Blast, p. 47, Taf. 3, fig. 11, a, b ; Owen and Shumard, Geol. Survey of Iowa, Wisconsin, and Minnesota, p. 592, PI. 5 A, fig. 15. Suhcarhoniferous. Archimedes limestone. P. LiNEATUS, Shumard, Trans. Acad. Nat. Sci. St. Louis, Vol. 2, No. 2, p. 241, PI. 9, fig. 3, a, b. Suhcarhoniferous. Encri- nital limestone. P. Melo, Owen and Shumard, 1850, Journ. Acad. Nat. Sci. Philad., New Series, Vol. 2, p. 65, PI. 7, fig. 14, a-c. Suhcarhon- iferous. Encrinital limestone. P. NoRWOODi, Owen and Shumard, 1. c. p. 64, PL 7, fig. 13, a-c. Suhcarhoniferous. Encrinital limestone. P. OVALIS, Say, Sill. Journ. 1st Series, Vol. 2, p. 36 (non Roemer). Silurian. Lockport, New York. P. OBESUS, Lyon, 1857, Geol. Survey of Kentucky, Vol. 3, p. 469, PI. 2, fig. 1, a-d; Hall, Iowa, Vol. 1, p. 695, PI. 25, fig. 15. Suhcarhoniferous. Iowa, Illinois, and Kentucky. P. PTRiFORMis, Say, 1822, Journ. Acad. Nat, Sci. Philad., Vol. 4, p. 294 ; Troost, Trans. Geol. Soc. Penn., Vol. 1, p. 288, PI. 10 ; Sowerby, Zool. Journ., Vol. 2, p. 315 ; Roemer, Monogr. VOL. IV. 38' 298 PROCEEDINGS OF THE AMERICAN ACADEMY Blast., p. 84, Taf. 2, fig. 9, a -c; Hall, Iowa, Vol. 1, p. G93, PI. 25, fig. 1 6. Pentremites, n. sp., D. D. Owen, Sill. Journ., Vol. 43, 1824, p. 20, fig. 3. Suhcarboniferous. Kaskaskia limestone, Iowa. P. RcEMERi, Sliumard, 1855, 2d Rep. Geol. Missouri, Part 2, p. 186, PI. B, fig. 2, a- d. Devonian. Chemung group. P. Reinwardtii, Troost, Trans. Geol. Soc. Penn., Vol. 1, p. 224, PL X. Pentatremitites Reinwardtii, Roemer, 1852, Monogr. Blast., p. 52, PI. 3, fig. 18, a-c. F. Roemer, Leonhard and Bronn, Jahrb., 1848, p. 296. Silurian. Lower Helderberg group. P. Sati, Sliumard, 1855, 2d Rep. Geol. Survey of Missouri, Part 2, p. 185, PI. B, fig. 1, a— d. Svhcarhoniferous. Encrinital limestone. P. STELUFORMis, Owen and Sliumard, 1850, Journ. Acad. Nat. Sci. Philad., New Series, Vol. 2, p. 67, PI. 7, fig. 16, a, b ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 593, PI. 5 A, fig. 16, a, b. Suhcarboniferous. Encrinital limestone. P. SUBTRUNCATUS, Hall, lowa, Vol. 1, p. 485, PI. 1, fig. 3. Devo- nian. Hamilton group. P. SULCATUS, Roemer, 1852. Pentatremitites sulcatus, Monogr. Blast., p. 34, Taf. 3, fig. 10, a-c. Suhcarboniferous. Ar- chimedes limestone. P. STJiMETRicus, Hall, lowa, Vol. 1, p. 694, PI. 25, fig. 14. Sub- carboniferous. Kaskaskia limestone. P. TRUNCATA, Conrad, Proceed. Acad. Nat. Sci. Philad., Vol. 1, p. 334. Suhcarboniferous. P. Verneuili. See Ducleocrinus Verneuili. P. WoRTHENi, Hall, Iowa, Vol. 1, p. 606, PI. 15, fig. 1. Suhcar- boniferous. Keokuk limestone. PETRASTER, Billings, 1858, Geol. Survey of Canada, Palasont., Dec. III. p. 79. Silurian. Trenton limestone. P. RiGiDUS, Billings, 1. c. p. 80, PI. 10, fig. 3. Palasterina rigidus, Geol. Rep. 1856, p. 291. Silurian. Trenton limestone. PLATYCRINUS, Miller, 1821. P. Americanus, Owen and Shumard, Journ. Acad. Nat. Sci. Philad., 2d Series, 1851, p. 89, PI. 11, fig. 1, a, b ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 594, PI. 5 B, fig. 1, a, b. Subcarboniferoiis. Burlington limestone. OF ARTS AND SCIENCES. 299 P. BuRLiNGTONENSis, Owen and Shuraard, 1. c. Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 589, PL 5 A, fig. 5. Suhcarhoniferous. Burlington limestone. P. CANICULATUS, Hall, lowa, Vol. 1, p. 539. Suhcarhoniferous. Burlington limestone. P. CAVUS, Hall, Iowa, Vol. 1, p. 527, PI. 8, fig. 1, a, b. Compare P. corrugatus, Owen and Shumard, Geol. Survey of Iowa, Wisconsin, and Minnesota, p. 589, PI. 5 A, fig. 2, a - d. Suh- carhoniferous. Burlington limestone. P. CORRUGATUS, Owen and Shumard, 1. c. See P. cavus. Suh- carhoniferous. Burlington limestone. P. DiscoiDEUS, Owen and Shumard, Journ. Acad. Nat. Sci. Philad., New Series, Vol. 2 ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 581, PI. 5 A, fig. 1 ; Hall, Iowa, Vol. 1, p. 535, PI. 8, fig. 8, a, b. Suhcarhoniferous. Burlington limestone. P. EXSERTUS, Hall, Iowa, Vol. 1, p. 539. Suhcarhoniferous. Bur- lington limestone. P.NODOBRACHIATUS, Hall, 1. c. p. 542, diagram. Suhcarhonifer- ous. This may be the young of some known species. P. NODULOSUS, Hall, 1. c. p. 541. Suhcarhoniferous. Burlington limestone. P. NUCLEiPORMis, Hall, lowa. Vol. 1, p. 540, diagram. Suhcar- honiferous. Burlington limestone. P. piLEiFORMis, Hall, Iowa, Vol. 1, p. 529, PI. 8, fig. 3, a, b. Suh- carhoniferous. Burlington limestone. P. PLANUS, Owen and Shumard, Journ. Acad. Nat. Sci. Philad., New Series, Vol. 2, 1851 ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 587, PI. 5 A, fig. 4 ; Hall, Iowa, Vol. 1, p. 533, PI. 8, fig. 6, a, b. Suhcarhoniferous. Burlington limestone. P. pcECiLLiFORMis, Hall, lowa, Vol. 1, p. 528, PI. 8, fig. 2, a, b. Suhcarhoniferous. Burlington limestone. P. Saffordi, Troost, MSS. ; Hall, Iowa, Vol. 1, p. 634, PI. 18, fig. 5, 6. Suhcarhoniferous. Keokuk limestone. P. Sar^, Hall, Iowa, Vol. 1, p. 673, PI. 17, fig. 4. Suhcarhon- iferous. Keokuk limestone. P. SCULPTUS, Hall, Iowa, Vol. 1, p. 536, PI. 8, fig. 2. Suhcarhon- iferous. Burlington limestone. 300 PROCEEDINGS OF THE AMERICAN ACADEMY P. Shumardianus, Hall, Iowa, Vol. 1, p. 532, PI. 8, fig. 5. Sub- carboniferous. Burlington limestone. P. SUBSPINOSUS, Hall, Iowa, Vol. 1, p. 536, PI. 8, fig. 9, 10. Sub- carboniferoiis. Burlington limestone. P. TUBEROSUS, Hall, Iowa, Vol. 1, p. 534, PI. 8, fig. 7, a, b. Sub- carboniferous. Burlington limestone. P. TRUNCATULUS, Hall, lowa, Vol. 1, p. 538, Diagram. Subcar- boniferous. Burlington limestone. P. TRUNCATUS, Hall, lowa, Vol. 1, p. 537, Diagram. Subcarbon- , iferous. Burlington limestone. P. WoRTHENi, Hall, Iowa, Vol. 1, p. 530, PI. 8, fig. 4. Subcar- boniferous. Bui'lington limestone. P. Yandelli, Owen and Sliumard, Journ. Acad. Nat- Sci. Philad. ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 587, PI. 5 A, fig. 6, a, b. Subcarboniferous. Burlington, Iowa. PLEUROCYSTITES, Billings, 1854, Canad. Journ., Vol. 2, p. 250 ; Survey Rej). 1857, p. 284. Silurian. Lower Silurian. » P. Anticostiensis, Billings, Geol. Survey of Canada, Palteont., Dec. III. p. 52, PI. 1, fig. 3. Silurian. Hudson River group. P. ELEGANS, Billings, Geol. Survey of Canada, Palaeont., Dec. HI. p. 51, PI. 2, fig. 2, a-d. Siluria7i. Trenton limestone. P. EXORNATUS, BiUiugs, Geol. Survey of Canada, Palajont., Dec. III. p. 52. Silurian. Trenton limestone. P. FiLiTEXTUS, BiUings, Geol. Survey of Canada, Palteont., Dec. III. p. 50, PI. 2, fig. 1, a, b. Silurian. Trenton limestone. P. ROBUSTUS, Billings, Geol. Survey of Canada, Palnaont., Dec. III. p. 49, PI. 1, fig. 2, a. Silurian. Trenton limestone. P. SQUAMOsus, Billings, Geol. Survey of Canada, Pala^ont., Dec. in. p. 49, PI. 1, fig. 1, a-d. Silurian. Trenton lime- stone. POTERIOCRINUS, Miller, 1821. P. ALTERNATUS, Hall, PaL«ont. N. York, Vol. 1, 1847, p. 83, PI. 28, fig. 1, a - f. Silurian. Trenton limestone. P. CALYCULUS, Hall, Iowa, Vol. 1, p. 553, PL 9, fig. 6, a, c. Sub- carboniferous. Burlington limestone. P. GRACILIS, Hall, Palajont. N. York, Vol. 1, 1847, p. 84, PI. 28, fig. 2, a - f. Silurian. Trenton limestone. OF ARTS AND SCIENCES. 301 P. HEMisPHJERicus, Sliumard, Trans. Acad. Sci. St. Louis, Vol. 1, No. 2, 1858, p. 221. Coal measures. P. LONGiDACTTLUS, Sliumard (non Austin, Crin., PI. 11. Vide P. Missouriensis. Snhcarhoniferous. St. Louis limestone. P. Meekianus, Sliumard, Geological Survey of Missouri, Part 2, p. 188, PL A, fig. 7, a, b. Snhcarhoniferous. Encrinital limestone (?). P. Missouriensis, Sliumard, Trans. Acad. St. Louis, 1857, Vol. 1, No. 1, p. 80. P. longidactylus, Geol. Survey of Missouri, p. 188, PI. B, fig. 5, a- c. Suhcarhoniferous. Sliumard pro- poses P. 3fissouriensis instead of P. longidactylus (Austin), which he had unwittingly appropriated. * P. occiDENTALis, Owcn and Shumard, Journ. Acad. Nat. Sci. Pliilad., Vol. 2, 2d Series, 1851 ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 596, PL 5 B, fig. 5, a, b. Suhcar- honiferous. Kaskaskia limestone. P. RHOMBiFERUS, Owen and Shumard, Journ. Acad. Nat. Sci. Philad., 1851 ; Geol. Survey of Wisconsin, Iowa, and Min- nesota, p. 595, PL 5 B, fig. 2, a - c. Suhcarhoniferous. Bui"- lington limestone. P. RUGOSUS, Shumard, Trans. Acad. Sci. St. Louis, Vol. 1, No. 2, p. 223. Suhcarhoniferous. Coal measures. P. SPINOSUS, Owen and Shumard, Journ. Acad. Nat. Sci. Philad., 2d Series, VoL 2, 1851 ; Geol. Survey of Wisconsin, Iowa, and Minnesota, p. 596, PL 5 B, fig. 4. Suhcarhoniferous. Chester, Illinois, in Kaskaskia limestone ; Greyson Co., Ken- tucky. P. TUMiDUS, Owen and Shumard, Journ. Acad. Nat. Sci., 2d Series, Vol. 2, 1851 ; Geol. Survey of Wisconsin, Iowa, and Min- nesota, p. 595, PL 5 B, fig. 3, a, b. Suhcarhoniferous. Kas- kaskia limestone. PTEROTOCRINUS, Lyon and Casseday, 1859.* P. CAPiTALis. Asterocrinus capitalis, Lyon, Geological Survey of * The name Asterocrinus was given to a new genus of fossil crinoids described by Lyon. As this name had already been appropriated by Miinster, we deem it necessary to change the generic appellation to Pterotocrinus. We have, in manu- script, descriptions of several new species of this peculiar genus of Crinoidea. 302 PROCEEDINGS OF THE AMERICAN ACADEMY Kentucky, A^ol. 3, p. 472, PL 3, fig. 1, a-k. Suhcarhon- iferous. P. cORONARius. A. coronarius.) Lj'on, 1. c. p. 476, PI. 1, fig. 1, 1 a. Suhcarhonifero us. PYGORYNCHUS, Agassiz, 1839. P. GouLDi, Bouv^, Proc. Bost. Soc. Nat. Hist., Dec, 1846, p. 192. Its position (Millstone Grit) as given by M. Bouve is, we think, exceedingly doubtful. RHODOCRINUS, Miller, 1821. R. WoRTHENi, Hall, Iowa, Vol. 1, p. 556, PI. 9, fig. 8, a- c. Suh- carboniferous. Burlington limestone. SACCOCRINUS, Hall, 1852. S. SPECiosus, Hall, Palceont. N. York, Yol. 2, p. 205, PI. 46, fig. 1, a -n, fig. 2. Silurian. Niagara group. SCAPIHOCRINUS, Hall, 1858, Iowa, Vol. 1, p. 549. S. DACTTLiFORMis, Hall, lowa. Vol. 1, p. 670, PI. 17, fig. 6. Suh- carboniferous. St. Louis limestone. S. DECABRACHiATus, Hall, lowa, Vol. 1, p. 679, PI. 25, fig. 1. Subcarhoniferous. Kaskaskia limestone. S. DiCHOTOMUS, Hall, Iowa, Vol. 1, p. 553, diagram. Subcarbon- iferous. Burlington limestone. S. iNTERNODius, Hall, lowa. Vol. 1, p. 679, PI. 25, fig. 2. Sub- carboniferous. Kaskaskia limestone. S. SCOPARIUS, Hall, loAva, Vol. 1, p. 680, PI. 25, fig. 3, a, b. Sub- carboniferous. Kaskaskia limestone. S. SIMPLEX, Hall, Iowa, Vol. 1, p. 551, PI. 9, fig. 10. Subcarbon- iferous. Burlington limestone. SCHIZOCRINUS, Hall, 1847. S. NODOSus, Hall, Pateont. N. York, Vol. 1, p. 81, PI. 27, fig. 1, a-h; Foster and Whitney, Lake Superior, p. 208, PI. 25, fig. 2, a — c. Silurian. Trenton limestone. S. STRiATUs, Hall, PalcTont. N. York, Vol. 1, p. 316, PI. 28, fig. 4, a — c. Silui'ian. Trenton limestone. S. sp. indet.. Hall, 1. c. p. 86, PI. 29, fig. 1. Silurian. Trenton limestone. OF ARTS AND SCIENCES. 303 SCHYPHOCRTNUS, Hall, 1847. S. HETEROCOSTALis, Hall, Palreont. N. York, Vol. 1, p. 85, PI. 28, fio;. 3, a - f. Silurian. Trenton limestone. STENASTER, Billings, 1858. Silurian. Lower Silurian. S. PULCHELLUS, Billings, Geol. Survey of Canada, Palajont., Dec. HI. p. 79, PL 10, fig. 2. Silurian. Trenton limestone. S. Salteri, Billings, 1. c. p. 78, PI. 10, fig. 1, a, b. Silurian. Trenton limestone. STEPHANOCRINUS, Conrad, 1842. S. ANGULATUS, Conrad, Joui'n. Acad. Nat. Sci. Philad., Vol. 8, p. 279, PI. 15, fig. 18; Hall, Paleeont. N. York, Vol. 2, p. 212, PI. 48, fig. 1, a-m. Silurian. Niagara shale. Lock- port. S. GEMM^FORMIS, Hall, 1. c. fig. 2, a - i. Silurian. Niagara group. SYNBATHOCRINUS, Phillips, 1836. S. DENTATUS, Owcn and Shumard, Journ. Acad. Nat. Sci. Philad., Vol. 2, 2d Series ; Idem, Geol. Sui'vey of Wisconsin, Iowa, and Minnesota, p. 597, PI. 5 B, fig. 7, a, b. Subcarbon- iferous. Burlington limestone. S. MATUTiNUS, Hall, Iowa, Vol. 1, p. 483, PI. 1, fig. 2. Devonian Hamilton group. S. SwALLOVi, Hall, Iowa, Vol. 1, p. 672, PI. 17, fig. 89. Subcar- honiferous. St. Louis limestone. S. WoRTHENi, Hall, Iowa, Vol. 1, p. 560, PI. 9, fig. 9. Subcar- boniferous. Burlington limestone. SAXOCRINUS, Phillips, 1836. S. iNTERSCAPULARis, Hall, lowa, Vol. 1, p. 482, PI. 1, fig. 3. Devonian. Hamilton group. T^NICASTER, Billings, 1858. T. CYLiNDRicus, Billings, Geol. Survey of Canada, Pala?ont., Dec. HI. p. 81, PI. 10, fig. 4, a, b. Silurian. Trenton limestone. T. SPINOSUS, Billings, 1. c. PI. 10, fig. 3, a -d. PalcBOcoma spinosa, BiUings, Geol. Survey of Canada, Rep. 1856, p. 292. Silu- rian. Trenton limestone. 304 PROCEEDIISrGS OF THE AMERICAN ACADEMY THYSANOCRINUS, Hall, 1852. T. ACULEATUS, Hall, Palaeont. N. York, Vol. 2, p. 190, PI. 42, fig. 3, a - cl. Silurian. Niagara group. T. CANALICULATUS, Hall, Pala^ont. N. York, Vol. 2, p. 189, PI. 42, fig. 2, a - d. Silurian. Niagara group. T. iMMATURUS, Hall, Palaeont. N. York, Vol. 2, p. 191, PI. 42, fig. 4, a - f. Silurian. Niagara group. . T. LiLiiFORJUS, Hall, 1. c, fig. 1, a-f. Silurian. Niagara group. VASOCRINUS, Lyon, 1857. V. SCULPTUS, Lyon, Geol. Survey of Kentucky, Vol. 3, p. 486, PI. 4, fig. 3, b - e. Devonian. Beargrass Creek, Kentucky. V. VALENS, Lyon, 1. c. fig. 3, 3 a. Devonian. Beargrass Creek, Kentucky. ZEACRINUS, Troost, MSS. (Hall).* Z. DEPRESsus, Troost, MSS.; Hall, Iowa, Vol. 2, p. 546. Siib- carhoniferous. Z. ELEGANS, Hall, Iowa, Vol. 1, p. 547, PI. 9, fig. 12. Suhcarhon- iferous. Z. iNTERMEDius, Hall, lowa, Vol. 1, p. 681, PI. 25, fig. 4. Suhcar- honiferous. Kaskaskia limestone. Z. MAGNOLi^FORMis, Troost, MSS.; Hall, I.e. pp. 684, 545, 544. Subcarboniferous. Pentremital limestone, Tennessee. Z. MANiFORMis, Hall, 1. c. p. 682, PI. 25, fig. 8. Poteriocrinus maniformis, Yandell and Shumard, Contrib., p. 24, PI. 1, fig. 2. Cyatliocrinus maniformis, Yandell and Shumard, Contributions. C. gracilis, Troost, Cat. Subcarhoniferous. Kaskaskia limestone, Illinois ; Ai'chimedes limestone, Ken- tucky. Z. RAMOSUS, Hall, Iowa, Vol. 1, p. 548, PI. 9, fig. 3. Subcarbon- iferous. Burlington limestone. Z. WoRTHENi, Hall, Iowa, Vol. 1, pp. 545, 683, with diagram. Subcarhoniferous. Kaskaskia limestone. * " This genus begins its existence, so far as known, in the Burlington limestone, and continues to the Chester limestone, becoming far more abundant and extrava- gant in its forms in the latter period." — Hall. OF ARTS AND SCIENCES. 305 Foui'liundrecl and sixty-nintli meeting. September 13, 1859, — Monthly Meeting. The President in the chair. The Corresponding Secretary read a letter from M. Liou- ville, of Paris, in acknowledgment of the notice of his election as a Foreign Honorary Member. Also various letters relating to the exchanges of the Academy. Professor Peirce made a communication upon some of the laws of Astronomical Cosmology. Professor Horsford gave an account of the so-called sap- sand found in maple sugar, which he had ascertained to be a neutral tartrate of lime. Dr. B. A. Gould, Jr. laid before the Academy a circular from a committee of the American Association for the Ad- vancement of Science, addressed to the friends of Astronomy, being an appeal in behalf of a new attempt to determine the solar parallax. Dr. Beck mentioned, that while on his late tour in Europe, being in search of manuscripts of the Satyricon of Petronius Arbiter, he found, in the Bibliotheca Ricardiana at Florence, and the Bibliotheca Vaticana at Rome, two small manu- scripts of grammatical or bibliographical contents, which he believes have not yet been published. Both manuscripts bear the name Petronius Arbiter, the Vatican manuscript with the addition, " de antiquis dictionibus." The relation of this fragment to A. Gellius, Nonius, and other authors of this class, and the question whether the author has borrowed from them or from common sources, are of some interest. The fragment, although not of great importance, is of sufficient interest to justify its publication. Dr. Beck hopes to be able, from the two manuscripts and other means, to construct, with one or two exceptions, a reliable text, which he intends to append to the result of his inquiries concerning, the text and manuscripts of the Satyricon^ which he is now engaged in preparing. VOL. IV. 39 306 PROCEEDINGS OF THE AMERICAN ACADEMY Professor Gray presented the following paper : — Notes upon some Paihiacece^ collected in the South Sea Explor- ing- Expedition under Captain Wilkes. By Asa Gray, M. D. (Continued from April, 1858 : vide p. 50.) CopROSMA CALTCiNA : herbacea, repens, fere glabra ; foliis ovato- rotunclis ciliolatis breviter petiolatis ; stipulis obsoletis ; floribus sub- solitariis subsessilibus 4 - 5-meris ; calycis lobis ovato-lanceolatis foli- aceis ovario obovato fequilongis corolla tubulosa vix dimidio breviori- bus. Hedyotis repens, Clos in Gay, Fl. S,p. 208. — Chili, comnion in the province of Yaldivia, &c., C. Gay. — It is odd that this jilant, Laving been correctly described, except that the dry drupe is called a capsule, should yet have been mistaken for a Hedyotis. It really forms a connecting link between Nertera (of which it has the habit) and Go- prosma ; but is peculiar for its large calyx-lobes, which persist on the young fruit. According to Clos, it is monoecious or dioecious, which, with the developed lobes of the calyx, would fix the plant in Coprosma. But the only flower upon my specimen is hermaphrodite ! 7. Corrections and Additions to the former article. Psycliotria parvida, p. 13, is only a form of P. seypens, Linn., as ap- pears upon a comparison with specimens from Hong Kong, and from the Loo Choo and Bonin Islands. P. turhinata, p. 12. — Mr. Bentham has distributed No. 2086 of Spruce's Amazon collection under the same name ; but as the flowers of that plant seem equally to be unknown, it may be best to retain the name for the Feejean species, which can hardly be any else than a Psycliotria. Among some Polynesian RuliacecB, collected by Mr. Milne in the recent cruises of the Herald, British surveying vessel, and placed in my hands by Dr. Hooker, I notice two species which may be referred to the genus Galycosia, p. 15, although their flowers are in loose cymes : — Calycosia pubiflora (sp. nov.) : foliis membranaceis glabris oblongo-lanceolatis acuminatis in petioluin attenuatis (4 — G-poll. longis) ; cyma laxa trichotoma calycisque tubo viscoso-pubescentibus, limbo cra- teriformi extus puberulo ; dnipa turbinata, pyrenis chartaceis intus excavatis. — Viti-levu, Feejee Islands, Mr. 3Iilne. — Limb of the calyx apparently white, half an inch in diameter. Corolla hardly exserted. OF ARTS AND SCIENCES. 307 Calycosia Milnei (sp. nov.) : glaberrima ; foHIs oblongis siiblan- ceolatisve basi attenuatis longiuscule petiolatis punctulatis (3 - 4-pollic.) ; cyma diffusa repetito-trichotoraa ; pedicellis gracilibus. — " Anuteum [Feejee Islands ?], Nov. 1853, a slender shrub, frequent on high grounds," 3Ir. Milne. 8. ScypMophora. Epitliinia of Jack has been identified by Korthals with the little- known ScypMophora of the younger Gasrtner. Jack's description ap- pears to be perfectly correct, so far as it goes (except as to the absence of stipules). But — as respects the various subsequent attempts to complete the generic character — it may be noted that the upper ovule is not pendulous from the apex of the cell, as stated by Wight and Arnott ; nor are the ovules solitary in each cell, as stated by Hasskarl ; nor is the upper ovule prematurely abortive, as Miquel describes it. The two long and narrow cells of the ovary each contain a pair of anatropous ovules, borne on slender funiculi, which are inserted on the dissepiment at the middle of the cell ; the upper one is erect, the lower one pendulous. The funiculi are more or less thickened at their apex, so as to cap the base of the ovule, as in the Guettardece generally. Not rarely all four ovules are fertilized. In the fruit each cell becomes constricted between the seeds into two imperfect locelli, one above the other. The seeds are conformed to the cavity, and are somewhat curved. In those examined, which were not perfectly mature, the albumen was almost wanting ; the cotyledons oblong, flattish, and longer than the radicle. The putamen does not readily separate into two pyrence. The corolla is contorted in sestivation, and sometimes pentamerous. The genus should perhaps be appended to the GuettardecB. 9. Bihhia. Bihlda grandijlora, Reinw., or B. australis, DC, or more properly B. tetrandra (Portlandia tetrandra of Forster), was collected at the Friendly Islands, in fine specimens, by Professor Harvey. The corolla is valvate in aestivation, as in Portlandia, but strongly reduplicate, so that the summit of the flower-bud is cruciately four-angled or winged. Stigma bilamellar ; the lobes short, oblong, and thickish. Ovules oblono;, horizontal. Testa of the immature seeds conformed to the nucleus. 308 PROCEEDINGS OF THE AMERICAN ACADEMY 10. CinchonecB. The following are two new genera of this subtribe in the collection of the South Sea Exploring Expedition ; one of them founded upon Forster's Cinchona corymhifera, the other upon new discoveries. BADUSA, Nov. Gen. Calyx tubo clavato ; limbo brevi cupulato 5-dentato persistente. Corolla hypocraterimorpha, glabra, 5-fida ; limbo tubum adasquante, lobis lineari-oblongis aestivatione contorto-imbricatis (uno exteriore), explicatis patenti-recurvis. Stamina 5, exserta : filamenta filiformia, imge basi corollge inserta, inferne villosa ; antherge lineares, dorso supra basim affixje, mox versatiles. Stylus filiformis, ramis 2 brevibus cum stigmatibus subcapitatis intus planis in clavellam angulatam congluti- natis. Ovarium biloculare. Ovula in placentis lineari-oblongis crassis plurima, anatropa, sese imbricantia, superiora adscendentia, inferiora pendula. Capsula clavato-oblonga, cartilaginea, bilocularis, polysperma, ab apice ad basim septicida. Semina ovalia, modice alata. Embryo rectus albumine carnoso paullo brevior; radicula tereti cotyledonibus ovatis longiore. Frutices sempervirentes ? Oceanici, glabri ; stipulis brevibus vaginatis ; pedunculis axillaribus apice foliatis cymoso-pluri- floris ; floribus albis. Badusa cortbibifera. Cinchona corymbifera, Forst. C. Philip- pica, Cav. ? Exostemma, R. S^ S. — Distinguished from Exosteina by the aestivation, the versatile anthers, and the inflorescence. DOLICHOLOBIUM, Nov. Gen. Calyx tubo cylindrico elongato ; limbo amplo submembranaceo cya- thiformi truncato integerrimo (rariusve sublobato) persistente. Corolla hypocraterimorpha ; limbo 4 - 5-partito, lobis oblongis obtusissimis plurinerviis aestivatione contortis. Stamina 4-5, tubo infra faucem inserta, glabra, inclusa: filamenta brevissima : antheras lineares, basifixaj, introrsum adnatce. Stylus bifidus, ramis subspathulatis sursum peta- loideo-dilatatis intus secus costam stigmatosis. Ovarium biloculare. Ovula in placentis elongatis crassis numerosissima, minuta, sursum. im- bricata, acicularia. Capsula siliquajformis, teretia, longissima (4 - 6- pollicaris), calycis limbo crateriformi seu pateriformi (fructu multoties latiori) plerumque coronata, demum septicida ? Semina creberrima, nucleo ovali, a^a angustg, utrinque in caudam simplicem longissimam sensim attenuata. Embryo in albumine parco carnoso rectus ; cotyle- OF ARTS AND SCIENCES. 309 donibus ovatis radicula infera parum brevioribus. — Frutices Vitienses ; foliis membranaceis petiolatis recte penninerviis, venulis pulchre reticu- lars ; stipulis interpetiolaxibus membranaceo-foliaceis distinctis obtusis planis plerumque caducis ; pedunculis brevibus ex axillis superioribus tri - paucifloris ; floribus majusculis ; tubo calycis et corollte (albie ?) extus pube appressa indutis. — Genus Cosmihuence affine. DoLiCHOLOBiUM OBLONGiFOLiUM {Gray,l. c.) : folus oblougis seu elongato-oblongis utrinque acutiusculis (2J-5 poll, longis) ; flore pen- tamero. — Collected at Sandal-wood Bay, Vanua-levu, one of the Feejee Islands, in fruit, in the Pacific Exploring Expedition ; after- wards, in blossom, by Mr. Milne, which afforded the materials required for characterizing the genus. DoLiCHOLOBiUM LATIFOLIUM {Gray, I. c.) : foliis latissime obovatis basi rotundatis vel obtusissimis (o - 7 poll, longis) ; flore tetramero, an semper ? — Ovolau, Feejee Islands. Coufarea of Aublet has the aestivation of the corolla imhricative (with the tube somewhat plaited), not induplicate, as stated by End- licher, who thus led Weddell to rank the genus among those with valvular or modified valvular gestivation. Endlicher has omitted to mention that the corolla is curved or unequally ventricose in the bud. In G. Mexicana the flowers are, at least sometimes, pentamerous. 11. jRandiecB. From the South Sea Islands we have three species of Stylocoryne, viz. : — Stylocortne sambucina, which must take this name because it is, as I suppose, Forster's Coffea samhucina, although one form of it is certainly Bentham's Stylocoryne pepericarpa. Stylocortne coff^oides, which I take for Forster's Goffea odo- rata. It is the Stylocoryne racemosa of Hooker and Arnott in Beech- ey's voyage (from Tahiti), but not, I suppose, of Cavanilles (from Manilla), in which the calyx is described and figured as pretty strongly 5-toothed, while in this the limb is truncate and barely denticulate. Stylocoryne Harveyi (Gray, I.e.): glaberrima; foliis chartaceis oblongis acuminatis basi in petiolum longiusculum contractis ; cymis axillai-ibus terminalibusque petiolum vix superantibus subsessilibus ; calycis limbo quadrifido, lobis triangulari-subulatis tubo vix brevioribus; coroUoa lobis 4 lineari-oblongis tubo longioribus, fauce imberbi. Aff. priEcedenti. — Feejee Islands, Prof Harvey. 310 PKOCEEDINGS OF THE AMERICAN ACADEMY GOULDIA, Nov. Gen. Calyx tubo obovato vel turbinate ; limbo brevi quadrifido. Corolla hypocraterimorpha, subcoriacea, undique glabra ; limbo quadripartito, lobis ffistivatione valvatis. Stamina 4, fauci corolltE inserta : filamenta brevissima : antherjB inclusJB, oblongo-lineares, acutie. Stylus gra- cilis, apice bifidus : stigmata filiformia, acuta, in una specie crassiora. Ovarium' biloculare. Ovula in placentis crassis, medio dissepimento utrinque insertis, plurima, parva, ampbitropa. Bacca drupacea bilo- cularis, endocarpio pergameno ; placentis spongioso-carnosis alveolatis oligo - pleiospermis. Semina angulata vel complanata, peltata, nunc in alveolis placenta3 subimmersa : testa nucleo conformis, tenui-crustacea, pellicula papuloso-reticulata. Embryo intra albumen subcartilagineum rectus ; cotyledonibus ovatis parvis radicula vix brevioribus. — Fru- tices vel arbusculre insularum ; foliis oblongis brevi-petiolatis ; stipulis brevibus utrinque integris subvaginatis ; fioribus viridulis albidisve cymosis vel subsolitariis. GouLDiA Sandwicensis. Kadua affinis, Cham. ^ Schlecht. Var. TERMiNALis. Petesia ? terminalis, Hooh S^ Am. Var. coIiiacea. Petesia ? coriacea, Hook. Sf Am. Var. hirtella. — A polymorphous species. GouLDiA RoMANzOFFiENSis. Kadua RomanzofRensis, Cham. ^ Schlecht. Petesia carnosa, Hooh. ^ Am. I have much pleasure in dedicating this genus to Augustus A. Gould, M. D., a distinguished zoologist, author of the Natural History of the Invertebrata of Massachusetts, and of the Conchology of the South Sea Exploring Expedition under Captain Wilkes. These species were taken for congeners by Chamisso and Schlechtendal, who included them in their genus Kadua, and afterwards, quite independently, by Hooker and Arnott, who referred them to the much-vexed or facti- tious genus Petesia. On the whole, they appear to be properly asso- ciated, although the differences between them are not unimportant. G. Sandwicensis is more related to Stylocoryne. G. Romanzoffiensis, with its distinctly vaginate, though very short, and conpetiolar stipules, and with the large, pyriform, whitish, drupaceous berry opening at maturity at the naked apex by a round hole or short chink, through which it may discharge the seeds, is really allied to Kadua. But besides the truly baccate or drupaceous fruit, with the limb of the calyx obliterated, the few and peltate seeds are quite different. On OF ARTS AND SCIENCES. 311 the other hand, the jestivation of the corolla and the bifid style per- fectly distinguish this genus from Stylocoryne, as does the former char- acter from FerneUa. As to Petesia, that genus is known to have been founded upon species of Roiideletia, to which the wholly obscure species added by Jacquin is thought to belong ; the P. spicata of Swartz is probably Gonzalea spicata ; Gsertner's P. carnea, on which De CandoUe founded his dubious genus Eumachia, is perhaps an Ixora ; and finally the Philippine and Mexican species proposed by Bartling, and adopted by De Candolle, are still obscure, and perhaps themselves heterogeneous. There is small likelihood that any of them are con- geners of the species here characterized. 12. Rondeletiece. Lerchea caltcina ( Gray, I. c.) : foliis oblongo-lanceolatis acumi- natis basi attenuatis, junioribus (prassertim costis venisque subtus cum stipulis integerrimis ovato-lanceolatis caudato-acuminatis ramulis flori- busque) ferrugineo-sericeis ; cymis condensatis ; lobis calycis lineari- spathulatis foliaceis tubo coroUie pai-um brevioribus. — Ovolau, Feejee Islands, in fruit only ; Viti-levu, Mr. Milne (in herb. Hook,), with blossoms. This is evidently a near relative of Keinwardt's XatithopLytmn fndi- culosum. Indeed, should Blume's character, stipulce geminata, magnoR, hifidce, be incorrect, nothing of consequence would remain in the de- scription to distinguish that plant from the present. But Mr. Bennett's remark (in PI. Jav. Ear., p. 101) implies that the festivation of the corolla in the original Xantliophytum is imbricative (or rather convo- lutive), as in Wendkmdia. In the present plant it is certainly valvular. So that, whether X. fniticulosiim is to fall into Lerchea or not, our present plant must do so, although the enlarged and foliaceous calyx- lobes seem to be peculiar. The stigma is that of Xanthophytum. The cocci are at length ventrally dehiscent and similar to those of the sub- genus Diplophragma of Hedyotis; from which the large epigynous disk and the interpetiolar stipules mainly separate it. The species of Ophiorhiza are by no means well characterized. Of the three here proposed, the first is the most peculiar ; the second and the third are perhaps confluent. Ophiorhiza peploides {Gray, I. c.) : herbacea, puraila, diffuse ramosa ; ramis puberulis foliosis ; foliis parvis saepe 3 - 5-natis vel 312 PROCEEDINGS OF THE AMERICAN ACADEMY pseudo-verticillatis si^atbulatis seu ovato-spathulatis basi longe attenu- atis glabris ; floribus subsolitariis glabris ; filamentis filiformibus sty- loque exsertis. — Feejee Islands ; also collected by Mr. Miliie, and a smaller-leaved form by Prof. Harvey. The leaves resemble those of PepUs Portula. Ophiorhiza leptantha (sp. nov.) : fruticosa, fere glabra ; foliis Ifetevirentibus oblongo- seu elongato-lanceolatis utrinque acuminatis longe petiolatis ; stipulis utrinque binis setaceis ; cyma multiflora pu- berula ; floribus plerisque secundis subsessilibus ; corolla alba gracili pollicari, ore tenuissime barbato ; staminibus inclusis ; filamentis an- thera fequilongis ; stylo glabro. — Feejee Islands : also collected by Prof. Harvey. Ophiorhiza laxa (sp. nov.) : fruticosa ; ramis junioribus saape ferrugineo-puberulis ; foliis oblongis vel subovatis acuminatis longe petiolatis ; cymis pauci - plurifloris laxis ; floribus pedicellatis ; corolla semipollicari ; cajt. fere praecedentis, sed ramosior laxior. — Feejee Islands : also gathered by Mr. Milne. 13. Hedyotece. Oldenlandia, Houstonia, Hedyotis, etc. It is unnecessary to recapit- ulate the history of the ancient genera Oldenlandia (1703), Houstonia (1737), and Hedyotis (1747), previous to the consummation of their union by Wight and Arnott into one polymorphous, or, as they justly term it, compound genus, for which, following Lamarck, the latest of the three names was adopted. Korthals has since proposed the estab- lishment, or re-establishment, of all Wight and Arnott's principal sec- tions as distinct genera. Bentham, taking an intermediate view, and depending mainly upon dehiscence, adopts two of the Linnasan genera, viz. Hedyotis (to which he refers Dimetia as well as 3facrandia and Diplophragma) and Oldenlandia (to include Houstonia, Anotis, &c.), and also admits Scleromitrion and Kohautia. I had adopted Ben- tham's view, without particular investigation. But I now come to the conclusion, that all three Litmaean genera equally merit restoration, or at least that Houstonia is more definitely distinguishable from Olden- landia than it is from Hedyotis, as the latter is received by Bentham. For the Dimetice and 3fac7-andri(B generally, and many of the Diplo- phragmcB, not only accord with Anotis in habit, in flowers, and in the structure of the seed, but also in the dehiscence, which is loculicidal OF ARTS AND SCIENCES. 313 across the vertex of the capsule in the first instance ; and although at length the fruit may readily split septicidally, even into two cocci, so it does in various Houstonice or Anotides, as is well seen in H. (A.) an- gustifolia, of the United States. Hedyotis, Linn,, proper, is well marked by its small, globular, hard and nut-like fruit, either indehiscent or tardily septicidal into closed cocci : and the seeds are peltate but not concave on th§ face ; the corolla is short ; the inflorescence axillary and glomerate ; the stipules are mostly setose ; and the leaves lineate-nervose. Scleromitrion, equally Spermacoceous in aspect, differs from Hedyotis in having the fruit loculicidal across the summit, and the seeds of Oldenlandia. Oldenlandia has a thin loculicidal capsule, with the very numerous and small seeds angular or globular, mostly obpyramidal or trihedral, not obcompressed nor hollowed on the face. Karamyscheivia of Fischer and Meyer, from the Caucasian region, is an Oldenlandia, near 0. umhellata, with two or more accessory calyx-teeth. Kohautia, "■ too well marked in habit and character to be merged into Hedyotis" has the capsule and seeds of Oldenlandia, from which, irrespective of habit, it is distinguished only by the form of the corolla. Houstonia, besides the (mostly) elongated corolla, is distinguished from Oldenlandia by the peltate seeds, hollowed or concave on their inner face. These are few or moderately numerous, — never very numerous, as in Oldenlandia. In Euhoustonia the seeds are deeply crateriform or thimble-shaped, and the globular-didymous pod is partly superior.* * EUHOUSTONIE^ Americje Borealis. 1 . Capsula matura vix aut fere semisupera. * CoroUse tubus calycem (stepius longe) superans. M- Semina globuloso-acetabuliformia, pi. m. scrobiculata, carea hilari profunda sine crista mediana, ore rotundo. ++ Pedunculi plerique axillares, fructiferi nutantes. H. KOTUNDiFOLiA, Mickx. Seminum testa profundius scrobiculata. ■M- ++ Pedunculi erecti filiformes. Semina subtiliter scrobiculata. H. SEEPTLLIFOLIA, Michx. H. c^EULEA, Linn. VOL. IV. 40 314 PROCEEDINGS OF THE AMERICAN ACADEMY The Indian H. Rheedii (Bedyotis Rheedii, "Wight & Ai'n.) should probably be referred to Eiihoustonia, notwithstanding the reduction of the ovules and seeds to a single pair. These closely resemble those of the typical H. ccerulea. But Hedyotis Wightiana, Wall., associated with the former by Wight and Arnott, is truly a Hedyotis ; the hard nucumentaceous fruit (in good Hookerian specipiens) not being loculi- cidal at the summit, but splitting readily through the narrow partition into two closed, or at length ventrally dehiscent cocci, and the seeds are not meniscoidal, but flat-lenticular, as in genuine Hedyotis. Although I have not seen the seeds, I have little hesitation in pro- posing to constitute a peculiar subgenus, Macrohoiistonia, for two shrub- by, large-flowered, Mexican species which Kunth referred to Bouvardia. This affinity in the case of one of them, H. trijlora, has been noticed by Bentham ; for his Anotis longi flora, PI. Hartw. no. 206, is apparent- ly Bouvardia triflora, H. B. K., the figure of which De Candolle has omitted to quote. The other, H longiflora, is ^ginetia longiflora, Cav., Bouvardia longiflora, H. B. K. Coulter's specimens (no. 215, from Real del Monte) want the fruit. But the seeds, as figured and de- scribed by Cavanilles, appear to resemble those of H. rubra, but with the thin margin more decidedly winged. Whether or not these plants ■t- -t- Semina depresso-acetabuliformia, Isevia, intra caveam hilo lincari elevato notata, ore ovali : csii. pr£ecedentium. H. PATENS, Ell. Hedyotis cterulea /3. minor et H. minima, Torr. ^ Gray, Ft. 2, p. 38, pro parte. * * CorolliE tubus lobos calycis amplos hand superans : pedunculi prcecociores elongati, fructiferi patentes : semina fere H, cxeru'ece sed majora. H. MINIMA, Beck. Hedyotis minima, Torr. ^ Gray, 1. c. pro parte, excl. char. Planta vernalis ; caulibus demum ramosis 3 - 4-pollicaribus patentissimis ; foliis scabris, imis ovatis vel spathulatis, superioribus oblongis sublinearibusve ; corollae lobis tubo aequilongis. Calycis lobi scsquilineales. 2. Capsula apice tantum libera : semina fere sect. 3 : corolla parva : pedunculi fruc- tiferi laterales patentissimi. H. SUBVISCOSA. Oldenlandia subviscosa, C. Wright, in Gray, PL Wright. 2. p. 68, adn. Texas, Wright, Berlandier, coll. no. 991, 2421. 3. Capsula; matures | - 1 superae, e pedunculis brevissimis latcralibus recurvis pen- dul£e : semina leevissima, patenti-crateriformia, lateribus tenuibus quasi alatls, intus hilo lineari elevato notata. H. HUMiFUSA. Hedyotis (Houstonia) humifusa. Gray, PL Lindl. 2. p. 216, & PL Wright. 1. p. 82. — Corolla brcviuscula. H. RUBRA, Cav. Corollte tubo elongato-filiformia. OF ARTS AND SCIENCES. 315 be admitted into Houstonia, they will hardly be left as congeners of Bouvardia triphylla or Jacquini. Anotis, DC. will constitute the largest snhge.n\i?, o? Houstonia, includ- ing all of De Candolle's first and second sections, and of Arnott's third division of his subgenus of this name, except perhaps Hedyotis mono- sperma ; and also two of De Candolle's three species of his genus Rachi- callis. For his R. nitida and R. Caracasana are inseparable from his Anotis setosa, Sec. The accessory calyx-teeth or interposed seta3 are not constant nor of any consequence, (several Houstonice and Hedyotidece vary in this way,) and the a3stivation of the corolla is valvular, as in all true HedyotciB* Not so, however, in R. rupestris, of the West Indies, the obvious type of Rachicallis : in this the lobes of the corolla are strongly imbricated, as in Rondeletia. The seeds of Anotis are meniscoidal, cymbiform, or at least concave on the inner face, and marked with a longitudinal hilar ridge : in some species they are undistinguishable from those of true Houstonia. If in others their margins are not in- flexed so as to be distinctly concave on the inner face, they are never like those of Oldenlandia. The nicer question remains as to what is to be done with sundry groups of Indian, Chinese, and Insular species, which stand between Anotis and true Hedyotis. I have examined a considerable number of them, but must refer the question to some botanist who can command fuller materials. As far as my examination extends, their seeds are all much alike, and are essentially those of Hedyotis, being compressed- lenticular and peltate, with a small, more or less protuberant hilum, not at all hollowed on the inner face, but with acute edges. The speci- mens I possess are reducible to two principal groups of species. First, those in which the summit of the capsule is more or less exserted beyond the calyx, and primarily loculicidal in dehiscence. In the re- markable Hedyotis leptopetala, Gray,t the pod and its dehiscence ac- cord very well with those of American Anotides. In H. scandens, one * Wight and Arnott characterized their Hedyotis as having the lobes of the co- rolla " imbricated (not twisted) in jestivation." This obvious eiTor has been copied all along by Endlicher, by Torrey and Gray, and recently by Miquel. t Botany of Japan, in Mem. Amer. Acad. 6, p. 394. The patent fact has since ari'ested my attention, that this is the Leptopetalum Mexicanum of Hooker and Arnott, in the Botany of Beechey's Voyage, where there is a good figure ; so that this be- longed to that unfortunate parcel of specimens collected at the Loo Choo and Bonin Islands, but supposed to have come from Mexico. 316 PROCEEDINGS OF THE AMERICAN ACADEMY of the types of Dimetia, and in H. recurva, Benth. (allied to H. ma- crostema, Hook. & Arn., the type of the section 3Iacrandria, which I have not seen), the free summit is very soon septicidal also. These species, which may be taken to represent Wight and Arnott's Dimetia and Macrandria, accord far better in aspect and character with Hous- tonia (section Anotis) than with true Hedyotis, and would perhaps form a subgenus of the former, if not to be distinguished from both. On the other hand, all Wight and Arnott's species of their subgenus Diploph'agma, having wholly inferior and purely septicidal-dicoccous fruit, adhere more naturally to Hedyotis. Their third division of this group appears strictly referable to that genus. Their remaining species may compose a subgenus of the same ; but the dehiscence and the calyx, produced beyond the ovary into a merely 4-toothed or 4-cleft cup or limb, decidedly separate them from Houstonia. In the latter, the calyx is adnate up to the origin of the lobes. So it is in Kadua, Cham. & Schlecht., a genus of more or less shrubby plants, natives of the Sandwich Islands, which was also reduced to the com- pound genus Hedyotis by Endlicher. Through the smaller and sub- herbaceous species, it does indeed nearly approach Kohautia. From this and from all the other related genera, Kadiia may be technically distinguished by the somewhat salient or reduplicate edges of the lobes of the corolla in aestivation, and by the inflexion of their tips in all but two of the species, which again are well characterized by their winged seeds. The seeds, moreover, are compressed in Kadua, (not depressed or obcompressed,) packed side by side, and attached by one edge, not by one face. The capsule, also, is hard and firm, and tardily dehis- cent, except by the transverse chink at its naked summit, in some species perhaps slightly drupaceous before maturity; which led the founders of the genus wrongly to refer hither two baccate species, then imperfectly known, — as has already been mentioned. Meyen's genus Weigmannia is only Kadua cordata ; and what is de- scribed and figured in the Reliquice Meyenianse as a single large seed in each cell evidently consists of a mass of seeds closely packed upon the placenta. The two wing-seeded species would fall into the subtribe Cinchonece, according to the prevalent arrangement, which also too widely sepa- rates Bouvardia from Houstonia, &c. ; but there are other cases known in the family of winged and wingless seeds occurring in the same OF ARTS AND SCIENCES. 317 genus. Rhomhospora of Korthals seems to be another Hedyotideous plant, referred to the Cinchonece upon this sole technical character. Indeed, even the whole distinction between baccate, drupaceous, and capsular fruits in the polyspermous Ruhiacece. is in many cases so indecisive, that in their classification it may answer better to proceed still farther m the direction already indicated by Mr. Bentham, and to take the primary characters from asstivation, placentation, and stipulation, rather than from the texture of the fruit and the surface of the seeds. The following conspectus of the species of Kadua exhibits the diver- sities which this genus presents : — KADUA, Cham. 4- Schlecht. § 1, Flores in cymam terminalem thyrsumve congesti: folia coriacea. * Semina alata ! Plantas centranthoidese, thyrsiflora^, subglaucaj, basi tantum frutescentes ; foliis subsessilibus rigidis lineato-costatis ; lobis calycis breviusculis ; corolla3 lobis asstivatione hand inflexis : capsula apice baud producto fere plana. 1. K. CENTRANTHOiDES, HooJc. S^ Am. Glaberrima : folia ovato- lanceolata seu cordata-ovata : stylus etiam glaber ! 2. K. GLOMERATA, HooJc. 8; Am. Inflorescentia floresque pubes- centes : folia caulina oblongo-lanceolata. * * Semina complanata, scobiformia, nunc marginata vel subalata. 3. K. CORDATA, Cham. S)- Schlecht. Weigmannia glauca, Meyen. Habitus inter prsecedentes et sequentes : folia superiora et floralia sub- cordata, ea cymulas glomeratas involucrantia : lobi calycis ovato-lan- ceolati ovario bis longiori, capsulam fere hemisphtericam vertice plani usculam excedentes. * * * Semina immarginata, compresso-angulata : corollse lobi in ala- . bastro apice inflexi. H— Caules suffrutescentes, 1 — 2-pedales ; calyces majusculi. Kohautice aflfines. 4. K. CoOKiANA, Cham. 8f Schlecht. Gracilis, juncoidea, pauciflora ; foliis anguste lanceolatis linearibusve rigidis nervuloso-reticulatis ; calycis lobis subulato-lanceolatis ovarium longe superantibus ; capsuliB vertice libero conico. 5. K. PARVULA, Gray, I. c. Glaberrima ; ramis gracilibus usque ad apicem foliosis ; foliis coriaceis utrinque lucidulis conformibus (un- 318 PROCEEDINGS OF THE AMERICAN ACADEMY ciara longis) ovato-lanceolatis acutis, inferioribus petiolatis summis ses- silibus, venis primariis inconspicuis ; floribus paucis (5 - 7) in cymula terminali ; calycis lobis lato-lanceolatis tubo corolliB dimidio brevioribus capsula turbinata vertice subplana ajquilongis. G. K. GLAUCIFOLIA, Gray, I. c. Glaberrima ; ramis usque ad cymam sessilem multifloram foliosis ; foliis subcoriaceis ovato-lanceolatis imisve lanceolatis acute acuminatis breviter petiolatis (summis sessilibus) subtus glaucis penninervis ; calycis lobis subulatis tubo corollce gracilis multo- ties brevioribus capsula fere hemisphaerica vertice convexiuscula paullo brevioribus. -i— -1— Frutex sat altus : calycis lobi ovario breviores e capsula vertice libero convexo vel conico demum decidui. 