^> V 'VS,*'" «: r ^^ • ( :»v ■>-« I. ^.y-. :. I* V ;''S'^--->A.- V ^■>^^v.>-, WV ( N V f-^ ; *i^fi^ . ■* V^*4 "-i-AKICAL GAkDEN DBBASty} .^ Forestry Quarterly VOLUME PUBLISHED UNDER THE DIRECTION OF A Board of Advisers of the Faculty and Alumni OF The New York State College of Forestry CORNELL UNIVERSITY ITHACA, NEW YORK 1902-1903 PRESS OF Andkus & Church, ithaca, n. y. TABLE OF CONTENTS. PAGE Announcement i Cotta's Preface 3 Volume Tables and the Bases on which they may be Built 6 JuDSON F. Clark, Assistant Professor of Forestry at Cornell Uni- versity. Difficulties and Errors in Stem Analysis 12 A. S. Wii,i,iAMS, Cornell University. Adirondack Birds in their Relation to Forestry 18 E. A. Sterung, Field Assistant, U. S. Bureau of Forestry. Outlook of the Timber Supply in the United States 41,87 B. E. Fernow, Director of the New York State College of Forestry. Natural Reproduction in the Adirondack Forests 50 A. KnechTEI,, Forester to the New York Forest, Fish and Game Commission. On the Form of the Bole of the Balsam Fir 56 JUDSON F. CI.ARK, Assistant Professor of Forestry at Cornell Uni- versity. Forestry at an American Agricultural Experiment Station 81 Walter Mulford, Forester of the Connecticut Agricultural Ex- periment Station. Forest Advance Over Glaciated Areas in Alaska and British Columbia . 94 Marsden Manson, Commissioner of Public Works, San Fran- cisco, California. Forest Problems in New Hampshire 121 Philip W. Ayers, Forester to the Society for the Protection of New Hampshire Forests. Factors Influencing the Volume of Solid Wood in the Cord 126 Raphael G. Zon, Bureau of Forestry. New York Forest Fire L,aw 134 Clifford R. Pettis, Forester to the New York Forest, Fish and Game Commission. Forestry Quarterly. Forest Planting on the Plains 140 E. P. Sandsten, Assistant Professor of Horticulture, University of Wisconsin. Current Literature and Reviews 26, 62, 97, 145 Periodical Literature 32, 65, loS, 148 News and Notes 36, 75. "3. I55 APPENDIX. Bibliography of Forestry 163 Olive Williams, Columbia University Library. Index 173 Vol. I No. i Forestry Quarterly PUBLISHED UNDER THE DIRECTION OF A Board of Advisers of the Faculty and Alumni OF THE New York State College of Forestry CORNEIvL UNIVERSITY Ithaca, New York 1902 FORESTRY QUARTERLY Manay^ Year rgo2-j ^' ' '\^'^ Albert F. vSiebold rRKDERICK DUNLAP CLYDE LEAVITT Board of Advisers BERN'" '' Fernow ^^ ^^ John GiFFORD. D.CEc. * Walter Mulford, B.S.A., F.E. THE OBJECTS l OK WHICH THIS JOURNAL IS PUBLISHED ARE : ... ...^ .w w;e establishment of rational forest management. To offer an organ for the publication of technical papers of interest to professional foresters in America. To keep the profession in touch with the current technical lit- erature and the forestry movement in the United States. Sift^/e tiumberSy twenty-f Yearly subscriptions, $i.oo. CHURCH, ITH>. FORESTRY QUARTERLY. Vol. I. October, 1902. No. i. ANNOUNCEMENT. LIBRARY NEW YORK, Although there are a number of pubHcations in the United States and Canada, wholly or in part devoted to the propagand- ism of forestry, there are at the present time none which are mainly or entirely devoted to the professional or technical interests of the subject. With the establishment, within the last four years, of tvi^o fully- equipped special schools of forestry, whose graduates have begun work in the field ; with the rapid expansion of the field work of the Federal Forestry Bureau, and of other agencies in technical direction, professional foresters have multiplied, and the time for means of communication among those who are building up the science and art of forestry in the United States seems to have arrived. The Forestry Quarteri^y is intended to meet this need. Besides publishing original articles on subjects of interest to the profession, and translations of such articles from foreign sources, it is intended to bring reviews and references to the cur- rent literature, and also, in brief notes, the news of the for- estry world, personal and otherwise, with a view of keeping the readers in touch with the development of their art in all its branches. While this journal, in its inception and management, is a child of the New York State College of Forestry, it is hoped that, as time passes on, its pages may be used by all or any workers in the field for the discussion of their problems and record of their experiences. 2 Forestry Quarterly. The Forestry Quarterly opens its pages for the freest dis- cussion of all forestry problems ; it welcomes advice and invites criticism which may tend to promote our professional knowledge. Since no past masters of tlie art, but only a young generation of foresters, just bcgitniing their work, are, for the time being, to be the contributors and editors of this journal, it must step forth with due modesty and with the expectation of deficiencies, which only experience, as the time goes on, can correct. It is in the main a student publication, designed for students, both in the field and school. The supervision, by an Advisory Board of older men, will, however, assure as high a standard as is possible under such circumstances. We hope that in the conduct of this journal the spirit of one of the fathers of modern forestry, Cotta, so simply breathed forth in the preface of his first work on Silviculture, will be always pres- ent. To impress this spirit of modesty and yet of critical candor upon ourselves and upon our readers, we introduce this first issue with a translation of Cotta's words, which, written nearly a cen- tury ago, are still largeh" true and come home to us with pecu- liar force at this time, when the light of forestry is just dawning in our country. COTTA'S PREFACK. If the inhabitants of Germany should leave their country it would be all grown up with woods within a century. Since there would be nobody to use them, the soil would be enriched and the woods would not only increase in size, but in productive power. If, however, the people returned again and made just as large drafts as before for wood, litter and pasturage, the wood- lands, even with the best forest management, would again not only be reduced in size, but also become less fertile. Forests form and thrive best where there are no people — and hence no forestry, and those are perfectly justified who say : Formerly we had no forestry science and enough wood ; now we have that science, but no wood. One could say with the same justice : Those people are health- ier who do not need a physician than those who do. But it would not follow that the physicians are to be blamed for the diseases. There would be no physicians if there were no diseases, and no forestry science without deficiency in wood supplies. This science is only a child of necessity or need, and need is therefore its natural concomitant ; hence the phrase should be : We have now a forestry science because we have a dearth of wood. Forestry, however, does not offer au}^ nostrums and can do nothing against the course of nature. The celebrated physician Verdey said : ' ' The good physician lets people die ; the poor one kills them." With the same right one can say the good for- ester allows the most perfect forests to become less so ; the poor one spoils them. That is to say, just as the good physician can- not hinder that men die because that is the course of nature, so the best forester cannot hinder that the forests, which came to us from past times, become less now they are being utilized. German}' formerl}' contained immense, perfect, most fertile forests. But the large forests have become .small, the fertile have become sterile. Each generation of man has seen a smaller generation of wood. Here and there we admire still the giant oaks and firs, which grew up without any care, while we are perfect!