7. K. Menziesiana, Cham. 8; Scldecht. Hedyotis coriacea, Smith. H. conostyla, Gaudich. Kadua Smithii, Hook. Sf Am. § 2. Flores axillares, irao supra-axillares : calycis lobi magni, soli- tarii bini vel terni : pedunculi filiformes, fructiferi nutantes : corolla viridula seu alba, limbo amplo, lobis acuminatis apicibus in alabastro inflexis : ovarium tetraquetrum : semina angulata : frutices foliosi : folia laxe penninervia sajpius membranacea. 8. K. acuminata, Cham. S^ Schlecht. Glaberrima; ramis gracilibus ; foliis lanceolatis sensim acuteque acuminatis breviter petiolatis, juniori- bus subsessilibus ; calycis lobis anguste lanceolatis. 9. K. PETiOLATA, Gray, I. c. Ramosa, glabra ; foliis oblongo-lanceo- latis oblongisve subito acuteque acuminatis basi plerumque acutis longe petiolatis laxe venosis ; calycis lobis lanceolatis seu triangulari-lanceo- latis capsulam late turbinatam subaequantibus. Var. OYALIFOLIA : major ; foliis ovali-oblongis (3 - 4-pollicaribus), venis crassioribus. 10. K. GRANDis, Gray, I. c. Foliis amplis oblongis ovalibusque breviter acuminatis perspicue penninerviis longiuscule petiolatis, juni- oribus ad costam venasque stepius pubentibus ; calycis lobis foliaceis ovato-lanceolatis capsula late turbinata acute 4-costata jequilongis ; coroUaj lobis tubum ada^quantibus. Species exclusce : — K. Homanzoffiensis, Cham. & Schlecht. = Gouldia Romanzoffiensis. K. affinis, Cham. & Schlecht. := Goiddia Sandwicensis. Professor Gray also presented the following communica- tion : — OF ARTS AND SCIENCES. 319 Notes vpon some Polynesian Plants of the Order Loganiacecs. By Asa Gray, M. D. These will naturally enoiigli follow the foregoing notes upon Ru- hiacece. 1. Geniostomece (Geniostoma and Labor ded). Under the name of Hcemospermum, Reinwardt, Blume long ago cor- rectly described the pulpy placentae of Geniostoma, which enclose the seeds tind fill the cells of the fruit. It is remarkable that this should have escaped the notice of succeeding authors, even of Alphonse De Candolle, when he reduced Hcemospermum to a species of Genio- stoma upon the authority of an authentic specimeij ; and of Bentham, when he recently revised the Loganiacece* and had Blume's detailed character of Geniostoma before him ; t especially as in dried speci- mens the seeds all cohere in a mass, and are covered with a pellicle of dried pulp, which, when soaked, promptly swells up and encloses the seeds, just as they doubtless are enclosed in the fresh fruit. It appears from a supplementary note to Mr. Bentham's paper, that this struc- ture has been noticed by M. Bureau, in his inaugural dissertation upon this group of plants (which I have not seen) ; but I do not well under- stand what is meant by " the curious expansions of the placenta " in a " regular stellately-Iobed form." I am confident that there are no distinct arilli severally enclosing the seeds, in the manner of Podo- phyllum, but an equable pulpy development of the placenta. In this lifht it is questionable if Bentham's G.fagrceoides (the flowers of which are unknown) is really a Geniostoma. Although the pericarp is cap- sular, the analogy of Geniostoma to Gardenia and the Randiece in the placentation is not to be overlooked, especially as the a3stivation of the corolla is similar. To this there are exceptions, however. Good as characters of osstivation are in Ruhiacece, and as they are likely to be in these " Ruhiacece with a free ovary," we can never trust implicitly to the difference between the imbricative and the contorted or convolute. No one can be more aware of this than Mr. Bentham, who will not be surprised to learn that this distinction between the second and third sections of his tribe Eidoganiece is untenable, — Geniostoma rupestre having occasionally the {Estivation assigned to Logania, namely, with * In Journal of the Proceedings of the LinnsEan Society, Vol. I. 1857. t In Mus. Bot. Lugd.-Bat., Vol. 1, p. 238, 1850. 320 PROCEEDINGS OF THE AMERICAN ACADEMY one lobe wholly exterior in the bud, while an unpublished Tahitian species exhibits, in the few flower-buds we have for examination, a regular quincuncial imbrication. That third section may, however, be confirmed by admitting the nature of the placentae to a leading place in the character. The ovules of Geniostoma are amphltropous, as suggested by End- licher, rather than anati'opous, as stated by Blume ; but the seeds become almost anatropous. The minute embryo assigned by Blume, and figured in his G. iasiostemon, is not borne out by G. ligustrifoliiim and G. ruprestre, both of which have the cylindrical embryo nearly as long as the albumen, as .remarked by Alphonse De Caudolle in the Mauritian G. ovation.^ The corolla, as remarked by Bentham, is not at all funnel-form, but almost rotate, — in fact, between rotate and campnnulate. The phrase " corolla mhinfundibidiformis " found its way into the generic char- acter from Forster's figure of the flower of G. rupestre, which repre- sents the tube of the corolla much too long. It is really so short that Sprengel, describing an original specimen, calls the corolla " suhrosacea pentapetaloidea" The fine pubescence on the lobes is variable in the same species, or even wanting. The villosity of the throat also vai'ies in amount in different forms of G. rupestre, in some cases being re- duced to a small tuft at the insertion of the short filaments, or merely upon them ; in one of our species it is wholly wanting. The stigma, I believe, is capitate throughout the genus, or at first depressed-globose, after anthesis sometimes becoming obovate. Here, again, Forster's " stigma cylindricum, " — utterly at variance with his figure, and that, in turn, doubtless incorrect as to the strong lobulation — has given rise, on the one hand, to De CandoUe's " stigma crassius- culum" on the other, to Endlicher's " stigma sidcatuyn." Sprengel's " stigma capitatum, pid)escens, sid)lamellosum" is better, and would be better still without the last word. "While occupied Avith the pistil of G. rupestre, I may remark that the difference between Forster's char- acter '^^ stylus jiliformis tuho longior" and his figure (d), which exhib- its a very short style (such as Sprengel terms "brevissimus"), is in fact exemplified in what I regard as different forms of this species ; — the style being often twice or thrice the length of the ovary and the stigma, and sometimes reduced in length even to a minimum. As to Sprengel's " stylus hasi villosus" that was probably suggested by Fors- OF ARTS AND SCIENCES. 321 ter's figure ; but that was intended to represent the whole pistil, and the villous hairs ai-e placed, not upon the base of the style, but around the ovary, — indeed, they belong to the corolla. The inflorescence is axillary throughout the genus. This is stated by Blume only ; but De CandoUe specifies the axillary flowers under almost every species. The species of our Polynesian collections are evidently three, viz. : — Geniostoma ligustrifolium, a. Cunn., of New Zealand, known by its didymous or bicapitate stigma, and its triangular pointed stipules. Geniostoma rupestre, Forst. ; a polymorphous species, to which I should refer, not only Blume's G. Hcemospennum, but probably Ben- tham's G. crassifolium, at least the variety glaherrimum, and even a plant which has the calyx assigned to G. Ciimingianum, Benth. Our forms of the species — besides the typical one, which is smooth, and with rather small and pointed leaves, like those of the New Zea- land species — may be arranged under the varieties ellipticum, macro- phyllum, and puherulum. The species may be known from the last by the transversely truncate stipules, and the entire stigma, raised on more or less of a style, never absolutely sessile ; nor is the corolla wholly glabrous within, as in Geniostoma astylum {Gray, I. c.) : glaherrimum ; stipulis truncato- bifidis ; foliis ovalibus ; sepalis ovatis ; corolla intus glabro testivatione quincunciali ! ; stigmate integro subgloboso sessili ; fructu immature anguste oblongo. — Tahiti, Society Islands. The specimen in the Hookerian herbarium from the Sandwich Islands referred by Bentham to his G. crassifolium, ^3. glaherrimum, if really from those islands, is likely to belong to a species which on the whole is better placed in the genus Lahordea. Judging from the plate in the Botany of Freycinet's Voyage, Bentham presumed the estivation of the corolla of this im- perfectly known genus to be valvular, and the fruit to be baccate. The first point would seem to have been verified by M. Bureau, who, according to Mr. Bentham's supplementary note, " has been enabled to dissect three flowers of this plant \_Lahordea fagrceoidea, Gaudich.]. He confirms the presumed valvular aestivation of the corolla, but al- ways finds two cells only to the ovary, and very plausibly suggests that the three-celled one examined by Gaudichaud was accidentally vol. IV. 41 322 PROCEEDINGS OP THE AMERICAN ACADEMY abnormal." Now, the herbarium of the South Pacific Exploring Ex- joedition contains good flowering specimens of what I cannot doubt is Gaudichaud's L. fagrceoidea (notwithstanding two discrepancies in the details which are probably due to mistakes of the artist), and fruiting specimens of another and nearly related species, which negative both these presumptions, while they reveal the true affinity of the genus. That is to say, in our flowering plant the lobes of the corolla in aesti- vation decidedly, though narrowly, overlap in the convolute manner, and are slightly twisted towards the observer's left. Probably the flower-buds examined by Bureau were too young to show the nestiva- tion properly. Also our fruiting plant is tricarpellary, in all the speci- mens we possess, and, which is of more consequence, the fruit is a capsule, just like that of Geniostoma, except in being trimerous, — the placentos equally pulpy, and the seeds nidulant. Lahordea, therefore, ranks next to Geniostoma, from which, so far as these materials show, it would seem to be very well distinguished by its Gtertneroid habit, the long and foliaceous divisions of the calyx, the tubular (instead of rotate-campanulate) corolla, the elongated club-shaped (instead of glo- bose or didymous) stigma, and the terminal inflorescence. The occa- sional, if not the usual, tricarpellary ovary is at most a subsidiary dis- tinction. It is not constant in L. fagrceoidea, and it can hardly be expected to be so in the allied species. But the same collection (and also Remy's, of later date) has supplied complete materials of a third species, which almost exactly fills the interval between these two genera. For, with the general habit and foliage, and the dicarpellary ovary of Geniostoma, it combines the hypocrateriform corolla, the clavate stigma, and the terminal inflorescence of Lahordea. The form of the corolla, taken with that of the stigma, will surely outweigh that of the calyx, and the terminal inflorescence affords a better distinction than the oc- casionally trimerous gynnscium. So we must annex this ambiguous species to Lahordea, unless we merge the latter genus in Geniostoma, which at present would hardly be warranted. The known species are : — Labordea (Geniostomoides) tinifolia {Gray, I. c.) : glaber- rima ; ramis gracilibos ; foliis oblongis chartaceis longiuscule petiolatis ; cyma pedunculata composita laxiflora ; calycis segmentis triangulari- ovatis acutissimis tubo coroUoe hypocraterimorpha? triple brevioribus ; stylo gracili ; stigmate elongato-clavato ; capsula globosa bivalvi. — OF ARTS AND SCIENCES. 323 Sandwich Islands, in Kauai, Maui, Oahu, and Hawaii (coll. Expl. Exped., and coll. Remy). Labordea fagr^oidea (Gaudich.) : glabra, pallida ; foliis obo- vato-oblongis oblongisve basi in petiolum breviusculum attenuatis pen- ninerviis subcoriaceis ; cyma sessili quasi umbellato-contracta ; calyce amplo fere 5-secto, sepalis lanceolatis foliaceis nervosis corollas tubum subajquantibus ; stigmate elongato subclavato ; ovario 2 - 3-loculari. — Our specimens are from Hawaii. On the same island was gathered an imperfect fruit-bearing specimen, possibly of this very species, but the vestiges of the calyx are much smaller, and the leaves are larger and somewhat pubescent. Of the fruit, I can only say that it is narrower than in the next, and bivalvular. Perhaps it is a distinct species, but the materials are insufficient. Labordea sessilis {Gray, I. c.) : foliis subsessilibus crasso-coriaceis lineato-venosis oblongis seu lanceolato-oblongis, junioribus subtus ramis- que pube brevi fusca hirsutis ; sepalis oblongo-lanceolatis ; capsulis brevissime pedunculatis trivalvibus. — Oahu ; in fruit only. 2. Fagrcea. The two Polynesian species of this genus in the collection are interesting as offering additional points of similarity with Lisian- thus and related GentianacecB. They are, F. Berteriana, Gray, which, with the corolla of F. Zeylanica, though smaller, (yet sometimes with the tube three inches long,) has the bilamellar stigma of Lisianthus ! This is not mentioned in the character published in Bentham's revision of the genus. The other species, which is mentioned by Bentham, but not characterized, has the placentae so strictly parietal and sessile, that they appear like four placentae approximate in two pairs, after the manner of some Gentianece and OrohanchecB. It has no distinct stipules. It is as impossible, therefore, to draw a marked line of distinction be- tween Loganiaceoi and Gentianacece on the one hand, as between them and Ruhiacece on the other. So true is it, that Loganiacece are not so much an order per se, as a nexus, binding together four otherwise very distinct orders. — The new Feejean species may be thus character- ized : — Fagr^a gracilipes {Gray, I. c.) : foliis lato-ovatis subcoriaceis obtusis vel apiculato-acutis basi in petiolum longum abrupte decurrenti- bus ; cyma terminali sessili multiflora foliis multo breviore ; calyce parvo ; corolla e tubo angusto superne late obconico-ampliata ; sta- minibus subexsertis ; stigmate capitellato ; ovario prorsus uniloculari, placentis arete parietalibus. — Feejee Islands. 324 PROCEEDINGS OP THE AMERICAN ACADEMY 3. Finally, there is a new Polynesian genus, doubtless Loganiaceous, although the coi-olla and consequently the stamens are unknown. It is remarkable for having an indehiscent, nucumentaceous, or possibly sub- drupaceous, club-shaped fruit, on which account it does not fall into either of Bentham's four tribes. It is dedicated to Joseph P. Cou- thouy, Esq., the zealous Conchologist of the Expedition of which the plant is one of the fruits. COUTHOVIA, Nov. Gen. Calyx 5-partitus ; segmentis rotundatis crassis imbricatis intus basi biglandulosis ? Corolla et stamina ignota. Ovarium liberum, ova- tum, calyce subinclusum, stigmate sessili apiculatum, biloculare. Ovula in placentis crassis, medio dissepimento adnatis, plurima, amphitropa. Fructus lignosus, maturus forte subdrupaceus, clavatus vel fusiformis, basi stipitiformi calyce parvo persistente stipata, bilocularis, indehis- cens. Semina baud visa. — Frutex vel arbor Vitiensis, Fagrcea facie, stipulis vaginatis Labordece ; cyma terminali ; floribus parvis. CouTHOViA CORTNOCARPA (^Gray, I. c). — Ovolau and Sandal-wood Bay, Feejee Islands. Four Iiaudred and seventieth meeting. October 11, 1859. — Monthly Meeting. The President in the chair. The Corresponding Secretary read several letters relative to the exchanges of the Academy. Professor Felton presented, from the Hon. George P. Marsh, a circular letter in behalf of the new dictionary of the English Language undertaken by the Philological So- ciety of London. Professor Felton also exhibited a series of recent photo- graphs from Athens, representing different views of the Par- thenon, and some sculptures discovered upon the Acropolis in the course of excavations made during the present year. Professor Lovering presented a memoir upon the Secular Periodicity of the Aurora Borealis ; in which he referred to the manuscript records of the Academy as follows : — OF ARTS AND SCIENCES. 325 It is well known that Dr. Holyoke, of Salem, kept a Meteorological Journal from 1754 to 1828. That part which relates to the weather has already been published in the Memoirs of the Academy. I have consulted the manuscript records of Dr. Holyoke, which he presented to the Academy, and have selected from them all the instances he has recorded of auroras observed by him. Unfortunately, the copy which the Academy possesses is not the original, until the year 1786; and, being prepared for a special purpose, does not contain any record of auroral appearances until that year. But the Academy possesses the original manuscript Journal of Meteorology kept at Cambridge by Professor John Winthrop, from 1742 to 1779 ; and also that of Pro- fessor Edward Wigglesworth, also kept at Cambridge, from 1782 to 1793 ; and that of Dr. Enoch Hale, kept in Boston, from 1818 to 1848. In all these Journals, except the last, the auroras are noted with great care ; and they altogether cover more than a century, in which only two years are wanting, namely, 1780 and 1781. From this storehouse I have been able to collect 501 recorded examples of auroras, of which only 92 are duplicates ; these being subtracted, there remain 409 independent auroras, of which 400 have never before ap- peared in print. Professor Winthrop has recorded 116 exhibitions of the aurora. Professor "Wigglesworth 123, and Dr. Holyoke 262. As these observations have been made at two places only a dozen miles apart, they are strictly comparable with each other, and furnish an almost uninterrupted record of the aurora for one hundred years in this immediate vicinity. The result of my discussion of these obser- vations is, that during the thirty-three years from 1793 to 1827 there are only 17 recorded examples of the aurora. For the thirty-three years preceding 1793 there are 336 ; and in several instances, a single year of the latter epoch fui-nishes more cases than the whole of the former epoch; and in one year (1789) there are more than twice as many exhibitions of the aurora as in the whole thirty-three years next preceding 1827." Dr. B. A. Gould laid before the Academy a circular from the Berlin Academy of Sciences, proposing the establishment of a foundation in memory of Humboldt, for the promotion of scientific travels, &c. Professor Peirce made a communication upon the Zodiacal Light. 326 PROCEEDINGS OF THE AMERICAN ACADEMY Professor Agassiz stated that, during his recent visit to Switzerland, interesting discoveries had been made in a rail- road cutting on the shores of Lake Neufchatel, and in the bed of the lake, at a period of unusual lowness of the water, of a quantity of Celtic utensils, along with the remains of many animals not existing in the vicinity, or even in Europe, at the present time. Among them were stone hatchets, closely resembling those of the North American Indians ; and other implements with handles made from the horns of the Euro- pean deer, now extinct in that vicinity ; also, bones of the wild boar, which now exists only in the eastern and northern parts of Switzerland ; and, in other places along the shore, remains of pottery, bronzes, &c., indicating several different social states at different periods. Professor Gray communicated the Diagnosis of the Species of Sandal-ivood ( Santalum) of the Sandwich Islands : — The species of Santalum inhabiting the Sandwich Islands are of considerable interest, inasmuch as they furnish the celebrated sandal- wood, formerly exported from those islands in considerable quantities, and not yet exhausted, though the supply is much diminished. Although gathered long ago by Menzies, Santalum Freycinetianum and S. ellipticum were first made known and imperfectly discrimi- nated by Gaudichaud. Hooker and Arnott afterwards proposed a third species, & panicidatum, which is evidently no more than a va- riety of S. Freycinetianum growing in drier or more exposed places. Indeed, it is questionable whether S. ellipticum is not likewise a mere variety of that same species, so polymorphous in foliage, of which Gaudichaud's S. Freycinetianum, as figured in the Botany of Frey- cinet's Voyage, is probably the most narrow-leaved form. For the present it may suffice to give such diagnoses as I am able to draw up, fi'om the examination of a full suite of specimens, of these two species, if such they be, and of a third and more distinct species, well marked by its larger drupe with a strongly rimose or ruminated putamen, which was discovered by the naturalists of Captain Wilkes's Expe- dition on the island of Kauai. 1. Santalum Freycinetianum (G^aifc?ic/«.) : fohis coriaceis ovali- bus obovato-oblongisve in petiolum brevem basi angustatis ; cymis OF ARTS AND SCIEXCES. 327 plerumque terminalibus paniculatis ; perigonil tubo obconico, lobis ovatis ; drupa ovoideo-globosa (baud semi-pollicari), putamine la^vius- culo. — Oahu and Hawaii. Var. LATiFOHtor : arboresccns ; foliis magis coriaceis brevius petio- latis late ovatis ovabbus vel subrotundis ; cyma densiflora. — S. pani- culatum, Hook. S^ Ai'n., Bot. Beech. Voi/. p. 94. — Craters of Hawaii and Maui. 2. Santaluii ellipticum ( Gaudich.) : foliis cbartacels ellipticis oblongis seu ovali-obovatis, petioli gracili ; cymis paniculisve sa?pius axillaribus ; perigonii tubo brevi, lobis ovatis ; fructu S. Freycinetiani. 3. Santaltjji ptrularium ( Gray in Bot. ExpL Exped. vied.) : foliis subcoriaceis oblongis supra lucidis venulosis subtus glaucis, petiole gracili ; cymis sa?pius axillaribus ; perigonii tubo cylindraceo, lobis oblongis ; drupa pyriformi (cum pedicello incrassato pollicari), puta- mine valde ruminato-rimoso. — Kauai, Sandwich Islands. Professor Gray also communicated a paper (read by title at the Annual Meeting), being, — Characters of Neiu Alg'cc, chiefly from Japan and Adjacent Regions, collected by Charles Wright in the North Pacific Exploring Expedition under Captain John Rodgers. Com- municated by Request of the Commander of the Expe- dition. By Professor William H. Harvey, of Dublin University. 1. Sargassum (Schizophtlla) PiNXATiFiDuar : caule comprcsso disticlie pinnato, pinnis e margine egredientibus ; phyllodiis linearibus profunde pinnatifidis, laciniis paucis (2 - 4) costatis argute serratis vel foliorum superiorum integris; vesiculis ellipsoideis folio sa^pe bipartite serrato coronatis ; receptaculis longissime laxeque racemosis cylindra- ceis inermibus. Loo Cboo Islands. 2. Sargasso: (HoLornrLLA) filicixum: : caule filiformi longis- simo (basi ignoto) ; ramis sa^pius secundis ; foliis longe petiolatis lineari- oblongis tenuibus profunde pinnatifidis, laciniis alternis linearibus trun- catis apice bi-tridentatis ; vesiculis spba^ricis folio pinnatifido coronatis ; receptaculis siliqua?formibus apice ramulorum solitariis. East coast of Japan. 328 PROCEEDINGS OF THE AMERICAN ACADEMY 3. Sargassum (Holophtlla) Ringgoldianum: caiile compresso pinnatitn ramoso, ramis horizontalibus complanatis ancipitibus flexuosis pinnatim compositis, pinnulis angulatis ; foliis lanceolatis integerrimis verticalibus crassis basi attenuatis immerse costatis, junioribus sub- enerviis ; vesiculis maguis oblongo-ellipsoideis ad basin ramulorum solitariis folio coronatis ; receptaculis racemosis junioribus inermibus. East coast of Japan, and at Simoda. 4. Sargassum (Holophtlla) Rodgersianum : (caule ignoto) ramis ad ortum retrofractis ? compressis flexuosis pinnatim decompo- sitis, ramulis decompositis ; foliis omnibus patentissimis angustissirae linearibus immerse costatis subenerviis integerrimis ; vesiculis longe petiolatis sphasricis longissime mucronatis vel folio filiformi 1-2- unciali coronatis ; receptaculis linearibus inermibus obtusis demum racemosis. East coast of Japan, floating at sea. 5. Sargassum (Holophtlla) siliquastrum ? (Ag.), var. ptri- FERUM : (caule ignoto) ramis ramulisque ad ortum retrofractis com- presso-i^lanis ancipitibus decompositis, superioribus in ramulis angus- tissimis desinentibus ; foliis inferioribus lanceolatis oblongisve distanter serrulatis immerse costatis, superioribus angustissime linearibus inte- gerrimis subenerviis ; vesiculis magnis ad basin ramulorum solitariis pyriformibus longe mucronatis ; receptaculis linearibus inermibus deni- que in ramulo racemosis. Simoda, Japan, on rocks at low tide. 6. Sargassum (Holophtlla) cortnecarpum : caule triquetro, ramis ad ortum retrofractis ; foliis radicalibus inferioribusque elliptico- oblongis latis subintegerrimis vel repando-dentatis crassis immerse cos- tatis, superioribus ramuliformibus angustissimis costatis paucis ; vesiculis magnis ellipsoideis mucronatis ; receptaculis clavatis plano-compressis inermibus emarginatis racemosis. Simoda, Japan. 7. Sargassum (Carpophtlla) assimile: caule tereti lasvissimo ; foliis e basi valde obliqua cuneata oblongis obtusis minute glandulosis argute dentatis nervo infra apicem evanescente costatis ; vesiculis in petiolo sursum compresso ipsis vix breviori splia3ricis muticis ; re- ceptaculis foliiferis saspius furcatis, laciniis integerrimis vel remote denticulatis. Loo Choo Islands, in tide-pools. OF ARTS AND SCIENCES. 329 8. Cystophtllum fusiforme : radice ramoso ; frondibus ex collo in caulcs plures divisis ; caulibus indivisis tereti-compressis, ramis lateralibus undique egredientibus ci-ebris brevibus ramulis subfasci- culatis onustis, ramulis lineari-fusiformibus utrinque acutis medio sajpe vesiculiferis ; vesiculis fusiformibus ; receptaculis ignotis. Var. /3. CLAviGERUM : ramis ramulo longissimo claviformi infra apicem vesiculifero subtensis, ramulis filiformibus. On rocks at low tide, Simoda. /3. Hakodadi, Japan. 9. Fucus (Fucodium) Weightii : fronde lato-lineari complanata decomposite dicbotoma ramosissima ; vesiculis ovalibus v. bilobis in ramis superioribus vel soepe in axillis ipsis immersis ; receptaculis ignotis. Straits of Sangar, Japan. 10. Fucus (Fucodium) Babingtonii : fronde angustissima com- presso-plana decomposite dichotoma fastigiata ; vesiculis oblongis an- gustissimis in ramis superioribus infra axillas immersis ; receptaculis linearibus terminalibus simplicibus furcatisve. Japan (Dr. Babington in Herb. T. C. D.) : rocks at Simoda ; Hong Kong. 11. EcKLONiA Wrightii: stipite brevi robusto compresso apice subpalmatim ramoso (vel crebre dichotomo ?) ; ramis in frondes pin- nati-lobatas expansis, laciniis sublanceolatis basi angustatis injequaliter argute serratis. Simoda, Japan, on rocks at low tide. 12. Alaria pinnatifida : stipiti ancipite sursum complanato cris- pato-raarginato in costam latam apice desinente ; lamina latissima pro- funde pinnatifido-lobata, laciniis oblongis simplicibus furcatisve sinubus rotundatis, pinnis crassis obovatis brevibus. Simoda, Japan. 13. CoSTARiA TuRNERi (Grev.) ; var. pertusa : stipiti ex radice ramosa piano in laminam longissimam (11 - 12-pedalem) lanceolatam 4-costatam bulloso-inflatam demum foraminibus pertusam expanso. Straits of Sangar and Hakodadi Bay, Japan. 14. DiCTYOTA obtusangula: fronde anguste linear! incrassata succulenta opaca decomposite dichotoma ; axillis omnibus latissime rotundatis ; laciniis patentibus divaricatisve, supremis irregularibus, apicibus obtusis nunc multifidis. Loo Choo and Ousima. (Also common at the Friendly Islands.) VOL. IV. 42 330 PROCEEDINGS OF THE AMERICAN ACADEMY ' 15. Odonthalia obtusangula : froncle plano-compressa in parte superiori immerse costata lineari alterne decomposita, ramis distantibus patentibus plus minus compositis juuioribus s^epe margine denticulatis, ramulis alternis furcatis corymbosis erectis, laciniis ultimis anguste subulatis ; axillis omnibus rotundatis apicibusque acutis. Straits of Sangar, Japan ; floating. 16. Rytiphlcea complanata (Ag.) ; var. pusilla : fronde nana complanata anguste lineari flabelliformi subfastigiata pinnatim decom- posita, pinnis erecto-patentibus crebris pi. m. pinnatis, pinnulis subu- latis alternis. — An. sp. distincta ? Hakodadi, Japan. 17. Chondria crassicaulis : ironde crassissima succulenta vage ramosa, ramis sparsis vel subverticillatis incrassatis flexuosis basi con- strictis, ramulis sparsis fasciculatisve claviformibus obtusissimis basi valde constrictis ; cystocarpiis ? — LaurencicB, sp. ? Harv. in Alg. Mor- row, Japan Exped. Japan : Simoda, Dr. Morrow ; Hakodadi. 18. PoLTSiPHONiA Stimpsoni: fronde capillai-i rigidiuscula vage ramosa ; caule ramisque primarils corticatis arcuatis, ramis secundariis horizontaliter patentibus divaricatisque subsecundis brevibus parum ramulosis articulatis, ramulis subulatis patentibus, articulis diametro aequalibus vel brevioribus 4-siplioniis, geniculis opacis ; ceramidiis ? Japan ; dredged in Hakodadi Bay by 3Ir. Stimpson, the zoologist of the Expedition. 19. PoLTSiPHONiA calacantha: fronde fuceseente capillari 4- siphonia ecorticata vage ramosa, ramis sparsis flexuosis linearibus sira- pliciusculisque per totam longitudinem ramulis brevissimis quadrifariis horizontalibus divaricato-multifidis spinulosis confertissime onustis, ar- ticulis brevissimis ; spinulis ramulorum apice fibrillifei'is. (Polysiph. no. 13, Harv. Alg. Ceylon.) Loo Choo Islands, and Tanegasima, Japan, south of Kiu-siu. 20. POLTSIPHONIA FLABELLULATA : pusilla, nigrcscens ; fronde capillari flaccida brevi repetite dichotoma fastigiata, axillis acutis, apici- bus vix attenuatis, articulis 6-siphoniis omnibus diametro brevioribus. Tanegasima, Japan. 21. POLTSIPHONIA Harlandii : fronde 4-siphonia cortlcata tcssel- lata setacea parum ramosa fuceseente, ramis virgatis simplicibus attenu- OF ARTS AND SCIENCES. 331 atis, ramulis quoquoversum egredientibus brevibus basi simpliclbus nudis apice pluries furcatis fastigiatis, apicibus acutis, articulis ramulo- rum pellucidis diametro subbrevioribus ; tetrasporis sub apice ramulo- rum solitariis. Hong Kong. 22. Wrangelia ? Tanegana : fronde corticata ; ramis quoquover- sum egredientibus ramellis densissime vestitis, ramellis brevissimis ver- ticillatis crassis bis terve furcatis mucronatis, articulis ramellorum diametro gequalibus ad geuicula valde constrictis. Tan egasima, Japan. — Fruit unknown : perhaps a Callithamnion or Halurus. 23. Desmia Japonica: fronde latiuscula compresso-plana subfla- belliformi decomposito-pinnata, pinnis irregulai'ibus lato-linearibus, pin- nulis ina3qualibus subulatis, axillis omnibus rotundatis. Simoda, Japan ; on rocks at low tide. 24. Gracilaeia gigas : fronde cartilagineo-carnosa crassissima tereti siccitate collapsa elongata vage ramosa, ramis alternis secundisve longissimis simpliciusculis nudis vel ramulis paucis filiformibus obsessis, axillis rotundatis, apicibus attenuatis. Simoda, Japan ; on rocks at low tide. 25. Gracilaria eucheumioides : fronde primaria decumbente crassissima compressa vage et parce ramosa, ramis clava^formibus sim- pliclbus vel apice furcatis compressis nudis vel hie illic tuberculis onustis tunc erectiuscula pi. m. pinnatim ramosa, apicibus obtusis. (Harv. Alg. Ins. Amic. no. 35.) Ousima, and the proper Loo Choo Islands. 26. SuHRiA Japonica: fronde costa crassissima percursa lineari (prolificationibus a costa et margine emissis) decomposite ramosa, margine integerrimo ; sporophyllis ? sa3pius varie lobatis, apicibus ob- tusissimis. Simoda, Japan. 27. Caulacanthus compressus : fronde pusilla dichotomo-multi- fida fastigiata, laciniis primariis sursum latioribus compressisque, stipite ramulisque teretibus, axillis rotundatis, ramulis spinicformibus sparsis patentibus simplicibus ramosisve. Loo Choo Islands ; in rock-pools. 28. Galaxaura distenta : fronde tenui subcompressa continua 332 PROCEEDINGS OF THE AMERICAN ACADEMY nitida decomposite dichotoma fastigiata, laciniis infra axillas cuneato- dilatatis complanatis, axillis obtusis, apicibus perfossis. Ousima, north of the Loo Choo group. 29. Gtmnogongrus ligulatus ; var. angustus : fronde stipitata plano-compi'Bssa rigide cartilaginea flabelhformi lineari dichotoma, axil- lis distantibus patentibus, ramis linearibus obtusis apice stepe proliferis. Simoda, Japan ; on rocks at low tide. 30. GiGARTiNA lancifolia : stipite tereti-compresso ramoso ; ramis basi compressis subcanaliculatis apice in folia lanceolata plana ciliata utrinque spinulis conspersa desinentibus. Hakodadi Bay, Japan ; on rocks at low tide. 31. GiGARTiNA AFFiNis : stipite tereti-compresso dichotomo ; ramis frondes dichotomo-decompositas fastigiatas gerentibus, segmentis mar- gine incrassatis subcanaliculatis pluries furcatis, laciniis linearibus, apicibus obtusis ; papillis nuUis ? (Aff. G. mamillosce.) With the preceding. 32. GiGARTiNA TENELLA : fronde pusilla compressa anguste lineari distiche ramosa, ramis alternis sparsisve arcuatis attenuatis, ramulis paucis subulatis patentibus stepius secundis, apicibus acutis. Kaikai-sima, north of the proper Loo Choo group. 33. Halosaccion (Haloccelia) Japonicum, Harv. (charac. emendato) : fronde simplicissima cartilaginea rigida basi et apice at- tenuata ramulis crebris patentibus filifoi'mibus densissime obsessa. Hakodadi, Japan. 34. Halosaccion (Haloccelia) Wrightii: fronde tenui-mem- branacea flaccida simpliciuscula basi et apice attenuata pinnatim ramosa, pinnis pinnulisque patentibus utrinque attenuatis acutis subdistichis. Hakodadi, Japan. 35. Halosaccion (Haloccelia) intestinalis : fronde clavato- intestingeformi longissima simplicissima basi attenuata apice obtusissima coriacea ; strato peripherico crasso filis verticalibus constituto tetra- sporas oblongas includente. Arakamtchetchene Island, within Behring's Straits. 36. Gloiopeltis coliformis : fronde intestinaeformi membranacea (filo centrali mox evanido) cava et inflata subsimplici basi et apice I OF ARTS AND SCIENCES. 333 attenuata nunc apice prolifera nunc furcata; cystocarpiis numero- sissimis. Japan {Dr. Bahington) : Ilakodadi and Straits of Sangar. 37. Endocladia complanata : fronde ex stipite tereti mox com- pressa tunc complanata decomposite dichotoma, laciniis lato-linearibus vel cuneatis ex margine et disco ramulos spinosos emittentibus margine fimbriatis. Simoda, Japan ; on rocks near high-water mark. 38. Caulerpa Amicorum : surculo crassiusculo glabro ; ramis erectis basi nudis vage decomposite ramosis ramulis virgatis, ramentis bi-trifariis subulatis incurvis acutis, inferioribus brevissimis conicis, (Harv. Alg. Ins. Amic. no. 62.) Ousima, north of the proper Loo Choo Islands. (Friendly Islands, of larger size.) 39. Caulerpa brachtpus : surculo glabro ; phyllodiis subses- silibus elliptico-oblongis basi et apice obtusissimis planis enervibus integerrimis nunc hie illic constrictis vel proliferis. Tanegasima, Japan. HALICORYNE, Harv. (Nov. Gen.) Frons calcareo-incrustata, claviformis, simplex, ex axi tubuliformi monosiphonio continuo ramulisque verticillatis saccatis unicellulosis demum sporiferis constituta. Sporae ex materia viridi ramulorum vetustorum formatog, numerosse, sphtericse, nucleo denso viridi in peri- dermide hyalino membranaceo incluso. — Alga habitu Dasyclado prox- ima, fructu substantiaque diversa. 40. Halicortnne Wrightii. — Loo Choo Islands ; in muddy pools, at low tide. Thinly incrusted with carbonate of lime. 41. Valonia Forbesii : cellula maxima pyriformi incurva basi in stipite infundibuliformi attenuata. Loo Choo Islands. (Also Ceylon.) 42. Enteromorpha ciERULESCENS : fronde ca3rulescente mem- branacea longissime tubulosa vage ramosa, ramis filiformibus attenuatis simiplicibus, ramulis sparsis setaceis. Loo Choo Islands ; in stagnant pools of fresh water. 43. Cladophora "Wrightiana : maxima, ultra setacea ; fronde stipitata rigide membranacea I'obusta trichotoma, ramis bis terve divisis 334 PROCEEDINGS OF THE AMERICAN ACADEMY discretis erectis, ultimis virgatis; ramulis oppositis ternisve appressis 1 - 2-cellulosis ; articulis inferioribus diametro multoties ramulorum 5 - 10-plo longioribus ad genicula constrictis ; apicibus obtusis. Simoda, Japan ; in rock-pools at low water. 44 Cladophora Stimpsoni : coespitosa, capillaris ; fronde tenui- membranacea flaccida lajte virente di - trichotoma, axillis majoribus iistantibus patentibusque, ramis pluries fui'catis, ramulis ad ramos minores superiores SEepius pectinato-secundis longiusculis ; articulis in- ferioribus longissimis filiformi-cylindraceis ; ramulorum diametro 5-8- plo longioribus ad genicula subconstrictis ; apicibus subacutis. Hakodadi Bay, Mr. Stimpson. 45. Cladophora densa: dense cjespitosa, fastigiata; fronde basi radicante erecta stipitata biunciali capillari rigidiuscula dicbotoma ; ramis pluries furcatis erectis, superioribus alternis sparsisve, araulis paucis ; articulis primariis longissimis, cieteris diametro 5 — 10-plo lon- gioribus ad genicula constrictis ; apicibus obtusis. Hakodadi Bay, Japan ; on rocks at half-tide. 46. Cladophora fastigiata: casspitosa, nigro-viridis, basi radi- cans ; fills vix uncialibus setaceis rigidis strictis trichotomis pluries divisis fastigiatis, ramis ramulisque omnibus oppositis erectis vel ap- pressis ; articulis diametro 8 - 10-plo longioribus, apicibus obtusis. Loo Choo Islands. 47. Cladophora oligoclada : ctespitosa, Itetevirens, mollissima, lubrica ; fills elongatis (3 — 4-uncialibus) capillaribus parcissime vage et distanter ramosis, ramis longissimis simpliciusculis, ramulis secundis brevissimis unicellulosis ; articulis ramorum diametro 4 - 6-plo longi- oribus materie viridissima repletis pellucido-marginatis. Loo Choo Islands. 48. Cladophora uncinella: pusilla, uncialis, densissime cKspi- tosa, tetevirens ; fills trichotome ramosissimis capillaribus rigidiusculis ; ramis primariis secundariisque oppositis, penultimis ramulisque falcato- secundis crispatis ; ramulis valde hamatis ; articulis primariis diametro pluries ramulorum 4 - 5-plo longioribus ; geniculis contractis. Ousima, north of the proper Loo Choo Islands. 49. Cladophora polaris : crespitosa, lietevirens, mollis, nitlda ; fills capillaribus strictissimis decomposite ramosis ; ramis ramulisque erectis (axillis angustissimis), superioribus clavato-incrassatis succu- I OF ARTS AND SCIENCES. 335 lentis obtusissimis ; articulis inferioribus diametro 2 - 3-plo supremis multoties longioribus. Semiavinia Bay, Arctic Asia. (Also at Whalefish Islands, Davis's Straits, and in the Arctic Ocean, lat. 76°, Dr. Lyall.) 50. RivuLARiA orACA: fronde (minori) vesiculosa difformi rigida opaca nigro-viridi ; filis moniliformibus laxiusculis. Loo Choo Islands. 51.-Ltngbta ATROVIRENS : cosspitibus longe fluitantibus atrovi- rentibus comosis ; filis crassiusculis liberis glaucis densissime striatis ; vagina crassa subopaca scepe rugosa. Loo Choo Islands. 52. Lyngbya effusa : ca3spite effusa nigro-viridi ; filis semiunciali- bus tenuibus intricatis flexuosis glaucis ; vagina angusta loevi. Loo Choo Islands. An obscure production. 53. Lyngbya atropurpurea : coespite atropurpurea comosa ; filis tenuissimis fluitantibus strictiusculis violaceis, striis inconspicuis. (Harv. Alg. Ins. Amic. no. 118.) Bonin Islands ; on corals. (Also at the Friendly Islands.) 54. Chroolepus Chinensis : majuscula, rupestris ; filis in ctespite (2-unc.) tomentosa luteo-viridi siccitate pallide glaucescenti inter- textis decumbentibus vage ramosis ; ramis horizontaliter patentibus recurvis sa^pius secundis ; ramulis paucis multisve patentibus ; sporidiis lateralibus sparsis ; articulis diametro duplo longioribus. Hong Kong ; on damp rocks in the mountains. Four Iiundred and seventy-lirst meeting. November 9, 1859. — Stated Meeting. The President in the chair. The Corresponding Secretary read several letters relative to the exchanges of the Academy. He also read a " Note upon the Allanite found at East Bradford, Pennsylvania, by William Sharswood, A. M." Professor Gabriel Valentin, of Berne, Switzerland, was elected a Foreign Honorary Member in Class II. Section 2 (Botany). 336 PROCEEDINGS OF THE AMERICAN ACADEMY The following Associate Fellows were elected : — Professor George C. Swallow of Columbia, Missouri, in Class 11. Section 1 (Geology, Mineralogy, and Physics of the Globe). Hon. Samuel G. Arnold, of Providence, in Class III. Sec- tion 3 (Political Economy and History). Edward B. Hunt, U. S. A., in Class I. Section 3 (Physics and Chemistry). The following Fellows were elected : — Calvin Ellis, M. D., in Class II. Section 4 (Medicine and Surgery). Theodore Lyman, in Class 11. Section 3 (Zo(31ogy and Physiology). E. S. Ritchie, in Class I. Section 3 (Physics and Chem- istry). Professor Lovering inquired whether the following extracts from Winthrop's History of New England do not indicate the appearance of the Aurora in this country at a much earlier date than that assigned to it in Holmes's Annals : — " About raidniglit three men, coming in a boat to Boston, saw two lights arise out of the water near the north point of the town cove, in form like a man, and went at a small distance to the town, and to the south point, and there vanished away." " The like was seen by many, a week after." In the second case : — " A light, like the moon, arose about the northeast point in Boston, and met the former at Nottles Island, and there they closed in one, and then parted, and closed and parted divers times, and so went over tlie hill in the island and vanished. Sometimes they shot out flames, and sometimes sparkles." This was on the 11th and 18th of April, 1643. Professor Lovering, in behalf of the Committee of Publi- cation, made the following report in regard to the printing of Part I. of Volume II. of the Old Series of Memoirs, ordered by the Academy at the last annual meeting. OF ARTS AND SCIENCES. 337 The Committee had directed 200 copies of this Part to be printed. They had also found it necessary to print 200 copies of Judge Davis's Eulogy upon Washington, belonging to the second part of the same volume. This republication will enable the Academy at once to real- ize 92 complete sets of the First Series of Memoirs ; and the reprint hereafter, when the necessity arises, of another small portion, will make complete 100 more sets. For there are in the possession of the Academy 237 copies of Volume I. There are only 3 copies of Vol- ume II. There are 18 additional copies of Part II. of that volume. There are also 100 additional copies of Part II., with the exception of Judge Davis's Eulogy on Washington. There are besides 68 extra copies of Plate I., 27 extra copies of Plate II. ; and the stone on which the illustration of Dighton Rock is drawn is also in posses- sion of the Academy. Of Volume III. there are 57 complete copies. Then there are 64 separate copies of Part I. and 35 of Part II. Of Volume IV. there are 245 complete copies ; and, in addition, 3 of Part I. and 78 of Part II. As the 24 additional pages to be printed, and the supply of three woodcuts and a lithographed plate, have made the cost of republication exceed by $50 the appropriation for this special purpose ($200), the committee recommend that a subscription paper be opened to members of the Academy for complete sets of the Old Series of Memoirs, at $3 a volume, or S 12 the set. If 20 sets were purchased, the cost of republication would be repaid to the Academy, and 72 complete sets would remain immediately available. Dr. Jenks gave an account of the organization of a literary and scientific society at Shanghae. Dr. J. B. S. Jackson exhibited a portion of a glass tube which was accidentally broken while drawing a sponge through to clean it ; one piece of which exhibited a very regular spiral crack running from end to end. Professor W. B. Rogers said he thought the direction of the crack might result from an equality between the cohesive attraction of the particles in a transverse and longitudinal direction, causing the line of fracture to follow the diagonal of these forces. VOL. IV. 43 338 PROCEEDINGS OF THE AMERICAN ACADEMY Professor Levering suggested whether the nodal lines of acoustic vibration had anything to do with the phenomenon. Professor Peirce made an elaborate communication on the tides. Professor W. B. Rogers gave an account of some experi- ments which he had been making on the phenomena of sub- jective vision, to settle the question whether the two eyes combined successively the different points of an object, as Brewster supposed, or obtained an instantaneous recognition of all parts at the same moment. Mr. F. H. Storer read by title a " Memoir on the Alloys of Copper and Zinc." He also presented the following communication : — On the Detection of Chrotnium in Presence of Iron. It is customary, in the methods of analysis now most commonly em- ployed in laboratories of instruction, to rely upon the solvent action which the caustic alkalies exert upon hydrated sesquioxide of chromi- um as a means of separating this base from the oxides closely allied to it. It is well known, however, and the experiments of Northcote and Church * have determined the fact quantitatively, that when a small amount of sesquioxide of chromium is accompanied by a large quantity of the oxides of manganese, cobalt, nickel, or of sesquioxide of iron, it ceases to be soluble in the alkalies. From the frequency of its occur- rence, as well as from the fact that it has the power of concealing a larger amount of chromium than either of the other bases which have been mentioned, the sesquioxide of iron in particular gives rise to much inconvenience in practice. It is a constant source of annoyance to beginners, who almost invariably fail to detect the presence of chro- mium in solutions containing it given them for analysis, if these at the same time contain iron also. In this case it may be detected, it is true, by fusing the mixed precipitate of oxide of iron and of chromium with nitrate of potash and carbonate of soda, and examining the aque- ous solution of the mass obtained for chromic acid ; but the student seldom applies this test, unless specially directed to do so. The oper- ation is troublesome, since it necessitates the employment of a special * Qu. J. Chem. Soc , VI. 53. OF ARTS AND SCIENCES. 339 set of tools, and occupies considerable time. It is as a rule distasteful to the student, and is rarely resorted to even by experienced analysts, unless the color of the solution, a preliminary blowpipe test, or some incidental observation, has already indicated the probable presence of chromium in the substance under examination. It is obvious, that if the chromium in the mixed precipitate could be oxidized in the wet way by some simple and rapid method, it would not only be more readily detected in any case, but the chances of overlooking it altogether — an event now so liable to occur — would be materially lessened, Frommherz * long ago noticed that chromic acid is formed when an aqueous solution of a salt of chromium is treated with a solution of permanganate of potash, — a fact which has since been corroborated by Reynoso,t and still more recently by Cloez and Guignet.j Rey- noso has suggested, moreover, that this reaction may be employed for the detection of chromium, especially if the chromic acid formed be subsequently converted into Barreswil's perchromic acid. Chancel,§ on the other hand, has observed that chromic acid is formed when sesquioxide of chromium is heated with solution of caustic potash in presence of peroxide of lead ; as may be shown by acidify- ing the filtrate from this mixture with acetic acid, chromate of lead being precipitated. He has also proposed || that this reaction shall be used as a test for the detection of chromiuni. After a number of experiments upon the subject, I have satisfied myself that peroxide of lead is as good an agent as any at our disposal, if it is not the best, for effecting the oxidation of sesquioxide of chro- mium by the wet way, while the formation of perchromic acid is un- questionably the most delicate and characteristic reaction for chromic acid which we possess. This note, therefore, must be considered as being merely supplementary to the statements of Chancel and Reynoso. Besides the observations of these chemists are those of Balard,^ * Schweigger's Journal f. Ch. u. Phys., 1824, XLI. 281. t Ann. Ch. et Phys., 1851, (3), XXXIII. 324. t Comptes Eendus, XL VII. 712. § Comptes Eendus, XLIII. 928. II Loc. cit , and Precis d' Analyse Chimique Qualitative, par Gerhardt et Chancel, (Paris, 1855,) pp. 112, 289. 1 Ann. Ch. et Phys. (2), LVII. 266. 340 PROCEEDINGS OF THE AMERICAN ACADEMY that oxide of chromium is immediately changed to chromic acid when treated with a solution of hypochlorous acid ; and of Carney,* who has found that chromic acid is produced when a galvanic current is caused to flow through a dilute solution of caustic alkali in which ses- quioxide of chi'omium, even that which has been ignited, is suspended. For my own part, I have observed that sesquioxide of chromium may be converted into chromic acid in the wet way by the agency of several substances besides those already mentioned, and that the pres- ence of free alkali, so far from being necessary, as has been implied by previous observers, with the exception perhaps of Frommherz, is not by any means essential in most instances to the success of the opera- tion, oxidation occurring very readily in several cases in strongly acid solutions. A dilute solution of chrome alum — which by experiment was as- certained to contain no chromic acid — was acidulated with sulphuric acid, a little peroxide of lead was added, and the whole boiled ; on- filtering, the solution was found to be of a yellow color, and readily afforded the reaction of chromic acid when tested with dilute solution of peroxide of hydrogen, viz. a magnificent blue coloration due to the formation of perchromic acid. A solution of permanganate of potash, acidulated with dilute sul- phuric acid, being substituted for the peroxide of lead in the preceding experiment, produced a similar result. Peroxide of manganese also replaces perfectly the peroxide of lead in this experiment. It is not even necessary that these mixtures should be heated. Dilute solution of chrome alum, acidulated with sulphuric acid, and mixed with a small portion of peroxide of lead, having been allowed to stand in the cold, was found to contain traces of chromic acid at the end of half an hour ; after standing eighteen hours, a considerable quantity of chromic acid had formed. A similar solution, in which peroxide of manganese was used instead of the peroxide of lead, gave a fine reaction of chromic acid at the end of eighteen hours. A quantity of solution of permanganate of potash, acidulated with dilute sulphuric acid, having been added to a dilute solution of chrome alum, also acidulated with sulphuric acid, retained its purple color after * Proceedings of Boston Society of Natural History, VI. 409. OF ARTS AND SCIENCES. 341 having stood in the cold during twenty-four hours ; at the end of this time, bits of paper were introduced in order to destroy this color, after effecting which, the solution was tested : it contained no inconsiderable amount of chromic acid. The foregoing experiments were all repeated, with almost absolutely identical results, with solutions prepared by dissolving chemically pure hydrated sesquioxide of chromium in dilute sulphuric acid. The for- mation of chromic acid in the cold may have been a little less rapid in this case than in the experiments with chrome alum ; the mixture containing peroxide of lead, however, afforded an abundance of it when tested after having stood two hours, and still more at the end of twenty-four hours. That containing peroxide of manganese also gave a fine reaction of chromic acid after standing twenty-four hours. The trial with acidulated permanganate of potash was not tested until the purple color of the solution had disappeared ; this was found to have occurred after the expiration of forty-eight hours ; the solution was then yellow, and afforded the reaction of chromic acid. Sesquioxide of chromium, dissolved in dilute nitric acid, is also con- verted into chromic acid when the solution is boiled with peroxide of lead, with peroxide of manganese, or with a solution of permanganate of pot- ash acidified with dilute nitric acid ; minium produced the same result, though somewhat more slowly. This action is much less rapid in the cold ; the sample tested with permanganate of potash contained chromic acid after having stood during twenty-four hours ; the solution to which peroxide of lead had been added assumed a decided yellow color, and afforded the reaction of chromic acid after standing three or four days ; but the portion which had been mixed with black oxide of manganese gave rto^ indication of chromic acid when examined at the end of the fifth day. When dilute chlorhydric acid is used, instead of the sulphuric or nitric acids of the preceding experiments, similar results are obtained ; at least with peroxide of manganese and with solution of chameleon mineral, both in the cold and when heated. "With peroxide of lead, however, the results are less satisfactory. I have not been able to obtain any decisive indication of the formation of chromic acid in this experiment, but at the same time am not sure that minute traces of it may not have been present. The conversion of the peroxide into chloride of lead apparently interferes with the production of chromic acid. 342 PROCEEDINGS OF THE AMERICAN ACADEMY In concentrated sulphuric acid sesquioxide of chromium is evidently slowly converted into chromic acid by the action of peroxide of lead, even in the cold, since the solution becomes yellow after standing eighteen or twenty-four hours. This action is very rapid if the mix- ture be heated, a fine yellow solution being obtained at once. I have, nevertheless, found it somewhat difficult to prove the presence of chromic acid in this solution, since it appears to be decomposed when diluted with water. ' With peroxide of manganese, a yellowish solution is also readily obtained by boiling. In the cold, no reaction could be perceived at the end of five days. "When a solution of sesquioxide of chromium in concentrated sul- phuric acid is boiled with a small quantity of chlorate of potash, chro- mic acid is formed. With very dilute sulphuric acid, this does not at once occur ; but after boiling for some time, the acid becomes more concentrated, and a portion of the chromium is then oxidized. Nitrate of potash produces no similar result when used instead of the chlorate in this experiment. When dissolved in concentrated nitric acid, sesquioxide of chromium is slowly oxidized by peroxide of lead in the cold, abundant indications of it having been obtained at the end of eighteen hours. The reaction occurs at once if the acid be boiled. Minium also, when boiled with solution of sesquioxide of chromium in concentrated nitric acid, rap- idly converts it into chromic acid. With peroxide of manganese, no chromic acid was obtained, either by boiling or after standing in the cold during a week. When a solution of sesquioxide of chromium in concentrated nitric acid is boiled with a small quantity of chlorate of potash, the chromium is rapidly and completely converted into chromic acid. With very dilute nitric acid this does not occur. Nitrate of potash having been substituted for the chlorate in this experiment, no chromic acid was formed. With concentrated chlorhydric acid and the above-mentioned oxi- dizing agents, only negative results were obtained. As a general rule, it is not easy to oxidize sesquioxide of chromium in the presence of free chlorhydric acid, — a fact which accords with the well-known re- ducing action exerted by this acid upon solutions of chromic acid or of its salts.* * Vid. Rose, Handbuch der analytischen Chemie, I. 355 (Braunschweig, 1851). I OF ARTS AND SCIENCES. 343 When dissolved, or merely suspended in dilute aqueous solutions of the fixed alkalies, sesquioxide of chromium is readily converted, even in the cold, into chromic acid, by the action of the peroxide of lead and of manganese, by permanganate of potash, and with peculiar rapidity and comjileteness by Bromine. The application of heat favors the reaction in each of these instances. Iodine, also, at least when the mixture is heated, appears to behave like bromine ; the oxidation is, however, much less rapid. Chromic acid is also formed when red oxide of mercury or hypochlorite of lime is heated with a mixture of ses- quioxide of chromium and solution of caustic alkali; none was ob- tained by the action of stannic or of arsenic acid, nor can minium be used in place of peroxide of lead, since it does not appear to exert any oxidizing action upon sesquioxide of chromium when in presence of the alkalies. When mixed with ammonia, oxide of chromium is readily oxidized by peroxide of lead, peroxide of manganese, or by solution of chame- leon, the free alkali of which has been neutraUzed, if heat be applied. A similar oxidation also occurs, though slowly, in the cold. With bro- mine no chromic acid was obtained, — a result not at all surprising, in view of the violent reaction which occurs when this substance is mixed with ammonia. In studying the reactions which have just been described, I was met at the outset by the difficulty that none of the tests for chromic acid — viz. precipitation of sparingly soluble chromates of the metallic oxides — which are in common use were sufficiently delicate for the purpose. Indeed, besides the yellow color of solutions of the chromates, which is of course far from being characteristic, there is no test for traces of this acid which is susceptible of rapid and general application, except- ing the formation of perchromic acid by means of peroxide of hydro- gen. Having, like Reynoso, been compelled to resort to this reaction, I have found it incomparably more sensitive and characteristic than any of the other tests for chromic acid. Taken in connection with the yellow color of solutions containing chromates, it affords a test of remarkable delicacy. It depends, in brief, upon the fact, that when a solution containing chromic acid is poured into a dilute * solution of per- * It is of the first importance that the sohitioiis used should be dilute, since no perchromic acid is formed in concentrated solutions ; or if formed, it is decomposed again instantly. 344 PROCEEDINGS OF TUE AMERICAN ACADEMY oxide of hydrogen, perchromic acid is formed ; this imparts a beautiful, though exceedingly evanescent, blue color to the solution. The per- chromic acid is soluble in ether, which removes it from its solution in water without injuring its color, which indeed disappears far less rap- idly from the ethereal than from the aqueous solution. The details of the process to be followed in applying this test may be found in Barreswil's Memoir upon Perchromic Acid.* I have obtained satisfactory results by operating as follows. A so- lution of impure pei'oxide of hydrogen is prepared by triturating per- oxide of barium with water in a porcelain mortar, and pouring the thin paste obtained by small portions into a quantity of common chlor- hydric acid, which has previously been diluted with four or five parts of water, the latter being agitated meanwhile with a glass rod. The solution thus obtained may be kept for a considerable time without undergoing change. I have not, for that matter, noticed any decom- position in those with which I have operated. A piece of peroxide of bai'ium as large as a pea is more than suffi- cient to prepare 150 cubic centimetres of the solution. In testing, some six or eight cubic centimetres of the solution of peroxide of hy- drogen are to be placed in a narrow test-tube, and covered with a layer of ether about half a centimetre in thickness. The solution sus- pected to contain chromic acid is now to be poured little by little into the solution of peroxide of hydrogen, the tube which contains the latter being closed with the thumb, and gently inverted after each ad- dition, so that the ether may dissolve the perchromic acid as fast as it forms. All violent agitation of the mixture is to be avoided, since it tends to hasten the destruction of the blue color. The result of the test can hardly be deemed satisfactory, unless a blue ethereal solution is obtained, for many of the salts of chromium impart a bluish-purple color to their aqueous solutions. Since this color is persistent, how- ever, it cannot be confounded in any case with the fugitive blue of perchromic acid, although it might at times conceal the latter so long as it remained dissolved in the water ; for the rest, it is absolutely in- soluble in ether. One or two experiments regarding the delicacy of the reaction may be mentioned in this connection. A solution containing one part of * Ann. Ch. et Phys. (3), XX. 364. OF ARTS AND SCIENCES. 345 noi'mal cliromate of potash in 20,000 parts of water afforded a per- fectly distinct blue ethereal solution of perchromic acid, when tested with peroxide of hydrogen as above described. A solution of one part chromate of potash in 30,000 parts of water also gave a distinct reaction, though the blue color was less deep than in the preceding ex- periment. With 40,000 parts of water the reaction was faint, though still discernible ; as much so, perhaps, as the yellow of the aqueous so- lution of the chromate. I have also detected, by means of this test, the presence of chromic acid in the aqueous solution of a bead, of ordinary size, obtained by fusing sesquioxide of chromium with borax in a loop of platinum wire in the oxidizing flame of the blowpipe. Plattner * had already sup- posed that the yellowish color, which compounds of chromium impart to borax in the oxidizing flame, was due to formation of chromic acid. It is doubtful, however, whether the fact has been previously experi- mentally proved. Several experiments have also been made in order to ascertain whether the presence of peroxide of iron would interfere with the oxidation of the sesquioxide of chromium. "Weighed portions of pro- tosulphate of iron were boiled with nitric acid in order to oxidize the iron, and mixed with weighed portions of clirome alum ; the solutions were then treated with a slight excess of caustic ammonia, and boiled. After washing the precipitates formed, they were subjected to the action of oxidizing agents. I have operated upon mixtures composed of: — No. 1. Grammes. OO FeOS03 + 7aq ^ Grammes. Per cent. FeOu 0.8633 or 84.81 1.00 KOSO3; Cr^Os, 3 S03 + 24aq^ Cr^Oa 0.1546 or 15.19 No. 2. 3.00 FeOS03 + 7aq •) FeOi, 0.8633 or 91.78 0.50 KOSO3; Cr2 03,3 S03 + 24aqi Cr^Os 0.0773 or 8.22 No. 3. 5.00 FeOS03 + 7aq ^ FeOu 1.4389 or 97.38 0.25 KOSO3; Cr203,3 S03 + 24aqJ^ Cr^Oa 0.0387 or 2.62 * ProBirkunst mit dem Loethrohre, von Plattner, (Leipzig, 1853,) S. 144. VOL. IV. 44 346 PROCEEDINGS OF THE AMERICAN ACADEMY No. 4. Grammes. 10.00 FeOS03 + 7aq ^ 0.25 KOSO3; Cr^Oa, 3 SO3+ 24aql Grammes. Per cent. FeOu 2.8777 or 98.73 Cr^Oa 0.0387 or 1.27 FeOu 5.7554 or 99.33 Cr,03 0.0387 or 0.G7 No. 5. 20.00 FeOS03 + 7aq ] 0.25 KOSO3; 0-2 03,3 SO3 + 24 aq! Portions of the precipitate produced by ammonia in each of these solutions were dissolved in chlorhydric acid, and a part of this solution was treated with an excess of cold potash lye of sp. gr. = 1.305 ; an excess of caustic soda of sp. gr. = 1.07 being added to another por- tion. After standing in the cold, out of contact with the air, during eighteen hours, the alkaline mixtures were filtered, and the filtrates thoroughly boiled. No precipitate of sesquioxide of chromium was produced in any of them, nor did these filtrates afford any chromic acid when boiled with peroxide of lead. Other portions of the moist original precipitates were dissolved in chlorhydric acid, and these solutions treated with a slight excess of dilute caustic soda. A small quantity of peroxide of lead was now added to the mixture, and the whole thoroughly boiled during two or thi*ee minutes. On filtering, yellow-colored solutions were obtained in every instance, and on testing these with peroxide of hydrogen the characteristic reaction of chromic acid was very distinct in each. The oxide of chromium in other portions of all of the original pre- cipitates was also readily oxidized by boiling them with bromine in presence of free alkali, as well as by dissolving them in concentrated nitric acid, and boiling this solution with chlorate of potash. The presence of chromium was, moreover, readily detected in Nos. 1 and 2 by boiling a mixture of precipitate and alkali with peroxide of man- ganese, or with permanganate of potash ; but as these substances are evidently less conveniently applied than the others which I have men- tioned, no further experiments were made with them. It should perhaps be stated, that the experiments upon the precipi- tate from mixture No. 5 were made upon portions of it weighing two or three grammes, the entire weight of the moist precipitate being something more than a hundred grammes. Among the various agents capable of oxidizing oxide of chromium OF ARTS AND SCIENCES. 347 when in presence of sesquioxide of iron, it is not at first sight easy to decide which one should be preferred to the others for common use. Bromine in presence of the alkalies appears to be the most powerful of them, but since the acid solution of peroxide of hydrogen, which is used in testing, would react upon any bromide which might have been formed in the alkaline solution, bromine would be liberated, and, by imparting its color to the ether, would obscure the reaction. A similar objection applies of course to iodine. This difficulty is easily overcome by neutralizing the alkali with nitric acid, and boiling for a few minutes to expel the bromine : an objection to this process, how- ever, is the fact that the solution is considerably diluted thereby. Chlorate of potash, with concentrated nitric acid, is in some respects a very convenient agent : objections to it are, that some of the products of the decomposition of the chlorate which remain in the solution, appear to interfere with the formation of perchromic acid ; moreover, if any nitrate of chromium remain unoxidized in the solution, it will impart a bluish-purple tint to the aqueous solution of peroxide of hy- drogen, which, though insoluble in ether, often interferes very materially with the detection ©f the color of perchromic acid, if only traces of the latter are present. This remark applies to any process of oxidation in which nitric acid is employed. Both of these difficulties can gener- ally be avoided by diluting the nitric acid solution with water, and using a quantity of ether somewhat larger than is usually necessary In any case where hyponitric acid is generated, it dissolves in the ether, and may conceal the blue color of perchromic acid. Black oxide of manganese is not only a less energetic oxidizing agent than pm'oxide of lead, but the chromate formed in its presence does not color the solution so strongly. The latter remark applies also to permanganate of potash, another objection to which is the necessity of destroying its own color whenever it has been used in excess, be- fore testinsf for chromic acid. On the other hand, the reagent of Chancel, peroxide of lead, is capa- . ble, as I have shown, of oxidizing sesquioxide of chromium, even when in presence of an enormous excess of peroxide of iron. It has none of the disadvantages of the other substances to which allusion has been made, and is especially to be preferred, since the chromate formed in its presence imparts an intense yellow color to the alkaline solution. I 348 PROCEEDINGS OF THE AMERICAN ACADEMY It must be remembered, however, that this coloration, although a very delicate, is by no means a characteristic test,* and that the pres- ence of even considerable quantities of chromic acid cannot be de- tected in the solution by the methods in common use. For example the yellow-colored filtrate obtained after having boiled a portion of the precipitate from mixture No. 3 (which contained more than 2.5 per cent of sesquioxide of chromium) with a solution of caustic soda and some peroxide of lead, was slightly acidified with acetic acid, care being taken not to dilute the solution unnecessarily. No precipitate was formed even after the lapse of forty-eight hours ; the solution still retained its yellow color, however, and afforded a fine blue ethereal solution when treated with peroxide of hydrogen. Even in experi- ment No. 1, the yellow alkaline solution of chromate of lead gave no immediate precipitate when neutralized with acetic acid, nor did any appear until after the lapse of considerable time. When concentrated alkaline solutions are used in conjunction with the peroxide of lead, it is best to acidify them, before testing with peroxide of hydrogen, since the reaction might otherwise be disturbed. This is not necessary, however, when dilute alkali is used. The methods of oxidizing chromium which have been discussed in this article are of course applicable to a great variety of cases. I have only specially treated of the one in which this oxide is concealed by an excess of peroxide of iron, since an improvement upon the ordi- nary processes seems to be peculiarly needed in this instance. It will be found, however, that, with the exception of the blowpipe tests, none of the methods for the detection of chromium which are now in use can be compared with the one herein proposed. An apparent objection to this process is the doubt which suggests itself whether peroxide of hydrogen may not be capable, under some circumstances, of producing perchroraic acid when mixed with solu- tions, not only of chromic acid, but also of simple sesquioxide of chromium. It is indeed somewhat strange that this should not be the case. I have not, however, been able to effect such transforma- tion, although I have made a large number of experiments with so- lutions and mixtures of the sesquioxide in the mineral acids and in alkalies, under the most varied conditions as regards their temperature * It is probable that by the use of the prism, as proposed by Gladstone (Qu. J. Ch. See., X. 79), these colored solutions might be satisfactorily tested for chromic acid. OF ARTS AND SCIENCES. 349 and state of concentration. In short, I have seen nothing which mili- tates in the least against the accui*acy of the test. It is true that, when peroxide of barium is itself added to a solution of sesquioxide of chromium in caustic alkali, and the whole is boiled, a certain quantity of chromic acid is obtained. I have not been able to procure any, however, by operating in the cold. With caustic ammonia and peroxide of barium, the chromium is gradually converted into a violet ammonia-chromium base in the cold. On boiling the original mixture, a quantity of chromate of baryta is formed. But when in solution in acids, sesquioxide of chromium does not appear to be converted into chromic acid by the action of peroxide of barium, either in the cold or when heated. Four hundred, and seventy-second meeting. November 22, 1859. — Monthly Meeting. The President in the chair. The Corresponding Secretary read letters of acceptance from the Hon. S. G. Arnold of Providence, and Captain E. B. Hunt, United States Engineer, who were elected Fellows at the last stated meeting. Mr. C. B. Elliott read a paper upon The Influence of Legislation on Registration in Massachusetts. The results in the following table are deductions from data fur- nished by the Annual Reports of the Secretary of the Commonwealth, relating to the registry and return of births, deaths, and marriages in Massachusetts for the seven years from May 1st, 1841, to April 30th, 1848 (inclusive) ; for the nine years from January 1st, 1849, to De- cember 31st, 1857 (inclusive); and from data furnished by the na- tional enumerations of the population of the State made in the years 1840 and 1850, and the State enumeration of 1855. The table exhibits the ratios of the births, the deaths, and the mar- riages, registered in each of the years above mentioned, to the popula- tion, estimated for the middle of each year. Also, the average of each class of these ratios for the two years immediately preceding the op- 350 PROCEEDINGS OF THE AMERICAN ACADEMY eration of the act of the Legislature approved in 1844 ; the average for the Jive years intervening between the operation of the act of 1844 and that of 1849 ; and the average for the eiffht or for the nme years follow- ing the act of 1849. It also presents, for comparison with the foregoing, like ratios for one hundred and sixty-six towns of Massachusetts in 1855, which towns comprise about two thirds of the population of the State, and which were selected, as furnishing trustworthy data, as the basis of the construction of a Life Table for the State.* The table also shows the greatest, the least, and the average ratios for England for the nine- teen years 1838-56, the period during which an efficient system of registration has there been in operation. Inspection of these results shows that the passage of the acts of 1844 and 1849 produced an immediate and marked influence on the completeness of the returns ; and also that the ratios, when not dis- turbed by legislative enactments, remain comparatively constant, year by year. These observations lead to the conviction, that, by judi" cious legislation at the present time, the returns for the year 18 GO, and all subsequent years, may be rendered so perfect, that cases will sel- dom or never escape notice. The ratios of the births, deaths, and marriages actually occurring in the State to the population of the State, probably do not greatly differ from those indicated by the returns of the one hundred and sixty-six towns in 1855 ; that is, thirty-one (31.2) births, twenty-one (21.4) deaths, and twelve (12.4) marriages to every thousand persons living. It will be observed that the legislation of 1844 improved the record of births, but rendered still more defective the record of deaths and of marriages ; the average of the annual ratios of the number of births to one thousand persons living, advancing from eleven to eighteen, but that of deaths receding from thirteen to eleven, and that of marriages from seven to six. The legislation of 1849 appears to have improved tlie returns of each of the three classes of events ; advancing the average of the rates of registered births from eighteen to twenty-nine, of registered deaths from eleven to eighteen, and of registered mar- riages from six to eleven to every thousand persons living. Accepting the returns of the one hundred and sixty-six selected towns of 1855 as furnishing just standards for comparison, it appears * See Proceedings of American Association for the Advancement of Science, Montreal Meeting, 1857, p. 51. OF ARTS AND SCIENCES. 351 that during the eight years 1850-57, eight per cent of the births, and ten (10.5) per cent of the marriages, and during the nine years 19)^^ - 61 , fourteen per cent of the deaths occurring in the State escaped registration. These deficiencies do not appear to have been uniform throughout the State, many of the towns making apparently full and trustworthy returns, while those of other towns are manifestly so incomplete as to be of little value. Few will be likely to estimate too highly the importance of a perfect system for the registration of the births, the deaths, and the marriages which occur in the State ; — first, historically and judicially, as facili- tating the legal descent of heritable property, and as determining the settlements of certain citizens (the latter now a source of frequent and vexatious litigation between towns) ; and, secondly, statistically, as af- fording fit material for the construction of life tables, not only for the entire State, but also for different localities, classes, and pursuits, and for the solution of many practical questions, the interest of which is not limited to the people of our own State or hemisphere. Ratios of the Births, Deaths, and Marriages, annually registered in Massachusetts, to 1000 Persons living at the Middle of each Tear ; also, the Average, the Greatest, and the Least Ratios for England for the Nineteen Year's 1838-56. Year. Births. Deaths. Marriages. Number of Report. May 1, 1841, to April 30, 1842, inclusive, 1842-3 11.1 10.9 12.3 13.3 7.4 7.3 I. II. Act approved March 16, 1844. 1843-4 1844-5 1845-6 1846-7 1847 - 8 17.9 18.3 18.7 18.9 17.8 10.3 10.3 10.5 12.1 12.1 5.2 5.7 6.0 6.0 5.7 III. IV. V. VI. VII. Act approved May 2, 1849. 1849 1850 1851 1852 26.5 27.8 28.0 28.3 21.0 16.7 18.5 17.6 7.1 10.4 11.7 11.0 VIII. IX. X. XL 352 PROCEEDINGS OF THE AMERICAN ACADEMY Year. Births. Deaths, Marriages. 28.6 18.8 11.9 28.9 19.3 12.4 28.9 18.3 10.9 29.7 17.8 10.6 29.7 17.9 9.9 Number of Report. 1853 1854 1855 1856 1857 XII. XIIL XIV. XV. XVI. Average of tioo years before Act of 1844, Average of five years before Act of 1849, Average of eight years, 1850-57, Births. 11.0 18.3 28.7 Deaths. 12.8 11.1 9 years, 1849-57. 18.4 Marriages. 7.3 5.7 11.1 Massachusetts. 166 towns, 1855 31.2 21.4 12.4 England and Wales. Nineteen years 1858-56, ( Average, ■< Greatest, ( Least, 32.9 34.5 (1856) 30.3 (1838) 22.4 25.1 (1849) 20.5 (1856) 8.2 8.9 (1853) 7.3 (1842) Professor Peirce explained the principles involved in esti- mating the actual value of the property of life assurance companies. Professor G. P. Bond stated that he had received from England a successful photograph of Donati's comet, taken near London by a common camera. It represented the nu- cleus with a small part of the tail. Professor Cooke made some remarks upon Mr. Storer's paper on the Alloys of Zinc and Copper (presented at the previous meeting), and illustrated the bearing of the facts determined by Mr. Storer, and of others observed by him- self, upon his view of the variation of chemical force. OF ARTS AND SCIENCES. 353 Four liuudred and seventy-third nneetiiig. December 13, 1859. — Monthly Meeting. The President in the chair. Professor James Hall made a detailed communication upon the fossil Crustacea of the genus Eurppterus, DeKay, its spe- cies, and their geological relations ; illustrated by a full suite of specimens, and by drawings. Professor Agassiz discoursed upon the morphology of ihe genus Euri/pterus, and its place in the zoological system. He considered it an undoubted member of the family to which Trilobites belong, and of which the genus Limulus is the pres- ent representative. Chief Justice Shaw read a paper upon the use of granite as a building material, and upon the introduction of the present mode of working it : — The discussions which have recently taken place respecting the Han- cock House have revived my recollections of the history of stone masonry and the use of gi'anite as a building material in Boston, and offer an oc- casion for stating vrhat appears to me to have been an important dis- covery in the art of w^orking granite within a comparatively brief period. It was said, I believe, of a great man of antiquity, as one of his highest claims to the gratitude of his countrymen, that he found the city of brick, and left it of marble. We think that every one feeling just sentiments of pride for the beauty, permanency, and grandeur of the city of his home, in the taste and utility of its public and private buildings, must take a deep interest in knowing the value, cheapness, and excellence of the building materials within its power for practical use. The vast number and magnificence of the granite buildings recently erected in various parts of the city increases the interest we naturally feel, in knowing the steps which have led to this extension of the art, by which granite is brought into use. My main object is to state a fact respecting it which I have never seen stated, which appears to me to be not generally known, and which came to my knowledge under such circumstances as to command my belief. It is believed that, although granite has always abounded near Bos- ton, it was not till some time in the earlier part of the last century VOL. IV. 45 354 PROCEEDINGS OF THE AMERICAN ACADExMY that it was used for the building material of houses, but was used only for wharves, cellars, and wells, where smooth and even walls were not required. It is believed that during the first century of the existence of Boston, when smooth building-stone was required to be used with brick building, as for basements, corners, window-frames, or the like, freestone was used, being the red-sandstone of Connecticut River. At some time between the end of the first quarter and the middle of the eighteenth century, that is, now a little more than one hundred years ago, the practice of stone-hewing and hammering for the working of granite was first introduced into Massachusetts by German emigrants. It is understood that Brigadier-General Waldo brought a colony of German emigrants from their native country, a large number of whom settled at a place called Germantown, then in the town of Braintree, now Quincy. A large part of this colony proceeded, under the care of General Waldo, to Maine, and settled in a new township thence called Waldoborough, from which many settlers of German origin spread into other towns in Maine. The Germans who remained in Braintree introduced several branches of the mechanic arts, which had not before been in use in this coun- try. That of stocking-weaving was one ; it was there introduced, and has been practised by their descendants until within a few years, if it is not continued to the present time. Another of the arts was glass-making, which was probably the first establishment of glass-works in this part of the country. They man- ufactured glass-ware and toys, and it is believed window-glass, though the glass was not sufficiently clear and transparent for good window- glass, and the business was mainly confined to green-glass bottles and other green-glass articles. Many families had quantities of bottles made and stamped with the family name on the bottle. Such a one is there occasionally seen. But what is more material to my present purpose is, that this class of German artisans first introduced into this country the practice of preparing hewn or hammered stone, wrought to a plain surface, suf- ciently straight and smooth to make a regular wall. The process as then practised by them, and those who were instructed by them, was understood to be extremely laborious, and of course expensive, as the expense depended wholly on the amount of labor required for preparing it. Without describing the process precisely, which I do not OF ARTS AND SCIENCES, 355 understand sufficiently to do, I understand the first thing to be done was, if the rock was in a quarry, to blast out a portion of it by gun- powder. By this process, fragments would come out in all sorts of irregular forms, as by mere chance. The business of the workman then was to take the pieces of more regular form, and reduce them to smaller and more regular shapes, as wanted for building. This is done by cutting a groove on a straight line with a hammer made with a cutting edge like that of a common axe, then striking it with a very heavy iron beetle on each side of the groove alternately, until it would crack,- generally in the line of such groove. This would sometimes split in a line nearly straight through, though it would often be irregu- lar. In this mode, by dividing and subdividing, the pieces were brought as nearly as practicable to the dimensions required ; and then all the irregularities of surface must be removed by hard hewing with very heavy instruments. In this state of the trade, although stone might be got out and dressed and made suitable for building, yet few buildings were erected, probably on account of the great expense. Some of our older inhabi- tants may perhaps recollect the stone house at what is now the corner of Tremont and Somerset Streets, long the hospitable mansion of Jere- miah Allen, Esq., a former Sheriff of SuiFolk, and celebrated for the number of good dinners given there. There was another granite house on School Street next below the Chapel, owned by John Lowell, Esq., who removed it and erected Barristers' Hall on the same site. But by far the most conspicuous dwelling was the Hancock House, still standing, built by Mr. Thomas Hancock. He was a native of Braintree, became a wealthy merchant, and probably chose to gratify his townsmen and himself by adopting, as the material for his sumptuous dwelling, one of these staples of his native town, without much regard to the cost. He was the uncle of John Hancock, and, dying without children, gave the house to him. Governor Hancock had been erect- ing a house for himself at the corner of Court and Tremont Streets, but having received from his uncle a gift of the Hancock House, about the time his own was ready for occupation, it is believed he never lived in the one he built. One other granite building of the same period, the most important of all, remains to be referred to, — the " King's Chapel." This was com- menced in 1752 and finished about 1755 or 1756. It was built entirely 356 PROCEEDINGS OF THE AMERICAN ACADEMY of hammered stone obtained from the North Common in Braintree, cor- responding nearly if not exactly with the present granite quarries in Quincy. It was designed as an Episcopal Chui'ch for the accommo- dation of the king's officers, of the Provincial government, revenue officers, and Provincial gentry ; and was intended, in its sumptuous character, to be as near an approximation as possible to an English church, and was very properly denominated the " King's Chapel." When this work was finished, it was the wonder of the country round. People coming from a distance made it an object to see and admire this great structure. The wonder was that stone enough could be found in the vicinity of Boston fit for the hammer to construct such an entii"e building. But it seemed to be universally conceded, that enough more like it could not be found to build such another. The stone-trade and stone-quarrying remained nearly in the same condition, it is believed, until about the end of the last century. Soon after that time, an extraordinary change took place; buildings of wrought granite, both the light-colored granite of Chelmsford and Tyngsboro' and the dark granite of Quincy, were used in erecting private and public buildings ; a new spring was given to the busi- ness of getting out stone, which has continued to the present time. During the first few years of the present century, many new private buildings were erected; in 1810 or 1811 the Court-IIouse in School Street was built, after a plan by Mr. Bulfinch ; in 1814, the church on Church Green, Summer Street, was completed, and many others fol- lowed in regular succession up to the present time ; and now the city seems rapidly filling with structures of granite of the most sumptuous character. It becomes a most interesting inquiry to what this great change can be attributed. To call the attention of the public to this point, is the sole purpose of this communication. I have always understood that the change was caused by the art of splitting granite with small wedges, which was unknown here till about the time in question. This art, apparently not difficult, or requiring any great skill, was yet of so great importance as to facilitate the working of granite, and reduce the cost to such a degree, as to render it a comparatively cheap building material, regard being had to its strength, durability, and beauty. The process, now so familiar, is a simple one, requiring no compli- OF ARTS AND SCIENCES. 357 cated apparatus, and no unusual skill or force when once known. But if, as it is supposed, it has produced these great changes, fur- nished the community with a most excellent building material at a cheap rate, and has filled our city with the permanent and sumptuous structures which are everywhere rising to constitute one of its chief ornaments, it seems an object of laudable curiosity to ascertain its origin and introduction, to learn who invented or first practised it, or whether it was in use elsewhere, and brought here, and by whom. This brings me to my main purpose, a statement given by the late Governor Robbins of Milton, as to the origin of the art of splitting stone. I give it with all the names and particulars, in order that the statement may be verified, or refuted, by showing another and a differ- ent origin of the introduction of this art, or by showing some other mode in which it was invented, or brought here from elsewhere. Prior to 1798, Castle Island in Boston Harbor, now Fort Indepen- dence, was the prison of the State, where convicts were sent to be punished by confinement and hard labor. About that time, the United States, in anticipation of hostilities with the French, were desirous of having possession of Castle Island, in order to erect thereon a strong fortification for the defence of Boston, and for that purpose urged on the Commonwealth the necessity of having immediate possession of the island. The Commonwealth acceded, and caused the prisoners to be removed, although the State prison at Charlestown was not built or ready for their reception, nor was it so for some time after. This fixes the time when the State prison was in the process of building. Governor Robbins of Milton was one of the first Commissioners, and in this capacity put himself into communication with all the workers and dealers in stone, and found their prices very uniform, though, as he thought, very high. The narrative I am about to state he made to me some twenty years after. I was then one of the agents for the public, in erecting a stone building for the county, and probably that was the occasion of my interview with him. It was this : — Desirous of getting the stone for the prison on the best terms, and believing the prices high, though general, he thought much and con- versed much on the subject. In that state of mind, and deeply inter- ested in the subject of stone, he had occasion to pass through Salem in a chaise. In passing along a street, he noticed a building ap- 358 PROCEEDINGS OF THE AMERICAN ACADEMY parently new, the basement story of which was of stone. He stopped to look at it carefully. In doing so, he perceived along the margin of each stone the marks of a tool at distances of six or seven inches apart. This was something new. He had never seen it on hewn stone. He immediately inquired for the owner, and saw him, and asked if he knew how and by what process those stones were got out and Avrought. He said he did not, but referred him to the contractor, who did most of that species of work in Salem, by the name of Galusha. As I took the name by the sound only, the orthography may be differ- ent, Galoucia or Galooshy. He then proceeded to find Mr. Galusha, and to ask him whether he got out those stones, and by what process. He said he did not get them out himself; that they were obtained in Danvers, two or three miles distant, and were furnished him by a man named Tarbox. Upon asking for directions to find Mr. Tarbox, Gov- ernor Robbins was told that he was a very poor man, being in an ob- scure situation in Danvers, near the place where the stone was quarried. Governor Robbins, determined to pursue the inquiry, immediately proceeded to Danvers, and, after considerable inquiry, he found Mr. Tarbox, in a small house, with a family, and with every appearance of poverty about him. After some little preliminary conversation, he asked Mr. Tarbox if he got out the stone in question, and if so his method. He told him he had, and immediately proceeded to explain the process, and showed him his tools, his mode of drilling the holes, and inserting and driving the small wedges as above described. Governor Robbins was at once struck with the idea that it was new and peculiar, and might be a very important invention. Governor Robbins did not say that he asked whether it was an invention of his own, or whether he had learned it of anybody else. But as it was new to himself, I think he was impressed witli the belief that it was the invention of Tarbox. He seemed, however, not to feel that he had any exclusive or peculiar interest in the use of this art. Governor Robbins then asked him if he would consent to go up to Quincy and work two or thi'ee months and split stone in his mode, so that other workmen might practise it. He said it was impossible for him to leave home ; that his family were dependent on him for their daily bi'ead, and that he had no clothes suitable to go from home. Governor Robbins obviated all his objections by making provision for the family during his absence, also engaged to give him two or three times the OF ARTS AND SCIENCES. 