}^ persuaded that we shall never in the same places be able, with any art or care, to reproduce similar trees. The grand- 4 Forestry Quarterly. sons of those giant trees show the signs of threatening death before they have attained one quarter of the vohime which the old ones contained, and no art nor science can produce on the forest soil which has become less fertile, such forests as are here and there still being cut down. The good forester then, also, allows the forest to become less, but only where it cannot be helped ; the poor forester, on the other hand, spoils them everywhere. Without utilization, the forest soil improves constantly ; if used in orderly manner it remains in a natural equilibrium ; if used faultily it becomes poorer. The good forester takes the highest yield from the forest without deteriorating the soil, the poor one neither obtains this yield nor preserves the fertility of the soil. It is hardly credible how much one can benefit or damage by the kind of management ; the true forestry science contains, therefore, much more than those think, who know only its gene- ralities. Thirty years ago, I prided myself on knowing forestry .science well. Had I not grown up with it and in addition had learned it in the universities ! Since then I have not lacked the oppor- tunity for increasing my knowledge in many directions, but during this long period I have come to see very clearly how little I know of the depths of the science, and to learn that this science has by no means reached that point which many believe to have been passed . Many perhaps may be in the condition in which I was thirty years ago ; may they in the same manner be cured of their conceit ! Forestry is based on the knowledge of nature ; the deeper we penetrate its secrets, the deeper the depths before us. What the light of an oil lamp makes visible is easily overlooked ; many more things we can see by torch light, but infinitely more in the sun light. The lighter it grows around us, the more unknown things become apparent, and it is a sure .sign of shallowness, if anybody believes he knows it all. Our foresters can .still be divided into empiricists and scientists, rarely are both united. What the former considers sufficient in a forest management is easily learned, and the systematic teachings of the other are soon memorized. But in practice the art of the first stands to a Cottd' s Preface. 5 thorough forestry science in the same relation as the quack medi- cine to the true pharmacopia ; and the other often does not know the forest for the many trees. Things look very differently in the forest from what they do in books ; the learned man stands there- fore, frequently, left by his learning and at the same time without the bold decision of the empiricist. Three principal causes exist why forestry is still so backward ; first, the long time which wood needs for its development ; second, the great variety of sites on which it grows ; thirdly, the fact that the forester who practices much writes but little, and he who writes much practices but little. The long development period causes that something is con- sidered good and prescribed as such which is good only for a time, and later becomes detrimental to the forest management. The second fact causes that what many declare good or bad, proves, good or bad only in certain places. The third fact brings it about that the best experiences die with the man who made them, and that many entirely one-sided experiences are copied by the merely literary forester so often that they finally stand as articles of faith which nobody dares to gainsay, no matter how one-sided or in error they may be. Heinrich Cotta. Tharandt, Dec. 21, 18 16. Heinrich Cotta, born in 1763 in Thuringia, said of himself : " I am a child of the forest ; no roof covers the spot where I was born. Old oaks and beeches shade its solitude and grass grows upon it. The first song I heard was of the birds of the forest, my first surroundings were trees. Thus my birth determined my calling!" He became the grandmaster of his profession. His " Anweisung zum Waldbau," from which this preface is taken, first published in 1817, experienced many editions, the last one in 1865 edited by his grandson Heinrich von Cotta. VOLUME TABLES AND THE BASES ON WHICH THEY MAY BE BUILT. Ever since the sustained annual yield became a factor in forest management ever}- method of reducing the labor involved in taking an inventory of the stock on hand has been welcomed by the forest manager. One of the greatest of these labor savers is the volume table by means of which it is possible, with a mini- mum of measurement and calculation, to obtain the cubic content of a stand in a very satisfactory manner. The first suggestion of the volume table was that of Cotta in his " Systematische Anleitung zur Taxation der Waldungen," published in 1804. Forest mensuration, like all other branches of forestry in the early decades of the nineteenth century, suffered from a lack of exact investigation, and Cotta' s splendid idea was first developed on a scale large enough to be of practical value when the Bavarian government, in 1846, instituted a very ex- tended .study in the form and content of the stems of the more important forest trees of that country. The volume tables which resulted from this study, which in- volved a complete analytical measurement of over forty thousand trees, were based on Cotta's idea that on the average, where con- siderable numbers were involved, trees of the same diameter and height contained equal volumes of wood. These tables were later translated from the old Bavarian foot and inch measure into the metric sy.stem by Ganghofer. Ganghofer also improved the op- portunity to introduce age classes as a third basic factor in his classification. The latter half of the nineteenth century witnessed a very great activity in research along forest mensuration lines, the greater part of which was directed towards the improvement and exten- sion of the volume tables. With .some minor exceptions, the work followed closely the lines of the Bavarian tables as improved by Ganghofer, and with the exception of the last decade, no original ideas of nny great value were developed. The preparation of tables that are to be of wide applica- tion and permanent value involves the measurement of a very large number of trees selected from various localities and, as Volume Tables. 7 may be supposed, is a very laborious and time-consuming work. This can perhaps be best appreciated by glancing at the labor involved in the preparation of Baur's volume tables for the Nor- way or European Spruce, published in Munich in 1891. 55,- 874 stems of Norway Spruce were carefully measured and their volumes separately calculated. This involved over six million measurements and as many calculations. Then came the great labor of digesting, classifying and preparing the results for publi- cation, which required an additional eighteen months of labor. The great value of such tables, however, has been a sufficient in- spiration to lead to the preparation of such tables for all the com- mercially important species of Europe. These tables are widely used to-day wherever the species for which they were prepared are under careful forest management. Volume tables, as already mentioned, are based on a classifica- tion of the stems measured into height, diameter and age classes. The height and diameter measurements are of course fundamental and must be used as factors for classification in any volume table. A classification based on these two factors alone, however, was early found to be insufficient, for great variations in cubic content constantly occur in trees of the same diameter and height. Vari- ous factors cause this variation in the form of the stem, among which might be mentioned age, exposure, soil and climatic con- ditions, altitude and variations in the light conditions obtaining during the growth of the individual trees. The exigencies of table-making limit the factors to be used in a classification of data for a single table to two. This may be in- creased to three if the tables are to be a combination of the sim- pler tables, as many tables being necessary as the third factor is given divisions. To introduce a fourth factor as a base of classifi- cation would make the tables so large and complicated that they would be impracticable. Recognizing that the two factors, height and diameter, while fundamental, were not sufficient for practical purposes, age classes were chosen as a third factor by all except the most recent workers, and the volume tables for height and diameter classes were computed for each age class (age classes of forty years were usually used). Age was selected from among the various factors as being at once one of the most important factors in influencing 8 