359 monthly wages usually paid the best stone-cutters, and the man con- sented. Having made the necessary arrangements, he took him to a clothing-store in Salem, obtained him a suitable outfit, then took him into his chaise and brought him to Quincy. Governor Robbins added, that he introduced Mr. Tarbox to several of the principal stone-dealers, and that it was not three months before every stone-cutter in Quincy could split stone with small wedges as well as Mr. Tarbox. Also that this improvement in the working of granite had in a veiy short time the effect to reduce the price to five eighths of its former cost ; that is, that the cost of the dimension stone wanted for the prison, which had before been $ 4.00, was afterwards reduced to $ 2.50, and other granite work in similar proportion. I have been thus particular in naming persons and stating circum- stances, in the hope that some persons still live, either at Salem or Quincy, who can throw light on the subject. It would be very extra- ordinary if an art of so much importance should be traced to a source so obscure as poor Mr. Tarbox, who seems to have been hardly con- scious that he was doing anything extraordinary. It may be that this whole narrative rests on some mistake, and that a different origin for this art of working granite may be shown ; if so, it is very desirable that it should be made known to the public. Four liuudred and scventy-fouvtli meeting. January 10, 1860. — Monthly Meeting. The President in the chair. The correspondence of the Academy, since the preceding meeting, was read by the Corresponding Secretary. Professor Agassiz gave a sketch of the plan upon which he is arranging the Museum of Comparative Zoology at Cam- bridge ; viz. in separate faunae, with also an assorted typical collection to illustrate the general systematic arrangement. Dr. C. T. Jackson exhibited a specimen of meteorite con- taining olivine or chrysolites, like the celebrated Siberian meteorite of Pallas. The specimen was detached from a large mass, at least five feet in diameter, recently discovered upon the summit of a mountain in Oregon, in the vicinity of Rogue River. Dr. Jackson also exhibited specimens of some other North American meteorites. 360 PROCEEDINGS OF THE AMERICAN ACADEMY Professor Horsford directed attention to instances of spon- taneous combustion of saw-dust, used to catch the dripping of oil from machinery. Professor Jeffries Wyman read a paper on the anatomy, and especially the muscular system, of Troglodytes Gorilla. Mr. Folsom exhibited a specimen of the smallest ancient gold coin known. It bears the head of Jupiter Ammon, and is of an age anterior to B. C. 500. The only other specimen known is in the British Museum. Professor Agassiz presented his views of the tertiary de- posits, as consisting, in each of its three great divisions, of a greater number of successive deposits, and these of a much more distinct character, than is generally thought. He ex- pressed his conviction, not only that the tertiary shells which have been regarded as identical with existing species are specifically different, but also that in some cases shells of successive beds of the same formation, which have been taken for the same, really belong to two, three, or more species. A discussion respecting the evidences of synchronism be- tween distant deposits of the same epoch ensued between Professor W. B. Rogers and Professor Agassiz. Professor W. B. Rogers exhibited a stereoscopic slide, which, by a simple contrivance, enabled the observer to rotate two equal slips of ivory on a black ground in such manner as to give them any desired inclination to one another, thereby causing the resultant visual figure to assume various perspective attitudes in the vertical plane, and, by alternate convergence or divergence of the slips, giving it a vibrating motion in that plane. This arrangement he offered as the simplest experimental means of illustrating the principle of visual relief, as produced by combining the twin pictures of a stereoscope. He made some remarks in continuation of former observations in regard to the theory of vision by the successive combination of corresponding points, as maintained by Sir David Brewster, and described a further experiment which he regarded as wholly incompatible with that theory. OF ARTS AND SCIENCES. 861 The immediate purpose of the experiment is to present to the two eyes the respective component pictures, not simiil- taneously, as in the usual mode of binocular combination, but in succession or rapid alternation. This is done most simply by placing one of the common twin drawings, as of a crystal or other solid traced by white lines on a black ground, at a distance of about twice the limit of distinct vision, and, by a proper arrangement, moving backward and forward over the face of the drawing a slip of black pasteboard, so as alternately to cover and expose first one and then the other picture, tak- ing care that no part of one shall be in view while the other is wholly or in part revealed. If, while the moving screen is briskly vibrated, the optical axes be converged to an interme- diate point, as in the combination of twin pictures by what has been falsely termed the squinting process, the observer will see the resultant picture in the same position, and with as com- plete relief, as if both pictures were permanently uncovered. As might be expected, the same effect is obtained with pic- tures viewed in the stereoscope ; and in this case the experi- ment is most readily made with transparent slides and an opaque screen, caused to vibrate or to revolve near the surface of the slide on which the light is received. As in these ob- servations the corresponding points of the twin drawings can never be seen at the same time, it is inconceivable that any adjustments of the optic axes can be made to unite them pair by pair, as is claimed by the theory of Brewster. The resul- tant binocular perception is here due to a present picture in the one eye, combined with the picture previously made in the other, and which, by the well-known law of visual sensibility, continues its impression for a short time after the occlusion of the light. But this latter, having been impressed on par- ticular parts of the retina, cannot be shifted to other parts point by point, as would be necessary to efifect the combina- tion with the corresponding actual ray-impressions on the other eye. This experiment, therefore, confirms the conclu- sion drawn by Professor Rogers at a former meeting from VOL. IV. 46 362 PROCEEDINGS OF THE AMERICAN ACADEMY observations on the binocular combination of visual spectra, and offers, he thinks, a conclusive argument against the the- ory maintained by Brewster, and which has been so widely accepted. Four hundred and seventy-fifth meeting. January 25. 1860. — Stated Meeting. The President in the chair. The Corresponding Secretary read a letter from Profes- sor George C. Swallow, in acknowledgment of his election as an Associate Fellow of the Academy. Mr. Chauncey Wright and Mr. Simon Newcomb, of the Nautical Almanac Office, Cambridge, were elected Fellows in Class I. Section 1, Mathematics. Professor Agassiz, followed by Professors Parsons, W. B. Rogers, and others, discussed several points in natural history and geology in reference to their bearing upon the origin and distribution of species. Professor Gray communicated, from the author, the fol- lowing : — Characters of some New Grasses collected at Hong Kong- and Vicinity by Mr. Charles Wright in the North Pacific Explor- ing Expedition. By Colonel William Munro, C. B., &c., of the British Armv. 1. Berghausia mutica (sp. nov.) : racemo decomposito ; pedicellis apice barbatis ; spiculis muticis scahro-puheris ; foliis linearibus utrin- que attenuatis margine pilis longis fimbriatis, vaginis glabriuscuHs apice longe fimbriatis. — An Miquelia harhata, Nees in Rel. Mejen. ? A Berghausia patida differt floribus majoribus, ai-ista nulla, pedicellis etc. multo longioribus et dissitis. Hong Kong. 2. Berghausia patula (sp. nov.) : racemo decomposito ; pedicellis apice barbatis ; spiculis hirsutis seta simplici basi non torta aristatis ; foliis lineari-lanceolatis utrinque attenuatis. — Gluma valde varians. — OF ARTS AND SCIENCES. 363 Csetera species, omnes Tndiese, sunt B. Courtallensis, Arn., et B. scopa- ria, poIypogo)wides, et adscendens, Munro. Hong Kong. 3. Aristida (ChuEtaria) Chinensis (sp. nov.) : panicula 10- 12-pollicari patula exserta, radiis solitariis geminisve usque ad basin bipartitis 1 - 6-uncialibus nutantibus ad axillas barbatis supra bis di- chotomis quandoque axillulis barbatis ; ligula ciliata. — Glumse inae- quales, inferiori acuminata 5 lin. superiori sub 3 lin. longa. Flosculus apice non torto nee articulate. Whampoa and Cum-sing-moon. 4. Apocopis Wrightii (sp. nov.) : spica bifida ; spiculsE inferi- oris sessilis gluma externa 8-nervi truncata obtusissima basi flava apice rubro-marginata fimbriata, nervis apice obsoletis ; flosculis hermaphro- ditis omnibus nisi intima aristatis, arista 9-liueali ; paleis fl. inf. masc. glumas superantibus. — Aff. A. Royleance. Cum-sing-moon. 5. IsCHiEMUM LEERSIOIDES (sp. nov.) : hirsuta ; culmo gracili; foliis anguste linearibus ; spica simplici unilaterali curvata ; gluma spiculae sessilis inferiori oblonga pectinata {nee alatd) apice obtusiuscula ; spi- culis pedicellatis tabescentibus. — Aff. I. pectinato. Whampoa, Lemma Island, and Hong-Kong. 6. IsCH^MUM OPHiouROiDES (sp. nov.) : spica simplici semicylin- drica ; gluma spiculae sessilis quadrato-oblonga scariosa alata retusa margine exteriore ciliis perpaucis abscouditis pectinato ; spiculis pedi- cellatis tabescentibus ; foliis planis brevibus obtusis basi contractis et ciliatis. Whampoa. Professor Gray read a paper, entitled, A Revision of the Genus Forestiera. By Asa Gray. FORESTIERA, Poir., Genus Oleacearum. Adelia, Michx., non P. Browne. Borya, Willd., non Labill. Bigelowia, Smith, non aliorum. Piptolepis, Benth. * Folia membranacea, nunquam porulosa vel punctata. 1. F. ACUMINATA (Poir.) : glabra ; foliis ovato-lanceolatis ovatisve utrinque acuminatis longiuscule petiolatis serrulatis vel subintegerri- 364 PKOCEEDINGS OF THE AMERICAN ACADEMY mis ; drupa oblonga vel fusiformi saspius acuminata. — Adelia acu- minata, Michx., Fl. 2, p. 225, t. 48. Forestiera ligustrina, Gray, Man. Bot., ed. 2, p. 358, non Poir. — Wet, shady grounds along streams, Georgia to Illinois, Missouri, and Texas. Var. /3. PARViFOLiA : foliis subpollicaribus, primordialibus sub- spathulatis obtusis, sequentibus pi. m. acumiuatis ; drupa breviter oblonga plerumque obtusa. — New Mexico ; near Santa Fe, Fendler, no. 547. Below El Paso, Wright, no. 1699. Semeleuque Springs, Dr. Bigelow, in Mex. Bound. Coll. Dr. Torrey, in the Botany of the Mexican Boundary Survey, has passed over specimens of this variety as belonging to F. ligustrina. Fendler's specimens clearly show it to be a form of F. acuminata, the fruit of which varies exceedingly in shape. 2. F. LiGUSTPtiNA (Poir.) : molliter pi. m. pubescens ; foliis obovatis ovalibus seu obovato-oblongis obtusis serrulatis (pollicaribus et ultra) basi in petiolum brevem angustatis ; drupa ovoidea. Var. a. fohis adultis glabratis vel glabellis ; drupis subsessilibus. — Rocky banks, Florida to Georgia and Tennessee. Var. /3. PUBESCENS : foliis etiam adultis molliter pubescentibus ; drupis pedicellatis. — F. pubescens, Nutt. in Trans. Amer. Phil. Soc. n. ser. 5, p. 177. Florida, Arkansas, Texas, New Mexico, Chihuahua. (Coll. Lindheimer, no. 700, &c.) In the Botany of the Mexican Boundary Survey, Dr. Torrey has doubtless correctly reduced Nuttall's F. pubescens to F. ligustrina ; but the difference in the length of the fruiting pedicels, unnoticed by him, is worthy of remark. One or two mistakes of Richard, in Michaux's Flora, have led to confusion in respect to F. ligustrina and F. acuminata, and to a mis- take in my Manual of Botany, which it is one object of this notice to correct. Richard characterizes Adelia ligustrina as with " foliis integerrimis," A. acuminata with " foliis levissime serratis " ; whereas in fact the leaves of the former are always serrulate ; but those of the latter are sometimes entire, as indeed they are repi'esented in the figure, which figure, with the character, identifies the species com- pletely. Moreover, A. acuminata is said to inliabit Carolina and Georgia, which is true, as to the latter State ; A. ligustrina, Illinois and Tennessee, which is not the case, at least as to Illinois. In the Manual, following the indication of this habitat, I called our only OF ARTS AND SCIENCES. 365 Northwestern species F. ligustrina ; but it is certainly F. acuminata. I suppose that the habitats of the two species are transposed in Michaux's herbarium and Flora, * * Folia coriacea impunctata. 3. F. SPH^ROCARPA (Torr. Bot. Mex. Bound. Surv. p. 168): tomentoso-puberula ; foliis parvis (semipollicaribus) oblongis vel ellip- ticis obsolete crenulatis coriaceis subpetiolatis ; drupa globosa pedicello subsequilonga. — Dry ravines of the Rio Limpio, Dr. Bigelow. * * * Folia coriacea, adulta subtus porulosa-punctata. 4. F. RETICULATA (Torr. 1. c.) : glabra ; foliis ovatis seu ovato- oblongis SEepe acuminatis (1 - 2-pollicaribus) serrulatis utrinque reti- culato-venosis supra nitidis basi obtusis vel rotundatis ; drupa ovali- globosa breviter pedicellata. — W. Tex^s, along the Limpio, Pecos, &c., Wright, no. 627, 565, Bigelow, Schott. 5. F. PORULOSA (Poir.) : glabra; foliis oblongo-lanceolatis seu anguste oblongis plerumque obtusis integerrimis (1 - 2-pollic.) basi subpetiolatis, venulis baud conspicuis ; drupa ovoideo-oblonga pedi- cellata. — Myrica segregata, Jacq. Ic. Par. 3, t. 625. Adelia porulosa, Michx., Fl. 2, p. 224. Borya porulosa, Willd. Spec. 4, p. 711. Forestiera porulosa, Poir. Diet. Suppl. 2, p. 664. F. Jacqui- niana, Didrichson in Ind. Sem. Hort. Haun. 1838, ex Zdnncea, 27, p, 737. — West Indies ? Jacquin. Coast of Florida, Michaux, Dr. Leitner. Eastern part of Cuba, Wright, no. 411. Var. /3. PHILLYREOIDES : foliis ovato-oblongis parvulis (subpollic.) subtus tomento laxo pubescentibus ; floribus nonnullis (ut in sp. fere omnibus) hermaphroditis. — Piptolepis phillyreoides, Benth. PL Hartw., p. 29. Forestiera phillyreoides, Torr. in Bot. Mex. Bound. Surv., p. 167. Guanaxuato, Mexico, Hartweg, no. 259. Var. y. ? ANGUSTIFOLIA : foliis glabris lineari-spathulatis oblongo- linearibus lanceolatis vel anguste linearibus obtusissimis plerumque aveniis. — F. angustifolia & F. phillyreoides, var. spathula^folia, Torr. I. c. — Lower parts of Texas and Northern Mexico ; common. Coll. Berlandier, no. 3024. Lindheimer, no. . Wright, no. 566. Jacquin's figure, so long overlooked, but recently brought to notice by Didrichson, exactly represents the West Indian plant, as it occurs in Wright's collection (flowering specimens in coll. 1856-57, and fine fruiting ones in coll. 1859 - 60) ; and these accord pretty well with a 366 PROCEEDINGS OF THE AMERICAN ACADEMY fragment of the Florida species in Dr. Torrey's herbarium, collected by the late Dr. Leitner. To the same species may safely be referred Bentham's Piptolepis phiUyreoides, and probably Torrey's F. angiisti- folia, although this is more doubtful, as completely intermediate forms have not been met with. Piptolepis, as Dr. Torrey remarks, is iden- tical with Forestiera, most, if not all, of the species producing some hermaphrodite blossoms. Four hundred and seventy-sixtli meeting. February 14, 1860. — Monthly Meeting. The President in the chair. The Corresponding Secretary read letters from Messrs. Chauncey Wright and Simon Newcomb, of Cambridge, in acknowledgment of the notification of their election as Fel- lows. Also various letters relative to the exchanges of the Academy. The Hon. Josiah Quincy addressed the Academy upon the subject of a memorial before the State Legislature, in behalf of the Boston Society of Natural History, and other societies, associated in the petition for a grant of land for practical sci- entific purposes. The subject of the memorial was also ad- vocated by Professor Rogers and Mr. Emerson ; and Messrs. Parsons, Loring, and Charles Jackson were appointed a com- mittee to further the memorial before the Legislature. Mr. Treadwell read a communication On the Strength of Cast-iron Pillars. The great calamity which recently fell upon Lawrence having called the attention of the public to the subject of cast-iron columns or pillars, which are now so generally used in all our structures, I have thought that a few words upon this subject may not be without interest to the Academy. It may hajjpen, moreover, that after considering the state of knowledge upon the subject, and the glaring discrepancies and con- tradictions contained in the practical rules and tables in common use by builders, the Academy may see fit to adopt some action tending to a revision of these guiding rules. OF ARTS AND SCIENCES. 867 "We have no record of any experiments to determine the power of iron to resist a force applied, in any of the four or five ways in which it may be applied, to break it, until about a hundred years ago, al- though such experiments might have been made and kept as secrets, or passed as traditions in the trade. About a hundred years ago, Musschenbroek made numerous experiments upon the direct tensile or cohesive strength of both wrought and cast iron ; and, although the experiments were numerous, the results obtained gave much more strength to iron than later experimenters have been able to obtain. But neither Musschenbroek, nor, as far as I have found, any other experimenter, attempted to determine the power of cast-iron to resist a compressing force, like that to which columns are subjected, until near the commencement of the present century. As early as the year 1757, however, Euler published a paper in the Berlin Memoirs, which seems to be a sequel to some previous work of his upon the subject that I have not seen. This paper consists of an elaborate geomet- rical investigation of the comparative strength of columns of the same materials, but of different diameters and lengths, without, however, determining the absolute strength of any one material, or any one size of column, as this indeed could be done only by experiment. No proper and useful practical rules, applicable to cast-iron or stone, could therefore be drawn from the conclusions arrived at. But the theoreti- cal conclusions of Euler deserve to be noticed, both on account of the great mathematical power of the man, and the somewhat near con- formity which his formula bears to the truth, as derived from the latest and best experiments. Euler's results may be summed up in a very few words. They were these : — With columns of the same material and of equal diameters, but of different lengths, the strength must be inversely as the squares of the lengths. If the lengths be equal and the diameters unequal, the strength must be as the fourth powers of the diameters directly. Thus, let A and B be two columns of equal diameters, B being twice as tall as A. A will bear four times the load carried by B. And if C and D be two columns of equal height, D being twice the diameter of C, then D will bear sixteen times the load borne by C, or, in general, P = — . Here the application of science to columns, or at least to cast-iron columns, rested, until some time near the commencement of the present 368 PROCEEDINGS OF THE AMERICAN ACADEMY century, before which time, indeed, none were used in this country. Younger men than I can well remember when there was not a cast-iron pillar bearing up a single wall or floor in Boston, though they now constitute the principal support of enormous piles scattered through every street. In England the use of cast-iron commenced somewhat earlier than in this country, as the material was there much cheaper, and the art of founding it practised more perfectly. In both countries, however, it was used with much caution. The engineers best acquainted with it knew its uncertain, not to say treacherous character. They proceeded, therefore, with great caution, taking care to make a great allowance for defective workmanship, and the dis- turbing influences of change of temperature, movements in foundation walls by the yielding or freezing of the earth, vibrations from moving loads, and the motion of machines, and other influences. By this cautious mode of proceeding they kept within the limits of safety, though sometimes, no doubt, with a prodigal use of iron. It seems that in the year 1795, Mr. Reynolds, a well-known engineer, made two or three experiments upon the powers of bars, one inch square and three feet long, to sustain weights pressing upon them endwise. But these experiments are not related with sufficient detail to have furnished any useful conclusions. In the year 1818, Mr. George Rennie published in the Philosophi- cal Transactions an account of his experiments on the power of cast- iron to resist a crushing force. These experiments were confined to small specimens in the form of cubes and prisms. The largest cubes, having sides of one fourth of an inch, being crushed by 12,6G6 pounds, and the largest prisms, of one fourth of an inch base by one inch in height, being crushed by 6,440 pounds. Experiments like these would form a very insecure foundation for any rule to determine the strength of long columns, however, because such columns are not destroyed by being really crushed, but by being crippled by the compressing force, bending sidewise and breaking transversely. About two years after the publication of Mr. Rennie's paper, Mr. Tredgold, a man who attained, and that deservedly, a high reputation as a writer upon engineering, endeavored to find from the very scanty materials then existing, by geometrical methods, the absolute strength of cast-iron pillars of all sizes ; and to give rules to be used by prac- tical builders, that should be trustworthy for their guidance. Mr. J OF ARTS AND SCIENCES. 369 Tredgold devised a formula, from which tables have been calculated that have gone into general use, and are now in the hand-books used by builders. I have here one of these hand-books, published by "VYeale of London in 1859, and of which these tables form a part. I shall return to them presently. The next important step in these investigations, taking the order of time, was made by Mr. Hodgkinson, about the year 1836. Mr. Hodg- kinson was even then most advantageously known for his experiments upon iron in the form of girders, or when exposed to cross-frac- ture. His experiments upon columns or pillars were very numerous, amounting to near three hundred, and were admirably contrived ; and on reading his clear account of them, one only regrets that they were not extended to greater instances, and not confined, as they were, to loads of less than twenty-five tons, although, indeed, this is a greater weight than had ever been used before for experiment. In the account of these experiments, we have the weights required to destroy solid pillars of from 60 inches in length down to 7^ inches, having their diameters from half an inch up to two inches. To state a few of his results in a very general way. He found that pillars 60 inches long, half an inch in diameter, were broken by a weight of 143 pounds ; 30 inches long, half an inch in diameter, by 539 pounds ; 15 inches long, half an inch in diameter, by 1,904 pounds. These were the breaking weights when both ends of the pillars were rounded so as to bear only upon the centre of the pillar. Now these numbers are to each other as 1, S^, and 134. The squares of the lengths, if taken inversely, would be 1, 4, and 16. These ratios were maintained as well when the ends of the pillars were flat, as when they were rounded ; but when flat, so as to bear upon every part of the end, the actual power of the pillar to sustain pressure was increased about threefold. Again, with pillars of the same length, viz. 60 inches, but of different diameters, he found, that those with a diameter of half an inch broke with a weight of 143 pounds ; those with a diameter of one inch, with 1,902 pounds ; those with a diameter of two inches, with 24,291 pounds. These numbers are to each other as 1, 13^, and 170, while the cubes of the diameters are to each other as 1, 8, and 64; the fourth powers or squares of the squares are as 1, 16, and 256. The ratio, therefore, is much above that of the cubes of the diameters, and below VOL. IV. 47 370 PROCEEDINGS OF THE AMERICAN ACADEMY that which Euler had assigned, namely, the squares of the squares or fourth powers. Mr. Ilodgkinson endeavored, by a careful and minute analysis, to obtain fractional exponents that should express, in a single formula, the relations of strength, for both difference of height and diameter, with more exactness than any hitherto proposed ; and he arrived, after ex- amining many other powers, at the formula ^, d being the diameter, I the length, as giving the relation of strength for cast-iron pillars of different sizes ; and this may be taken with perfect confidence as giving the utmost strength within the limits to which experiment has been carried. The above formula merely determines the comparative strength of pillars of different sizes and proportions. To obtain the actual sti-ength of any pillar, Mr. Hodgkinson, finding the diameter d, in inches, and the length, I, in feet, and taking, for pillars with round ends, 14.9 for a coefficient, gives 14.9 -^ =. W, the weight in tons that the pillar will just break under; and changing the coefficient 14.9 to 44.7, he obtains the weight that will break pillars with square or flat ends. These coefficients were obtained by him as a mean, from a careful comparison of all his experiments, and appear to be, as I have before said of his exponents, sufficiently near the truth to be relied upon for all iron of good quality. At the same time, I think we ought always to be aware of the caution given by Biot, and " trust no such formula much beyond the light of experiment." "While Hodg- kinson thus gives a much more exact formula than that of Euler for cast-iron pillars, he retains that of Euler for wooden columns, as pref- erable to his own. Besides this course of experiments upon solid pillars, he made a very good series upon those formed hollow. These ranged through diameters from 1| inches up to 3| inches, the thickness varying from .28 to .33 inch ; the same length, namely, 7-J- feet, being taken in all cases. The greatest breaking weight used was 50,477 pounds. These experiments seem to have been as well contrived and executed as those upon solid pillars ; and while they show with more exactness than had before been given the vast increase of strength obtained from a given quantity of iron by casting it in the hollow, rather than in the solid form, they did not reach up to sizes large enough to determine beyond a doubt, from this law of increase, a rule which may be per- OF ARTS AND SCIENCES. 371 fectly relied upon for hollow pillars of very large size, with very thin walls. He found that his formula, as applied to solid pillars, was applicable to those of a hollow form, by merely changing (p-^ into (p-^ — gs.e^ -j^ which d and e are the external and internal diameters, respectively. Mr. Hodgkinson likewise extended his experiments to some other materials than cast-iron, as wood, wrought-iron, and cast-steel. Taken altogether, these researches are undoubtedly the most val- uable that have been made upon the subject. But after all, Mr. Hodgkinson's paper must be considered in the light he intended it for ; namely, as a scientific investigation of the strength of pillars, and not a practical treatise, giving to architects and builders rules that they may follow with confidence in their erections. As the matter now stands, each architect or engineer who would follow this paper must, after finding the limit of strength for any proposed column, determine for himself how far he will keep within this limit, or where safety ends and danger begins. To show how far it is required in practice to carry the strength beyond that assigned by inferences founded upon calculation, to obtain security against all disturbances, and the imper- fections of workmanship, I will cite an example or two. A water- pipe 12 inches in diameteiV, and half an inch thick, ought, from deduc- tions made from the tensile strength of cast-ii-on, to sustain a column of water more than 3,000 feet high. But where is the engineer that would dare to load a series of such pipes with a column of 300 feet high ? Again, a steam-boiler 30 inches in diameter and ^ of an inch thick, ought to hold steam of more than 1,000 pounds' elastic force. But in practice 60 pounds is considered enough for such a boiler. These instances should certainly, in the case of cast-iron pillars, teach us to keep widely within the ultimate, or what may be called the theo- retical strength. No practical directions have, as far as I know, been given in any engineering work founded upon Hodgkinson's experi- ments. The tables by which architects in Boston are governed are derived from the formula of Tredgold, to which I have before alluded. I will finish what I have to say, by comparing a few of the numbers of these tables with each other, and with the experiments and formula of Hodgkinson. I take from these tables a solid pillar 2 inches in diam- eter, 6 feet long. To this the load assigned is 61 cwt., while 2 inches' diameter 12 feet long is made to carry 32 cwt. ; numbers very nearly 872 PROCEEDINGS OF THE AMERICAN ACADEMY in the inverse ratio of the height. Hodgkinson gives for the ratio of these lengths 1 to 3^, and Euler 1 to 4. Again, I take from these tables a pillar 8 inches in diameter, 6 feet long, and the breaking weight is 1,315 cwt. 8 inches in diameter, 12 feet long, " " " 1,224 " Or, it loses only about 9 per cent by being of double height. While the ratios assigned, by Hodgkinson would be, as before, 1 to 3^, and by Euler 1 to 4. Again, how do these diameters compare, taking for the same lengths ? We have : 12 feet long, 2 inches in diameter, bearing ... 32 cwt. 1 2 feet long, 8 inches in diameter, bearing . . . 1,224 " Or about as 1 to 40. While the formula of Hodgkinson gives the I'atios to these diameters as 1 to 147, and Euler's formula 1 to 256. Next for a comparison of hollow pillars. Hodgkinson found that a hollow pillar 7^ feet long, 3.36 inches in external diameter, and .36 of an inch thick, being on round or hemispherical ends, bi'oke only under a load of 50,477 pounds, or 22^ tons. Now, we have in the tables no length under ten feet. Taking this height and the diameter at 3^ inches, with a thickness of half an inch, and to this is assigned a breaking weight of 3 tons 15 cwt., or 75 cwt. But according to Hodgkinson's formula, carried but a very little way from his actual example, such a pillar will sustain a weight of 18.9 tons or 379 cwt. with round ends, or 56.7 tons or 1,138 cwt. with flat ends. Again, to find from the tables a hollow column 10 feet long that will bear a weight of 18.9 tons, I find that it should be 8 inches in diameter and f inch thick, and to bear 56 tons it should be 11 inches in diameter and 1^ inches thick. We see, therefore, that whatever discrepancies and incongruities these tables may contain, they are all, most probably, within the limits of safety, though the longest and smallest solid pillars ai*e but just Avithin those limits ; while certainly the large and short ones are safe to a somewhat prodigal use of iron. But ought these incongruous rules to be followed ? Safety, absolute safety, against all ordinary, and some even extraordinary cii'cumstances, should first be provided for ; beyond that, weight of iron is almost waste of iron ; and it seems to me that it would be a good service to mark out where this line is, under differ- ent conditions, and to give rules for keeping safely within it, — rules OF ARTS AND SCIENCES. 373 that shall be consistent with the law of strength for small as well as for large columns. Whereupon a committee, consisting of Daniel Treadwell of Cambridge, J. B. Francis of Lowell, and J. B. Henck of Boston, was appointed to examine and report upon the whole subject. Professor G. P. Bond communicated the results of a series of photographic experiments, executed at his request by Mr. Whipple, upon the light of the Sun and Moon, compared with that of the planet Jupiter. The results tend to support the suggestion that the latter is a self- luminous body. Several analogies were pointed out. The physical constitution of the atmospheres of the Sun and Jupiter, the periods of the solar spots, and the phenomena attending the transits of the satel- lites of Jupiter, were referred to in the same connection. Professor Bond stated that a phosphorescent condition of the atmos- pheres of the larger planets might be anticipated as a consequence of Vaughan's theory of the source of solar heat and light, and that this consideratij^i had first suggested the experiments in question. His object, however, was not* at all to advocate the theory, but rather to present a variety of facts, all tending to show a remarkable analogy between the Sun and the largest planet of the system. Dr. Holmes proposed the term Reflex Vision to characterize the visual acts illustrated by the following experiments : — 1. Close one eye, leaving the other open. Hold a finger between the open eye and some small object, so as to conceal this object. Open the other eye, and the object will be seen as if through the finger. 2. Place the hand edgewise between the eyes, so that the eye last opened cannot see the finger. The object will still be seen as if through the finger. 3. Place a wafer on the back of a paper stereograph, so that it can be seen in the instrument by one eye only ; for instance, the left. An image of the wafer will be seen in the right side of the stereoscope, which cannot always be distinguished from the wafer itself, except by trying it with the finger, or in some similar way. The left image may be called direct, the right, secondary. 374 PROCEEDINGS OF THE AMERICAN ACADEMY 4. Trace a circle round the secondary image with a lead pencil. Fasten a wafer on the end of a narrow strip of card. Push this wafer into the circle just traced. The two wafers will coincide, and appear as one. Draw the wafer gradually away, and it will carry the second- ary image with it, leaving the circle blank. Continue drawing it away, and at a certain distance (about one diameter of the wafer, for in- stance) the secondary image will separate from the moving wafer, and sail very slowly back into the traced circle. 5. Close one eye and look at a window with the other. Now shut both eyes, and there will be a spectrum of the window in the eye which was opened, and in that only. 6. Repeat the experiment, keeping both eyes open, but in such a position that only one shall see the window. Close both eyes, and there will be a spectrum of the window in both eyes, most distinct, fre- quently, in the eye to which the window was not visible. These experiments appear to show that an image formed on one retina produces a retinal spectrum undistinguishable in many cases from a direct retinal image. That the seat of this secondary spectrum is the retina, is shown by the fact that the eye must be opened in order that it shall be perceived. The retina seems to require the -stimulus of light in order to repeat the impression. Again, in the sixth experi- ment, the spectrum in the eye which has not seen the object is like that in the eye which has seen it ; and this is always recognized as a retinal spectrum. If the conclusion from these experiments is correct, the transfer of impressions from one retina to the other falls into the great category of reflected nervous actions, and is properly called Rejlex Vision. The recognized connection of the retina by looped fibres, the decussation of the optic nerves, the connection of the optic ganglia, afford abundant anatomical confirmation of the probability of the suggestions offered. To state the general result of the experiments briefly : — If an object, A, is seen by one eye only, both being open, there will be a direct image, o, and a reflex image, a'. The retinal impressions will be represented by a -j- a'. If ^ is seen by both eyes, the retinal expression will he a a' -\- a a'. If A by one eye, and B by the other, a h' -\-b a'. The direct and reflex impressions exactly coincide in the normal state, except so far as ocular parallax makes a difference between OP ARTS AND SCIENCES. 375 them. This want of precise coincidence between the superimposed or coinciding direct and reflex images is associated with the idea of solidity, and is reproduced in stereoscopic pictures. Four liimdred and. seventy-seventh meeting. March 6, 1860. — Special Meeting. The President in the chair. Mr. E. S. Ritchie exhibited a series of experiments in Mag- neto-electricity. He gave a brief account of the several steps which had led to the invention of the RuhmkorfF apparatus, and spoke of the effect of the condenser first introduced by Fizeau, which at once converted the instrument into a pow- erful source of tensional electricity. After alluding to the increased energy which he had been able, by certain modifi- cations, to impart to the apparatus, he proceeded to show its effects by a variety of experiments, exhibiting the spark as transmitted through the air, the charging of the Leyden jar, the illumination of the Torricellian vacuum and of various gases and vapors when greatly rarefied, and the influence of the poles of a powerful magnet on these luminous discharges. In the course of these experiments he showed the eft'ect of a current of air upon the form of the spark as first observed by Du Moncel; the brilliant explosive spark of the Leyden jar in the outer helix, discovered by Grove ; the common and stratified discharges through a tall vacuum-tube contain- ing vapor of turpentine ; the same through a tube of uranium glass displaying the characteristic fluorescence ; the phenom- ena of Gassiot's cascade, with the purplish fluorescence of the outer glass and the green of the uranium goblet within ; the various-colored light and its stratifications in the rarefied gases of Geissler's Tubes ; the strong fluorescence of solu- tion of sulphate of quinine when illuminated by some of these lights ; the spectra furnished by others ; the attraction and repulsion of a magnetic pole on the luminous strata ; 376 PROCEEDINGS OF THE AMERICAN ACADEMY and De la Rive's experiment of the revolution of the lumi- nous streams in vacuo around the poles of a magnet. Professor W. B. Rogers called attention to the nature and extent of the improvements which Mr. Ritchie had made in the Ruhmkorff apparatus. In the construction used by Ruhmkorff and others, the outer helix is wound in strata or courses parallel to the axis of the coil, separated from one another by layers of insulating material. This brings into proximity parts of the circuit which are really remote from each other as measured along the course of the wire, and by the unequal tension of the electric wave at these points tends to produce discharges within the helix or around its ends. In instruments having a moderate length of wire, the insulation is sufficient to prevent such discharges ; but when the coil is made up of a great number of these superimposed courses, the enormous difference of tension between the outer and inner parts of the helix overcomes -the resistance of the insulating material, and either destroys the action of the instrument by an internal discharge, or wastes a great part of its energy by frequent sparks around the extremities. If to obviate these evils we increase the thickness of the insulating sheets, we augment in the same proportion the distance through which the primary coil exerts its inducing power upon the outer helix, and thereby in a still higher ratio impair the energy of the induced curre'nt. Thus constructed, therefore, it would appear that the power of the instrument is unavoid- ably restricted within moderate limits. It is but just to state, that Professor Poggendorff was the first to point out this defect in the Ruhmkorff apparatus, and to attempt its remedy by dividing the helix into short sections. But he made no further application of the principle than to construct instruments with eight short coils placed end to end, which, although somewhat more effective, were still, as he confessed, too much exposed to " the disturbing effects of internal sparks " to present a very decided advantage. Mr. Ritchie, abandoning the attempt to improve the apparatus on the old construction, determined on huilding up the helix from a series of thin strata or rings placed peipendicular to the axis. By this ar- rangement the distance between the points of a stratum increasing with or ARTS AND SCIENCES. 377 their difference of tension, the resistance is augmented in projoortion to the tendency to discharge, and thus each stratum is efFectually precluded from the production of sparks within itself. It only remains, therefore, to interpose a sufficient insulation between the successive strata to pre- vent discharges from one to the other, and the instrument becomes secure from the enfeebling or destructive losses incident to the old con- struction of the coil. Such was the theory of the impi-ovement ; and Mr. Ritchie soon devised a contrivance for winding the helix in planes perpendicular to the axis, carrying the wire alternately from the inner to the outer circumference, and from the outer to the inner, and at the same time securing perfect insulation within and between the strata. The new construction proved eminently successful, conferring on the coil a tension much greater than had hitherto been attained. By fur- ther improvements in details, Mr. Ritchie has continued to add to its power, so that now, while the best European coil cannot be relied on for a spark of more than five inches, Mr. Ritchie's first-class instrument projects its luminous flash across an interval of fifteen inches, and ex- hibits other electrical phenomena on a scale of corresponding magnitude and splendor. Among the subordinate improvements devised by Mr. Ritchie is a new construction of the breakpiece, in which a spring, bearing the pla- tinum plate and pressing it firmly against the " anvil," secures a closer contact than by the ordinary arrangement. The separation is made by the blow from a spring-hammer worked by a small ratchet-wheel. In this way the time of contact is sufficiently prolonged to allow the iron core to be fully magnetized and the electricity to be developed throughout the Avire, which, in a helix of thirty miles, must require an appreciable time. This advantage is of course lost in the automatic interrupter of De la Rive, where the armature is so instantly with- drawn as in a moment to break the current. In Mr? Ritchie's plan, moreover, the manipulation of the instrument is placed entirely under the control of the operator, so that by varying the intervals of interrup- tion he can vary the length and chai'acter of the spark, and by proper adjustment obtain the greatest length of spark of which the apparatus is capable. To prevent the discharge taking place through the primary coil or its core, Mr. Ritchie, as a substitute for the insulating tube, in- terposes a bell-glass closed at the top, and with its lower edge turned outward in a flange. He makes the secondary helix in one or several VOL. IV. 48 378 PROCEEDINGS OF THE AMERICAN ACADEMY portions, each wound upon a gutta-perclia bobbin, so that one or all can be lifted from around the glass bell, Avhich in like manner can be lifted from the primary. The secondary helix of his first-class apparatus contains about thirty miles of wire ; that of the apparatus giving a ten- inch spark contains eighteen miles. Another novel feature in the construction of the instrument, found by Mr. Ritchie materially to augment its power, is the extension of the primary helix and its core to some distance beyond the ends of the sec- ondary. In the smaller instruments he adopts the proportion of two to one, and in the larger, of about one and a half to one. Mr. Ritchie, moreover, separates the condenser into several portions, each connected with a screw upon the base of the instrument, enabling the operator to vary at will the amount of condensing surface, or to dispense with it entirely, and by these changes giving rise to many remarkable varieties in the phenomena. In addition to these peculiarities contributing to the superiority of the instrument, it should be mentioned that Mr. Ritchie uses a much finer wire in the secondary coil, and a much coarser in the primary, than have heretofore been employed. It should not be omitted in the comparison, that while the European ajiparatus requires for the full development of its action a large intensity-battery, his coil is excited by a few cells to the highest display of its power. Professor Rogers called attention to the peculiar characters of the spark of the induction coil when transmitted through the air at dif- ferent distances between the terminals. When the distance is short, as, for example, one or two inches in the instrument exhibited to the Academy, the spark has the peculiar twofold character first noticed by Du Moncel, and since minutely studied by him and Perrot and others ; that is to say, it is formed of a slender, brilliant thread, enveloped by a much wider and less luminous space of a somewhat ruddy, flame-like aspect. As the striking distance is increased, this surrounding glow becomes less conspicuous, in comparison with the brilliant thread of light, and at last, when the interval has been sufficiently extended, it nearly or wholly disappears, leaving the spark to consist of a slender, jagged, brilliant line. These two parts of the luminous discharge, which we may call the flame-sparh and the thread-sparlc, present remarkable differences of character, indicating very unlike states of tension in the currents or OF ARTS AND SCIENCES. 379 portioi'is of current to wliicli they are severally due. Thus the flame - spark possesses great heatmg power, while the thread-spark is almost destitute of it ; hence the facility with which paper and other combus- tibles are ignited, when placed in a short spark, and the entire failure of this effect when they are made to intercept a long one. The fact of the spreading out of the flame-spark under the impulse of a transverse blast of air, while the luminous thread experiences no change, would naturally suggest the comparatively sloiv motion of the former ; and accordingly Robinson of Armagh, by applying the test of "the revolving mirror, has proved that the velocity of the flame-spark is very much less than that of the thread-spark. Recently, Du Moncel and Perrot have made numerous experiments on the two kinds of sparks, and the latter, availing himself of the effect of a current of air on the flame-spark, has succeeded in separating the two so completely as to be able to mark more certainly their respective peculiarities. These observations have shown that the current belong- ing to the flame-spark is endowed with decided magnetic and chemical, as well as heating powers, while that of the other is as little efficient in these respects as that of common frictional electricity. In view of these various characteristics, we are entitled to conclude that the flame- spark is due to a current of low tension, like that of an ordinary voltaic arrangement, and the thread-spark to one of high tension, comparable to the discharge of an electrical machine. Whether these currents are to be regarded as simultaneous or alternating in their transit through the coil, remains to be determined. The very different character of the discharge through the air when the terminal wires are near each other, and when far apart, is no doubt dependent on the different degrees of resistance which the interposed air presents to the passage of the current. When the terminals are at a short distance asunder, the induced current, having comparatively small resistance to overcome, begins to pass across before its tension has been much exalted, and thus discharges itself continuously during a short time and at a low tension. But when the terminals are widely separated, the current is at first unable to make the transit, and has to accumulate a vei;y high tension at the terminals in order to overcome the greatly increased resistance ; "and when at length it forces a pas- sage, it does so, as might be expected, with a correspondingly greater velocity, and completes the discharge more nearly in an instant. Thus, 380 PROCEEDINGS OF THE AMERICAN ACADEMY in the former case it shows itself chiefly as the flame-spark, in the latter, as the thread-spark. The remarkable difference of tension according to the distance be- tween the terminals, or, in other words, to the length of the spark, is no doubt one, and perhaps the only, reason for the effects observed in attempting to charge a Leyden jar by the inductive machine. When we connect the outer coating of the jar with one of the terminals, and bring the knob quite near the other, we see the broad flame-sparks passing in quick succession ; but only a feeble charge is imparted, however we may prolong the experiment. When, however, the knob is held at a much greater distance from the terminal, a few of the long thread-sparks are sufficient to charge the surface strongly. The beautiful phenomena of electrical light in rarefied gases, as ex- hibited in the electrical egg and Gassiot's and Geissler's vacuum-tubes, affoi'd many interesting subjects of inquiry. As the color of the light is dependent on the specific nature of the gas, and as this is reduced to an extreme degree of rarefaction, we have a means in some cases of identifying such substances when their quantity is so minute as to defy all other means of detection. With tubes of slender bore, affording, as has been seen, a light of great intensity, we may obtain a brilliant pris- matic spectrum, which, as Pliicker has shown, is marked in each case by some characteristic peculiarity ; and with the same arrangement we are able to trace the chemical changes which the enclosed gas or vapor undergoes while subjected to the electrical action. Perhaps the most important observations in this connection are those recently made by Gassiot, whose ingenious application of the absorbent power of potassa has enabled him to approximate more nearly to an absolute vacuum than any previous experimenter. In a tube thus pre- pared, he has found that the gas may be so excessively rarefied as to be unable to transmit the current, at this stage ceasing to be luminous. We may therefore conclude that the old notion of a vacuum being a good conductor, which was founded on the electric illumination of the Torricellian space, is entirely erroneous, and that in all cases conduc- tion is dependent on the presence of some form of ponderable matter. Adverting to the new evidences which these and other recent ex- periments afforded of the electrical character of the Aurora, Professor Kogers called attention to the action of a magnet on the electric light, and more particularly to its power of arranging the illumination in me- OF ARTS AND SCIENCES. 381 ridional bands, and impressing upon them a movement of rotation, as exhibited in De la Eire's experiment; and mentioned the ingenious suo'o-estion of Grove, that the height of the aurora above the earth's surface might perhaps be inferred from a knowledge of the degree of rarefaction at which like luminous effects were obtained in the vacuum- tubes. In connection with the jiuorescent influence of the light of some of the tubes, he mentioned the fact, that, during the bx-illiant auroral displays of August and September last, he found that a solution of sulphate of quinine showed its characteristic fluorescence quite dis- tinctly when exposed during the height of the illumination. In regard to the straiified character of the discharge, as exhibited so strikingly in some of the experiments, Professor Eogers remarked that this phenomenon, supposed hitherto to belong exclusively to the cur- rent of the induction coil, has recently been produced by Gassiot with machine electricity, and with the continuous current of a vol- taic battery of very high tension. As to the conditions in which the stratification originates, physicists are as yet undecided. The grada- tion of the phenomenon in different stages of exhaustion does not seem to have been sufficiently considered, and would naturally suggest an hypothesis which may not be unworthy of attention. When the experiment is made, while the process of exhaustion is going on, the following stages in the effect may be observed: — 1. While the rarefaction is yet very incomplete, the tube is dark, and no current transmitted. 2. When the exhaustion has advanced to a certain point, the current passes and the tube becomes filled with a colored electrical light, which as yet shows no appearance of stratification. 3. At a still higher stage of rarefaction, the column of light begins to exhibit a multitude of extremely thin closely contiguous strata, discern- ible with a magnifier before they become apparent to the naked eye. 4. As the rarefaction is pushed still farther, these strata become larger and more distinct, with wider intervals of comparatively obscure space between them. 5. Approaching the extreme limit of exhaustion, a few waves occupy the whole extent of the tube, and finally the light ceases as the current fails to be transmitted. In view of these facts, may we not believe that, in every case where 382 PROCEEDINGS OF THE AMERICAN ACADEMY the current passes, it ts accompanied hy stratification, — in other words, by a molecular vibration, or the formation of waves rapidly propagated through the gas or vapor, — and that the increasing rarefaction allows a greater amplitude for the oscillations, and thus gives rise to longer and longer waves ? In referring to the actinism of the electric light, Professor Rogers described some experiments which, with the aid of Mr. Ritchie and the distinguished photograper, Mr. Black, he had lately made on the photographic energy of the different colored lights of the Geissler vacuum-tubes. These, he stated, were but preliminary to more ex- tensive observations on the subject, which he hoped, through the same kind aid, to be able to report on hereafter. The most striking results thus far noted are the following : — 1. The faint, bluish light surrounding the negative wire is superior in actinic power to the more brilliant glow of the opposite bulb of the apparatus. 2. The actinism of the rays emerging from the tube is greatly in- creased by passing them through a solution of sulphate of quinine, so as to impress them with the Jluorescent character. 3. The time required for a distinct photographic impression was greatly less than by the ordinary daylight. In the case of a narrow tube transmitting a bright purplish flash, a strong picture was made on the collodion plate in less than half a second. This corresponded to one turn of the ratchet-wheel, or twelve successive flashes of light passed through the tube. Allowing each flash to occupy tenfold the time of an electric spark, as measured by Wheatstone, we should have an aggregate of time during which the twelve flashes acted of less than TonWxrth of a second. A number of positive impressions on paper, printed from the original collodion surfaces, were exhibited as results of these preliminary experiments. On motion of Dr. C. T. Jackson, the thanks of the Acad- emy were voted to Mr. Ritchie for his interesting and brilliant exhibition. . OF ARTS AND SCIENCES. 383 FoiH* Iiiiudi'ed aud seveiity-ciglitU meeting. March 13, I860.— Monthly Meeting. The President in the chair. The Corresponding Secretary read letters relating to the exchanges of the Academy. He also presented from the author the following paper, viz. : — Observations on North American and some other Lichenes. By Edward Tuckerman, A. M. Leptogidm dacttlinum, Tuckerm. in litt. : tliallo subeffuso imbri- cato tenui fragili fusco-viridi, lobis minusculis adscendentibus rotundatis crenato-incisis margine dactylino-dentatis ; apotheciis (mediocribus) vix elevatis planis rufo-fuscis margine integerrimo albido demum disparente. Spora3 ellipsoideaj diam. duplo longiores. (^yl- Syn. Lich. p. 123.) "Rocks, Vermont, 3Ir. Frost. Nearest to small states of L. tre?neIloides, rom wbicli it appears to be quite distinct. Parhelia chlorochroa, Tuckerm. in litt. : thallo substellato- multifido decumbente coriaceo la3vi nudo flavo-virescente (stramineo) laciniis discretis laxe intricatis repetito-dichotomis marginibus recurvis (conniventibus) subtus fuscis (nigrescentibus) fibrillis nigris subpanno- sis ; apotheciis P. congruens, Herb. Floerk., non Ach. (Kamt- schatka, Titesius in herb. Floerk.) On the earth, in sterile spots, on the Upper Missouri, near Fort Clark, and near Cannon-ball River, Dr. F. V. Hayden. On sand, Inscription Rock (U. S. Pacif. R. R. Sur- vey), Dr. Bigelow, Herb. Torr. At the Black "Water of the Platte, and the head of the Platte, Rocky Mountains, Dr. H. Fngehnann. Near to P. conspersa, of which it might be taken for a state, differenced by its peculiar habitat ; but unmistakably related also to P. Oamtscha- dalis, Ach., which was founded on a specimen from Tilesius. Floerke appears to have been acquainted with the collections of the latter (as see Eschw. Bras. p. 202), but referred his specimen of the present Lichen to another species. The P. congruens, Ach. Lichenogr. p. 491, was founded on a specimen collected by Swartz, which the latter says (Lich. Amer. p. 5) inhabits trees in North America, and particularly New England. (" Licolit arbores Americte borealis. In Nova Anglia observata." Sw. 1. c.) "Whatever this species may prove to be, — and it is now quite unknown to Lichenists, — it is enough to say that the 384 PROCEEDINGS OF THE AMERICAN ACADEMY Lichen before us differs too much from the character of P. congniens, and the figure in Swartz's work, to be referred to it. Our plant has nothing of the look of a tree-lichen, and probably never inhabits trees ; and there is little i*eason to suppose that it occurs in New England. PHYSCIA, Njl. — This genus, as limited by Dr. Nylander, in- eludes, beside the sharply defined section of Parmelia, of the same name, of Fries, and the nearly akin group of Lichens represented by P. parietina {Physcia, Koerb. pr. p.), also the more receding, ever- niiform, subpendulous group {Evernice sp., Fr.) represented here as yet only by P. jiavicans. So far as this species is concerned, it appears far from diificult to connect it very closely with forms of P. chrysophthalma, and so with the genus. I propose here to review briefly all the North American Lichens known, referable to Physcia ; and especially to consider what is probably the true rank of a number of species described by authors from North American specimens. The genus, with us, falls into two great sections, separated by color, and also by the spores ; and between these two, P. euploca, from Tex- as, appears to stand by itself. The first of these sections is made up of P. parietina, and the Lichens related to it, distinguished by the more or less yellow color of the thallus, and the colorless spores, in which the contained fluid matter, or protoplasm, separates finally into two opposite roundish masses, or sporoblasts, connected often by a narrow isthmus (sporce pokiri-dyllastce, Koerb. Syst. Lich. Germ. p. 90). From this group, P. euploca differs in its glaucous-fuscescent coloration, and simply once-septate spores, which are still colorless. And the large remain- ing section {Physcia, Fr.) is well defined by the glaucous-cinerascent (or at length fuscescent) thallus, and once-septate fuscescent spores. § I. Species Jlavescentes sporis incolorihus p>olari-dyhlastis. 1. P. CHRYSOPHTHALMA (L.), DC, a. Parmelia chrysophthalma, Auct. ; Moug. & Nestl. Cr. Vog. n. 254 ; Tuckerm. Lich. Exs. n. 80. On trunks and branches of trees, especially near the coast ; and also rarely inland. North America, Jacquin (Collect. 1, p. 117, t. 4), 1786. Hoffmann (PL Lich. 2, p. 23, tab. 31, f. 1), 1794. Pennsylvania, Muhlenberg. New York, Torrey. New England to Annapolis, Mary- land ; and westward to Illinois, 3fr. Russell, and Minnesota, 3fr. Lap- ham. Thickets and bottoms of the Blanco, Texas, Mr. Wright. Var. /3. PUBEKA, Wallr. Flecht. 2, p. 333 ; Nyl. Enum. Gen. in Act. Cherb., V. p. lOG. Borrera pubera, Ach. Licheuogr. p. 502. On OF ARTS AND SCIENCES. 385 smaller brandies of trees, Texas, Mr. Wright. Monterey, California, Dr. Gregg. Delicately downy ; the smallest states with the habit of the species, but more slender : the larger ones scarcely distinguishable ■ from the next, which occurs pubescent according to Swartz (Wallr. 1. c.) and Fries (Lichenogr. p. 28). Apothecia sparingly radiate-ciliate, or oftener entire. Var. y. FLAViCANS, Wallr. 1. c. ; Eschw. Bras. p. 224. Parmelia dein Borrera, Ach. Physcia, DC. ; Nyl. Enum. Gen. 1. c. On trees. South Carolina, 3fr. Ravenel. Elongated, as the last, but smooth; pale yellow above ; the branches compressed at the axils, and often channelled : apothecia with a thin, not ciliate, but obsoletely crenulate thalhne margin, which at length disappeai-s, when the disk (as in other species) appears to possess a thin, more or less evident proper margin. iJouisiana, on trees, fertile, Dr. Hale. Wallroth (Naturgesch. der Flecht. 2, pp. 333-340) was perhaps the first to connect the above Lichens as forms of one species ; but his view embraces plants removed even generically from the present type, and others of doubtful relation to it. Eschweiler follows Wallroth as respects his own Brazilian spe- cimens, and also adopts the general view of the former. The rich col- lections of Mr. Wright, in Texas, where at least two of the forms occur, sufficiently show that the elongated Southern Lichens are inseparable from P. chrysophtliahna, except as varieties. Physcia exilis, Michx. Fl. Bor. Amer. 2, p. 327 {Borrera, Ach. ; Parm. chrysoplithalma, c, Fr. Lichenogr. p. 75 ; Physcia Jlavicans, var. exilis, Nyl. 1. c.) from trees in Carolina, (Bosc, Ilichaux,) appears to be a smallish, slender, pallescent condition of the present variety. I have Louisiana specimens (Dr. Hale) which entirely resemble a South American Lichen referred to P. exilis in Herb. Berol. — P. chrysophthalma is perhaps (as sug- gested by Schi\3rer, Spicil. p. 489, and by Eschweiler, 1. c.) only P. ^ki- rietina, ascendent, and at length elongated, analogous to the ascendent and elongated states of P. speciosa ; and further attention may well be given to this point on our sea-coast, where the typical forms of both species grow copiously, and often together. 2. P. PARiETiNA (L., Duf.), Nyl., a, Auct. ; Tuckerm. Synops. Lich. N. E. p. 30, & Lich. Exs. n. 79. On trunks and stones near the sea, and also, more rarely, inland, New England. Bristol, Illinois, Mr. Russell. Var. ^. POLTCARPA (Ehrh,), Fr. : microphyllina, suborbicularis, VOL. IV. 49 386 PROCEEDINGS OF THE AMERICAN ACADEMY flava ; lobis coraplicatis ; apotheciis majusculis aurantiacis confertissimis. Farm, parietina, f. Fr. Lichenogr. p. 73, & Lich. Suec. n. 106 ; Schaer. Spicil. p. 477 ; Koerb. S. L. Germ. p. 91. On trees. Arctic Amer- ica (the specimens intensely colored, and approaching S), Richardson (Hook, in Frankl. Narr. p. 760). New England, common on apple- trees, a conspicuous Lichen, -which has passed here for var. rutilans, but differs in no I'espect from Fries's specimen above cited, except greater size. Ohio, Lea. Lake Superior, Prof. Agassis. Wisconsin and Minnesota, 3fr, Lapham. New Mexico (intensely colored, like 5), Mr. Fendler. California (on Live Oak), Mr. Wright. The apothecia in this are sometimes fibrillose beneath, as in the next. Var. y. LYCHNEA, SchfEr. : microphyllina, suborbicularis, fulva, lobis planis laciniatis apice palmato-incisis crenatis margine adscendentibus pulverulentis granulosis ; apotheciis majusculis aurantiacis. On trees, Cambridge. On trees and stones, IjDSwich, Mr. Oahes. The specimens on stones are regularly orbicular, substellate, of the common pale-yellow color of a, and differing in the narrower, divided lobes, which consider- ably resemble those of var. ectanea, Ach., Schaer. (Zw. Exs. n. 57), to which our plant might perhaps well be referred, notwithstanding that the margins are more ascendent, and much more granulate ; but the latter passes into states which I cannot well distinguish from the present variety. This development is seen in the higher-colored tree-specimens, in which the erectish, densely-granulate margins of the pulvinate thal- lus give quite a crustaceous aspect to the Lichen, which resembles, often also in color, the \ax. fulva, Schter. Lich. Helv. n. 383, which is hardly other than a state of his var. lychnea, n. 549. A specimen from Ba- varia {Physcia controversa, Massal., Koerb. Pai'erg. L p. 38), which I owe to the kindness of Mr. Von Krempelhuber, is larger and better developed than my specimens of the Swiss Lichen ; but the American surpasses even that as a well-marked form of P. parietina. The spores of our plant are entirely those of the species ; varying in size, but often as large as in any form. The base of the apothecia is often fibrillose. On cedars, Inscription Rock (Pacif. R. R. Survey), Dr. Bigehw. Lobes flat, wide, but truncate, and irregularly heaped, the margins scarcely ascendant, and naked in the specimens. On charred wood. New Mexico, Mr. Fendler. With much the aspect of at least one of the specimens of Schjer. Lich. Helv. n. 382 (P. candelaris), which I cannot but refer here ; the learned author not distinguishing his vai*. OF ARTS AND SCIENCES. 387 lychnea from his var. candelaris, at the date of the Spicilegium. Arctic America, Richardson (Herb. Hook.) ; approaching the next. Var. S. LACiNiosA, Duf. : microphyUina, suborbicularis, lacero-dis- secta, e flava aui-antiaca ; laciniis planis adscendentibus nudis. Parm. farietina, e, Fr. Lichenogr. p. 73. Schser. Spicil. p. 477, & Lich. Helv. n. 381. Koerb. S. L. Germ. p. 91. On trees. New England, very common on the coast, the apothecia smallish and scattered ; and ex- tending to Virginia. South Carolina, Mr. Ravenel. Alabama, 3£r. Peters. Texas, Mr. Wright. Var. e. EAMULOSA, Tuckerm. : microphyUina, e virescente flava ; lobis pumilis dispersis laxe decumbentibus semiteretibus dichotomo- ramulosis ; apotheciis concoloribus. Report on Lich. U. S. N. Pacif. Expl. Exp. ined. On bushes, Mare Island, California, 3fr. Wright. The lobes pass in this curious variety into subterete branchlets. Spores as in the species. Var. f. FiNMARKiCA, Ach. : microphyUina, flavo-aurantiaca ; lobis erectis laceris lacunosis complicatis apice demum multifido-ramulosis. Lecanora candelaria, var. Finmarhica, Ach. Syn. p. 192. P. parietina, var. pygmcea, Fr. Lichenogr. p. 73 ; Moug. & Nestl. Cr. Vog. n. 743, d. Rocks, Behring's Straits, Mr. Wright. An extreme form, referred to Borrera, according to Fries, 1. c, by Bory. 3. P. CANDELARIA (Ach.), Nyl. Prodr. Gall. p. 60. Lecanora, Ach. Lichenogr. p. 416, a; Syn. p. 192, a. Moug. & Nestl. Cr. Vog. n. 743, a. Parmelia parietina, i. concolor, Fr. Lichenogr. p. 73 ; Tuckerm. Synops. Lich. N. E. &c., p. 31. P. parietina, e. candelaris, Schser. Spicil. p. 477, & Lich. Helv. n. 382, pr. p. Candelaria vulgaris, Massal., Koerb. S. L. G. p. 120. On trees. Arctic America, Rich- ardson (Hook, in Frankl. Narr. p. 760). Pennsylvania, Muhl. Catal. New York, Halsey. New England. Ohio (infertile), Dr. Hay den. Louisiana (infertile). Dr. Hale. Thallus spreading irregularly, green- ish-yellow ; the crowded, minute, dissected squamules powdery at the margin, and often passing into a subgranulose crust ; apothecia smallish, of the same color. Spores smaller than those of the preceding species, and the spore-sacs always containing many (20) instead of eight spores, as in that. Distinguishable from the small-lobed varieties of P. parie- tina, but the important character of the Lichen is the microscopical one of polysporous spore-sacs ; the value of which, in the system, has probably been over-estimated by those writers who have sought to found a generical distinction upon it. 38S PROCEEDINGS OF THE AMERICAN ACADEMY Var. STELLATA, Nyl. : thallo orbicular! stellato viridi-flavo ; laciniis planis ambitu multifidis demum subconnatis ; apotheciis saturate flavis rufescentibus margine thallino integro demum plicato subtus radiato- fibrillosis. Sporfe minutre, ellipsoideaj, incolores, " polari-dyblastge," plures (c. 20) in tliecis. P. candelaria, v. stellata, Nyl. Enum. Gen. 1. c. p. 106. Parmelia diversicolor, Ach. Syn. p. 210, pro p. P. {Physcia) jilrosa, Fr. PI. Homon. p. 284 ; Lichenogr. p. 75. P. jihrosa j3. stel- lata, Tuckerm. in Darlingt. Fl. Cestr. p. 440, & Lich. Exs. n. 88. On trees and rocks. Pennsylvania, MuJilenherg, 1796 (e Hoffm. D. Fl. 2, p. 159). New England, common. New York, Dr. Sartwell. Ohio, Dr. Hayden. North Carolina, Dr. Curtis. South Carolina, Mr. Ravenel. Alabama, Mr. Peters. Louisiana, Dr. Hale. Texas, 3Ir. Wright. The relation of this Lichen to Physcia was pointed out by Fries, 1. c. ; but its full determination, as a stellate, foliaceous form of the European Parmelia candelaria, a, of Acharius, was left for the microscope, in the able hands of Dr. Nylander. The presence of fibres on the under side of the thalline exciple is a far less uncommon feature in American Lichens than it is in European. § II. Species thallo glauco-fuscescente ; sporis hyalinis uniseptatis. 4. P. EUPLOCA, Tuckerm. : thallo suborbiculari moUiusculo fragili glabro e laciniis tereti-compressis dichotomo-ramosissimis apice furcatis implexis appressis glauco-fuscescentibus subtus albidis nudis ; apotheciis sessilibus disco fuscescente demum convexo marginemque crassiusculum subcrenulatum excludente. Spora3 suboctona; in thecis, parvulte, ob- longoe, incolores, uniseptatte, diam. 3 - 3^-plo longiores. Tuckerm. Suppl. in Amer. Journ. Sci. 25, p. 424. Rocks on the banks of creeks in the hills of the Blanco, Texas, Mr. Wright. An elegant species without near affinity, that I can trace, to any other. § III. Species thallo glaucescente (fuscescente) ; sporis fuscescentihus uniseptatis. 5. P. ERiNACEA, Ach. Lichenogr. p. 599 ; Syn. p. 222. On trees, California, Menzies. Sea-coast of California, Dr. Parry (Herb. Torr.). The entire thalline margin of the apothecia appears to distinguish this Lichen, which, in the thallus, resembles the next species, and also some forms of P. speciosa. 6. P. ciLiARis (L.) DC. var. angustata, Tuckex'm. Synops. p. 32. OF ARTS AND SCIENCES. 389 Borrera angustata, Bory in Herb. Berol. B. Boryi, Willd. in Fee, Ess. p. 96, tab. 2, fig. 23, e Fr. Lichenogr. p. 76. Physcia soknaria, Dub. Bot. Gall. II. p. 612, non Borr. solenaria, Ach. P. ciliaris, v. solenaria, Auctt. On the earth and upon rocks. Arctic America {B. ciliaris), Eichardson (Frankl. Narr. p. 761). Newfoundland, Bory in Herb. Berol. Rocky Mountains, fertile. Herb. Hook. Shores of Lake Su- perior, fertile, Mr. C. G. Loring, jun. Shores of Willoughby Lake, Vermont, Mr. Frost. Does not appear to differ from a Corsican speci- men of P. so/encma, Dub., from Von Krempelhliber, which is infer- tile, but with yellowish " cephalodia " ; but the cited name, which was given to a different Lichen by Acharius, is hardly to be preferred to that of Bory. Apothecia similar to those of the species, but smaller ; the disk black, with a white bloom ; the erect margin torn, or at length radiate-fimbriate ; spores (of the species) large, olivaceous-fuscous, ob- liquely ellipsoid, once-septate, about thrice longer than wide. The Lichen is among our rarest. 7. P. AQUiLA (Ach.), NyL var. detonsa: e glauco fuscescens; laciniis elongatis subplanis margine coralloideo-subfimbriatis. Parmelia detonsa, Fr. Ph Homon. p. 284 ; Tuckerm. Synops. Lich. N. E. p. 32, & Lich. Exs. n. 18. Trees and rocks. Pennsylvania (P. aquila), Muhl. Catal. New England to Virginia, common in woods. Ohio, Mr. Lea. North Carolina, Rev. Dr. Curtis. South Carolina and Georgia, Mr. Ravenel. Alabama, 3Ir. Beaumont. Mississippi, Dr. Veitch. Louisiana, Dr. Hale. Much as extreme forms of our Lichen differ from common European states of the species, it is difficult to separate it, even as a variety. I find no difference in the spores. Mr. Wright collected the same plant in Japan. (U. S. N. Pacif. Expl. Exp.) The species appears to be in intimate relations with P. ciliaris, and is also near to narrow states of the next species, with which Dr. Nylander (Prodr. Gall. p. 63) com- pares the American Lichen. 8. P. PULVERULENTA (Schreb.),Nyl. Parmelia {Physcia) pulveru- lenta, Fr. Lichenogr. p. 79, a, thalli laciniis appressis margine nudis, Fr. 1. c. P. pidveridenta, a, Tuckerm. Synops. p. 32. Parm. pidveru- lenta, venusta, & muscigena, Ach. On trunks and rocks, and on the earth, upon mosses. Pennsylvania, Bluhlenherg. Arctic America {P. muscigena), Richardson. New England, common on trunks of Elm, and other trees. New York, passing into narrow states reserabhng the last, Dr. Sartwell. Nebraska, on the earth, a fragment. Dr. Hayden. 390 PROCEEDINGS OF THE AMERICAN ACADEMY Vai-. ^. riTYREA, Fr., thalli (magis cinereo-virentis) laciniis adscen- dentibus subtus fibrillosis margine pulverulentis. Fr. 1. c. & Licli. Suec. n. 105. Lichen, dein Parmelia pityrea, Ach. ; Moug. & Nestl. Cr. Vog. n. 352. P. pulverulenta, y.grisea, Schtcr. Spicil. p. 446, & Lich. Helv. n. 487. Lichen leucoleiptes, Muhl. in Herb. Willd. P. pulverulenta, v. leucoleiptes, Tuckerm. Synops. Lich. N. E. p. 32, & Lich. Exs. n. 107. On rocks and trees. Pennsylvania, Muhlenherg. New England to Virginia, common. Texas, Mr. Wright. Mountains of New Mexico, Mr. Fendler. Lobes often wider than those of a, and rock-specimens of the present contrast strongly with tree-specimens of the former. The present is analogous to, and often much resembles P. speciosa /3. (^Parm. granulifera, Ach., in the state with the margins of the lobes raised and powdery), but the two Lichens are distinguish- able, and appear to represent different types ; this presenting the strongly black-fibrillose underside of P. pulverulenta. 9. P. SPECIOSA (Wulf., Fr.) : thallo cartilagineo-membranaceo vire- scenti-glauco subtus molliusculo e lacteo fuscescente ; laciniis obtusis multifidis subciliatis ; apotheciis subpodicellatis disco rufo-fusco nigri- cante margine thallino incurvo mox crenato-fimbriato. SporjE octonje, majuscula3, fuscescentes, ellipsoideoe, uniseptatte, diam. 2-3-plo longioris. Var. a. STELLATA : laciniis appressis subelongatis inciso-ramosis pin- natifidis margine adscendentibus epruinosis subtus nisi apice epulveru- lentis ; apotheciis subsessilibus mox nudis. Lichen speciosus, Wulf. in Jacq. Coll. IIL p. 119, t. 7. Parmelia, Ach. Lichenogr. p. 480 ; Syn. p. 211 ; Fr. Lichenogr. p. 80, a; Moug. & Nestl. Cr. Vog. n. 635 ; Schier. Spicil. p. 447, & Lich. Helv. n. 357 ; Tuckerm. Synops. Lich. N. E. p. 33, & Lich. Exs. n. 81 ; Nyl. Prodr. Gall. 1. c. p. 61. On trunks and mossy rocks in woods. Pennsylvania, Muhlenherg, 1796 (Hoffm. D. Fl. IL 153). New England to Virginia, common in the mountains, but somewhat rarely fertile ; the ascendent margins of the lobes often powdery, or passing, on rocks, at the centre, into a thick powdery crust. Lake Superior, Prof. Agassiz. Wisconsin, 3Ir. Lapham. North Car- olina, infertile. Rev. Dr. Curtis. South Carolina, in the upper country, infertile, Mr. Ravcnel. Alabama, infertile, Mr. Beaumont. Louisiana, Dr. Hale. Var. /3. GRANULiFEKA : stellata, appressa ; laciniis subplanis irregu- lariter laciniatis dentato-crenatis (subpruinosis) granulis globosis niveis aspersis margine demum adscendentibus subtus glabris e fusco nigri- OF ARTS AND SCIENCES. 391 cantibus ; apotheciis subsessilibus disco subnudo margine thallino cre- niilato mox pulverulento. Spora? speciei. Parmelia granulifera, Ach. Syn. p. 212. On trunks and rocks. Pennsylvania, fertile, Muldenherg. Frederick County, Maryland, infertile. South Carolina, in the low country, abundantly fertile, 3L\ Eavenel. Louisiana, fertile. Dr. Hale. Texas, fertile, Mr. Wrigld. I have specimens compared by me with one from Muhlenberg (from whom Acharius had the Lichen) in Herb. Willd. It is a Southern form, and occurs, covered with apothecia, on the low islands of the coast of South Carolina, while the typical form prefers the mountains, southward, and is rarely fertile. The original plant of Acharius is distinguished by its flatter, less divided lobules, the margins of which are not raised, powdery, or ciliate. A state of this evidently recedes towards P. stellaris, with which species it also agrees in its nearly entire, glaucous-pruinose apothecia. But the Lichen varies into a form (exactly P. granulifera, Meissn., from Brazil, in Herb. Kunz.) well represented by the Carolina Lichen, which only differs from the type in its shorter, wider, less discrete, and less di- vided lobes, with margins somewhat minutely notched and powdery ; and in its entirely smooth, and at length nigrescent underside. A similar Lichen, also blackish beneath, occurs in Venezuela {Mr. Fend- ler\ in which the raised margins of the lobes and the whole centre of the specimen is densely w/tZmif-efiiorescent. And Mr. Wright found specimens, growing with P. applanata, on maritime rocks in Japan (U. S. N. Pacif. Expl. Exp.), which are colored similarly to the last, and appear fully to belong here, but are besprinkled with regular and rounded soredia. Yar. y. hypoleuca, Ach. : stellata, glabra, nuda, appressa ; laciniis planis multifidis subtus mollibus subpulverulentis ; apotheciis subsessi- libus maximis nudis, margine crenato-folioloso. Sporas speciei. Par- melia speciosa, v. hypoleuca, Ach. Syn. p. 211. P. hypoleuca, Muhl. Catal. p. 105 ; Tuckerm. Synops. p. 33, & Lich. exs. n. 108. Montag. & V. d. Bosch. Lich. Jav. p. 21. On trunks. Pennsylvania, Muhlen- berg. New England to Virginia, not common, and abundantly fertile. New York, Dr. Sartwell. Ohio (a state with erect lobules). Dr. Hay- den. Texas, both the state above described, Avhich is only sparsely fibrillose beneath at the margins ; and another, inseparable, which is without pulverulence and rather thickly fuscous-fibrillose on the under side ; Mr. Wrigld. The largest and handsomest state of the species 392 PROCEEDINGS OP THE AMERICAN ACADEMY with US, and always distinguishable by its entirely smooth, scarcely notched, often subconnate lobules, Avhicli are more or less powdery- tomentose beneath. The Lichen also recedes towards P. stellaris, but approaches it less nearly than a similar state of the last variety. The Java Lichen, for which I am indebted to Dr. Van den Bosch, does not appear to differ from ours. Var. b. podocarpa: stellata, glabra; laciniis plano-convexis multifi- dis lobulis simpliciusculis subadscendentibus subtus pulverulento-tomen- tosis margine villoso-fibrillosis ; apotheciis elevato-podicellatis pruinosis margine crenato-lobulato. Sporte speciei. Parmelia podocarpa, Bel. Voy. Ind. Or. IL pag. 122, cit. Montag. & V. d. Bosch. Lich. Jav. p. 2L P. leucomela, v. podocarpa, NyL Enum. Gen. 1. c. p. 106. On branches of trees in thick woods, Cuba, 3Ir. Wright. But the Lichen is only an intermediate state between the aj)pressed conditions of the pi-esent species, and the immediately following erectish state, into both of which it distinctly passes, both in Cuba and in Louisiana (Dr. Hale). Var. e. GALACTOPHTLLA, Tuckerm.: adscendens, glabra ; lobis abbre- viatis superne dilatatis repandis subtus pulverulento-tomentosis margine villoso-fibrillosis ; apotheciis oblique subpodicellatis pruinosis margine crenulato-sublobatis. Sporge speciei. Parmelia involucrata, Mey. in Spreng. Syst. Veg. Cur. Post. p. 328, e descr. P. comosa, Eschw. Bras, p. 199 ; Nyl. Enum. Gen. 1. c. p. 106. P. echinata, Tayl. in Hook. Journ. Bot. 6, p. 166, e Nyl. Lich. Exot. P. cillaris, var. galacto- phylla, Tuckerm. Synops. p. 32. P. speciosa, var. galactophylla, Ejusd. Lich. Exs. n. 82. Parmelia galactophylla, Willd. Herb. On trees, very rare northward, and less fibrillose, when it does not appear to differ from the widest states of P. leucomela, var. latifolia, Flot. <5c Mey. (Herb. Kunze. Herb. Berol.), and is sometimes {P. erinacea, Hamp. in Herb. Kunze, from Peru) almost undistinguishable from European states of P. ciliaris ; — but southward becoming common and densely fibrillose, the fibres at length covering every part of the surface, as in the state described by Eschweiler. Maine, infertile, 3Ir. Oakes. Cambridge, Massachusetts, on Red Cedar, infertile, very rare. Hingham, on Red Cedar, infertile, Ifr. Russell. Pennsylvania, 3Iuh- lenherg, fertile, 1796 (Hoffm. D. Fl. H. p. 144, where it is cited under P. ciliaiis, under which species Floerke also placed the Lichen, with a mark of doubt, in his herbarium. Herb. Berol.). Ohio, on Red Cedars, fertile, 3Ir. Lea. Mountains of Virginia, B. D. Greene, Esq. North OF ARTS AND SCIENCES. 393 Carolina, Rev. Dr. Curtis. South Carolina, Mr. Ravenel. Alabama, Mr. Peters. Mississippi, Dr. Veitch. Louisiana, Dr. Hale. Texas, Mr. WrigJit. At first sub-stellate, and scarcely dilated, when the fer- tile specimens only differ from the last variety so far as the apothecia are less strikingly pedicellate ; and the infertile ones from substellate less canaliculate specimens of the next, in nothing but the elongation which is so characteristic a tendency in the latter : — but the short, dilated, erectish lobes of the fully developed and fertile Lichen, and its peculiarly conspicuous, milk-white under-side (which furnishes a more constant distinction than that indicated by the name adopted by Esch- weiler), are sufficiently striking. Cuban specimens of the present vari- ety are often more or less suffused, especially at the tips of the lobes, and the margins of the apothecia, with a (sometimes intense) brick-red color ; this occurs equally in the preceding variety, and according to Montague and Van den Bosch (Lich. Jav. p. 22), who consider it ad- ventitious, was regarded as characteristic of his P. podocarpa by Be- langer. I observe the same in Cuban specimens of the typical form. Var. C' LEUC03IELA, Eschw. : adscendens, glabra, e substellata mox diffusa, eiongata ; laciniis attenuatis ciliato-fibrillosis subtus pulverulento- tomentosis ; apotheciis subpodicellatis pruinosis niargine demum radiato- lobatis. Sporaj speciei. Lichen leiicomelas, L., Sw. Obs. Bot. tab. 11, f. 3. Physcia, Michx. Fl. Bor. Am. 2, p. 326; Dub. Bot. Gall. 2, p. 612 ; Nyl. Enum. Gen. 1. c. p. 106. Parmelia, Ach. Meth. p. 256 ; Fr. Lichenogr. p. 76 ; Montag. Crypt. Canar. 1. c. p. 111. Borrera, Ach. Lichenogr. p. 499 ; & Syn. p. 222. Parmelia speciosa, b. Fr. Lichenogr. p. 80 ; Moug. & Nestl. Crypt. Vog. n. 941. P. speciosa, var. leucomelas, Eschw. Bras. 1. c. p. 198. Lichen comosvs, Bory, Voy. cit. Ach, On trees, and probably also, as in Cuba, on rocks. Trees, Grandfather Mountain, North Carolina, the specimen belonging to the wider states, Michaux. On Red Cedars, infertile, Ohio, Mr. Lea. On trees in the mountains of Virginia, Rev. Dr. Curtis ; and of Carolina, Mr. Ravenel. Florida, Herb. Russell. Texas, i>r. Parry. The Ohio specimens were found growing with those of the last variety, which looks like the fertile state of the same lichen ; nor is it possible to distinguish narrow-lobed specimens of that from others of the present variety except by the difference of size, and especially of elongation. Excluding from this the short, wide-lobed South American forms (P. leuco7nela, var. latifolia, Mey. & Flot. pr. p.), which, as already re- VOL. IV. 50 394 PROCEEDINGS OF THE AMERICAN ACADEMY marked, are inseparable from states of the last, we appear to have in the Lichen now under consideration — which passes, without any break in the connection, from the substellate and nearly horizontal form of the middle of Europe (Moug. & Nestl. Cr. Yog. n. 941, with which the Ohio, and most of the other North American specimens accord) to the much elongated, almost filamentous, loosely decumbent states of the tropics (P. leucomela, var. angustifolia, Mey. & Flot.) — the extremest atypical development of our species in a centrifugal direc- tion, as, in the nearly erect variety galactopliylla, in a centripetal. Professor Fries first observed that this species passed into several varieties (" vario modo mutatur," Lichenogr. 1. c.) in America ; and did not hesitate also to refer here the P. leucomela of Middle and West- ern Europe, though he retained, as specifically distinct, the narrower, subtropical form. And I owe to him the suggestion that P. comosa, Eschw., should be placed here, rather than under P. ciliaris. But this last-named species appears itself almost too near to states of P. speciosa already cited ; — differing, however, to a degree in color, and receding rather towards P. aquila. 10. P. Leana, Tuckerm. in litt. Parmelia {Physcia) Leana, Tuck, in Lea, Catal. PI. Cincinn. p. 45. On trees. Ohio, Mr. Lea. Thallus thin and brittle, naked and smooth on both sides ; the somewhat ascend- ent, loosely imbricated lobes multifid, much as in common states of the last species, with flat, nearly entire lobules, which are glaucous-fusces- cent above (reminding in this respect of pale states of P. ohsciira) and pale beneath, where occur a few scattered fibres at the margins of the same color. The apothecia are smallish (compared with those of the last species), subsessile, and entire. The spores are smaller, narrower, and more acute. The Lichen appears to partake at once of the char- acters of P. speciosa and P. obscura, but I cannot refer it to either. Rocks and trees, Burlington, Vermont, with marginate soredia, 3fr. Russell; who compares the Lichen with P. speciosa; to which Profes- sor Fries considered the Ohio Lichen as approaching nearest. Rocks in the "White Mountains, Mr. Oahes ; similar to the last. Trees, Texas, Mr. Wright, a smaller-lobed state, like the last two, growing with P. ohscura ; which is distinguishable at once, by its black and densely black -fibrillose under-side. These latter states, which generally agree with the described plant, appear to approach P. ohscura, much as that does P. speciosa. OF ARTS AND SCIENCES. 395 11. P. STELLARI3 (L.) : tliallo subcartilagineo glaucescente epruinoso subtus glabro e pallido nigricante fibrilloso ; laciniis multifidis ; apothe- ciis sessilibus, mai'gine tumidulo subintegro, disco fusco-atro subpruinoso. Fr. Lichenogr. p. 82, panels mutatis. Spora3 octonai', ellipsoideaj, fus- cescentes, uniseptatas. Vax'. a. AiPOLiA, Schser. : stellata, nuda, glabra ; laciniis convexiusculis subtus pallidis. Lichen stellaris, L. pro parte. Parmelia, Ach. ; Fr. Lichenogr. 1. c, a; Moug. & Nestl. Cr. Vog. n. 163; Schaar. Spicil. p. 438, & Lich. Helv. n. 350, 351 ; Tuckerm. Synops. Licb. N. E. p. 33, & Lich. exs. n. 83 ; Nyl. Prodr. Gall. p. Gl. On trees, dead wood, and rocks. Pennsylvania, Muhlenberg. New York, Torrey. Arctic America, Richardson. New England, exceedingly common, in forms with the lobes subconnate (P. aijiolia, Ach.), and more dis- tinct {P. aipolia, v. a7ithelina, Ach.), and a slender rock -form diverging yet farther (P. phcea, Tuckerm. in Darlingt. Fl. Cestr. p. 440) and continuing common southward to Virginia. North Carolina, Rev. Dr. Curtis. South Carolina, Mr. Ravenel. Alabama, Mr. Peters. Louis- iana, Dr. Hale. Texas, Mr. Wright. New Mexico, 3£r. Fendler. All the specimens from Carolina southward shoAV a tendency to pass into smaller, narrower states, which appear to be inseparable, specifically, from the next. Var. /3. ASTROIDEA : stellata, nuda, glabra, microphylla ; laciniis planis mox sorediatis subtus e pallido demum nigris. P. astroidea, Clem. Ens. Add. p. 302, cit. Ach. ; Fr. Lichenogr. p. 81 ; Tuckerm. Enum. Lich. N. Amer. p. 50 ; Nyl. Prodr. Gall. p. 62. P. Caricce, Clem. 1. c. Lecanora, Ach. Syn. p. 188. P. Clementiana, Ach. Lichenogr. p. 483 ; Syn. p. 201 ; Moug. & Nestl. Cr. Vog. n. 737. P. Clementi, Turn, in Linn. Trans. IX. p. 140, tab. 13, fig. 1. P. sidei-alis, Ach. Syn. p. 207. P. ohsessa, Ach. Syn. p. 213; Montag. Cuba, p. 227. P. astroidea, var. ohsessa, Nyl. Lich. Exot. 1. c. p. 255. On trees. New England to Virginia, becoming more common southward. Pennsyl- vania (Partn. ohsessa), Muhlenberg. North Carolina, Rev. Dr. Curtis. South Carolina, Mr. Ravenel. Alabama, Mr. Peters. Louisiana, Dr. Hale. Texas, Mr. Wright ; who has also collected the same plant in the Loo Choo Islands (U. S. N. Pacif. Expl. Exp.) and in Japan ; the latter only differing from the type in its rounded soredia ; also in Cuba and Nicaragua. The North American Lichen referred here occurs in forms which I cannot distinguish from normal Portuguese specimens 396 PROCEEDINGS OF THE AMERICAN ACADEMY of P. astroidea, and in others which pass imperceptibly into P. stel- laris. These conclusions are results of much, oft-repeated study of large collections of specimens, in numerous states of development and degeneration. The smooth, normal Lichen, as it occurs in Texas and Cuba, may be referred, with equal right, to P. astroidea or P. stellaris. And the more northern, sorediate form (P. ohsessa, Acli.) only differs from sorediate European' states in the greater size and regularity both of the thallus and the soredia. But in tropical America, our plant departs much farther from its type, acquiring not merely a greater smoothness and elegance, but becoming entirely black beneath (P. ob- sessa, Montag. Cuba, 1. c), a condition which now resembles, in general habit, the present variety ; is now larger, on rocks, with the aspect of P. stellaris ; and finally, occurs on trees, with all the characters, except the color of the under side, of P. Pomingensis, Montag. Acharius de- scribes his P. ohsessa as black beneath, while I have always found the northern form, here referred to his species, pale on the under side ; but there is no reliance to be placed upon this character in the specimens from Cuba and Nicaragua, which occur, entirely similar above, but now black and now pale-fuscous beneath, and varying in the same manner in the color of the little ring of fibres which often surrounds the base of the thalline exciple. Var. y. DoMiNGENSis : stellata, nuda, platyphylla ; laciniis planis margine ssepius pulverulentis subtus pallidis. Parmelia {Physcia) Do- mingensis, Montag. Cuba, p. 225 ; Nyl. Enum. Gen. 1. c. p. 106. On trees. Seaboard of South Carolina, Mr. Pavenel. Key "West, Florida, Dr. Blodgett. Louisiana, Dr. Hale. Bottoms of the Blanco, Texas, Mr. Wright. Passes into the last variety, in Cuba ; and an entirely smooth state, from the Bonin Islands, near Japan (U. S. N. Pacif. Expl. Exp. Mr. Wright), exhibits at once the larger and wider lobes of the present, and the smaller and more divided ones of var. astroidea. But the American Lichen is almost always and elegantly characterized by its powdery margins. The plant also approaches P. speciosa, var. gramdifera (P. gramdifera, Ach. Syn.), especially that state with pow- dery margins (P. granulifera, Meissn. in Hb. Kunz.), but is always, so far as my specimens go, distinguishable from that, by a certain diver- gence of habit, resulting in part from a different lobation ; the wider and always flat divisions of P. Domingensis, Montag., with their reg- ular palmate summits and slightly notched lobules, contrasting with OF ARTS AND SCIENCES. 