Forestry Quarterly. tlie form of the stem, and being a factor easily determined with tolerable accuracy. When used with judgment these tables have proved of very great value in practical forestry operations greatly lessening the labor of determining the volume of stands inasmuch as they do away entirely with the necessity of sample trees, the volumes of the trees in the various diameter and height classes being read directly from the table. They are of course not used and not in- tended for use in the determination of volume in single trees, for trees of the same age, height and breast-high diameter growing side by side in the same stand sometimes vary in cubic content by 20 ''/c or even more. In a stand that is approximately an average stand, however, these individual variations compensate, and a very .satisfactory average result may be obtained. Unfortunately, even in Germany with its intensive management, variations of a very marked character occur in the form of the average stem due to other causes than age. Where, as in America, the forests have developed without care and the silvicultural con- ditions are merely a result of natural forces and where great variations in age occur even on very limited areas making age classes impossible, these variations are of much more frequent occurrence. The weakness of a table founded on height, diame- ter, and age classes is shown in that it is incapable of adapting itself to any variation in the average form of the .stem aside from that caused by age. In an effort to overcome this difficulty Schuberg ' in 1891 pre- pared "correction tables" by means of which it was possible to take into consideration the changes in the form of stems due to the various and often varying factors of site and silvicultural conditions. These tables prescribed that a percentage be added to or deducted from the amount read in his volume tables for the Silver Fir according as the stems proved of more or less cylindrical in form than normal. This variation in the form was determined by comparing the relation between the breast-high diameter {d) and the diameter at the middle of the stem (8). The propo.sition that any variation in the cubic content of the boles of trees of equal height and diameter, must show it.self in a more or less cylindrical form of these boles, seems impregnable. That this ' Formzahlen und Massentafeln fur die Weistanne, Berlin, 1S91. Volume Tables. 9 variation in form from or towards the cylindrical would be well expressed by the relation between two diameters properly chosen at different points on the stem is equall}- evident. The breast- high diameter has been universally chosen as the most practical point at which to measure the diameter of standing trees. Schu- berg found from a very careful study of 1352 trees that the middle point was the most critical point on the stem for a second measure- meut. This relationship then between ^ and 8 (or X 100 to d express it as a per cent.) is capable of expressing any variation in form due to any factor or combination of factors, such as site, age, or silvicultural conditions. In the same year Kunze ^ published the results of a very thorough study of the form of the stems of the Norway Spruce and Scotch Pine with regard to this relationship of d to S. Some 10,000 spruce and over 8,000 pines were carefully measured, but aside from demonstrating the entire practibility of utilizing this factor in determining the form factor (/") of stems, Kunze failed to suggest any important practical application. It remained for Schiffel ^ to develop this idea further, and in 1899 he published his volume tables for the Norway Spruce based on height and diameter classes and the — relationship. His d tables were developed from data obtained by the careful section- ing of 2,529 trees, in all of which he made a special note of the relationship between the diameter at breast-high and that at yl and ^ height as well as that at )4. height (S). He finally con- cluded that while the ^ height diameter could be safely utilized when from any cause the diameter at ^ height could not be measured (obscured by branches, etc.), but that, on the whole, the diameter at ^ height was the most generally satisfactory. In this his work is in entire accord with that of Schuberg already noted. Schiffel has termed the factor which expresses the percentage relationship between the diameter at breast-high and that at yi height ( —r X 100 I \\\Qform quotient, and as the expression ^ Neue Methode z. raschen Berechnung d. unachten Schaftformzahlen d. Fichte u. Kiefer, Dresden, 1891. ^Fonn und Inhalt der Fichte, Mittheilungen a. d. Forstversuchswesen Oesterreichs, Wien, 1899. lo Forestry Quarterly. aptly expresses the idea of a quotient which is an index to the form of the bole of the tree I have adopted it, and for short we shall call it q-^ to distinguish it from q-^ or ^3 which would represent the form quotient obtained bj' using the diameter at )% or Yx height, respectively, as the upper diameter. The form factor and the form quotient of any tree being mutu- ally dependent for their magnitude on the shape of the bole of that tree, it follows that they must bear a very close relation to each other. Schiffel found that this relationship varied some- what with varying heights of the trees but that in stands of com- paratively even height, such as mature stands, the variation was very slight and when the / and the q^ were expressed in per cents, the difference averaged about 21 which we may term a constant (C) for that species. This constant, it will be noted, is not appreciably affected by variations in the form of the stem due to age, site, or silvicultural conditions, the form factor and the form quotient being both similarly influenced by such variations. This then gives us the simplest method that has yet been sug- gested for the determination of the approximate form factor of a tree, viz., divide the breast-high diameter into the diameter at middle height, multiply by 100 and substract the constant, or to express it as a formula, ( ^ >< ^°° ) - ^ = / The accuracy of the result will vary from tree to tree, but the maximum variation in any coniferous tree that would be nearly- enough normal in development to be selected for a sample tree in measuring a stand would not exceed 6 per cent. Where a num- ber of sample trees are taken, the error would be compensating and could be wholly neglected, provided the c had been carefully determined for the species. That the constant should vary in different species was to be anticipated. Unfortunately very little exact work has yet been done in testing this point in different species. What has been done, however, seems to indicate that the variation may after all be con- fined to relatively narrow limits. The Scotch Pine has been found to give a C of about 20, while that of the European beech is be- tween 22 and 23.' The similarity in value of the constant here between the species varying so widely in habit of .stem growth. Volu77ie Tables. 1 1 and the closeness of the figure fonnd for the Scotch Pine to that given for the Norway Spruce suggests the possibiHty of using the same voUtme tables with sHght correction factors for species which do not vary all to widely in habit of stem growth.^ The point which will strike the practical man in this connection is that this method of developing and using volume tables neces- sitates the measuring of trees at a point where standing trees can- not be directly measured. So far as the measurements for the construction of the volume tables are concerned, they must in any case be made on felled trees, which involves no difficulty. The same, of course, applies to the measuring of stands where it is possible to cut the sample trees. Where, however, it is impossi- ble or undesirable to cut the sample trees, a real difficulty, but by no means a great one, is met. Modern improvements in the instruments at the disposal of the forester has given him several by means of which it is possible to measure the diameter of a standing tree at any desired point with accuracy and considerable despatch, provided the point can be plainly seen. Wimmenauer's Baummesser' is perhaps the most satisfactory of the cheaper instruments that are at the same time thoroughly practical. It is a combination of a telescopic diame- ter measure with a splendid form of Weisse's height measure. For use in the woods I attached it to a stout camera tripod and found that with an assistant one could easily take all needed measurements on one hundred sample trees in a day of ten hours. Very little has yet been done in the way of developing volume tables for the American species ; indeed, aside from the Adiron- dack Spruce and the White Pine, we know but little of the aver- age form and content of the stems of our varied silva. This is a field for almost endless research, and it may be that this recent improvement in methods may be used to advantage in the study. JuDSON F. Clark. ' See Miiller's Holzmesskunde. p. 221. ^ In another paper I shall give the results of some measurements on the Adirondack Balsam-Fir which indicated a constant of between 21.5 and 22 for that species. *For full description see Allgem. Forst- und Jagd-Zeitung, 1896. p. 222. It is made by W. Sporhase in Giessen for 63 mark (|i6.oo). See also Miiller's Holzmesskunde. p. 182. DIFFICULTIES AND ERRORS IN STEM ANALYSIS. Stem analysis includes two separate series of measurements, namely the determination of increments and of volume. The exact procedure and sequence of operations, as carried on under the instructions of the U. S. Bureau of Forestry, differs, depending on the chief of the party, the individuals employed, the kind of timber, and several other variables. The data to be obtained is, however, the same, and the method employed is in general as follows : The tree when felled is sawed up into sections. These sections, if the tree is cut solely for the measurements to be taken, should be made short enough to permit a true reading of the growth history of the tree, yet they should not be too short to increase the expense for it makes considerable difference in the cost of investigations if a man spend thirty minutes measuring up a tree or forty-five. The sections must be of equal length, of even feet, preferably even fives in order to facilitate working up of data. It will readily be seen that the required length of section should be in relation to the height of the tree. It would be unnecessary finesse to take two foot sections of a 150 foot pine ; again ten foot sections of a 15 foot sapling would be insufficient. The Bureau practice is as follows : Seedlings three feet, or under are sectioned every foot above root juncture, saplings between three and ten feet are sectioned every two feet, trees over ten feet in height are sectioned every ten feet, intermediate taper measurements being made every five feet. Generally however, merchantable trees are not cut purposely by the Bureau, but measurements are taken on trees as felled and cut in varying lengths by lumberman. According to market requirements, these logs may run 10.3, 10.4. 10.6, 12.4, 12.5, 16.5, 16.6, 16.7 feet, etc., the choice being with the sawyer, who varies the length so as to get the largest amount of timber out of the tree. The fractions of feet vary with the ])ersonal c(juatioii of the sawyers', a knot in the Diffiailties a7id Errors in Stem A^ialysis. 13 log, the roughness of the river drive through which the log must pass, and other similar causes. This variability of log length gives considerable trouble in working up the data, but is of course unavoidable. The object of the sectioning is in general merely to obtain the area and height increments, and the thickness of bark, often the width and age of the sapwood is also taken. The volume of the stem is computed separately from a second series of measurements. To obtain the rate of height growth from the cut sections is of course simple ; the difference between the number of rings on two adjoining cuts gives the length of time during which the tree grew in height the length of the intercepted section. To obtain the diameter growth correctly is neither simple nor easy. Considerable error is here involved even with care and ex- perience. This error will be greater on the stump section and decreases on the upper sections. Ideally a tree is a paraboloid, its cross section a circle ; really it is an extremely variable form. Were the cross section a circle, and the annual growth concentric layers of even thickness all around, the operation would be simple, the measurements easy. One would merely have to la}^ the rule across the section from pith to perimeter and count and measure the ten year periods. In reality the outline of the cross section is extremely irregular, especially so on the stump cut. The rate of growth desired is finally that of the area of each section it must therefore be ob- tained from an average radius. At first sight this would seem a simple matter, and so it is on the upper sections, but the stump presents some difficulty. This average radius may in general be obtained from the largest and smallest diameters inside bark, but perhaps the largest diameter is caused b}'' a sudden prominent root swelling ; it is evident that a radius derived from this diameter would be two large, a deduc- tion should be made from the diameter, preferably by the eye with the calipers on the stump. The average radius having been determined, it is necessary to lay it off on the stump. The number of places on which this radius can be laid off will vary from two in an ellipse to an infinite number in the circle. Assuming a case in which two only can be found, would it make any difference which was taken ? 14 Forestry Quarterly. The following example, taken from actual measurements of a White Pine section, shows the variability of results and the neces- sity of judgment in choosing the proper diameter : Rad. A. Rad. B. •35 .20 .65 .80 I 1.20 1.80 2.10 3 330 4.60 4.90 6.60 7 8.50 8.35 10.30 9.70 11.65 10.85 Diam. A. Diam. B. .70 .40 1.30 1.60 2 2.40 3.60 4.20 6 6.60 9.20 9.80 13.20 14 17 16.70 20.60 19.40 23.30 21.70 Growth. Area % A Area % B 137 121 324 207 223 146 125 120 106 104 65 42 45 35 28 25 Rad. A. Rad. B. 1 1 , 13. 1014.75 16.20 12.3014.20 15.15 17 15-75 17.60 16.35 18.20 16.75 18.60 17.60 19 18.40 19.30 19 19.60 19.60 Diam. A. Diam. B. 26.2029.5 24-60 28.4 32.4 30.3 34. 31-5 35-2 32.7 36.4 33-5 37-2 35-2 38 36.8 38.6 38 39-2 39.2 Growth. Area % A Area ^ B 26.4 26.7 28.3, 33.2 20.6 14-5 10.1 07.9 7-1 8.0 6.9 4-9 44 5-1 4.3 9-3 3-2 6.6 3-7 6.5 The choice of the radius should be made with the eye ; choos- ing the one where the annual rings show the greatest regularity in width and curve. It sometimes happens that the average radius can not be exactly found on the .stump of trees felled in regular logging operations. The tree has been notched in such a way that the place where the radius .should be located is in the rough slanting surface of the notch ; or it may be that a spot of rot appears in the place where the required radius should be drawn. As a gen- eral rule, and preferably, such a tree should be thrown out of con- sideration ; nevertheless in practice there arise cases when it should be taken. It may be of a diameter especially needed for completeness or in large timber the necessity of fully employing the measuring crew when following the sawyers closel}-, without interruption will make it expedient to use each tree without dis- tinction. In such cases the measurements can be obtained with sufl&cicnt accuracy as follows : Difficulties and Errors in Stem Analysis. 