397 the more irregular laciniation, and the rather convex and strongly toothed lobes, of P. granulifera ; which, in the state here referred to, may be P. Domingensis, Ach. ; a distinct Lichen, according to Dr. Ny lander (1. c.) from that so named by Montagne. Var. 8. (tribacia) Fr. : subadscendens, microphylla ; laciniis planis margine eroso-granulosis in crustam dein granulosam conglobatis. Par- melia stellaris, c, Fr. Lichenogr. p. 83 ; Tuckerm. Synops. Lich. N. E. p. 34, & Lich. exs. n. 85. Lecanora tribacia, Ach. Syn. p. 191, pr. p. On trees, very common, from New England to Virginia. South Caro- lina, Mr. Ravenel. Louisiana, Dr. Hale. Var. c. HiSPiDA, Fr. : adscendens ; laciniis subabbreviatis hispido- fibrillosis apice tubuloso-inflatis. Lichen hispidus, Auct. e Fr. Loharia, HofFm. D. Fl. 2, p. 151. Parmelia stellaris, b. hispida, Fr. Lichenogr. p. 82 ; Tuckerm. Synops. Lich. N. E. p. 34, & Lich. Exs. n. 84. Lichen tenellus, Scop. Carn. p. 1406. Parmelia, dein Borrera, Ach. Syn. p. 221 ; Moug. & Nestl. Cr. Vog. n. 450. Physcia, DC. Fl. Fr. 2, p. 39G. Parm. stellaris, v. tenella, Schosr. Spicil. p. 439, & Lich. Helv. n. 352, 562. Trees and rocks. Avciic America., Richardson (Hook, in Frankl. Narr. App. p. 761). New England, not uncommon. Analogous to P. speciosa, e. galactophylla {P. comosa, Eschw.). 12. P. c^siA (Hoffm.), Nyl. Prodr. Gall. p. 62. Parmelia, Ach. Lichenog. p. 479 ; Syn. p. 216 ; Fr. Lichenogr. p. 83. P. pulchella, Schogr. Spicil. p. 437. Var. a. (stellata) Fr., Tuckerm. Lich. Amer. Exs. n. 86. On stones and dead wood. Pennsylvania, Muhlenberg. New York, Halsey. New England, not very uncommon. Var. /3. TRIBACIA, Fr. : subadscendens, microphylla ; laciniis convex- iusculis margine demum eroso-granulosis conglobatis. Parmelia cmsia, c, Fr. Lichenogr. p. 84. Lecanora tribacia, Ach. Syn. p. 191, pro p. Parmelia, Sommerf. Lapp. p. 109. On rocks, New England; very like P. stellaris, S, but differing in the convexity of its somewhat pin- natifid, ash-colored lobules. Var. y. TENELLA, Fr. : adscendens ; laciniis hispido-fibrillosis. P. ccBsia, b. tenella, Fr. Lichenogr. p. 84. Parmelia leptalea, Ach. Meth. p. 198. Physcia, DC. Fl. Fr. 2, p. 395. Borrera tenella, iS. leptalea, Ach. Lichenogr. p. 498 ; Syn. p. 221. On rocks and dead wood. New England ? Differs but little from P. stellaris, e, but the same form has indubitably been traced back (Fr. 1. c.) to both species. P. ccBsia is a 398 PROCEEDINGS OF THE AMERICAN ACADEMY northern Lichen, near to the last species, but occurring here in the same distinctness as in Europe ; nor have I observed any intermediate states. It is, however, by no means as common with us as the last. There are some respects in which one might consider it as bearing possibly the same relation to P. stellaris that P. ciliaris bears to P. speciosa sensu latiori. 13. P. APPLANATA (Fee), Nyl. Enum. Gen. 1. c. p. 107. Parmelia applanata, Fee Ess. p. 126, tab. 32, fig. 2, & Suppl. p. 123, tab. 42, n. 18; Montag. Cuba, p. 223, tab. 8, fig. 1. P. plumosa, Tayl. in Hook. Lond. Journ. Bot. G, p. 173, e descr. On trees. Seaboard of South Carolina, Mr. Ravenel ; of Florida, Herb. Gray ; and of Alabama, Herb. Sartwell. Louisiana, Dr. Hale. Texas, in the valleys of the Blanco, and the Rio Grande, 3fr. Wright. Thallus thickish, softish, stuppeous-membranaceous, closely agglutinate-appressed, from green- ish at length white-glaucescent ; beneath scarcely fibrillose, becoming black ; lobes confluent, crustaceous-concrete at the centre, radiant and somewhat pinnate-plicate at the circumference ; besprinkled at length with rounded soredia ; apothecia scattered, a thin, entire thalline mar- gin bordering an at length convex, violet, naked disk, which becomes black, and rests on a black hypothecium. Spores narrow-ellipsoid, scarcely a little curved, fuscescent, the length about thrice exceeding the width. I possess the same Lichen, a strongly marked and distinct type, but connected with Northern types through the next, from many parts of the warmer regions of the earth, and also from Japan (U. S. N. Pacif. Expl. Exp.), Mr. ' Wright. 14. P. OBSCURA (Ehrh.), Nyl. Lichen ohscurus, Ehrh. PI. Cr. dec. 18, n. 177, cit. Ach. Parmelia (Physcia), Fr. Lichenogr. p. 84 ; Scha;r. Spicil. p. 441, & Lich. Helv. n. 353 - 4 - 5. Physcia, Nyl. Prodr. Gall. p. 63, & Lich. Par. n. 34. Parm. cycloselis, chloantha, & ulothrix, Ach. Syn. Var. a. CILIATA : adpressa, substellata, livido-fuscescens ; lobis planis linearibus subdigitato-multifidis subciliatis subtus nigrescentibus nigro- fibrillosis (pannosis) ; apotheciis subtus fibrillosis. Lichen ohscurus, Ehrh. 1. c, L. ciliatus, HofFm. Enum. Lich. p. 69, tab. 14, fig. 1. Lo- haricc, HofFm. D. Fl. 2, p. 155. Lichen ulothrix, Ach. Prodr. p. 113. Parmelia, Ach. Meth. p. 200 ; Lichenogr. p. 481 ; Syn. p. 217. P. ol- scura, /3. ulothrix, Fr. Lichenogr. p. 85. Tuckerm. Synops. p. 34, &. Lich. Exs. n. 87. P. ohsctira, var. ciliata, Scha^r. Spicil. p. 442. On OF ARTS AND SCIENCES. 399 trees, dead wood, and rocks. Pennsylvania, Muhlenberg. Arctic Amer- ica (P. cycloselis), Richardson (Hook, in Frankl. Narr. p. 761). New York, Halsey. New England to Virginia, common. Ohio, Mr. Lea. Wisconsin, Mr. Lapham. North Carolina, Rev. Dr. Curtis. South Carolina, 3Ir. Ravenel. Mississippi, Dr. Veitch. Louisiana, Dr. Hale. Texas, Mr. Wright. Very variable. P. ulothrix, Ach. is perhaps the most perfect condition of the Lichen, which hardly occurs here without more or less ciliate apothecia, while the ciliation of the lobes appears to be unreliable as a distinction. The present variety includes all our most' perfect states of the species, and I have equally fine specimens of the same variety, from Sweden (^Mr. Torssell), and the finest possible, in all respects, from Japan (U. S. N. Pacif. Expl. Exp.), Mr. Wright: but in the South of Europe the Lichen appears to degenerate, and Schajrer distinguishes (Spicil. 1. c.) the present from P. cycloselis, Ach., "omnium partium minutie." I have collected in New England and New York a large, glaucescent state of this (as I confidently consider it), with proportionately Avider lobes, densely pannose-fibrillose beneath, and the black, tomentose hairs showing also at the margins, — which may well be Parmelia setosa, Ach. Syn. p. 203. There is also, in our mountains, a greenish-glaucous state, with largish, bright-chestnut apo- thecia (commonly ciliate at the base) which might be passed by for Parmelia tiliacea. The following varieties are still more remarkable. Var. )3. ERYTHROCARDiA : strato medullar! aurantiaco-rubro. Par- melia stuppea, Tayl. in Hook. Lond. Journ. Bot. G, p. 175. P. endo- coccina, Koerb. Parei-g. Lich. 1, p. 36, e descr. On trees. California, Beechey, Herb. Hook. (Taylor, 1. c). New England, common, and Avith the lobes and apothecia of the type. Mountains of Georgia, Mr. Ra- venel; less ciliate, and the apothecia scarcely so. Does not appear to differ from the type, except in the internal color. Dr. Koerber's Lichen, from the Tyrol, can scarcely differ from ours. Var. y. ADGLUTiNATA, Sch^r. : arete adnata, membranacea, glauco- fuscescens ; lobis demum confluentibus margine phcatis apicibus nigre- scentibus subtus pallidis. Parmelia adglutinata, Floerk. D. L. 4, p. 7 ; Moug. & Nestl. Cr. Vog. n. 543. P. ohscura, y. ^adglutinata, Schjer. Spicil. p. 442 ; Nyl. (sub Physcia) Prodr. Gall. p. 63 ; Lich. Par. n. 33. On trees (Hickory, Red Cedar, &c.), Massachusetts. Pennsylvania, Dr. Michener. North Carolina, Rev. Dr. Curtis. South Carolina, il/r. Ravenel. Louisiana, Dr. Hale. Texas, Mr. Wright. 400 PROCEEDINGS OF THE AMERICAN ACADEMY Appears to be inseparable from the species, and equally so from the European variety (the Louisiana specimens being quite as depauperate as most of my foreign ones), .but generally a finer plant than the latter, and when perfect, scarcely differing from states of P. applanata, except in color, and in the colorless hypothecium. Parmelia viridis, Montag. Crypt. Guyan., & Syll. p. 329, {Parm. picta, Montag. Cuba, p. 221, tab. 9, fig. 3, non Ach.), appears to be scarcely separable from the North American Lichen ; and these varying conditions are perhaps comparable with the American forms of the European P. astroidea. Pyxine Meissneri, Tuckerm. in litt. : thallo orbiculari cartilagineo radiatim laciniato glabro glaucescente intus sulphureo ; laciniis subplanis appressis pinnatifidis imbricatis subtus nigris ambitu fibrillosis ; apothe- ciis primitus thallo concoloribus excipulo thallino subintegro tumidulo discum planum nigrum cingcnte mox superne nigricantibus margine demum tenuescente nitido disco convexo subexcluso. Sporce suboctonsB, oblongo-ellipsoideaj, uni-septat?e, mox fuscescentes, diam. plusquam 3-plo longiores. On trees in Cuba, and also in Nicaragua, M?-. Wright. And I possess a fine Brazilian specimen, referred to Physcia by Dr. Meiss- ner of Halle, from my kind friend, the late Professor Kunze of Leipzig. Thallus differing from that of the next species in its entire smoothness, and its light-yellow medullary layer. The apothecia are at first ex- ceedingly like those of Physcia applanata, but the exciple soon blackens above, and presents finally a convex disk enclosed by a shining margin of the same color, thinner than the original thalline border, and often looking, but not really, distinct from it. Professor Fries, in estab- lishing this genus (PI. Homon. p. 266), indicated its relations to Um- hiliearia, but did not regard either as Parmeliaceous. In venturing, some years since, to take this view with respect to Pyxine (Synops. Lich. N. E. p. 24, and 35) the writer had before him only the more northern Lichen {Pyxine sorediata, Fr.), the " at first closed, palish " apothecia of which, " becoming patellisform, and, with the altered thai- line margin, black," he considered as indicating " a modification of Par- melia, near to " the section " Amphiloma, Fr." ; a conclusion which the foliaceous thallus, with its compact, crust-like centre, and often dense hypothallus, served to strengthen. But the present species is as clearly inseparable from Parmelia, in the sense of Fries, as it is from Pyxine ; and its position as respects the new tribe Parmeliei, as acutely limited, OF ARTS AND SCIENCES. 401 in the light of our present knowledge of the spores and spermogones, by Dr. Nylander, may still perhaps be regarded as between Physcia {Parmelia § Physcia, Fr.) and Pannaria {Parmelia § AmpMloma and Psoroma, Fr.) : and Eschweiler, it is 'observable, places his Lecidea albo-virens (Lich. Bras, in Mart. Fl. Bras. 1, p. 256), which is clearly Pyxine sorediata, as first observed by Montagne (PL Cell. Cub. in Sagi-a's Hist. Cub. p. 188), in the near neighborhood of his Lecidea (now Pannaria) micropkylla, in which, moreover, he only followed Acharius. There are several points in Dr. Montagne's description and illustration of his P. sorediata (Cuba, 1. c. p. 188), and especially his figure b, seemingly indicating our present species, which is finally very like smoothish states of the next, and may well occur without any trace of its originally Physciaceous fructification ; in which case it should hardly be separable from P. Cocoes {P. sorediata, Fr.), unless by the color of its medullaiy layer, to be considered farther on. And thus the remarkable development of the apothecia of P. Meissneri mig-ht be taken as of value rather as enabling us to determine the true structui'e and natural position of the genus, than- as a specific distinc- tion ; but, however the final state of the new species may approach the old, I have examined many hundreds of specimens of the latter, in its best condition (P. Cocoes )3. sorediata), without finding the least trace or indication of the originally Lecanorine fructification of the former. Spores of P. 3feissneri, lineai'-oblong, and more than thrice as long as wide, at first colorless and simple, an elongated sporoblast occupying the centre, but soon becoming fuscescent, and the sporoblast separat- ing into two roundish ones, which are connected by a narrow isthmus, remaining at least until the central dissepiment appears : these sporo- blasts finally increasing in size till they meet the walls of the spore, when the well-marked limit of each, and the empty ends of the spore beyond it look like other dissepiments and sporoblasts, and the spore might be called 3-septate (comp. Montag. Cuba, 1. c, but the descrip- tion, as I understand it, is not illustrated by the figure given ; and also Eschweiler, 1. c, p. 246), which I think it is not. Pyxine Cocoes (Sw.), Nyh Enum. Gen. 1. c. p. 108. Lichen Co- coes, Sw. in Ach. Prodr. p. 106. Lecidea, Ach. Meth. p. 84; Li- chenogr. p. 216; Syn. p. 54. On Cocoa Palms in Jamaica, Swartz (ex Ach.) ; and in Cuba, 3Ir. Wright. Also in Nicaragua, 3Ir. Wright (U. S. N. Pacif. Expl. Exp.). Acharius distinguished this from his VOL. IV. 51 402 PROCEEDINGS OF THE AMERICAN ACADEMY Lecidea sorediata, mainly by the lighter color and thinner texture of its smoother lobes, and their smoothish under-side ; and Mr. Wright's Cuban collections appear fully to confirm Dr. Nylander's opinion (Lich. Exot. in Ann. Sci. 4, 11, p. 239), that neither of these differences, nor that of size, which extends even to the spores, is sufficient to separate specifically the tropical form from the more northern one. The present, so far as my specimens go, appears to be a smaller and less imbricated Lichen than P. Meissneri, from which it also differs in its white medul- lary layer, and especially in its apothecia, which are exactly those of the genus, as described by Fries, and, more at large, by Eschweiler. There is also in P. Cocoes a tendency to sorediate efflorescence, which becomes marked and characteristical in the northern Lichen, which, I cannot but think, deserves still a separate, if a subordinate place. Var. /3. SOREDIATA : thallo cartilagineo glauco-cinerascente intus fusco-sulphureo (pallescente), laciuiis rugoso-plicatis ; sorediis rotun- datis csesiis marginalibus exasperatis subtus subspongioso-fibrillosis ; apotheciis ca^sio-pruinosis (nudis). Lecidea sorediata, Ach. Syn. p. 54. Pyxiiie, Fr. PI. Homon. p. 267. Lecidea (§ Pyxine), Eschw. Bras. 1. c. p. 245. Parmelia (§ Pyxine), Tuckerm. Synops. Lich. N. E. p. 35, & Lich. Exs. n. 19. Lecidea albo-virens, Eschw. Bras. 1. c. p. 256. On trees and rocks, Pennsylvania, Muhleixberg (Ach. Syn. 1. c. 1814). New England to Virginia, not rare, especially on moun- tains. Westward to the Rocky Mountains, Herb. Hook. North Car- olina, Rev. Dr. Curtis. South Carolina and Georgia, Mr. Ravenel. Alabama, Mr. Peters. Mississippi, Dr. Veitch. Louisiana, Dr. Hale. Texas, where occur also small forms like a, 3fr. Wright. The same unwearied botanist has collected the Lichen also in Cuba, and in Japan. And I am indebted to Dr. Hooker for an infertile, but otherwise undistinguishable specimen from the Himalaya, and to Dr. Van den Bosch for satisfactory ones from Java. It was upon this Lichen, first observed by Muhlenberg, that Fries constituted his genus. The plant differs from the earlier P. Cocoes (Sw.), Nyl., in being every way larger ; in its darker, finally ashy color ; its regular soredia ; and densely spongy-fibrillose under-side : but approaches P. Meissnei-i (to which P. sorediata, Montag., Cuba, 1, c, should perhaps be referred, in part at least) in its dark-yellow (sometimes fuscous, and often pal- lescent) medullary layer ; which is observable (as indicated by Esch- weiler in his Lecidea albo-virens), if nowhere else, immediately beneath OF ARTS AND SCIENCES. 403 the hypotliecium. P. sorediata, var. endochrysa, M. & V. d. Bosch, in Montag. Syll. p. 345, "thalli strato meduUari fulvescente (chamois)," described from specimens of Junghuhn, is an indication of the last- mentioned feature, which appears to me to show itself (though doubt- less finally disappearing, and unknown in a) with moi'e or less distinct- ness, in most of my specimens. In P. coccinea, M. & V. d. Bosch, Lich. Jav. p. 40, the same layer is described as blood-red. As already remarked under our first species, the present differs from that in pos- sessing the pseudo-Lecideine apothecia of the genus, as defined by its illustrious author, and others ; only varying from their descriptions in the fructification, being at first pale (as indicated by the present writer, 1. c.) and also, in the variety now before us, bespread at length with a gray bloom (comp. Eschweiler's " apothecia . . vix canescentia " in his Lecidea albo-virens, 1. c), which is very often wanting. The spores of the present foi'm do not differ appreciably from those of other species, unless in proportional dimensions. They are often ellipsoid, slightly constricted at the middle, once-septate, and fuscous ; about two and a half times longer than wide : but occur perhaps more commonly in a rather elongated, oblong, less colored and less simple state, in which the protoplasm develops at first (as in many spores) into a square, or oblong sporoblast, which then divides into two, which are connected by a narrow isthmus (like the neck of an hour-glass, or, more often, of dumb-bells) through the middle of which passes the dissepiment of the spore ; which reaches, in this state, to nearly the length of the spores of P. 3Ieissneri. The ends of the sporoblasts towards the (empty) tips of the spore are so well defined that it is diflicult not to describe these sporoblasts as becoming at length larger, oval, and once-septate, and the spore as thus thrice-septate (and this view has been taken by eminent writers), but I venture to propose the above as perhaps the true one ; and to regard the genus as possessing spores typically once- septate ; and as approaching, therefore, species of Physcia as closely in this respect, as it does also, according to Dr. Nylander (in his observa- tions on P. 3Ieissneri, in Lich. Exot. 1. c, p. 255) in its spermogones. Pyxine retirugella, NyL Lich. Exot. 1. c, p. 240, is the only remaining species known, not above noticed. In this, which was col- lected in Nukahwa, growing on stones and rocks, by Mr. Jardin, the thallus is described as reticulate-rugulose, like that of Parmelia saxa- tilis ; and the apothecia as resembling those of the last species. Very 404 PROCEEDINGS OF THE AMERICAN ACADEMY elegant specimens, collected by Mr. Wright, from stems of Pandanus, in the Bonin Islands (Herb. U. S. N. Pacif Expl. Exp.), with linear, elongated, discrete lobes, which are brought into relief by the black hypothallus, have just the marking above described, and the regular soredia, and whole asyect oi Pyxine ; but are without fructification. Pannaria leucosticta, Tuckerm. in litt. : thallo e squamulis cartilagineo-membranaceis glauco-fuscescentibus ambitu expansis sub- elongatis pinnato-incisis centro adscendentibus imbricatis dissectis dentato-crenatis, crenis albo-pulverulentis, hypothallo creruleo-nigro marginante ; apotheciis appressis convexis rufis margine thallino persistente subincurvo crenulato mox pulverulento. Sporoe ovoidete, simplices, incolores, diam. 1^-2-plo longiores. — Parmelia (Psoromci) leucosticta, Tuckerm, in Darlingt. Fl. Cest. p. 441. On trees and rocks. New England to Virginia, not uncommon. Pennsylvania, Dr. Michener. North Carolina, Rev. Dr. Curtis. South Carolina and Georgia, Mr. Pavenel. Alabama, Mr. Beaumont. Louisiana, Dr. Hale. Approaching P. microphylla, from which it differs in the colors, in its larger, dissected thallus, and also in the apothecia and spores. And it also approaches (but is always, so far as I have observed, dis- tinguishable from) subsquamulose states of P. ruhiginosa. P. cras- pedia, Koerb. Parerg. 1, p. 45 (1859) from Istria, appears to have some (possibly unessential) features of agreement with our Lichen. But it is interesting, in this connection, that one or two other Lichens, first observed in North America, as Cetraria Oahesiana ( C. Bavarica, Krempelh., and now published also, though I know not from what locality, in Massalongo's Italian Herbarium Exsicc), and possibly Physcia ohscura, var. erythrocardia {Parm. stuppea, Tayl., which can hardly be distinct from P. endoccina, Koerb. 1. c. p. 36, from Tyrol), are, with more or less certainty, inhabitants of the South of Europe. Pannaria crossophylla, sp. nov. : thallo minusculo membranaceo glauco-cinerascente e squamulis subelongatis expansis plumoso-multi- fidis, lobulis linearibus teretiusculis subtus subconcoloribus ; hypothallo nigro obsolescente ; apotheciis appressis convexis rufo-fuscis biatorinis vel excipulo thallino (spurio) tenui crenato demum subcinctis. SporjB ellipsoidece, limbata3, subincolores, diam. mox 4-plo longiores. — On slaty rocks, Brattleborough, Vermont, 3fr. Russell. This Lichen, of which I have also received fine specimens from Mr. Frost, appears to differ from all described species in the narrow, teretish divisions of its OP ARTS AND SCIENCES. 405 elegantly brancli-lobed thallus, the longer portions of which closely resemble a delicate feather, or (as implied in the Latin terms pliima- rins and plumatilis) fine embroidered work, or lace. Of the species nearest related, which are all flat-lobed, P. tryptophylla differs in the colors, in the lobation of its very flat and thin divisions, and in its apothecia ; P. microphylla in its closely imbricated crust of small, notched (but " never laciniate-dissected," Fr.) true squamules, and its smaller, oWo?z(7-ellipsoid spores ; and P. Sauhinetii (Montag.), Nyl., a tree-lichen, of which I have been kindly favored with a specimen by the generous author, in the colors, the distinct configuration of the scarcely lobate, larger, and flatter scales, and, like the last, to which it is much nearer than is the present, in its oblong spores. Beneath, our plant is much of the same color as above, but traces of a blackish hypothallus are more or less discernible at the centre. Apothecia somewhat immersed, bright brownish-red, convex, and the thin, bia- torine exciple (which has sometimes an apparent, more or less perfect, crenate, but spurious thalline border) scarcely discernible. Spores ellipsoid, rather sharp at the tips, wdiich are often somewhat elongated ; more or less tinged with a hue like that of the gonimous granules ; lim- bate, and the protoplasm commonly separating into irregular, more or less rounded sporoblasts, which are often in polar opposition ; from twice to four times longer than wide. Lecidea microps (Fr. Herb, sub Parmelici), sp. nov. : thallo minusculo granuloso-subsquamaceo imbricato glaucescente ; apotheciis minimis biatorinis rufescentibus concavis vel excipulo thallino tenui integro receptis, Spone octona?, ovoidere, incolores, simplices, diam. 2 - 2|-plo longiores. Lecidea pezizoidea, Schwein. Herb., non Ach. Parmelia microps, Fr. Herb. On the earth, Salem, North Carolina, Schweinitz. I possess only a fragment, given to me by Professor Fries, who had it from Schweinitz. The Lichen has points of re- semblance to Lecanora amniocola, but differs in the spores. It may also be compared with Lecidea coarctata, but appears certainly distinct from it. The whole is so small, that an ordinary lens is hardly suflli- cient to examine its characters ; and I offer it here only for further investigation. Lecidea oidalea, sp. nov. : thallo crustaceo tenui subcartilaglneo demum contiguo la3vigato rimoso verrucoso-areolato flavo-viridi-glau- cescente; hypothallo nigro sublimitato; apotheciis (mediocribus) cupu- 406 PROCEEDINGS OE THE AMERICAN ACADEMY laribus sessilibus nigris disco nudo opaco subscabrido intus albo hypo- thecio fusco-nigro imposito mox convexo-protuberante marginemque tenuem subobscurum excludente. Sporte majusculaj, oblongae, atro- fuscescentes, murali-divissB, diam. 3-plo longiores. On trunks of Oaks, Alcatraz, California, Mr. Wright (U. S. N. Pacif. Expl. Exp.). And I possess a fragment of the same Lichen, from trees on the banks of the Columbia, in Oregon Territory, Dr. Newherry. Crust with much of the habit of states of L. disciformis, from similar habitats, but greenish ; and the margins of the protuberant apothecia perhaps more obscure than in that species. The spores are quite different. These are always without dissepiment, showing at first a grumous protoplasm, which, as the spore attains to its maturity and very dark color, assumes a cellu- lar configuration resembling mason-work, as in L. atro-alba, and other species of the same group (^Rhizocarpon, Koerb.). Lecidea Africana, sp. nov. : thallo crustaceo adnato radioso-lobato mox squamuloso-areolato, areolis applanatis crenulato-lobatis ambitu ri- moso-multifidis Isevigatis luteis subtus nigris ; apotheciis areolis innato- sessilibus cupularibus nigi'is, margine tenui crenulato-rugosulo flexuoso, disco opaco nudo intus albo demum convexiusculo subexcluso. SporiB ellipsoidea^, apicibus acuta3, 1 - 3-septata3, ati'O-fuscescentes, diam. 1|- - 2^-plo longiores. On rocks (friable sandstone) on hills near Simons- town, Cape of Good Hope, Mr. Wright. Thallus in young plants crus- taceous-foliaceous, radiate-lobate ; but the centre passing into mostly flattish, areolate, crenulate squamules, which are somewhat palmate- multifid at the circumference, and black beneath ; bright-yellow, be- coming whitish in some specimens. Apothecia always black ; the slightly tumid or obtusish, wrinkled-crenulate margin at length almost excluded by the convex, naked disk, which is white within and rests upon a black hypothecium. Spores smallish, ellipsoid, with rather acute tips, the at first simple protoplasm dividing into two round spo- roblasts, and crossed by a central dissepiment ; the sporoblasts then divided, and the spore appearing twice or thrice septate, according as the central dissepiment is more or less apparent ; finally blackish- brown, and the dissepiments more or less obscure. The Lichen has, at first sight, a good deal of resemblance to L. geographica, (as Moug. & Nestl. Cr. Vog. n. 640, a Sc /3,) but differs in its at first lobulate, at length squamulose and effigurate thallus, and scarcely less in its apo- thecia and spores, which last are never many-septate. Specimens with OF ARTS AND SCIENCES. 407 more convex lobules occur, and these have something (in miniature) of the plicate aspect of L. Waldenhergii, but the latter is entirely distinct, both in thallus and in its very short and obtuse ellipsoid once-septate spores. Professor Sophocles read the following communication, — On the Difficulty of Identifying- Plants and Animals mentioned by Ancient Greek Authors. Few things connected with Greek philology present more perplexity to the scholar than the identification of plants and animals whose names occur in ancient Greek authors. With regard to the Greek naturalists, as a common rule, they were content to mention only some of the most striking peculiarities of plants and animals. Minuteness of observation and accuracy of description were apparently undervalued by most of them. Consequently they had no technical language, properly so called ; the popular language of the day being deemed sufficiently definite for their purpose. And as each Greek city had its local peculiarities, it was natural that more names than one should be employed to designate a given species. Thus, the dpin ( Quercus Ilex) of most of the Greeks was called ^eXAo'Spvs (literally cork-oak) by the Arcadians. The definitions of classical names of plants and animals found in later and Byzantine glossarists are to be received with caution ; for in many instances they are nothing more than cliildish conjectures. Thus, according to one of Homer's commentators, cpvXia is a kind of olive ; according to another, a wild olive. A third tells us that it is a kind o? fig-tree ; and a fourth, a kind of oak. Apion supposes it to be a species of tree. Ammonius regards it as identical with the mastic- tree (o-x'ws). Lastly, a scholiast gravely affirms, that the cfivXia is a kind of olive called (f)v\la ! Again, the xotpoypvXKios of the Septuagint corresponds to the Hebrew shaphan H^^^y It was one of the ani- mals whose flesh the children of Israel were forbidden to eat. The Jewish doctors of later times imagined it to be the same as the rabbit (the co7iy of the English version of the Old Testament). St. Jerome, who lived many years in Palestine, where this animal abounded, de- scribes it in such a manner as to leave very little doubt that it was the Hgrax Syriacus of zoologists. His Italian readers, however, finding that his description of it applied equally well to the Alpine marmot, 408 PROCEEDINGS OF THE AMERICAN ACADEMY had no difficulty in believing that the xotpoypvXXto? of the Alexandrian Jews was identical with their marmot. Thus, the Latin glossarist recently edited by Dr. Beck, in his definition of choirogryllus (which implies x°'-P°yp'"^^°^^ another form of xotpoypvWios), follows St. Jerome in every particular, except one : he refers the animal to Italy {i?i Italia ahimdans), and not to Palestine. The Byzantines regarded XoipoypvWios, dKavdoxoipos {hedgehog), and varpi^ {porcupine), as sy- nonymous terms. A considerable number of plants and animals mentioned by ancient Greek authors may be identified with the help of the modern language of Greece, as spoken by the common people, provided the following proposition be admitted ; that, ivhen the ancient name of a plant or animal is still heard among the Greeks, the presumption is that it is the traditional name of that plant or animal Thus, there is no reason why the modern p.rjKid, apple-tree, avKid, fg-tree, 6^vd, beech, ^TeSia, elm, (^CKvKa (also QCKvkl or 6\vki), Rhamnus alaternus, irpivdpt or -rrovp- vdpi, Quercus coccifera, dpcos or dpd8i, Quercus Ilex, a-cpevTopi, map>le, should not be regarded as the representatives of the ancient prfkia, avKea, o^ia, TrreXea, (piKvKr], irplvos, dpla, acpevSapvos, respectively. At the same time we must bear in mind that not unfrequently the same plant has different names in different parts of Greece and Turkey. We must remember, also, that the same name is sometimes applied to different species of the same genus, or to different genera of the same order. In some few instances the same name is given even to genera belonging to two different orders. Thus, (})\6p.os or acpikopos in most places represents the Verbascum of botanists ; but in Pelopon- nesus (if I am correctly informed) it is used with reference to the Euphorbia of botanists, elsewhere called yaXar^iSa (from yd\a, milk), on account of its milky juice. Ancient Greek names of plants are often heard in regions that have never been under foreign influence, such as the smaller islands of the iEc^ean, and some of the mountainous districts of European Greece and Turkey. As to the Greeks living among the Turks, they are apt to call fomiliar objects by their Turkish names. In places once occupied by Slavs, some plants have Slavic names ; as jSovft, dwarf-elder, from the Russian buzina {hovCrj^d) ; 'keTTovvrid or XoTrowna or Xo/3oSta, clieno- podium, from the Russian lebedd (Xebcda). A compound of aypios, ivild, in good Greek would naturally denote OF ARTS AND SCIENCES. 409 the wild state of the plant or of the animal whose name appears in the second component part. The Romaic, however, often violates this rule. Thus, dypioXvKos, wild wolf (or savage ivolf), represents the Bartsia Trixago of botanists. Some of the domestic animals are called by names once belonging to the dialect of slang, as developed in the large cities of the Gra^co- Roman empire ; as mTfivos, code, literally, the winged one ; aXoyov, horse, literally, the irrational animal. A few of them have foreign names ; as [lovKdpi (diminutive of the mediaeval novXa, mida), mule ; yaros, cat, fi'om the Italian gatto ; yd8apos (formerly also yaei8apos, delBapos), ass, a modification of the Persian dxBapi. With regard to wild animals, most of them still retain their ancient names, probably because they wei-e seldom seen in large cities, where linguistic alterations and distortions usually commence. Fishes also are often called by their ancient names. For although they were often exposed for sale in the markets of large places, yet their natural history (so to speak) was known chiefly to Jishermen, a veiy small portion of the population of the empire, and the last class of men to tamper with language. President Felton gave an account of the recently-discov- ered papyri, containing portions of the lost works of Hype- reides, the Attic orator. After a general summary of the contents of these interesting docu- ments, which were found in Egypt, and which are now in the posses- sion of the British Museum, he proceeded to discuss the fragments of the Oration of Hypereides against Demosthenes, and the bearings they have upon the charge of accepting a bribe from Harpalus, under which Demosthenes was condemned. He thought the leading points of the argument could be clearly made out from these fragments. In order to set the subject in a proper light, Mr, Felton recapitulated the prin- cipal facts in the political history of the times referred to, — sketched the characters of Harpalus, Hypereides, and Demosthenes, and their j elations to one another, — and then examined the argument, as pre- sented in the fragments, against Demosthenes, giving the reasons why, under the circumstances of the trial, Hypereides doubtless brought for- ward everything that could be said on that side. It was shown that Hypereides made the best of a bad cause ; that he everywhere assumed VOL. IV. 52 410 PROCEEDINGS OF THE AMERICAN ACADEMY the guilt of the accused, pressing into the case collateral topics, Avith appeals to the popular fears and passions of the moment, so as to weave a web of apparent reasoning out of nothing but surmises, unproved as- sertions, and vague possibilities ; that though the duty of prosecuting was laid upon him officially, there was added the stimulus of personal resentment growing out of recent political collisions ; that as no proofs were given, no proofs could have existed ; and that the entire line of attack shows that Demosthenes was sacrificed to the terrors of the mo- ment, and to appease the wrath of Alexander. Chief-Justice Parker discussed the question in the light of the principles of modern law, and sustained the conclusion to which the remarks of President Felton pointed. Professor Agassiz made the first of a series of communi- cations, which maintain the position that varieties, properly so called, have no existence, at least in the animal kingdom. Professor Peirce moved, and the motion was adopted, that special meetings for scientific discussion should be held, at the hall of the Academy, on the fourth Tuesday of March, April, and May. Four liuudred and seveniy-iiiiitli meeting. March 27, I860.— Special Meeting. The President in the chair. Mr. J. A. Lowell, Professor Bowen, and Professor Agassiz discussed adversely the hypothesis of the origin of species through variation and natural selection. The latter reiter- ated his denial of the existence of varieties, properly so called, in the animal kingdom, in the wild state, insisting that what were so called were either stages of growth or phases of cyclical development, and that domesticated vari- eties were of no account in the matter, having no counterpart in nature. Mr. Lowell suggested that the supposed varieties in the vegetable kingdom were the result of hybridation. He also criticised the hypothesis in question on scientific and philo- sophical grounds, and condemned its tendency. OF ARTS AND SCIENCES. 411 Professor Bowen raised similar objections; contending that tliis hypothesis is one of cosmogony rather than of natural history, and makes such huge demands upon time, that the indefinite becomes virtually infinite time, so rendering the theory dependent on metaphysical rather than inductive reasoning ; he denied the validity of all reasoning from the variability of plants to that of animals, or that the two had enough in common to warrant inferences from the one to the other; he also denied the variability of instinct in any animals, or that there was any evidence of the heritability of variations of structure or instinct except in a few sporadic cases, and in these only for two or three generations. He in- sisted that there was no reason why, on the theory, instinct and structure should vary contemporaneously ; and finally he maintained that the theory denied the doctrine of the per- manence of type, as received by all naturalists, was incom- patible with the whole doctrine of final causes, and negatived design or purpose in the animate or organic world. Four hnudred and eiglitietlx meeting. April 10, 1860. — Monthly Meeting. The President in the chair. Professor Horsford introduced Mr. Du Chaillu, who, invited by the Academy, gave some account of his travels in Western Africa, and of his observations of the habits of the Gorilla. Professor Gray criticised in detail several of the positions taken at the preceding meeting by Mr. Lowell, Professor Bowen, and Professor Agassiz respectively ; — premising that he had no doubt that variation and natural selection would have to be admitted as operative in nature, but were prob- ably inadequate to the work which they had been put to. He maintained : — 1. That varieties abundantly occur in nature, at least among plants ; and that very fcAv of them can be of hybrid origin ; that hybridation 412 PROCEEDINGS OF THE AMERICAN ACADEMY gives rise to uo new features, but only mingles, and, if continued, blends, the characters of sorts before separate ; and that a hybrid origin was entii-ely out of the question in species which had no con- geners, or none in the country to which they were indigenous ; yet that such species diverged into varieties as readily as any other. As to the general denial, 1. that there is any such thing as natural selection, and 2. that there is any variation in species for natural selection to act upon, he could not yet conceive how such denial was to be sup- ported ; but to answer its purpose it would have to be carried to the length of denying that the individuals of a species ever have anything which they did not inherit ; — slight variations, accumulated by inher- itance, being just what the theory in question made use of, — taking little or no account of more salient and abrupt variations, though in- stances of the latter kind could certainly be adduced. 2. In opposition to the view that such variations as cultivation or domestication so copiously affords are of no account in the discussion, and have no counterpart in nature. Professor Gray maintained, that the varieties of cultivation afforded direct evidence of the essential varia- bility of species ; that no domesticated plant had refused to vary ; that those of recent introduction, such as Californian annuals, mostly began to sport very promptly, sometimes even in the first or second genera- tion ; man having done nothing more than to sow the seed here instead of in California, perhaps in no better soil. Here the variations were as natural as those of the wild plant in its native soil. Man produces no organic variation, but merely directs a power which he did not originate, and by selection and close breeding preserves the incipient variety which else would probably be lost, and gives it a choice oppor- tunity to vary more. Consider, he remarked, how small the chance of the survival of any variety when originated in its native habitat, sur- rounded by its fellows, — when not one seed out of a hundred or a thousand ever comes to germinate, and not a moiety of these ever suc- ceed in becoming a plant, — and when, of those that do grow up and blossom, the danger is imminent that the flowers may be fertilized by the pollen of some of its abundant neighbors of the unvaried type, — and it will be easy to understand why plants vary so promptly in our gardens, mostly raised from a small quantity of seeds to begin with, prob- ably all from the same stock, where they are almost sure to self-fertilize in the first generation, — where every desirable variation is watched for, OF ARTS AND SCIENCES. 413 and cared for, and kept separate ; — and it may be confidently inferred that they vary in cultivation, at first, much as they would have varied in the wild state, if such favorable opportunity had there occurred. Continued cultivation under artificial selection would of course force some of these results to an extreme never reached in nature, giving to long-cultivated varieties a character of their own. Yet they may not deviate more widely from the wild type than do some of the wild vari- eties of many plants of wide geographical range. Moreover, Professor Gray maintained that there occur in nature the same kinds of varia- tion as those to which we owe our improved fruits, &c. ; that such originate not rarely in nature, and develop to a certain extent, enough to show the same cause operating in free as in controlled nature ; enough to have shown the cultivator what he should take in hand ; enough to render it likely that most of our cultivated species of fruit began their career of improvement before man took them in hand. Instances of such variations in the wild state were adduced from our Hawthorns, especially Cratoegus tomentosa, from our Wild Red Plum, Wild Cherries, and especially from our Wild Grapes and Hickories. 3. The view taken by Mr. Lowell, and especially by Professor Bowen, that the indefinitely long periods of time which the theory required and assumed was practically equivalent to infinity, and there- fore rendered the theory " completely metaphysical in character," Professor Gray animadverted upon, mainly to remark that the theory in question would generally be regarded as too materialistic and physi- cal, rather than too metaphysical in character ; and that, a fortiori, physical geology and physical astronomy would on this principle be metaphysical sciences. 4. Exceptions were taken against the assumption of such a wide distinction, or of any sharply drawn distinction at their confines, be- tween the animal and the vegetable kingdoms, and especially against the view that instinct sharply defines the animal -kingdom from the vegetable kingdom on the one hand, and from man on the other, and Avhich denies to the higher brutes intelligence, and to man instinct. 5. Also, against the view that the psychical endowments of the brute animals, whether instinct or other, are invariable and unim- provable ; and a variety of instances were adduced, as recorded in the works of Pritchard and of Isidore St. Hilaire, as well as some from personal observation, in which acquired habitudes or varied 414 PROCEEDINGS OF THE AMERICAN ACADEMY instincts were transmitted from the parents to their offspring. That such acquirements, once inherited, would be likely to continue herit- able, was argued to be the natural consequence of the general law of inheritance, the most fundamental law in physiology ; that it is actually so, Professor Gray insisted was well known to every breeder of domestic animals. 6. For decisive instances of the perpetuity by descent or fixity, under inter-breeding, of altered structure, Professor Gray adduced Manx cats and Dorking fowls ; and he alluded to well-known cases of six-digited people, and the like, transmitting the peculiarity to more than half of their children, and even gi-andchildren ; showing that the salient peculiarity tended to be more transmissible than the normal state at the outset ; so that, by breeding in and in, it was likely that hexadactyles could soon be made to come as true to the breed as Dorkings. 7. As to the charge that the theory in question denies permanence of type. Professor Gray remarked that, on the contrary, the theory not only admitted persistence of type, as the term is understood by all naturalists, but was actually built upon this admitted fact as one of its main foundations ; that, indeed, one of the prominent advantages of this veiy theory was, that it accounted for this long persistence of type, which upon every other theory remained scientifically unac- counted for. 8. Finally, as to the charge that the hypothesis in question repudi- ated design or purpose in nature and the whole doctrine of final causes, Professor Gray urged : — 1. That to maintain that a theory of the deri- vation of one species or sort of animal from another through secondary causes and natural agencies negatived design, seemed to concede that whatever in nature is accomplished thx'ough secondary causes is so much removed from the sphere of design, or that only that which is supernatural can be regarded or shown to be designed; — which no theist can admit. 2. That the establishment of this particular theory by scientific evidence would leave the doctrines of final cause, utility, special design, or whatever other teleological view, just where they were before its promulgation, in all fundamental respects ; that no new kind of difficulty comes in with this theory, i. e. none with which the philosophical naturalist is not already familiar. It is merely the old problem as to how persistence of type and morphological conformity OF ARTS AND SCIENCES. 