15 a. Find an available radius as nearly equal to the average radius as possible ; count off the decades on this. b. Draw a line from the pith, at 90° or less from the radius on which the decades were counted, make it the length of the average ladius. c. Connect the ends of these two lines already drawn by a ' third. Lines drawn parallel to this third line from the decades marked off on the radius will cut the real radius giving the re- quired decade lengths. The lines are easily drawn parallel by means of the rule and a tally sheet for a triangle. In determining the width and age of the sap wood, a very im- portant measurement in some species, it will be found that the average radius seldom crosses the sap at its average width. It is necessary, therefore, that the width of sap appearing on that radius be disregarded, and the average width be laid off at the end of the average radius ; the number of rings to be found in the space thus laid off Vv'ill give the true age of sap wood. The first operation in the series of form measurements is to measure the height of the stump. This is necessary for two reasons ; first, that the full volume may be calculated ; secondly, that the " breast high " point on the butt log may be properly located. Stumps are measured in height to the nearest half foot ; this operation would, therefore, at first sight seem simple, yet trees do not grow regularly, as one would wish ; they grow on side hills, on boulders, on logs, against one another. Three out of four times there is no trouble in " declaring " a stump, but the third time one might throw it into one class or another. The error here involved might appear to be compensating ; it is not ; involving the personal equation it is accumulating. One man will invariably throw the doubtful stump in the upper height class, another man would throw it in the lower. The following typical example will show the result of the error involved. A stump whose diameter is 41.4" was called two and a half feet high instead of two feet ; by so doing it was credited with a larger volume than it really possessed ; by calling the stump a half foot higher than it really was, the breast high point was lowered one half a foot on the log, thus occasioning a change in the breast i6 Forestry Qtiarterly . high diameter of 1.2 inches ; or in other words calHng a tree 37" in diameter when it really was onlj' 35.8. The use of this tree for a volume curve would therefore throw the curve out to the amount that a 36" tree should differ from a 37" tree, less the partial compensation introduced by the extra one half foot in the stump. The following figures will show the amount of error in the case cited : Stump ! Stump Height. Diameter Difference in Volume of Stump. Difference in Tree Volume. Error. 4.6 cu. feet. 16.9 cu. ft. that 16.9-4.6 I should exist. 12.3CU. ft. Or in words a 37" tree is used which contains 12.3 cubic feet less than such a tree should contain. "Tapering " a tree offers little other difficulty, and is subject to the same rules regarding regularity of distance as the section- ing of the stem, in fact it would be simpler to take the taper measurements at the .same places as the section cuts, were it not that the length of the log is usually too great to give the true form of the tree if only measured at the log ends. The practice of the Bureau, therefore, is to take taper measurements on large trees at every five feet. The simple operation of "tapering" affords little opportunity for error to creep in except by improper use of the calipers or by their inaccurateness. Ivrror due to the first cause is exceedingly common in varying degree. It is seldom that two men can taper a tree independently and get the same results. One will neglect to take the two read- ings at each place directly at right angles to one another ; the other n)ay pinch the calipers too hard. With the calipers ordinar- ily in use, if great care is not used a loss of half an inch in diam- eter is easily the result. Error resulting from inaccurate calipers is, of course, quite inexcusable, and as it is accumulating, very serious. It is caused by not having the caliper arms parallel. It will be greatest on the large diameters, for they are measured usually nearer the ends of the arms. Difficulties and Errors in Stem Analysis. 17 Example showing the error from " squeezing " calipers Y^" or having the arms not parallel to the same amount. True D. bh. ^35.8 True vol. = 347.66 cu. ft. Errorof vol. ^12.50 cu. ft. False D. bh. =35.3 False vol. = 33516 cu. ft. Per cent, of Error ^3.6. The error in amount grows with the size of the tree while the percentage error decreases. Measurements in general are considered to be free of the ele- ment of judgment, but it will appear from these considerations that in forest work this is not so. There is a tendency on the part of many, especially over zealous new men, to stretch for use- less and uncalled for accuracy. Such men will be found running the tape over the bumps and crooks of a hundred and fifty foot pine and then reading the tape at the end of a very irregular crown to the tenth of a foot. Such w^ork is not accurate but merely a show on paper. Discretion as to the degree of accuracy attempted is as needful as discretion in the manner of measuring. Other difficulties than those which have been mentioned occur; for instance the counting of the rings. They are present, how- ever, only with certain species, or conditions and are to be over- come by special individual methods. A. S. Williams. ADIRONDACK BIRDS IN THEIR RELATION TO FORESTRY. We have all learned, it is to be hoped, to look at a forest not as a mere collection of trees, but as an organic whole, the result of actions and reactions of all the factors found within its limits. Technicall}' speaking, there is required a forest canopy of cer- tain density and a forest floor, both of which conditions must be produced by a stand of timber trees, not fruit trees ; yet this does not, by any means, include all of the component factors of the actual forest. The shade-enduring herbs and shrubs on the ground, the mosses and lichens on tree trunks and branches, and a host of other vegetable forms are likewise a part of the forest whole, since they are products of and entirel}' dependent upon natural forest conditions for their maintenance. Going a step further, the worms of the soil, the diptera in the air, the myriads of insects on leaves and bark, the mammals, and lastly, the birds in tlie branches may likewise be included. Whether or not an actual part, it is at any rate true that all of these animal and vegetable forms do exist and play their important role in the economy of the forest. The nitrifying bacteria in the soil are constantly replacing the nitrogenous elements absorbed by the trees in their process of growth. Other minute organisms and certain fungi are reducing by decomposition the fallen leaves and twigs and dead trees into available plant food, and so on each individual is doing its share towards the perpetuation of the forest. The larger animate things are likewise doing their part, but in a totally different, yet equally efficient way ; their work being found in the extermination of smaller forms detrimental to tree growth. No living thing can long exist without a food supply of some sort, thus it has come about that many of the higher forms of life fiu'l their source of supply in other forms smaller or weaker than themselves. When this food supply is found in an animal or plant which is of value to man, the organism which feeds thereon is termed "injurious." Thus when an insect lays its eggs under Adii'oidack Birds in their Relation to Forestry. 19 the bark of a valuable tree and the larvae which hatch therefrom find this tree a source of food and protection, man designates this an "injurious insect." Fortunately there are usually other creatures which feed upon these so-called injurious ones and keep them in check, and it is in this capacity that the birds find their field of usefulness. In the perfect forest there is an exact balance between all these combating elements, and the proper proportions exist so that the beneficial factors control and check the injurious agencies. When this balance is disturbed either way the general equilibrium of the forest is upset. If the insect-eating inhabitants are removed an "insect calamity " is inevitable, or it may occur that an animal, which under restraint is beneficial, becomes a pest when unre- strained. In nature the ideal balanced condition never actually exists, yet in an undisturbed forest the combating forces are so nearly balanced that marked disturbances are unknown. It is only when man enters with his axe, gun and tinder box that serious difficulties arise. In keeping with the growth of scientific wood- craft, it should then be the aim of every forester to carry on his work with the minimum disturbance of natural conditions. Possessed of the knowledge that all things in a forest have a rela- tion to it, either for good or bad, the forester should know well and study carefully all these influencing elements so that he may assist the good in overcoming the bad. It is to the credit of scientific workers that many of these factors, especially fungi and insects, have been studied with the aim of finding means for their control, but it is to their discredit that the important work which birds do in the protection of the forests has been largely overlooked, and that these feathered friends of forestry have received little aid from man, and ineffi- cient protection from their host of enemies. It is as consumers of injurious forest insects that the birds find their chief commercial function in the forest, yet the aesthetic benefits accruing from their presence and cheering song should not be overlooked. Available figures on the bird consumption of forest insects are not obtainable, but a few figures given by Mr. E. H. Forbush, Ornithologist of the Massachusetts Board of Agriculture, will give some idea of the insect capacity of one of our smaller Adiron- 20 Forestry Qiiarterly. dack birds. According to his authority an examination of the stomachs of four chickadees revealed the presence of 1,028 eggs of the canker worm. The stomachs of four other birds of the same species contained about 600 eggs and 105 female moths of the canker worm, the average number of eggs in each of the moths being 185. Since it is estimated that a chickadee will eat at least 30 female canker worms per day, it follows that 5,550 of these noxious insects would be destroyed per bird every twenty- four hours. Dr. A. D. Hopkins, authority on forest insects, states in his report on " In.sect Enemies of the Spruce in the Northeast," that " in hundreds of infested trees examined at least one half of the beetles and their yonng had been destroyed by birds and in many cases it was evident that even a greater proportion had perished from this cau.se alone." The woodpeckers were foremost in this good work. He estimates also that 100 beetles exist per square foot of the bark on an average infested tree, and as each tree is covered by some 60 .squaie feet of infested bark, it is possible for each tree to support 6,000 individual beetles, 100 trees 600,000, and so on. If the present number of birds is able to destroy one half of these beetles, it is apparent that legislation or any scheme of protection which will increase their number in even a slight de- gree, will materially decrease the number of ravaging insects. This becomes the more important when we recall that the beetles are able to overcome the resistance of a healthy living tree only when present in large numbers. These figures, while only ap- proximations, go to show .something of the enormous influence the birds exert in keeping in check the myriad of injurious in- sects which abound in field as well as forest. The money value they represent is beyond computation, yet it certainly runs far into the millions ainiually. Indeed, the statement so often made that without birds as in.sect de.'^troyers the earth would not long be habitable, is not beyond belief when we consider mathematically the rate at which insects multiply when unrestrained. The matter appears in even a stronger light when we realize that about nine-tenths of all animal forms are insects, and that the disproportionally small number of birds is the only power which keeps them in check. The capabilities of the birds in a definite region acquire also a greater significance if the following somewhat hypothetical case be considered. At a low estimate each Adirondack Birds iyi their Relatio7i to Forestry. 21 bird will consume dailj^ 30 insects. The total Adirondack region comprises some 4,000,000 acres, with a bird population per acre in summer of not less than four individuals. Tlie total dail}'' consumption on this area would then be 480,000,000 insects, or estimating 200,000 insects to the bushel, some 2,400 bushels. The disastrous result of these 2,400 bushels of insects if they were allowed to exist and multiply daily is only too evident. In the forest the work of the birds is of even greater import- ance than in agricultural communities because here they are the only direct means of destroying injurious insects, barring possibly the work of the so-called " beneficial insects," like the clerid {Thanasinucs nubihcs') , which is the enemy of the spruce borers of the genus Dendrodonus. In the woods, spraying, poisoning and the various other methods of destroying eggs and larvae cannot be practised, and the forester must stand a helpless onlooker in the event of an extended insect attack. Something can be done to protect a grove of park trees, but with an infested forest area of several hundred thousand acres in which are millions of trees, nothing can be done. Fortunately wide-spread devastation of timber, such as occurred in West Virginia from 1880 to 1893, and in the North- east some twenty years ago, is rare, which fact is due, no doubt, to quiet, yet efficient work which the birds are doing day by day the year round. During the summer months the swallows and swifts are busy by day darting through the air in pursuit of the aerial insects which constitute their sole food supply. When night comes their places are taken by the whippoorwills and nighthawks to whom the night-flying moths and millers are legal prey. In open spots on dead stubs or projecting limbs the various flycatchers sit like sentinels, leaving their posts only to dart after passing insects, which they secure by a series of lightning-like thrusts and darts. Less prominent but equally efficient in their work are the thrushes, sparrows and other ground birds, who explore among the grass and fallen leaves for ants and bugs. In the foliage of the trees the search is continued by the warblers and vireos, while the creepers, nuthatches and chickadees wind up and down the limbs and trunk, minutely investigating every inch of bark for eggs and larvae. The woodpeckers complete the hunt by drilling through the bark to obtain the ants and borers they hear at work 22 Forestry Quarterly . within. Witli sucli a division of labor in a body of such inde- fatigable workers, it is plainly evident that it is necessary only to have the proper-sized working force to insure complete protection. The casual observer in the Adirondacks would affirm that the number of species of birds, as well as the sum total, is small. Careful observation, however, indicates that the bird population is greater than is evidenced at first sight. From notes kept in the vicinity of Upper Saranac Lake for two seasons, the writer found that the total number of resident bird species exceeded seventy. Of these the greater number are insect eaters, wholly or in part, and were present in sufficient numbers to be desig- nated as " tolerably common." The birds which did not feed on insects, added their quota of good by destroying noxious weed seeds. This list of birds may be roughly giouped as follows : Woodpeckers. — In our north woods country, the woodpeckers deserve first place in the category of beneficial birds. Their chi.sel-like bill, sharp, distensible tongue, and acute hearing en- able them to locate tree borers, and remove them at a stage when they are doing the most harm. These birds are often ac- cused of injuring trees, but with the exception of a single species (Yellow-bellied sapsucker) they scarcely leave a mark on a health)' tree. On a sickly tree, which is full of adult beetles and larvae, they naturally make many holes in order to extract the borers, but the injury done by the birds is much less serious than that of the borers if undestroyed, and their removal not only gives the tree its only chance for life, but prevents the spread of the infection to neighboring trees. Then, too, their peculiar bodily structure is especially adapted for capturing many wood and bark borers, caterpillars and ants which would be in- accessible to other birds. Since their food supply consist.s of in- sect forms thus obtained, the number annually destroyed per bird is enormous. Mr. Frank M. Chapman, the well known ornithologist, .says : " It is evident that woodpeckers are great conservators of forests. To them, more than to any other agency we owe the preservation of timber from hordes of destructive insects." Dr. Hopkins, before mentioned, says: " Woodpeckers are the most important enemy of the bark beetle, and appear to be of inestimable value to the spruce timber interests of the Northeast." Adirondack Birds in their Relation to Forestry. 