415 are to be reconciled with special design, (with the advantage of offering the only scientific, though hypothetical, solution of the question,) along with the wider philosophical question, as to what is the relation be- tween oi'derly natural events and intelligent efficient cause, or Divine agency. In respect to which, we have only to adopt Pi-ofessor Bo wen's own philosophy of causation, — viz. " that the natural no less than the supernatural, the continuance no less than the creation of existence, the origin of an individual as well as the origin of a species or a genus, can be explained only by the direct action of an intelligent cause," — and all special difficulty in harmonizing a theory of the derivation of species with the doctrine of final causes will vanish. Professor Parsons made a communication upon the general subject. He remarked that : — The new theory rested wholly on the assumption that the changes or variations by which the author supposed that species were estab- lished, were always minute, and effiscted their purpose only by accu- mulation through ages. But Mr. Parsons regarded this as wholly unnecessary. The records of monstrosity show that aberrant variation, in the direction of loss or degradation, may go very far indeed. And we have no reason whatever for holding it to be a law, that aberrant variation may not, possibly, in some instances, go equally far in the direction of gain and improvement. Supposing this to be possible, we reconcile the theories of Darwin and Agassiz. Admitting all the new creations which Agassiz requires, the question then occurs, How- are these creations created? We must choose, either chance, and chance is a word only and not a thing, or creation at once out of noth- ing, by creative will ; or from earth and water and chemical elements summoned to a proper place, at a proper time, in proper proportions, by the same exertion of Omnipotence. One of these we must choose, or else accept the theory that these new creations were created by means of some influence of variation exerted upon the ovum of some existing kindi'ed creature, either before or at conception, or during uterine nutriment. This last supposition Mr. Parsons deemed by far the most reasonable and philosophical. Thus, if we suppose that the time had come for a dog to exist for the first time, and become the father of all dogs, it is far easier to believe that he was born of a wolf, a fox, a hyena, or a jackal, than that he suddenly flashed into exist- 416 PROCEEDINGS OF THE AMERICAN ACADEMY ence out of nothing, or from a few pounds of chemical elements. Mr. Parsons then remarked upon some of the facts in geology that seem to favor this view ; particularly the noticeable circumstance, that, as the great classes of animals succeed each other, they are not separated by periods of nothingness, but lap over each other, and are joined by connecting links. By way of illustration, he referred to trilobites, which run up through all the paleozoic rocks ; and as they are begin- ning to thin out, we have in the old red sandstone the Pterichthys and the Cephalaspis, which was long held to be a trilobite of the genus of Asaphus, until Agassiz determined both to be fishes ; and Mr. Parsons quoted Murchison's statement, that he regarded them both as the con- necting links between the Crustacea and the fishes. So after fishes were well established, we have the Placodus, the Dendrerpeton, and the Archegosaurus, all of which were for some time held by Agassiz to be fishes, but, upon further and final investigation, were determined by him to be reptiles ; and these may therefore be regarded as the connecting links between fishes and reptiles, — between marine animals and land animals. So, the line between the Protozoa and the Pi'oto- phyta is constantly shifting and uncertain. And in the same connec- tion, Mr. Parsons adverted to the singular fact, that man, who begins in the uterus as a nucleated cell, or monad, on his way to birth puts on the traces and characteristic indications of all the great families of animals. Asserting that the time had come when science must either adopt the doctrine of creation out of nothing, or else admit that new ci'eatures may exist as the aberrant ofi^spring of kindred parents, he preferred the latter ; nor did he think that reason or religion would be shocked if science should hereafter declare it probable, that the earliest human beings were not called into existence out of nothing, or directly from the dust of the earth, but were children of Simite nearest in structure to men, and were made, by some influence of variation, to difl^er from their progenitors in having a brain and general structure such, and so formed, that the breath of immortal life could be breatlied into them, and distinguish them for ever from the animals from whom and above whom they had risen. Professor Bowen replied at length to the arguments and criticisms of Professor Gray, but reserves his remarks for publication in another form. OF ARTS AND SCIENCES. 417 Foui' liuiiclred and eiglity-iirst meeting* April 24, 1860. — Special Meeting. The President in the chair. The Corresponding Secretary read letters relative to the exchanges of the Academy. Mr. S. Newcomb read a paper on the secular variations and mutual relations of the orbits of the Asteroids, of which the following is an abstract : — The tests to which it is possible to put any theory respecting the common origin of the asteroids may be divided into two classes. The one is per se demonstrative, and consists in determining by actual trial whether the orbits of the asteroids could ever have fulfilled the condi- tions which may be required by the hypothesis. It may, however, be subject to practical difficulties in its applications, which impair its de- monstrative vigor. Another method is furnished by the method of probabilities, and might, perhaps, if the asteroids were sufficiently numerous, approach very nearly to certainty in its results. It is founded on the suppo- sition, that the hypothesis examined will imply a high probability of some general relationship among the orbits of the asteroids, if the latter are sufficiently numerous; and consisting in observing whether any such relationship is observable between the elements of the asteroids. Take, for example, the hypothesis of Olbers. It seems highly prob- able that, if this hypothesis be true, the fragments of the exploded frag- ment would have been thrown promiscuously in every direction ; and that the velocities of those thrown in one direction would not differ ma- terially from that of those thrown in another. From this hypothesis we easily deduce the following conclusions : — 1. The exploded planet, supposing it to have moved in an orbit with a small eccentricity, was at a distance from the sun about equal to the average distance of the asteroid, or 2.6. 2. The asteroids, of which the mean distance is nearly equal to 2.6, ouo-ht on the whole to have much smaller eccentricities than those at a greater or less distance. 3. The eccentricities ought on the whole to be more than twice as great as the inclinations ; and the average quantity by which the mean VOL. IV. 53 418 PROCEEDINGS OF THE AMERICAN ACADEMY distance difiers from 2.6 should be about 5.2 times the inclination, or 2.4 times the eccentricity. Now, the orbits of the asteroids are very far indeed from fulfilling either of the last two conditions. The mean value of the eccentricities is almost exactly the same as that of the inclinations, and the variations in the mean distances are much less than they ought to be. Again, it would seem highly probable, on Olbers's hypothesis, that the smaller fragments would be projected with greater velocities than the large ones, and would thus be found to have larger eccentricities, inclinations, and ranges of mean distance. Such, however, is not found to be the case. The orbits of the asteroids do not seem to have been materially af- fected by a resisting medium. Such a medium would affect the smaller ones more than the larger, and thus cause the former to approach the sun more rapidly than the larger. But no tendency among the smaller asteroids to be near the sun is observable, other than what proceeds from the less brilliancy (and consequently less susceptibility of discov- ery) of the more distant ones. It has frequently been remarked, that a large majority of the aste- roids have their ascending nodes and perihelia in the first semicircle of longitude. This fact throws no light on the question of their origin, since it is the almost necessary efiect of known causes. The principal cause is the attraction of Jupiter ; and the eflfect may be expressed by saying that there will always be a tendency in the nodes of the aste- roids to comcide with the node of Jupiter, and in the perihelia of the asteroids to coincide with that of Jupiter. It is possible that the hypothesis that the asteroids were formed by the breaking up of a revolving ring of considerable eccentricity and in- clination might account for the general relations of their elements. Dr. I. I. Hayes, of Philadelphia, addressed the Academy, by special invitation, upon the subject of his proposed expedition to the Arctic Seas. He was introduced by Dr. B. A. Gould, who said : — More than eighteen months ago, upon the first announcement by Dr. Hayes of his desire to organize an expedition to the North Polar regions to complete the work of the Grinnell expedition under Dr. Kane, resolutions were unanimously passed by this body, commend- OF ARTS AND SCIENCES. 419 ing his daring and self-sacrificing plans, and ofFering him the sympa- thy and influence of the Academy; appointing at the same time a committee of seven Fellows for the purpose of co-operating with him, and of rendering him scientific aid and counsel. The efforts of Dr. Hayes to obtain the equipment for his expedition last year were unsuc- cessful, and he is now engaged, as the Academy is aware, in renewed efforts to obtain means of conducting a party of exploration to the Arc- tic Pole, and of thus definitely solving the chief geographical problem of our times, — that of the supposed open Polar Sea, its boundaries, approaches, physical characteristics, and the vegetable and animal in- habitants of its shores and waters. It may, I think, safely be said, that the great majority of scientific men believe in the existence of such an open sea around the North Pole, for reasons of various kinds, with which the Academy is familiar, ^- rea- sons derived from the course of the Gulf Stream, from known habits and habitations of the whales, from the form of the isothermal lines, and from various reports of different explorers since 1810. The evidence brought back by Dr. Kane's expedition tended strongly to corroborate this belief in the public mind ; and now, guided by the experience and discoveries of that expedition. Dr. Hayes proposes to aim directly for the Pole, to complete the work so brilliantly begun by the Grinnell ex- pedition, and to secure for our own land the honor which such an enter- prise, successfully conducted, cannot fail to receive. At our last meeting Dr. Hayes was, by a unanimous vote, invited to address the Academy this evening upon the subject so near his heart, and in acceptance of this invitation he is here. He naturally desires to enlist the immediate personal interest of gentlemen present, in behalf of his plans, that their influence may aid him with the community to which he proposes to appeal for help. Of the feasibility of the exploration, of the extent to which our pres- ent experience promises to enable us to surmount difficulties hitherto encountered, of the details of the plan which he has so carefully matured for the equipment of a party and the prosecution of his undertaking, Dr. Hayes will speak. But before taking my seat, I beg leave to urge one important consideration upon the notice of the Academy, namely, the great danger that, if the efforts of Dr. Hayes are unsuc- cessful in organizing his expedition during the present season, the opportunity may be lost to our country. The Arctic service is ex- 420 PROCEEDINGS OP THE AMERICAN ACADEMY tremelj popular in the British navy ; a large number of living officers have participated in the searches for Sir John Franklin, and have thus become familiar with the peculiarities of navigation in high latitudes ; and at this very time efforts are making on the other side of the Atlan- tic for exploring these untraversed regions of our own hemisphere. If this expedition be not equipped at present, there is every reason to be- lieve that a European one, next year, upon a larger scale, will super- sede it ; and that the discoveries and explorations which now reflect such lustre upon the names of Kane and of Grinnell may be thrown into the background by the achievements of those who, while profiting by their experience, may yet overshadow their record. An American expedition ought to be equipped now ; and if equipped, who should lead it but Dr. Hayes ? What other living citizen unites the experience with the knowledge needed for the enterprise ? Those of us who have read his modest narrative of that heroic boat journey towards Upernavik will appreciate that union of chivalry with caution, of daring with dis- cretion, so important for the leader of a hazardous enterprise. They will remember the boldness, the tact, the nerve, and the thoughtfulness which were so conspicuous in that memorable journey. Dr. Hayes comes to us supported by the commendation of the lead- ing institutions and men of science throughout the land, and bringing their earnest desires for his success in carrying out his heroic aims. His hopes now rest upon Boston, and it remains for our own city to say whether he shall lead his daring company northward. Permit me now, Mr. President, to introduce Dr. Isaac I. Hayes, sur- geon of the late Grinnell expedition under Dr. Kane. Dr. Hayes then spoke substantially as follows: — I am highly honored, Mr. President, by the invitation which the Academy has extended to me ; and am greatly gratified at having this opportunity to bring to your notice the plan which I have proposed for continuing the researches of the late Dr. Kane. With Dr. Kane's scheme of exploration you are already quite familiar. It was based upon the idea that the great Arctic ice-belt was more readily traversed through Baffin's Bay and Smith Strait than in any other region. He was arrested by the ice at Rensselaer Harbor, in latitude 78° 37', on the eastern side of Smith Strait. Here he passed the winters of 1853 and 1854. During the summer of 1854 he conducted his explorations OF ARTS AND SCIENCES. 421 over the ice northward, with sledges ; and finally discovered open water north of the ice-belt. This was traced to latitude 81°, and beyond this point no ice was seen. Dr. Kane's position was an unfavorable one, from causes which will be readily perceived, upon a reference to the map. Smith Strait runs in a northeasterly direction, and diago- nally to the general direction of the current which sets south through Kennedy Channel. This current piles the ice upon the Greenland coast, and breaks it into confused ridges ; in consequence of which ob- struction, Dr. Kane's parties were greatly embarrassed in their efforts to surmount these hummocks. I propose to avoid these difficulties by selecting the western shore, where we shall find a protection against the drift-ice ; and, in conse- quence of this protection, hope to attain to a higher latitude than was attained by Dr. Kane on the opposite side. Along this shore I think it not impossible that, under the protection of the land, it will be possi- ble to penetrate into Kennedy Channel, and through this to find a water communication to the Pole. In any case I feel well assured that the parallel of Cape Frazer, lat. 79° 42', can be reached, and here a fine harbor can be secured for wintering. Thence northward the coast presents no salient capes to arrest the ice, and we shall doubtless meet a favorable field for our sledge travel. We shall remain mainly inac- tive during the winter ; but before the earhest return of sunlight in the spring we will push forward our provision depots with dog-sledges, and early in April a boat mounted upon runners will be started. With this equipment we can continue to move northward until we have met the object of our search, when, if such fortune awaits us, we will launch our little vessel and push oflT directly for the Pole. That we shall meet the open water, I have no doubt. It may not be found as far south as when discovered by Dr. Kane, (namely, lat. 80° 20',) for we shall be nearly two months earlier in the season ; but we can readily convey our full equipment over the ice, in the manner already described, as far as latitude 83°, when we shall probably be obliged to await the disruption of the ice. While these operations are going on, I shall, if found practicable, dispatch parties to the eastward and westward, with the view of com- pleting the survey of the northern coasts of Greenland and Grinnell Land. The region covered by these several parties will be a most important one for scientific surveys. I need not in this presume to 422 PROCEEDINGS OF THE AMERICAN ACADEMY dwell upon the vast importance of the observations which may there be collected, upon the magnetism, meteorology, natural history, and general physics of the globe. The ditficulties which will be encountered are far less than those which have attended Arctic exploration in former years. The expe- rience of the English and American explorers during the last twelve years, while prosecuting the search for Sir John Franklin, has reduced Arctic travel almost to a science. The dogs are a powerful auxiliary, and, by using them almost wholly for draught, I shall be obliged to take only a small number of men. The ice which embarrassed Dr. Kane is readily avoided by avoiding the crossing of Smith Strait. The cold is no longer an obstacle to successful travel. The scurvy, hitherto a great scourge to crews of vessels wintering in the Arctic Seas, is now readily resisted, by the abundant use of such food as can now be readily obtained and preserved quite fresh. From this disease and from all other causes combined, the mortality on board of the ves- sels which have gone in search of Franklin, during the past twelve years, has been less than three per cent of the whole number of per- sons engaged. In concluding, Dr. Hayes thanked the Academy for the courteous hearing which they had given him. Professor Agassiz expressed himself warmly in favor of the enterprise. It would, if successful, bring to us data which were much needed in almost every department of science. Everything seemed to indicate the existence of an open Polar Sea. The Gulf Stream flowing northward beyond Spitz- bergen would carry warm water into the Arctic Basin, and there was every reason to suppose that the bed of the ocean was much depressed in the region of the Pole, and that the existence of land in that quarter was counter-indicated. If there is no land there, it is not probable that there is much ice. In support of his view, that at the centre of the Arctic Ocean the water is very deep. Professor Agassiz called the attention of the Academy to the fact, that the lands invest- ing it are found to descend rapidly from the crests of the great mountain ridges of the northern hemisphere, in both its eastern and western divisions. OF ARTS AND SCIENCES. 423 If Dr. Hayes could make in those high northern latitudes collections of the lower forms of animal life, they would have exceedingly great value. Indeed, there is scarcely any quar- ter of the world that would yield richer results to an earnest naturalist. Professor Agassiz regarded the question as in a certain sense an American one, and thought that since an American, Dr. Kane, had been the first to penetrate to the Polar Sea through Smith Strait, it is the duty of Americans to carry on the work. Professor Lovering, chairman of the special committee appointed in October, 1858, for the purpose of co-operating with Dr. Hayes, stated that three vacancies had occurred in the committee by death or removal from the State, and moved that these be filled by the chair. This having been done, the committee was announced to consist of the follow- ing gentlemen : — Prof. Joseph Lovering, Prof. H. L. Eustis, Hon. Nathan Appleton, Dr. B. A. Gould, and Prof. Theophilus Parsons, Theodore Lyman, Esq. Edward Wiggles worth, Esq., Professor Lovering then offered the following resolutions, which w^ere unanimously adopted : — Resolved, That the Academy has heard, with gi-eat interest and satisfaction, the development and explanation by Dr. Hayes of his plans for a continuance of the explorations commenced by Dr. Kane, and takes this occasion to renew the expression of its approval and sympathy. Resolved, That the Academy commends the enterprise proposed by Dr. Hayes to the favor and support of the American people, and most cordially joins in the commendation bestowed upon it by other institu- tions of science throughout the country. Resolved, That the committee, hereafter appointed to co-operate with Dr. Hayes, be authorized to take such action as they may deem expedient for promoting the interests of the proposed expedition, and 424 PROCEEDINGS OF THE AMERICAN ACADEMY that they be requested to co-operate with any other committees ap- pointed for a similar purpose. Professor Agassiz mentioned the fact that Smelts ( Osmenis viridescens) were about sixty years ago introduced into Ja- maica Pond, and that they still exist there in a thriving con- dition. A desultory discussion ensued upon some questions rela- tive to the inheritance of acquired habits, and the reversion of feral animals to the original state, in which Professors Bowen, Agassiz, Wyman, Gray, and Dr. Kneeland took part. On motion of Professor Bowen, it was voted that the spe- cial meeting appointed for the 22d of May be held on Tues- day, the first day of May. Four hundred and eiglity-second meeting. May 1, 1860. — Special Meeting. The Vice-President in the chair. Professor Gray resumed the discussion upon the questions mooted at the preceding meetings, in a rejoinder to Professor Bovven's last remarks. Premising that he had never accepted the Darwinian theory of the origin of the species as anything more than a legitimate hypothesis, just beginning to stand its trial, and that he had been occupied only in the endeavor to expose and rebut what he thought inconclusive or irrelevant arguments here brought against it, Professor Gray defended and illustrated the positions he had before taken. He maintained that no thoughtful theistic philosopher, and least of all, Professor Bowen, could be justified in charging that a theory of the diversification of spe- cies through variation and natural selection was incompatible with final causes or purpose ; that the argument for design from structure and adaptation, in the case of any animal, say a dog, took all its validity from the consideration of the animal itself, wholly irrespective of its origin, — was as valid in the instance of an individual dog produced by OP ARTS AND SCIENCES. 425 natural generation, as it would have been in the case of the first dog if suddenly presented for inspection ; that, if the argument for design is not weakened because our dogs are known to come from similar parent dogs, nor because Newfoundland dogs were dei'ived from mastiffs or some other variety many years ago, neither would it be weakened if both varieties, and many others, came from some species of wolf, as is the prevalent opinion, nor if this wolf were derived from some post- tertiary or tertiary wolf, and this from some earlier one, the remote ancestor of all existing wolves and dogs ; that it is all the same as to the argument for design, this resting on the adaptation of structure to use, irrespective of the particular manner in which the adaptation may be conceived to have been brought about. He also insisted, that no theist is entitled to hold that the so-called accidental element in natural selection negatives design, though it may render it more difficult to prove design in opposition to the atheist ; and he adduced a series of anal- ogies and parallels from the relations of one animal to another and to plants, — from the relations of both to the inorganic world, — from the gradual preparation of the earth's surface, in the theist's view, for man's existence and well-being, — from the evolution of our solar system, and the development of the actual state of our planet, which no one now doubts was a progressive development, while most theists consider the results not only as compatible with design, but as, in the largest sense, designed results, — as all showing that the argument he was opposing, if it proved anything, proved far too much. To the objection, that, while a variation which was an improvement survived through natural selec- tion, a vast number being no improvements, but perhaps the contrary, perished, — that the latter " were therefore useless, if not injurious, therefore without a purpose, without a final cause," — and therefore that the theory negatived design altogether, — Professor Gray replied, that the same might be said of the vast number of rain-drops which were raised from the surface of the ocean only to fall back into it, while a smaller number, wafted inland, supported vegetable and animal life ; and also of the vast proportion of pollen and sperm, which were designed to impregnate ovules and ova, and of seeds, eggs, &c., which, though potential plants and animals, perish undeveloped, and are therefore pur- poseless in the same sense, and only in the same sense, as are the un- improved, unused, or unperpetuated variations referred to. As to the relation of theories of origination to efficient and intelligent VOL. IV. 54 426 PROCEEDINGS OF THE AMERICAN ACADEMY cause, Professor Gray remarked that the question was mainly as to tlie ■way in which we may suppose creative power to be exerted, and upon what exerted, — whether always upon nothing to evoke something into existence, and this repeatedly, when small alterations would make all the difference between successive species. And enumerating the three, and only three, general views of efficient causation which may claim to be both theistic and philosophical ; — viz. : 1. that of its exertion at the beginning of time, endowing created things with blind forces which pro- duce the phenomena ; 2. the same view, with that of insulated interpo- sitions, or occasional direct Divine action, engrafted upon it ; and 3. that of the constant and orderly immediate action of an intelligent cre- ative Cause ; — Professor Gray insisted that Professor Bowen, in adopt- ing the latter view, was precluded from bringing the objections he did against the new theory ; that the difference between Professor Bowen's and Mr. Darwin's view was thereby reduced to this : the one asserts that the origination of an individual, no less than that of a species, requires and presupposes Divine power as its efficient cause ; the other, that the origination of a species is natural, no less than the origination of an individual ; — propositions which do not appear to contradict each other. Professor Gray then entered upon various questions of fact and of detail, and also insisted that, if psychologists w^ould scrutinize facts of observation as they had those of consciousness, they would not confound together all the psychical manifestations of the brute animals as one fac- ulty, but would discriminate (as they largely might) between their in- stinct, which prevails in the lower, and their intelligence, which is mani- fest in the higher animals. In respect to the proper intelligence of the latter, he adduced the very explicit and unqualified published testimony of Agassiz ; and the fact of the heritability both of acquired habits and aptitudes, and of certain modified structures, was supported by additional examples. Professor Bowen replied at length, but furnishes no ab- stract, and the discussion was continued by Professor Agassiz, and others, in incidental remarks. Also in a written note, contributed by Dr. Kneeland, as follows : — At the last meeting of the Academy I stated my impression that Mr. Gordon Gumming, in the chapter referred to by Professor Bowen, OF ARTS AND SCIENCES. 427 as to the barking of the wild dogs in Southern Africa, had intimated that they might be feral dogs, or dogs once domesticated and afterward becoming wild. That I find is not the case ; as in Vol. I. p. 152 (note), he makes no allusion to a feral condition, distinctly calling them " wild dogs." But what is the extent of the argument that can be drawn from his authority as to the fact of wild dogs barking ? In the first place, if it be argued from this that wild dogs bark, the argument would seem to go too far; for the reason that the wild dogs seen by Gumming and other travellers are not what we should call dogs ; in fact. Gumming says (p. 152) that these animals seem "to form the connecting link between the wolf and the hyena ; " this quotation indicates the so- called dogs to belong to the genus Lycaon, like L. venaticus, the hunt- ing hyena, a canine animal, but hardly more a dog than a hyena. He says that these dogs kept up a " chattering and growling," making most unearthly sounds, and barking " something like collies ; " but he does not tell us how nearly this resembled the barking of collies, nor what is the bark of collies. Such indefiniteness of language is very poor proof that his wild dogs barked, in the common acceptation of the term. On another page of the book he is more definite, and says that the voice of these wild dogs consists of three different kinds of cry, each of which is used on special occasions : — first, a sharp, angry hark, uttered when they suddenly behold a strange object; — second, a kind of chattering, hke a number of monkeys, or men conversing when their teeth are chattering violently with cold, emitted at night when excited by any particular occurrence, " such as being barked at by domestic dogs ; " (in regard to this the question arises, if the bark be natural to them, why do they not return the compliment of domestic dogs by harking instead of chattering ?) — and third, the most common, a rallying note to bring the members of the pack together, — soft, melodious, and distinguishable at a great distance, like the second note of the cuckoo. Still, no great proof that these dogs barked, as the term is generally understood. All canines have a natural voice, which may in certain cases resem- ble a short, snapping bark, as in the prairie-wolf, the fox, &c. ; but no one would be likely to confound this with the monotonous, oft-repeated note of the domesticated dog. Though domesticated dogs would be expected to howl like a wolf, or snap like a fox, or utter other natural canine noises, according to their derivation, when terrified or in pain ; we 428 PROCEEDINGS OF THE AMERICAN ACADEMY have no right, on the contrary, to expect, and there is no decided proof that we do find, in wild canines, other than feral dogs, a true bark. The bark is the language of the domesticated dog, and by it he ex- presses the various emotions of joy, anger, fear, or suffering ; and, as in human language, it must have been the work of ages to develop canine education to the point of a domesticated bark. As far as Gumming goes, then, there are no proper wild dogs in Africa, but only jackals, hyenas, and lycaons, which may on rare occa- sions make noises which the vivid imagination of a Gumming might magnify into the bark of a collie. Taking the word harh as we generally understand it, there seems no reason to affirm that wild dogs bark, any more than that wild felines mew; and it must be a very acute sense of hearing that would detect the bark of the dog in the voices of the wolf, fox, and jackal, or the mew of the cat in the growls of the lion "'and tiger. Though it be a difference of degree and not of kind, it is precisely the degree brought about by domestication alone. Even the half-civilized Esquimaux dog does not bark, his education not having reached that degree of refine- ment. Comments were offered by Professors Bowen, Agassiz, Gray, and others. The subjoined abstract of Mr. J. A. Lowell's remarks be- long to a preceding meeting, and should have been introduced on page 410. Mr. Lowell said that the book* recently published by Mr. Darwin on the origin of species had deservedly attracted great attention, both in this country and in Europe. It is written with admirable candor, and rests on an ample and patiently accumulated collection of facts. Had the author, however, confined himself to the subject indicated in his title-page, his work would scarcely have inspired such universal inter- est. It is because he has unfolded a new theory of creation, that his views are espoused or combated with so much zeal. His facts are ap- parently, for the most part, uncontroverted ; and it is precisely this admission of the facts that takes the inquiry from the exclusive domain of science, and opens it to all who are qualified to examine it merely as a deduction from acknowledged premises. The argument may be summed up in this : — OF ARTS AND SCIENCES. 429 1. The intervention of man has produced, by careful and continued selection, very remarkable changes in races both of domestic animals and plants. 2. Nature constantly produces varieties. Therefore, 3. Nature, which commands indefinite periods of time, may, by seiz- ing accidental varieties in which some peculiarity appears favorable to the individual in the great struggle for life, so extend and improve this peculiarity as gradually to evolve new and more gifted species. It was clear that he could not logically stop here, and he does not shrink from the conclusion, that in like manner genera have been evolved from species, orders from genera, and so on, until at last you come back to one original pair, progenitors of all the visible animated creation. To this reasoning Mr. Lowell objected : — 1. That man acts with means of seclusion that Nature does not possess, and that accordingly varieties always tend to return to the origi- nal type, instead of diverging from it. 2. That the changes produced by human agency are all within spe- cijic limits ; that is, that the operation consists in developing certain observed tendencies, and discouraging others ; but that there is not the slightest approach towards generic changes. The most improved South- down ram, or Ayrshire bull, is but a ram or a bull after all. You can- not, therefore, reason from this analogy, whatever time be assumed, to any changes differing in kind from specific changes. 3. The theory rests entirely on the second proposition, that Nature is constantly producing varieties. Mr. Darwin must therefore be held to strict proof of this. The existence of varieties in the animal king- dom is denied by very high authority. As to the vegetable kingdom, so long as botanists took it for granted that all hermaphrodite plants were self-fertilized, every departure from the normal type was of course a variety. But Mr. Darwin has shown by numerous instances that fertilization is constantly occurring by the intervention of insects, who transport to one flower the pollen of another, and that this occurs not only between plants of the same species, but also between those of dif- ferent species. He even doubts whether any species can be long main- tained by self-fertilization alone. Such being the case, it becomes a legitimate subject of inquiry whether all the so-called varieties are not produced by hybridization. We know that, in crossing breeds, one off- spring will resemble one parent, one the other, and others have a type 430 PROCEEDINGS OF THE AMERICAN ACADEMY intermediate between the two. May not all the forms which seem to link one species with another be explained on the same principle ? 4. The use of the word accidetital in this connection is not warrant- able. For the question will resolve itself at last into a question of de- sign, and the use of this word is therefore a begging of the matter at issue. 5. If geological investigations showed an ascending series, while the lower forms wei'e extinguished, there might be some ground for this theory ; though even then it might be difficult to conceive why in all cases the intermediate forms were wanting in the great record. But forms of the lowest type are as frequent now as ever ; the Lingula lives at the present day in perfect harmony with the Clam, which should have superseded it. 6. The word indefinite, as applied to time, has no clear meaning to distinguish it from infinite. A million or ten millions of years would not be an indefinite period. Now we know some of the properties of the infinite, as in the case of the summation of series; but the idea of infinity itself we cannot grasp, and we have no right to invoke it in the solution of any finite question. 7. Long as are the periods established by geology, the author is obliged to resort to a much longer time to account for the development of such a curious and exquisite organism as that of the eye from a mere nervous thread accidentally sensitive to light. For in the earliest stratified rocks the Trilobites are already gifted with complex organs of vision, and that comparatively modern animal, the Ichthyosaurus, has an eye that any reptile at the present day might envy. 8. A yet more serious objection lies against the evidently forced and painful attempt to trace the development of reason from the lower forms of animal instinct. With regard to man, so recent has been his intro- duction on the earth, that we might reasonably expect to find the inter- mediate forms which must have existed between him and the anthropoid apes. 9. The whole theory rests on the assumption, that there may be forms more favored and better fitted to succeed in the struggle for life, than those originally created. But is this proved ? Observe, that as fast as any species, by this theory, improves, just so fast its enemies must im- prove also. While Nature avails itself of an accidentally harder pro- boscis, to enable an insect, now become a borer, to lay its eggs within OF ARTS AND SCIENCES. 431 the tree, that the young larvoe may avoid destruction, — the bird, mean- whik^, is by a Hke careful selection, acquiring claws fitted to climb, and a beak fitted to pierce the bark, and so has become a woodpecker. After all the prolonged and patient eflforts of Nature, through countless ages, the relative numbers remain precisely at the point from which they started. Finally, if this theory is true, it should be carried much farther. For why stop at the limits of human vision ? Why at those of the best microscopes ? Why even at those which we may expect the microscope ultimately to attain ? Beyond and below these, there may exist myri- ads of forms, myriads of created organisms, equally entitled, on all prin- ciples of reasoning, to claim that they have been formed in the image of that original pair. Four hundred and eighty-tliird meeting. May 8, 1860. — Monthly Meeting. The President in the chair. Dr. Kneeland, in reference to some criticisms which his communication at the last meeting, upon the barking of dogs, had called forth, remarked, — That, as regards the testimony adduced, which he said was the same as had been extolled on the other side of the question, he had in- troduced the testimony of the same hunter-naturalist, and his only, to show that the wild dogs in question were widely different from the common type of dogs, and that their voice could not be fairly compared to the educated bark of domesticated dogs. As to the occurrence of indigenous wild dogs south of the Equator, he maintained, on the authority of Hamilton Smith and others, that the South American wild dogs are aguara or fox-dogs, and not true dogs ; and also, on the authority of many naturalists, that the South Pacific dogs have been inti'oduced from the Asiatic continent by their Polynesian masters ; that, according to Dr. Pickering, there is prob- ably no aboriginal dog in New Zealand ; that the dogs of the Namaqua region in Southern Africa, on the authority of Anderssen, are half- reclaimed jackals ; and that the Australian dingo, an exception to the zoological character of that region, on the authority of Dr. Carpenter 432 PROCEEDINGS OF THE AMERICAN ACADEMY and others, is more likely to have been introduced from Asia, and to be the progeny of the Indian dhole, (rendered the more probable by the wolf-like characters of the dingo,) than to be the sole indigenous, carnivorous, placental mammal on that continental island. Seeing that it must be a mere matter of opinion, he considered the question of the occurrence of indigenous wild dogs south of the Equator as at best still subjudice. Mr. C. Wright made some remarks on the architecture of bees, in reference to previous discussions upon the instinct of the honey-bee. Mathematicians have regarded the economical characteristics of the honey-cell too exclusively, to the neglect of those symmetries which Maraldi pointed out. The more prominent of these symmetries are the regularity of all the solid angles of the cell, and fhe consequent equality of all the angles made by the sides and rhombs with each other to 1 20°, or to |^ of a right angle. Another important symmetry which follows from these is seen in the position of that point in the axis of the cell which is directly over the middle points of the rhombs ; for this point is at the same distance from all the nine planes of the cell, and just opposite similar points in the nine contiguous cells ; so that little spheres which would just fit the honey-cells Avould, if pressed to the bases of the cells on both sides of the comb, touch the rhombs in their middle points, and the sides in their middle lines, by points in the spheres themselves, at which they would touch each other but for the thickness of the intervening walls. While the common mode of considering the form of the honey-cell regards it as the effect of rational economy, these symmetries show how the cell might be the natural result of simple or sensible economy, as applied to the building of simple nests, the common type of which is a cylindrical cavity with a hemispherical base. The construction of a series of such nests side by side, and with the bases of two opposite se- ries in closest contact, would, by the simple removal of the interstitial material, result in two series of cells like the normal ones of the honey- comb, both in the forms and the arrangement of the sides and bases. Hence, as the bee builds the two series of cells from their common bases, making the incipient depressions on one side form the interstitial eleva- OF ARTS AND SCIENCES. 433 tions around the cavities of the other side, and as it builds by continual trimming and saving, we may infer that the form of the honey-cell does not require, in the bee's instinct, any reference to supersensible prop- erties of form, but only a reference to sensible economy and facility of construction ; especially as no one would contend that the utility, to innumerable nest-building animals, of spherical and cylindrical surfaces, depends upon their economy (which is still greater than that of the honey-cell), rather than upon their far more obvious symmetries and facilities for construction. It appears, therefore, that the instinct of the bee does not differ in kind from instincts in general. Mr. Newcomb discussed the objections raised by Mr. Mill, and others, against Laplace's presentation of the doctrine of probabilities. Many objections have within late years been brought against the fun- damental basis of the theory of probabilities as laid down by Laplace. Some of these proceed from an entire misapprehension of the mathe- matical and logical signification to be attached to the term prohahility ; others from a defect in Laplace's theory considered as a philosophical structure, which, although not necessarily leading to any error in the treatment of any special problem, has nevertheless been adduced as a reason why Laplace fell into the assumed mistakes. However, as it is conducive to sound reasoning to have the fundamental principles of every deductive science laid down with as much logical clearness and accuracy as possible, let us first consider the question, What is proba- bility? The pi-obability of a proposition has sometimes been defined as the amoimt of our belief in the truth of that proposition. Here, however, a difficulty arises from the fact, that neither belief, nor any other affec- tion of the mind, admits of being measured as a quantity. We may apply the terms greater or less to belief, but we cannot say how much greater or less. Nor does this inability proceed from the imperfection of the faculties, as when we experience a difficulty in determining by the feeling whether one weight is twice as heavy as another. It is in- herent in the nature of things. In order that we may say of one thing that it is twice as large as another, we must be able to conceive of it as susceptible of division into two independent parts, or as formed by the superposition of two such parts, each of which can be considered VOL. IV. 55 434 PROCEEDINGS OF THE AMERICAN ACADEMY separately. Now it is obvious that belief cannot be considered as formed by the superposition of several less beliefs. But although belief itself cannot be considered as a quantity, we may submit to mathematical computation those combinations of circum- stances which induce partial belief. The whole mathematical doctrine of probabilities may be considered as founded on the following defini- tion : — If of m events one and one only must occur (or have occurred) ; and if an individual is entirely ignorant of any reason why one of these events should occur rather than another, and if n of these events belong to a class A, then we call the fraction — the prohahility, for the mind of the individual in question, that the event which will occur, or has oc- curred, belongs to the class A. The probability might equally have been expressed by the fraction ; but this would be less conven- ient for mathematical computation, although more in accordance with the language of common life. The solution of every possible mathematical problem in probabilities consists simply in determining, from the conditions of the question, the values of m and m, or rather of their ratio. It will readily be perceived that probability, as thus defined, (and this is equivalent to the usual definition,) is not a quality inherent in the event itself. The latter may be determined by laws as exact as those which regulate the motions of the heavenly bodies. The principle that every event which occurs is the result of law, and neither has or ever had any absolute uncertainty inherent in it, may be regarded as an induction almost as perfect as the laws of motion. Suppose that a die is loaded on one side. As long as we are entirely ignorant of any reason why the load should be on one side rather than another, the probability of any one side turning up will still be ^ by definition. If we found the same side of a die to be thrown four times out of five, we should be disposed to inquire whether the frequency with which it was thrown was the result of chance or of law. Expressed in exact philosophical language, our question should be as follows : — Were these successive sixes the result of separate and independent causes, conditions, or determining reasons ? Or was there a common element in the causes or determining reasons which produced them ? OF ARTS AND SCIENCES. 