23 Seven species of woodpeckers are found in the Adirondacks, viz. : — The Hairy, Downy, Artie Three-toed, Banded Three-toed and Pileated Woodpeckers, and the FHcker and Yellow-bellied Sapsucker. The first two mentioned remain in their northern range throughout the year. Creepers, NzUhatches and Tits. — The arboreal birds most closely related to the woodpeckers in habit are the above three groups. They resemble them in their ability to climb readily upon vertical tree trunks, but differ in that their bills are not adapted for drilling through bark. The nuthatches and tits do not use their tails as a support, and climb with head downward or upward, as it happens, in contrast to the creepers and wood- peckers, who always climb head upward. The Brown Creeper is the only one of the genus in America. Of the nuthatches two species, the Red-breasted and White- breasted are common. Of the tits the Black-capped Titmouse or Chickadee, is the species common in northern New York. The food of these climbers consists of eggs and larvae which they find in crevices of the bark, varied occasionally by seeds and small nuts. Wood Warblers, Kinglets, etc. — In the family of warblers is included a large number of species which are more frequently seen than heard. They are small birds which inhabit dense thickets and the leafy branches of trees, and are for the amateur the most difficult birds to study. A few are vocalists of rare ability, but most of them reveal their presence only by a faint twitter or a flitting glance as they dart from limb to limb. They winter far south in Central America, but in summer come into the extreme temperate north to breed, and hence are common in the Adirondacks. Their food supply is almost exclusively insects, which they capture in the air or glean from the dense foliage which is their habitat. A large part of the insects they consume are harmless in nature, yet many of the smaller leaf-eating insects fall prey to their diligence. The following species have been recorded from the Adirondacks : Those bearing the name of warblers are the Golden-crowned, Yellow-rumped, Black-throated Blue, Chestnut-sided, Black and white. Black Poll, Red Poll, Nashville and Parula. Belonging to the same group is the Oven bird, American Redstart and Ruby-crowned Kinglet. Vireos. — A group of birds very similar to the warblers in habits 24 Forestry Quarterly. and habitat, yet slower in their movements and more musical. Strictly arboreal in habit, they find their food in crevices of the bark and on under side of leaves. They are not plentiful, yet per individual are great consumers of eggs and small insects. The Adirondack region supports four species, viz., the Red-eyed, White-eyed, Yellow-throated and Warbling Vireos. Sparrows and Firiches. — A large group of terrestrial birds with short conical bills which are specially adapted for crushing seeds. Although subsisting largely on a vegetable diet, they, neverthe- less, vary it with many insect forms, especially the ants, bugs and spiders found on or near the ground. In a farming country or near forest nurseries this family of birds deserves protection because of the vast quantity of noxious weed seeds they destroy. (But also of tree seeds, so that their usefulness is questionable. — [Ed.) Many of them, too, are in the first rank as song birds. The species seen in the woods and clearings of the Adirondacks are as follows : Of the sparrows proper the Song, Fox, W^hite- throated, White-crowned, Chipping and Vesper were noted. In addition the Junco, Goldfinch, Purple Finch, Rose-breasted Grosbeak, Indian Bunting and Scarlet Tanager were seen. Thrushes and Blue Birds. — A family of woodland birds whose sweet voices and expressive song have made them known and beloved by all who appreciate bird melody. Usually few in numbers and subsisting on a combined insect and vegetable diet their greatest value lies in the restful, uplifting influence of their song. The species recorded were the Wilson, Wood and Hermit Thrush and the Robin and Bluebird. Blackbirds, Orioles, etc. — We now come to a group whose direct value to the forest is seemingly wanting, as their haunts are the open fields and marshes, and their food a varied collection in which insects form an unimportant part. The representative species are the Red-winged Blackbird, Rusty Grackle, Bob-o-link and Baltimore Oriole. Seemingly rather an incongruous combi- nation, but scientifically all one family. Fly-catchers. — A more important group than .several of the pre- ceding. Living almo.st exclusively on an insect diet and existing in considerable numbers, they destroy large numbers of the light- winged insects, especially diptera. The Adirondack species are the Kingbird, Wood Pewee, Phoebe and Least Fly-catcher. Thrashers and Wrens. — Seldom inhabitants of dense forests, Adirondack Birds in their Relation to Forestry. 25 yet commonly found in scrubby growth on the edge of wood- lands. Several members of the family, which includes the mock- ing birds, rank high as vocalists. They are insectivorous birds, but are too few in number to be of great economic value. The Brown Thrasher, Catbird and Winter Wren constitute the Adi- rondack contingent. Swallows, Swifts, etc. — A group of birds quite abundant in the Adirondacks, the Swallows being frequently seen in large flocks over lakes, streams and open fields. They live entirely on insects which they catch while on the wing. Few birds are more deserv- ing of protection. The Cliff, Tree and Barn Swallows are com- mon in the North Woods. Although of another family the Chim- ney Swift is here included. Likewise the Ruby-throated Hum- ming Bird, which is a common Adirondack bird, whose favorite perch is a roadside telephone wire. Game Birds. — While of no especial value to a forest, the north- ern game birds deserve protection because of their value as food, and for the hunt. The red fox is the worst enemy of the Grouse. Ruffled Grouse is the only common game bird, although the Canada Grouse and Woodcock are occasionally seen. Noctur7ial Birds. —The Whippoorwill and Night Hawk are the two strictly insectivorous, nocturnal birds of the Adirondacks. The night-flying moths and millers are their chief prey. Several species of Owls also occur, but they subsist mainly on rodents. Crows and Jays. — " Saucy, impudent and worthless," describes the Crows and Jays of the woods. By destroying cutworms the Crow makes himself useful to the farmer, but in the woods he is a nois}^ thieving rascal. The Jays are no better. The common Crow, Canada Jay (Whiskey Jack) and Blue Jay are the repre- sentative species. An exhaustive study of the food supply of the forest birds has never been attempted, but their value in the forest seems so undis- putable that all possible protection and encouragement should be given them, unquestionably. If, in addition, steps be taken to destroy the natural enemies of the birds, to curb the bloodthirsty spirit of the small boy with his first gun, and to discourage the useless ^g^ collecting mania of the amateur ornithologist, the mutually beneficial relations which now exist between the birds and the forest will be perpetually maintained. E. A. Sterling. CURRENT LITERATURE AND REVIEWS. Forest Reserve Manual for the Information and Use of Forest Officers. Department of the Interior. General Land Office, pp. 90. By application at General Land Office. During- the past three years a strong movement has been made toward improvement in the management and forest conditions in the National Forest Reserves. The first step of importance gained was the appointment last year of Mr. Filibert Roth as Chief of the Division of Forestry, General Land Office. Mr. Roth was formerly Professor of Forestry in the New York State College of Forestry and a Special Agent in the Bureau of Forestry, Department of Agriculture. As Special Agent he spent consid- erable time in the Western Reserves and is thoroughly acquainted with the existing conditions. Since Mr. Roth's appointment he has attempted a gradual change in existing management by introducing technically edu- cated men. The position of Head Ranger has been established. The Head Ranger is to act as the technical assistant to the For- est Supervisor. He is appointed after having passed an exam- ination tending to show his qualifications, experience and effici- ency in forest work, especially in forest surveying, timber estimating, scaling, logging methods and the principles of gen- eral forestry. Two Head Rangers have already been appointed, also two technically educated men to the office forces. The Forest Reserve Manual contains full instructions to all Forest Officers in the service ; also copies of the rules and regu- lations to which the reserves are subject, and of all the blanks used in the administration, such as: Public Timber Sale, Free Use of Timber and Stone, Report on Mining Claim, Report on Grazing of Sheep. The maiuial is intended .solely as a handbook for the Reserve officers, but will prove instructive to all interested in the reserves and forest management problems in general. Sixth Annual Report of the Forest, Fish and Gayne Commission of the State of Nciv York. pp. 532. Numerous colored plates and half-tones. (By application to a senator.) The Commission, in its summary in this report, makes the fol- lowing important recomniciulations to the Legislature : Current Literature aiid Revieivs. 