435 But, it may be asked, is not the shaking of the box by the same indi- vidual in either case a common element in the causes of all the throws ? I answer, that we are not to look for the common element in those causes which are concerned only in producing the whole class of effects, the relationship of which we seek ; but in those additional and unknown circumstances which determine why one of these effects should be produced rather than another. Now, the shaking of the box is supposed simply to cause the result, A side is thrown, while the cause of the side six being thrown may be a loading of the die, or an ability in the thrower to cause what side he pleases to turn up, either of which would be a common cause, acting through the sev- eral throws, and having a special relation to the side six. The proportionate number of times which an event will occur in a great number of times is called by Laplace its facilittj, which word may be defined as follows : — If a constant system of causes is combined within an infinite suc- cession of independent causes ; and if, of the infinite number of effects thus produced, a certain proportion belong to a class A, then is the facility of production of an effect of that class represented by the frac- tion representing the above-mentioned proportion. Or, we might say that the constant system of causes is combined with every possible independent cause, and represents the facility by the fraction expressing the ratio of the effects of the class A to the whole number of effects. We easily see that the facility of an event depends on the constant causes alone. It is therefore the probability of the event to a mind acquainted with all the constant causes, or with the laws of their action. Owing to the complicated manner in which the constant and the va- riable or independent causes are combined, and the general vagueness and difficulty of definition of the former, we can seldom determine with accuracy the facility of an event, except in a few simple mathematical cases. Thus, if we wish to construct a perfect table of mortality, if we select our lives from individuals of nearly the same place and time, the examples will not be sufficiently numerous to assure us that the inde- pendent causes have acted in every possible way ; and if we select them from many countries, and during a long course of time, the cir- cumstances of climate, general external condition, &c., which ought to be constant, will differ with the different individuals. 436 PROCEEDINGS OF THE AMERICAN ACADEMY A few examples may serve to elucidate the above principles. A bag contains black and white balls in an unknown ratio. The probability of drawing a white ball will be one half. But the facility will be represented by the ratio of the white balls to the whole num- ber, supposing them to be mixed indiscriminately, and when this ratio is known, it will also be the probability. So long as the deaths of individuals in any particular country all proceed from independent causes, we expect their number to agree with those deduced from a table of mortality, within certain limits of error. If, however, the country were ravaged by an epidemic, or any change were to take place in its climate, we should no longer expect the deaths to follow the laws of the tables of mortality. Here, how- ever, would be a single cause, producing, or effecting in some way, the deaths of a number of individuals. The neglect of the distinction between probability and facility has never led to any error, (except, perhaps, of interpretation,) because every answer to a question in chances must represent a probability. If we are ignorant of any of the constant causes, we can only deduce the most probable value of the facility, which may not be the real value ; — if we know the law of action of all the constant causes, the probability and facility are the same. Let us now consider a question which has been the subject of some dispute, viz. the nature of the argument by which, from the fact of the near approach of several stars, it is deduced that their proximity is not the result of chance. Writei-s on probabilities have generally agreed that such proximity indicates a physical connection between the stars. The real argument for the connection is to be expressed in the fol- lowing form : — 1. If the causes which fixed the position of each star were entirely independent of those which fixed the position of every other ; or, in other words, if the stars were scattered by chance, it is exceedingly improbable that these (two, three, or seven) stars should be found as near each other as they actually are. 2. It is not very improbable that such proximity should result from the existence of a common element in the causes which determined their positions. 3. Therefore, such proximity being an ascertained fact, it is in the highest degree probable that it resulted from the existence of a com- mon element, etc. OF ARTS AND SCIENCES. 437 This reasoning is logically perfect. The first premise (if I may be allowed to call it so) is proved mathematically ; the second is consid- ered evident, and has seldom or never been expressed by writers on the subject, and the conclusion follows from the obvious principle, that, when compelled to adopt one of two possible suppositions, we select the most probable one. The most elaborate argument in favor of the first premise is that given by Mr. Michell in the Philosophical Transactions for 1767. Professor J. D. Forbes of Edinburgh has taken some exceptions to Michell's methods, and to the general logical accuracy of his method of treatment, besides pointing out one of two mathematical errors in his computations,* in an article in the Philosophical Magazine for Decem- ber, 1850. He raises the following objections: — " FiusT Objection. — The doubt existing in the mind of a reason- able person whether an event still future, and ivhich may happen many ways, shall occur in a particular given way, is erroneously considered as equivalent to an inherent improbability of its happening or having happened in that way" Second Objection. — To assume that every star is as likely, not hypothetically, but actually, to be in one situation as another, leads to conclusions obviously at variance with the idea of random or lawless distribution, and is therefore not the expression of that idea. He also negatives the following conclusions, which he conceives must be maintained by Michell's followers : — 1. That there is any calctdable probability, such as 9570 to 1, against the observed occurrence of tAvo stars out of more than 1000 within 4" of one another having been for- tuitous. 2. That the fact of two stars being seen within an infinitely small distance of each other amounts to a mathematical proof of the certainty of their being physically connected. 3. That were the stars uniformly spaced over the heavens, or arranged with perfect symmetry, no argument could be alleged against such arrangement being the re- sult of chance, but any deviation from symmetry would raise such an argument. With regard to the first objection it may be remarked, that, except the word inherent, what Professor Forbes objects to is equivalent to the very mathematical definition of the word probability. It seems likely that he uses the word in that sentence to express the idea or entity * Neither of these errors affects the general character of the result. 438 PROCEEDINGS OF THE AMERICAN ACADExMY which I have called facility ; if so, the objection is well taken against the general principle. It does not, however, affect Micliell's result. The second objection is also aimed at what seems to me not only a mathematical, but a common-sense definition. If I correctly under- stand it, Professor Forbes attempts to sustain it by showing that it follows from the assumption alluded to in his objection, that a uniform distribution of the stars is that which would be most probable as the result of random scattering. This is true, but the most jjrobahle result of a trial may be almost infinitely improbable. We shall consider this more fully hereafter. In the first conclusion denied by Professor Forbes, it is not made clear whether is meant (I.) the a priori probability that such an event would occur as the result of chance ; or (2.) the a posteriori probability that, having occurred, it was the result of chance ; or between the first and third propositions in the method of reasoning cited above. Let p be the a priori probability of the first proposition, I the a priori prob- ability that the resulting pi'oposition would result from some law, or of the second proposition. Then by the fundamental theorem of the prob- abilities of causes, the probability that the observed contiguity is the result of law is - — —-j, and the probability that it is the result of chance is .-J—- Now, as above remarked, it is tacitly assumed by nearly all writers, that I, though a small fraction, is very great compared with p. Now p is, to a certain extent, capable of being expressed in exact num- bers, but I is not ; therefore r-i — is not. Professor Forbes is therefore l-\-p correct if he refers to the second of the above meanings, as was re- marked by Professor Boole in a subsequent number of the Philosoph- ical Journal. At the same time, however, we may, by the aid of nu- merical calculation, make an approximate estimate of the probability of the proposition used in its second meaning. The second proposition is a demonstrable mathematical certainty, un- less it be held that it is infinitely imjyrobable that two stars should be infinitely near as the result of law, which I apprehend no one will maintain. In fact, p will become infinitely small, while I remains finite, SO that ,—, — will become infinitely small. The third proposition does not follow at all from Michell's argument. A certain calculable amount of irregularity, or grouping, is to be ex- pected as the result of a random distribution. If the amount of group- OF ARTS AND SCIENCES. 439 ing is much greater than this, it indicates that the components of each group were together in consequence of some common cause determining them to nearly the same position. Vice versa, if the stars are equally spaced over the heavens, it would indicate that some constant cause had operated, tending to prevent them from occupying positions near each other. Law and chance are not necessarily the antithesis of each other in the mathematical expression of their effects. Law is indicated by a deviation from what ought to he the results of chance, in whatever di- rection this deviation may be. Let us in this connection return to the second objection of Professor Forbes, to see in what sense a uniform distribution is the most probable result of chance. It is so only when, supposing the heavens to be di- vided into a given number of equal spaces, we are required to specify exactly how many stars each sjjecial division contains. Suppose the heavens to be divided into 100 portions, and 200 stars to be distributed at random ; then, if a person is required to guess how many stars the first space contains, how many the second contains, and so on to the hundredth, he ought to guess two for each space. Yet the chances are millions to one against the correctness of such a guess ; but they would be still greater were he to guess differently. But suppose he were simply required to guess how many spaces contained no stars, how many contained one, &c., without specifying the particular spaces which con- tained the several numbers. Theory shows that, in the case supposed, the probability that a space selected at random contains n stars is very nearly —r—^, e being the Neperian base. The individual ought, there- n ! e' fore, to guess that 14 spaces were devoid of stars, 27 spaces contained 1 star each, 27 " " 2 " 18 " " 3 « 9 « « 4 " 4 " "5 " 1 " "6 stars. This guess, however, would include a number of guesses of the first class, equal to the number of possible permutations of 100 things, 14 of which were of one class, 27 of another, &c., to express which num- ber would require ninety-seveii significant figures. Yet the guess would in all probability be wrong in some respects, although there is no rea- sonable probability that it would differ much from the truth. 440 PROCEEDINGS OF THE AMERICAN ACADEMY As another illustration, suppose that a die, of which four sides are white, is thrown thirty times. If the die is fair, white every time is evidently more probable than any other system of throws, supposing that in specifying the system we state what color is thrown on each spe- cific trial. Yet such a result would prove beyond all reasonable doubt that the die was not fair. This statement will not appear paradoxical, if we consider that a constant series of throws of one color would 7iot be very improbable on the supposition that the die was loaded, while they would be very improbable on the supposition that the die was fair. "We therefore select the most probable series of circumstances, and say that the die is not fair. If an indiscriminate series of white and black throws result, the former being about twice as numerous as the latter, such result, describing what color was thrown on each throw, would be still more improbable than a constant series of whites on the supposition that the die was fair. But the former result would be billions of times less probable than the latter on the supposition that the die was loaded ; so that, if the former result occur, we select the supposition of a fair die as the more probable. It will be perceived that the degree of speciality with which a phe- nomenon is described affects very materially its a priori probability, but the full development of the results of this fact is reserved for a pa- per on the applications of the theory of probabilities to natural phenom- ena. I may remark, however, that much confusion has arisen from confounding the different degrees of probability which a proposition will have when expressed in the different forms, A is X, AisV, A is Z, Sec, when all V is X, all Z is V, &c., but V is an exceeding small portion of X, Z of V, &c. In such a case the a priori probabilities of the suc- cessive propositions will diminish with great rapidity. If, in the case of the above-mentioned die, supposed fair, one were to guess that the 2d, 5th, 8th, Sec. throws would be black, and all the rest white, he would be 1024 times more likely to be wrong than if he guessed that they would all be white. But if he guessed simply that twenty throws would be white, and ten black, which guess would include the former, he would be myriads of times more likely to be right than if he guessed that they would all be white. OF ARTS AND SCIENCES. 441 Professor Peirce made a communication upon the grounds of the probability of intermercurial planets, and upon polar forces. Professor Agassiz gave an account of his recent investi- gations of the structure of the Radiata, and discussed their general homologies in reference to the natural limits of that branch of the animal kingdom. He proceeded to a compari- son of their special homologies, and concluded that the Radi- ata embrace only three distinct classes, the Polyps, the Aca- lephs, and the Echinoderms ; that the Hydroids are genuine Acalephs, as well as the Ctenophoras, and that the Siphuncu- loids must be excluded from the type of Radiata. An oral communication was received from a delegation from a committee of citizens engaged in promoting the con- templated expedition of Dr. Hayes to the Arctic regions, and the influence and good offices of the individual members of the Academy were solicited in its favor. VOI-. IV. 56 INDEX TO VOL. IV. A. Acrocrinus Shuraardi, 283. urn?eformis, 283. Actinocrinus abnormis, 283. fequalis, 283. biturbinatus, 283. brevicornis, 283. brevis, 283. cfelatus, 283. Chrystyi, 283. concinnus, 283. corniculus, 283. cornigerus, 283. discoideus, 283. (Bato) eikosiadactylus, 283. Gouldi, 283. (Bato) irregularis, 284. Konincki, 284. longirostris, 284. Lowei, 284. minor, 284. Missouriensis, 284. multiradiatus, 284. multibrachiatus, 284. (Dorycrinus) Mississippiensis, 284. Nashvillia;, 284. ornatus, 284. parvus, 284. })entagonus, 284. pernodosus, 284. pluraosus, 284. proboscidalis, 285. pyramidatus, 285. pyriformis, 285. ratnulosus, 285. Actinocrinus rotundus, 285. sculptus, 285. subaculeatus, 285. superlatus, 285. symmetricus, 285. tenuiradiatus, 285. tricornis, 285. trinodus, 285. turbinatus, 285. umbrosus, 285. unicornis, 285. ventricosus, 285. verrucosus, 286. Verneuilianus, 286. Yandelli, 286. Adiantum monochlamys, 110. ^cidium Capense, 127. Agaricocrinites buUatus, 286. stellatus, 286. tuberosus, 286. Whitfieldi, 286. Wortbeni, 286. Agaricus alopecius, 115. adianticeps, 112. alphitophyllus, 112. arenulosus, 115. asotus, 117. auctus. 111. Behringensis, 114. Cacao, 117. Californiensis, 112. chffitodes, 113. chlorophos, 113. cladophyllus, 113. connatus, 115. cyanophos, 113. 444 INDEX. Agariciis depravatus, 111. dicranophyllus, 113. efflorescens, 112. Ephippium, 114. flavo-livens, 117. fusco-niveus, 118. glauci-bru linens, 116. hasmatites, 117. hemileucns, 113. hemisoodes, 111. holocirrhus, 116. Japonicus, 116. leiophyllus, 115. leucochrysos, 117. leucoconis, 113. liratus, 116. lividulus, 115. microspilus, 115. Nocotiana, 116. On?iraae, 114. palraicola, 112. palmularis, 117. periporphyrus, 111. pityrodes, 114. plnmbarius, 114. poigenus, 112. porphyromiges, 114. porphyrophyllns, 118. primipilus, 117. prometheus, 115. rliodoconis, 113. ruficeps, 114. scyinnodes, 117. sqnamnla, 115. stellulatus, 116. talpinus, 112. tympaniticus, 111. uber, 117. usta, 114. virescens, 116. venifer, 116. Agassiz, Communications from, 8, 17, 19, 108, 138, 194, 326, 353, 359, 362, 410, 422, 424, 426, 441. Agassizocrinus conicus, 286. constrictus, 286. dactyliformis, 286. gibbosus, 286. Agelacrinus Dicksoni, 287. Hamiltonensis, 287. Kaskaskiensis, 287. Alaria pinnatifida^ 329. Algffi, Characters of New, 248, 327. Amygdalocystites florealis, 287. tenuistriatus, 287. radiatus, 287. Ancistrophora, 201. Andersson, N. J., Salices, 50. Animal Kingdom, Classification of the, 194. Apiocystites elegans, 287. Apocopis Wrightii, 363. Appropriations for Library, 93, 1 36. for Meteorology, 93. for Publications, 93, 106. Arcbeocidaris aculeatus, 287. Agassizi, 287. biangulatus, 287. Keokuki, 287. megastylus, 287. Norwood!, 287. Shumardiana, 287. Vermiliana, 288. Wortheni, 288. Architecture of Bees, 432. Arctic Expedition of Dr. Playes, 103, 418, 420. Aristida Chinensis, 363. Arsenious Acid, Antidote for, 96. Ascorayces deformans, 130. Associate Fellows deceased, 226. Associate Fellows elected : — Arnold, Samuel G., 336. Hunt, Edward B., 336. Logan, William E., 135. Ravenel, St. Julien, 7. Robinson, Edward, 7. Swallow, George C, 336. Asterias antiqua, 288. antiquata, 288. matutina, 288. sp. indet., 288. Asterina buUata, 129. congregata, 129. raegalospora, 129. ostiolata, 129. sepulta, 129. INDEX. 115 Asterlna velutina, 129. Asterocrinus, 288. Asteroids, On the Secular Varia- tions and Mutual Relations of the Orbits of, 417. Astrocrinites pachydactylus, 288. Astronomical Cosmology, Laws of, 305. Astronomical Observers, On the Personal Peculiarities of, 197. Astylocrinus, 285. Ateleocystites Huxleyi, 288. Athyrium cystopteroides, 110. Aurora Borealis, Secular Periodi- city of, 324. B. Badusa corymbifera, 308. Bailey, Pkof., Obituary Notice of, 2. Bartramia inserta, 279. Batocrmus, 288. Beck,'Dr., Communication from, 305. Bees, Architecture of, 432. Berghausia mutica, 362. patula, 362. Berkeley, M. J., Communication from, 111. Bikkia grandiflora, 307. Bobea brevipes, 36. elatior, 36. Bolbilius Oryzffi, 118. Boletus rhodomyces, 122. Bond, G.P., Communications from, 100, 352, 373. Bond, William Cranch, Obitu- ary Notice of, 1 63. Bornite, Analysis of, 196. Botany of Japan, 130. Bout WELL, George S., Commu- nication from, 100. Bovista delicata, 124. Bowen, Prof., Communications from, 410, 416, 426. Brewer, T. M., Communication from, 18. Broavn, Robert, Obituary Notice of, 229. Bryum crudoides, 278. humidulum, 278. megalodictyon, 279. Wrightii, 278. c. Calycosia, 47. Milnei, 307. petiolata, 48. sessilis, 48. Carapsotrichum circinatum, 127. Cantharellus Behringensis, 119. nivosus, 119. Canthium sessilifolium, 39. Cary, T. G., Communication from, 13. Caryocrinus ornatus, 288. Casseday, S. a., Communication from, 282. Cast-Iron Pillars, On the Strength of, 366. Caulacanthus compressus, 331. Caulerpa Amicorum, 333. brachypus, 333. Channing, W. F., Communica- tions from, 11, 20, 31, 79, 97. Chasalia Amicorum, 43. pyriformis, 44. Chomelia? Sandwicensis, 30. Chondria crassicaulis, 330. Chromium in Presence of Iron, On the Detection of, 338. Chroolepus Chinensis, 335. Cladophora densa, 334. fastigiata, 334. oligoclada, 334. polaris, 334. Stirapsoni, 334. uncinella, 334. Wrightiana, 333. Cladosporium pallidum, 127. Clark, H. J., Communications from, 136, 199, 207. Clavaria decolor, 124. Cleveland, Prof., Obituary No- tice of, 226. Closterocrinus elongatus, 288. Codaster alternatus, 289. 446 INDEX. Codaster Americanus, 289. Kentuckiensis, 289. pyramidatus, 289. Comarocystites punctatus, 289. Comet, Tail of Donati's, 202. Cooke, Prof., Communications from, 94, 352. Copper and Zinc, Memoir on the Alloys of, 338. Coprinus modestus, 118. subglobatus, 118. Coprosma, 48. calycina, 306. ernodeoides, 49. foliosa, 48. longifolia, 48. Menziesii, 49. persicfefolia, 50. pubens, 49. rhynchocarpa, 48. Coptic Alphabet, 190. Corticium aschistum, 123. irrigatum, 123. rimosissimum, 124. Cortinarius Wrightii, 118. Costaria Tiirneri, 329. Couthovia corynocarpa, 324. Council, Report from, 92, 226. Craterellus aureus, 123. Crawford, Thomas, Obituary Notice of, 9. Cromia, 202. Crust of Earth, Thickness of, 28. Curtis, M. A., Communication from, 111. Cyathocrinus bullatus, 289. cornutus, 289. divaricatus, 289. florealis, 289. grauliferus, 289. intermedins, 289. lowensis, 289. magister, 289. malvaceus, 289. maniformis, 289. peutalobus, 289. protuberans, 290. pyriformis, 290. ramosus, 290. Cyathocrinus rotundatus, 290. spurius, 290. stellatus, 290. tumidus, 290. Cyclocystoides Davisi, 290. Halli, 290. Cyphella epileuca, 124. Cystophyllum fusiform'e, 329. Cystotheca "Wrightii, 130. D. Dendrocrinus longidactylus, 290. Desmia Japonica, 331. Diatrype catervaria, 128. Dichocrinus cornigerus, 290. ovatus, 290. protuberans, 290. sexlobatus, 290. simplex, 291. striatus, 291. Dicranella obscura, 277. Dictyota obtusangula, 329. Discosia ostiolata, 125. Dogs, On the Barking of, 426,431. Dolatocrinus lacus, 291. Dolicholobium, 308. latifolium, 309. oblongifolium, 309. Donati's Comet, 100. Tail of, 202. Dorycrinus, 291. Dothidea inclusa, 129. permeans, 129. platyplaca, 129. tenuis, 129. Du Chaillu, Mr., Communication from, 411. E. Eaton, Daniel C, Communica- tion from, 110. Echinodermata of the Palaiozoic Rocks of North America, List of, 282. Echinoencrinites anatiformis, 291. Echinosphoerites, 291. Ecklonia Wrightii, 329. INDEX. 447 Edrioaster Bigsbyi, 291. Elfecrinus, 291. Eleutherocrinus Cassedayi, 291. Elliott, C. B., Communication from, 349. Endocladia complanata, 333. Enteromorpha CEerulescens, 333. Eucalyptocrinus caelatus, 291. decorus, 291. papulosus, 291. Eurypterus, 353. EusTis, Prof. H. L., Communi- cation from, 106. Expedition to the Arctic Seas, On the proposed, 418, 420. F. Fagrsea gracilipes, 323. Fellows deceased, 1, 93, 149, 163, 226. Fellows elected : — Andrews, William T., 7. Bell, Luther V., 106. Bryant, Henry, 93. Clark, Thomas Edwards, 93. Clifford, John Henry, 248. Ehot, Charles W., 7. Elliott, Ezekiel Brown, 7. EUis, Calvin, 336. Farmer, Moses G., 2. Goodwin, Wm. Watson, 130. Lyman, Theodore, 336. Newcomb, Simon, 362. Peirce, Benjamin, 107. Putnam, Dr. Charles G., 2. Ritchie, E. S., 336. Robbins, Chandler, 107. Runkle, John D., 2. Storer, Frank H. 7. Storer, Horatio R., 93. Washburn, Emory, 248. Weinland, David, 2. . Wright, Chauncy, 362. Felton, C. C, Communications from, 5, 9, 23, 31, 103, 106, 180, 219, 324, 409. Filices, Character of New, 110. Fishes, Classification of, 8, 108. Fissidens incrassatus, 276. laxus, 276. pungens, 276. Forestiera, Revision of, 363. acuminata, 363. ligustriua, 364. porulosa, 365. reticulata, 365. sphterocarpa, 365. FOLSOM, C, Communications from, 20, 28, 79, 190, 208, 360. Forbesiocrinus Agassizi, 292. Giddingsii, 292. Meeki, 292. Shumardianus, 292. Whitfieldi, 292. Wortheni, 292. Foreign Honorary Members de- ceased, 1, 226. Foreign Honorary Members elect- ed : — Grimm, J., 2. Lindley, John, 135. Liouville, M., 248. Mitscherlich, 2. Mohl, 2. Valentin, Gabriel, 355. Frozen Well of Brandon, Vermont, Results of the Examination of, 269. Fucus Babingtonii, 329. Wrightii, 329. Fungi, New, 111. G. Galaxaura distenta, 331. Geaster biplicatus, 124. papyraceus, 124. Generation, Apparent Equivocal, 207. Geniostoma astylum, 321. ligustrifolium, 321. rupestre, 321. Gigartina affinis, 332. lancifolia, 332. tenella, 332. Gloiopeltis colifoi'mis, 332. Glyptocrinus decodactylus, 292. 448 INDEX. Glyptocrinus fimbriatus, 292. plumosus, 292. Gljptocystites multiporus, 292. Logan i, 292. Forbesi, 292. Glyptoraster brachiatus, 292. Goniaster, 292. Gould, A. A., Communications from, 100, 195, 201, 206. Gould, B. A., Communications from, 189, 305, 325, 418. Gouldia Romanzoviensis, 310. Sandwicensis, 310. Gracilaria eucheumioides, 331. gigas, 331. Granite, Use of as a Building Ma- terial, 353. Graphioerinus 14-brachialis, 293. Grasses, Charactei's of some New Species, 362. Gray, Asa, Communications from, 2, 21, 33, 98, 99, 102, 109, 131, 171, 195, 201, 248, 275, 282, 306, 318, 326, 362, 383, 411, 424. Greek Language, Modern, 219. Greek Pronunciation, 180. Guettardefc, 33, 38. Gymnogongrus ligulatus, 332. H. Halicoryne Wrightii, 333. Hall, James, Communication from, 353. Halosaccion intestinalis, 332. Japonicum, 332. Wrightii, 332. Hates, A. A., Communications from, 19, 28. Hates, Dr. L L, Communication from, 420. Letter from, 97. Proposed Arctic Expedition of, 103. Hclicoma fasciculatum, 127. Helvella pusilla, 127. Hemicystites parasitica, 293. Henck, J. B., Communication from, 28. Hepaticte, 248. Heterocrinus gracilis, 293. heterodactylus, 293. simplex, 293. Heterocystites armatus, 293. Hexagonia Thwaitesii, 122. variegata, 122. Hiatula Boninensis, 118. gracilis, 118. luteola, 118. nivosa, 118. Holmes, Dr., Communication from, 373. Homocrinus cylindricus, 293. parvus, 293. polydactylus, 293. Hookeria Wrightii, 282. HoRSFORD, Prof., Communica- tions from, 7, 8, 12, 28, 100, 360, 411. Houstonia, 312, 313. cterulea, 313. humifusa, 314. minima, 314. patens, 314. rotundifolia, 313. rubra, 314. serpyllifolia, 313. subviscosa, 314. Humboldt, Obituary Notice of, 232, 234. Hydnophytum longifolium, 42. Hydnum Wrightii, 122. stalagmodes, 123. Hygrophorus pictus, 119. Hypereides, Portions of the Lost Works of, 409. Hymenula atrovirens, 124. Hypnum assurgens, 279. dispersum, 279. erectiusculum, 281. eximium, 281. flaccidum, 280. macrostegium, 280. oblongifoliura, 279. Ometepense, 281. pohlia3carpum, 280. INDEX. 449 Hypnum Eodgersianum, 281. Simodense, 280. Smallii, 281. spinulosum, 280. subalbidum, 281. thelidictyon, 280. Hypocrea ai'meniaca, 128. Ichthyocrinus Burlingtonensis, 293. Clintonensis, 293. laevis, 293. tiarteformis, 293. Individuality, Question of, 17. Ischa^mum leersioides, 363. ophiouroides, 363. Ixora amplifolia, 40. eriantha, 40. Saraoensis, 40. Vitiensis, 40. IxorejE, 39. Jackson, Dr. Charles T., Com- munications from, 5, 100, 192, 196, 197, 199, 359. Jackson, J. B. S., Communications from, 102, 337. Japan, Illustrations of the Botany of, 130. Jenks, Dr., Communication from, 337. Johnson, Manuel J., Resolutions in reference to decease of, 206. Obituary Notice of, 228. Jupiter, On the Light of, compared with the Sun, 373. K Kadua, 317. acuminata, 318. centranthoides, 317. Cookiana, 317. cordata, 317. glaucifolia, 318. glomerata, 317. VOL. IV. 57 . Kadua grandis, 318. Menziesiana, 318. parvula, 317. petiolata, 318. Kneeland, Dr. S. S., Communi- cations from, 7, 426, 431. Labordea, 321. fagrjeoidea, 323. sessilis, 323. tinifolia, 322. Lactarius lividatus, 119. Language, Modern Greek, 219. Laschia peziza^formis, 123. Lastrea lacera, 110. Lecanocrinus caliculus, 294. macropetalus, 294. ornatus, 294. simplex, 294. Lecidea Africana, 406. microps, 405. oidalea, 405. Lecythea peziza^foi'mis, 127. Lentinus Nicaraguensis, 121. pyramidatus, 121. Lenzites Japonica, 121. Lepocrinites Gebhardi, 294. Leptogium dactylinum, 383. Leptopetakim Mexicanum, 315. Lerchea calycina, 311. Lesqueredx, Leo, Communica- tion from, 275. Letters received, 5, 6, 7, 8, 19, 20, 21, 31, 78, 95, 103, 107, 130, 135, 149, 180, 192, 202, 206, 225, 269, 305, 324, 335, 349, 359, 362, 366, 383, 417. Leucobryum Boninense, 277. Library, Donations to, by Academia Naturae Curioso- rum, 256. Academic des Sciences de rinstitut Imp. de France, 86, 252. Academy, Imperial, des Sci- ences, Arts, et Belles-Let- tres, Caen, 262. 450 INDEX. Library, Donations to, by Academy, Imperial, des Sci- ences, Belles-Lettres, et Arts, Lyons, 256. Academy, Imperial, of Sci- ences, St. Petersburg, 81, 255. Academy, Imperial, of Sci- ences, Vienna, 84, 249. Academy of Natural Sciences, Philadelphia, 85, 257. Academy des Sciences, Arts, et Belles-Lettres, Dijon, 249. Academy of Science, St.Louis, Missouri, 257. Academy, Royal Bavarian, 81, 255. Academy, Royal Danish, 249. Academy, Royal Irish, 251. Academy, Royal, of Sciences, Amsterdam, 81, 251. Academy, Royal, of Sciences, &c., Belgium, 88, 264. Academy, Royal Prussian, 86, 255. Academy, Royal, of Sciences, Stockholm, 90. Academy, Royal, of Sciences, Turin, 87, 262. Adams, Charles Francis, 84. Adler, a J., 92. Alvord, Major Benjamin, 83. Appleton, Nathan, 90, 262. Argelander, Fr., 92. Association, American, for the Advancement of Science, 80, 266. Association, British, for the Advancement of Science, 91, 262. Association for Natural Sci- ences, Nassau, 91. Association, Mercantile Li- brary, of the City of Bos- ton, 86. Association, Mercantile Li- brary, of the City of New York, 86, 258. Library, Donations to, by Association, Zoological and Botanical, at Vienna, 90, 265. Athenjeum, Salem, 257. Barnard, Charles F., 82, 254. Beke, Charles T., 90. Bologna, City of, 267. Bopp, Franz, 91. Boston, City of, 257. Bowditch, Henry I., 263. Brown, John Allen, 91. Caldwell, George C, 89. Cauchy, M. le Baron, 86. Chandler, Charles F., 89. Curtis, Josiah, 266. Dalton, John C, 266. Dana, James D., 266. Desor, Edouard, 83. Editors of American Journal of Arts and Sciences, 249. Espy, Prof James P., 258. Fries, Ehas, 257. Fries, Theodorus Magnus, 257. Gilhss, Lieut. J. M., 257. Gould, B. A. Jr., 83, 254. Government, British, 85. Government, Netherlands, 80, 264. Graham, Lieut.-CokJ.D., 254. Gray, Prof. Asa, 257. Hall, Jonathan P., 261. Holmes, Francis S., 91. Holt, Hon. Joseph, 258. Hunt, T. Sterry, 92. Institute, Albany, 91, 258. Institute, Essex, 260, 264. Institute, Imperial Geological, Vienna, 84, 255. Institution for the Blind, Brunswick, 89. Institution, Royal, of Great Britain, 252. Institution, Smithsonian, 86, 262. Jordan, Alexis, 83. Kneeland, Samuel, 88, 257. KupfFer, A. T., 87. Latour, L. A. Iluguet, 82, 260. INDEX. 451 Libraiy, Donations to, by- Lea, Isaac, 83, 265. Library, Astor, Trustees of, 91. Library, New York State, 258. Lyceum of Natural History of New York, 91, 266. Lyceum, Salem, 260. Martins, Dr. C. F. P. von, 260. Massachusetts, State of, 258, 265. Meigs, R. J., 87. Metcalf, Jolm George, 251. Meade, Capt. George G., 267. Mines of Russia, Administra- tion of, 82, 255. Museum of Natural History in Paris, 84,363.^ Nicolson, Samuel, 251. Nodot, L., 249. Observatorio, El Marina de San Fernando, 87, 253. Observatory of Breslau, 250. Observatory of Cambridge, 85, 256. Observatory of Cracow, 263. Observatory of Edinburgh, 252. Observatory of Kiinigsberg, 80, 256. Observatory of Prague, 87, 256. Observatory, Royal, Brussels, 87. Observatory, Washington, 87. Olmsted, Denison, 89. Osborn, A., 265. Page, Com. Thomas J., 87, 258 Parsons, Charles W., 266. Patent-Office, United States, 90. Peters, Dr. C. A. F., 90. Prescott, William H., 263. Quetelet, A., 88, 365. Radcliife Trustees, 262. Redfield, John H., 261. Library, Donations to, by Redfield, ^Y. C, 85. Rhces, William J., 85. Rogers, Prof. William B., 254. Rokitansky, Dr. Carl, 81. Runkle, John D., 87. Scheutz, Edward, 86. Schlechtendal, D. F. L. von, 80, 251. Sharswood, William, 258. Shumard, B. F., 252. ShurtlefF, Dr. N. B., 83. Societe d' Agriculture, Scien- • ces, et Arts, de la Sarthe, 259. Societe Imperiale Zoologique d' Acclimation, 252. Society, American Antiquari- an, 85, 254. Society, American Oriental, 82. Society, American Philosophi- cal, 83, 261. Society, Batavian, of Arts and Sciences, 265. Society, Chicago Historical, 251. Society for the Advancement of Physical Sciences, Fi-ei- burg, Briesgau, 88, 263. Society for the Improvement of Horticulture in the Prus- sian States, 80. Society, Hessian, for Natu- ral History and Medicine, Giessen, 263. Society, Imperial, for the Ac- climation of Animals, 80. Society, Imperial Geographi- cal, Vienna, 360. Society, Imperial Mineralogi- cal, St. Petersburg, 81. Society, Imperial, of Agricul- ture, &c., Lyons, 262. Society, Imperial, of Natu- ralists in Moscow, 82, 256. Society, Imperial, of Natu- ral Sciences, Cherbourg, 249. I 452 INDEX. Library, Donations to, by Society, Imperial, of Sciences, Agriculture, and Arts, Lille, 87. Society of Arts, Manufactures, and Commerce, 84. Society of Geography of Par- is, 86, 252. Society, Linntean, of London, 256. Society, Linnsean, of Lyons, 256. Society, Massachusetts, for Promoting Agriculture, 264. Society, Massachusetts His- torical, 253. Society of Natural History, Boston, 91. Society of Natural History, in Emden, 82, 265. Society of Natural History of Montreal, 252. Society of Natural History of the Prussian Rhineland and Westphalia, 80. Society, New York Historical, 85. Society of Arts, Manufactures, and Commerce, 252. Society of Sciences, Haarlem, 256. Society, Philological, London, 259. Society, Physico - Medical, Wiirtzburg, 91. Society, Royal Bohemian, of Science, 80. Society, Royal, London, 82, 259. Society, Royal, of Northern Antiquaries, 249. Society, Royal, of Sciences, Gottingen, 86, 263. Society, Royal, of Sciences, Leipzig, 81, 255. Society, Royal, of Sciences, Upsal, 81. Society, Zoological, of Lon- don, 90. Library, Donations to, by Suranei', Hon. Charles, 90, 250. Swallow, G. C, 92, 252. Tuttle, David K., 89. University, Royal, of Christi- ana, Norway, 252. University, State, of Michigan, 266. War Department, 263. Wetherell, Charles M., 262. Willard, Samuel, 264. Wilson, Hon. Henry, 257. Winlock, Prof. Joseph, 266. Wright, Elizur, 266. Zantadeschi, Prof. Francesco, 91,267. Licea rubiformis, 125. stipitata, 125. Lichenes, Observations on North American, and some other, 383. Loganiacese, 319. LovERiNG, Prof., Communica- tions from, 6, 12, 32, 79, 100, 103, 324, 336, 338, 423. LovTELT., J. A., Communications from, 410, 428. Lycoperdon Hongkongense, 124. plicatum, 125. purpurascens, 124. Lyngbya atropurpurea, 335. atrovirens, 335. effusa, 335. Lyon, S. S., Communication from, 282. Lyriocrinus dactylus, 294. M. Macromitrium gymnostomum, 278. insularum, 278. Macrostylocrinus ornatus, 294. Magneto-Electricity, Experiments in, 375. Malocystites Bawandi, 294. Murchisoni, 294. Marasmius acicola, 121. acicularis, 120. alphitodes, 120. INDEX. 453 Marasmius alutaceus, 120. cremoriceps, 119. dichrous, 120. exustus, 120. galeatus, 119. glabrescens, 120. luteo-fuscus, 119. luteolus, 119. parvulus, 120. petalinus, 119. sordescens, 120. tener, 121. umbonifer, 120. Marsupiocrinites, 294. Megistocrinus Evansi, 294. latus, 294. Meliola dichotoma, 130. Melocrinites sculptus, 294. Melonites multipora, 295. Menander, Fragment from, 23. Meteorological Observations, Re- port of Committee on, 32. Microscope, on use of, 136. Mnium flagellare, 277. Morinda bucidiefolia, 41. lucida, 41. mollis, 41. myrtifolia, 41. Morindeai, 40. Mosses, 275. MuLLER, Johannes, Obituary No- tice of, 227. MuNRO, William, Communication from, 362. Musci, Characters of New, 248, 275. Myelodactylus brachiatus, 295. convolutus, 295. Myrmecodia imberbis, 42. ^. Neviusia Alabamensis, 99. Newcomb, S., Communications from, 417, 433. Nucleocrinus angularis, 295. elegans, 295. Halli, 295. Verneuili, 295. O. Odonthalia obtusangula, 330. Officers, 3, 94, 247. Oldenlandia, 312, 313. Ophiorhiza laxa, 312. leptantha, 312. peploides, 311. Origin of Species, 410, 411, 415, 424, 426, 428, 431. Orthotrichum Japonicum, 277. Paljeaster Niagarensis, 295. Palseocidaris, 295. PalfEOcystites Chapmani, 295. Dawsoni, 295. tenuiradiatus, 295. Palaeozoic Echinodermata, 283. Palasterina stellata, 296. rugosa, 296. Pentremites bij^yramidalis, 296. cervinus, 296. Cherokeus, 296. conoideus, 296. curtus, 296. decussatus, 296. elongatus, 296. florealis, 296. globosus, 296. Godoni, 296. Grosvenori, 297. granulatus, 297. Codaster, 297. Koninckiana, 297. lanterniformis, 297. lineatus, 297. Melo, 297. Norwoodi, 297. ovalis, 297. obesus, 297. pyriformis, 297. Iio3meri, 298. Reinwardtii, 298. Sayi, 298. stelliformis, 298. subtruncatus, 298. sulcatus, 298. 454 INDEX. Pentremites symmetricus, 298. truncata, 298. Verneuili, 298. Wortheni, 298. Pannaria crossophylla, 404. leucosticta, 404. Panus infundibulum, 121. Papyri, 409. Parpelia chlorochroa, 383. Parsons, Prof., Communication from, 415. Pkirce, Prof., Communications from, 108, 109, 136, 192, 197, 202, 305, 325, 338, 352, 441. Personal Peculiarities of Astro- nomical Observers, 197. Petraster ingidus, 298. Petronius Arbiter, 305. Peziza Boninensis, 127. Hongkongensis, 128. inconspicua, 128. insititia, 127. Japonica, 127. lepida, 127. leucophaja, 128. porphyra, 128. verruculosa, 127. Phoma anguina, 125. Physcia, 384. applanata, 398. aquila, 389. cajsia, 397. candelaria, 387. chrysophthalma, 384. ciliaris, 388. erinacea, 388. euploca, 388. Leana, 394. obscura, 398. parietina, 385. pulverulenta, 389. o>t speciosa, o 90. stellaris, 395. Pickering, Dr., Communications from, 190, 192, 194. Piplilema, 46. Plants and Animals mentioned by Ancient Greek Authors, On Difficulty of Identifying, 407. Plants, On Distribution of, in North Temperate Zone, 171, 192. Platycrinus Americanus, 298. Burlingtonensis, 299. caniculatus, 299. cavus, 299. corrugatus, 299. discoideus, 299. exsertus, 299. nodobrachiatus, 299. nodulosus, 299. nucleiforrais, 299. pileiformis, 299. planus, 299. poecilliformis, 299. Saffordi, 299. Sara;, 299. sculptus, 299. Shumardianus, 300. subspinosus, 300. tuberosus, 300. truncatulus, 300. truncatus, 300. Wortheni, 300. Yandelli, 300. Pleurocystites Anticostiensis, 300. elegans, 300. exornatus, 300. filitextus, 300. robustus, 300. squamosus, 300. Pogonatum Japonicum, 278. Polynesian Plants, Notes on, 319. Polyporus linteus, 122. marmoratus, 122. Nicaraguensis, 122. nitidulus, 122. ochrotinctus, 122. pocula, 122. Polysiphonia calacantha, 330. flabellulata, 530. Harlandi, 330. Stimpsoni, 330. Poteriocrinus alternatus, 300. calyculus, 300. gracilis, 300. hemisphcericus, 301. longidactyhis, 301. Meekianus, 301. INDEX. 455 Poteviocrinus Missouriensis, 301. occidentalis, 301. rlionibif'erus, 301. rugosus, 301. spinosus, 301. tumidus, 301. Prescott, William H., Qbituary Notice of, 149. Probabilities, La Place's Doctrine of, 433. Psycbotria apocynifolia, 47. apodantha, 46. Brackenridgii, 44. calycosa, 45. closterocarpa, 44. cordata, 46. filipes, 46. Forsteriana, 44. gracilis, 45. hypargyra3a, 46. insularum, 45. macrocalyx, 46. parvula, 45, 306. Pickeringii, 47. platycocca, 47. serpens, 306. turbinata, 45, 306. Psycliotrie^, 41. Pterotocrinus capitalis, 301. coronarius, 302. Ptycbomitrium Wilsoni, 277. Pticcinia docbmia, 126. sepulta, 126. triarticulata, 126. Pygorynchus Gouldi, 302. Pyxine Cocoes, 401. Meissneri, 400. retirugella, 403. Q. QuiNCY, JosiAH, Communication ' from, 366. E. Radiata, Classification of, 441. Radulum rhabarbarinum, 123. Reflex Vision, 373. Registration in Massachusetts, In- fluence of Legislation on, 34'J. Report from Committee on Arctic Expe- dition, 103. Committee on the Library, 1, 93, 225. Committee of Publication, 1, 93, 225, 336. Council, 96, 226. Treasurer, 1, 93, 225. Rhizopogon piceus, 124. Rhodocrinus Wortheni, 302. Rhytisma erythrosporum, 128. Ritchie, E. S., Communication from, 375. Rivularia opaca, 335. Rogers, W. B., Communications from, 12, 22,31,33,218,337, 338, 360, 376. Rubiacete, Notes upon, 33, 300. RuhmkorfF Apparatus, Improve- ments in, 376. Rytiphloea complanata, 330. S. Saccocrinus speciosus, 302. Salices Boreali-Americanfe, 50. Salix acutifolia, 57. adenophylla, 65. alba, 55. alpestris, 69. amygdaloides, 53. arbuscula, 71. arctica, 68. Barclayi, QQ. Bigelovii, 58. brachystachys, 00. Candida, 60. capreoides, 60. cinerea, 60. cordata, 64. Coulteri, 58. curtiflora, 70. Cutleri, 73. desertorum, 68. discolor, 63. J Drummondiana, 03. 456 INDEX. Salix eriocepliala, 57. Fendleriana, 54. fragilis, 55. Geyeriana, 63. glacilis, 72. glauca, 68. gracilis, 67. herbacea, 74. Hindsiana, 56. Hookeriana, 59. hurailis, 67. irrorata, 57. lanata, 59. Lapponum, 59. lasiolepis, 58. longifolia, 55. loiigipes, 53. lucida, 54. macrocarpa, 64. Myrsinites, 70. myrtillifolia, 74. myrtilloides, 65. nigra, 53. ovalifolia, 72. petiolaris, 67. phlebophylla, 72. phylicoides, 63. polar is, 74. Pseudo-myrsinites, 70. purpurea, 57. repens, 67. reticulata, 74. rhamnifolia, 71. sericea, 66. sessilifolia, 56. Sitchensis, 66. speciosa, 59. subcordata, 69. taxifolia, 56. tristis, 67. vagans, 61. viminalis, 57. viridis, 55. Wrightii, 55. Sandal-wood of the Sandwich Isl- lands, Species of, 326. Santalum ellipticum, 327. Freycinetianum, 326. pyrularium, 327. Sargassum assimile, 328. corynocarpum, 328. filicinum, 327. pinnatifidum, 327. Ringgoldianum, 328. Rodgersianum, 328. siliquastrum, 328. Saxocrinus interscapularis, 303. Scaphiocrinus dactyliformis, 302. decabracliiatus, 302. dichotomus, 302. internodius, 302. scoparius, 302. simplex, 302. Schizocrinus nodosus, 302. striatus, 302. Scyphiophora, 307. Schyphocrinus heterocostalis, 303. Sharswood, William, Commu- nication from, 96. Shaav, Chief Justice, Communica- tion from, 353. Sherwin, T., Communications from, 19, 79. Sophocles, Prof., Communica- tion from, 407. Species, On the Origin of, 410, 411, 415, 424, 426, 428, 431. Sphairia culcitella, 128. Cullumia;, 130. depolita, 128. pardalios, 128. Sphccropsis arctica, 125. Boninensis, 125. Photinije, 125. Stenaster pulchellus, 303. Salteri, 303. Stephanocrinus angulatus, 303. gemmajformis, 303. Stereoscopic Slide, 360. Stereum Nicaraguense, 123. subcruentatum, 123. Storer, F. pi., Communication* from, 79. Storer, H. R., Communications from, 109, 338. Straussia, 42. Hawaiensis, 43. Kaduana, 43. INDEX. 457 Straussia Mariniana, 43. Stylocoryne coflxeoides, 309. Harveyi, 309. sambucina, 309. Suhria Japonica, 331. SuLLivANT, William S., Com- munication from, 275. SwETT, Samuel, Communication from, 100. Synbathrocrinus dentatus, 303. matutinus, 303. Swallovi, 303. Wortheni, 303. Taenicaster cylindricus, 303. spinosus, 303. Tarotea, 39. Telegraph, Application of, to Pre- dict Changes of Weather, 271. Telegraph Cable, Submarine, 97. Tendrils, On the Coiling of, 98. Thelephora xerantha, 123. Thysanocrinus aculeatus, 304. canaliculatus, 304. immaturus, 304. liliiformis, 304. Timonius, 35. afRnis, 36. Forsteri, 35. sapotaefolius, 35. Tortoise, Origin and History of the Word, 208. Treadwell, D., Communication from, 366. Trichomanes latemarginale. 111. Trichostomum tortuloides, 277. Triphragmium binatum, 125. Turtle and Tortoise, Origin and History of the Words, 208. U. Uredo asperata, 126. Bauhinise, 126. constellata, 126. Lupini, 126. Uromyces Japonica, 126. Lupini, 126. statices, 126. - Valonia Forbesli, 333. Vasocrinus sculptus, 304. valens, 304. Vibrio resulting from Decomposed Muscular Fibre, 199, 207. Vision, Reflex, 373. W, Warren, Dr., Communication from, 197. Weinland, Dr., Communications from, 5, 6. Willows, Synopsis of North Amer- ican, 50. Woodsia, polystichoides, 110. Wrangelia Tanegana, 331. Wright, C, Communication from, 432. Wtman, J., Communications from, 17, 360. X. Xerotus fragilis, 121. fuliginosus, 121. pusillus, 121. Y. Yellow-Metal Sheathing, On the Corrosion of, 28. Zeacrinus depressus, 304. elegans, 304. intermedius, 304. magnolifeformis, 304. maniformis, 304. ramosus, 304. Wortheni, 304. END OF VOL. IV. / 15' MBL/WHOl LIBRARY UH lA7n 3