27 ' ' That the State Constitution be so amended as to provide for the practice of conservative forestry on the State lands (referring to a clause in the Amended Constitution, which forbids the cut- ting of any timber whatsoever on State lands), and for the sale of dead, dying and mature timber under proper safeguards. "That the excellent work done by the United States government in connection with our foresters, as shown by the report of the United States Forestry Department herewith submitted, be con- tinued and an appropriation of $3,500, as requested, be made for that purpose. (See Working Plan for Township 40, T. and C. P. Bulletin No. 30, Bureau of Forestry). That a force of rang- ers be appointed for the prevention of forest fires, timber stealing and poaching on State land. That all town fire wardens be allowed a moiety of the fine in criminal actions in cases where they can secure evidence that will lead to conviction for setting forest fires." The wisdom of one or two of these recommendations can per- haps be questioned. There seems to be no reason why the Bureau of Forestry should do forestry work for this State. The Commission has in Its employ men fully capable to conduct any forestry work ; if it has not enough of them it is in a position to employ more. Doubt may also be expressed as to the wisdom of the moiety system. It is little less than a system of bribery to do duty. By many, money thus given is looked upon as blood money. The system certainly lacks moral tone. If the State makes laws it should provide a service, competent and well paid, to enforce them. The introduction of a ranger system again in this State, as it formerly existed, would be folly. The rangers were in general what the game wardens are to-day, local officials, bound by the ties of kin, of friendship, of neighborliness, to nearly every man in their districts. The game wardens are prompt against a stranger, but the local offenders who go unpunished are number- less. A ranger service composed of men neither born nor bred in the locality of their service, a body of men with some instruc- tion in the aims and significance of forestry, well paid, allowed to have no other occupation, so that they regard their position as one of dignity, instead of a mere pick up on which a few spare 28 Forestry Quarterly. moments were to be spent, snch a body of men would prove of great value and honor to the State. Barring these exceptions, we believe that the recommendations of the Forest, Fish and Game Commission are good, and if acted on favorabh- and extensivelj' by the Legislature, will cause the culmination of the series of recent movements for the economic use of our forest wealth. New York will be the first to have established rational forest management, as it has been the first in all movements toward that end. The body of this year's report contains the most valuable mat- ter of any ever published. Bulletin 30. Bureau of Forestry. A Working Plan for Town- ship 40, T. and C. P., is reprinted. A History of the Lumber Industry in the State of New York. (See Bureau Bulletin 34, Bureau of Forestry), is of interest to the lumberman and industrial student. Mr. A. Knechtel, B. S., F. E., Forester to the Commission, contributes a clear, concise article on Methods of Estimating and Measuring Standing Timber. A Study in Practical Re-foresting. By J. Y. McClintock, C. E. Assistant Superintendent of Forests, is an account of a small plantation on the Girard Estate, Schuylkill County, Penn- sylvania. The following interesting data also appears. The amount of timber, log measure, taken from the Adirondack forests in 1 899 was as follows : Feet. Spruce, saw stuff 148,203,491 Spruce, pulp 195,568,623 Hemlock 46,545,772 Pine 33,132,807 Total, 423,450,693 Hardwood 24,296,654 Grand total, 447,747,241 Ninety-five per cent, of the lumber removed from the Adiron- dacks, it appears, was of coniferous trees, while the original stand speaking of the average is given by the same authority to have been 65'/ hardwoods. Speaking generally, therefore, it will be but a short time before the cut over lands of the region will be virtually pure hardwoods. Ctcrreni Literature and Reviews. 29 A History of the Lumber Lidustry in the State of Nezv York. By William F. Fox, Bulletin No. 34 ; Bureau of Forestry, De- partment of Agriculture ; pp. 59, PI. 30. This recent bulletin cannot fail to be of interest to all con- nected with lumber and lumbering in this State. To the student of economics, of industrial history, it will also be of value in por- traying the growth of one of the greatest industries of the country. The author. Col. William F. Fox, from a boyhood on the rafts and in the woods of the Alleghanies, to Superintendent of Forests in New York State, has been intimately connected with lumbering interests in the State. The history takes up the industry from its infancy, the pioneer with his ax hewing rough timbers and hauling them to town with his ox yoke ; and carries it through its growth to its splendid maturity, reaching its supreme excellence in the logging railroad, the steam skidder and the band saw. The intimate knowledge with which the author tells of the old rafting days, of the river driving with their attendant romance, excitement, danger, render the reading more like that of a novel than a prosaic bulletin or industrial history. Excellent chapters on the pulp industry, log works, tan bark and finally, a roll of the pioneer lumbermen are included. The Western Hetnlock. By Edward T. Allen. Field Assistant, Bureau of Forestry. Bulletin No. 33, Bureau of Forestry, U. S. Department of Agriculture. Pp. 55, PI. 23, Figs. 5. This bulletin is one of a series being prepared by the Bureau of Forestry treating of the individual tree species of commercial importance throughout the United States. It was especially undertaken for the direct economic purpose of overcoming the false prejudice existing in the lumber trade against the Western Hemlock, T. heterophylla. This magnificent timber tree is at present unrecognized in the trade because of the taint cast upon it by the reputation of the eastern species, and is only saleable by mixing small quantities of the best grades with the Red Fir and Spruce. In this valuable bulletin Mr. Allen treats of the methods of exploitation, sale and utilization of the hemlock, also giv^es tables of growth and notes on its silvicultural characteristics. He sum- marizes : 30 Forestry Quarterly. 1. The wood of the Western Hemlock is far superior to that of the eastern tree. It is suitable for use in all ordinary building work ; it furnishes good paper pulp ; it is sufficiently strong and light to make excellent hardware stock, and is particularly valuable for indoor finishing. The bark is half again as rich in tannin as that of the eastern species, 2. The Western Hemlock has now to contend mainly with a prejudice based on a knowledge of the eastern tree alone. Its qualities entitle it to rank among the valuable timber trees of the continent. 3. Under favorable conditions the Western Hemlock reproduces abundantly and grows very rapidly. Since these conditions are usually disadvantageous to Red Fir, Hemlock may often be counted upon to reforest cut over lands where Red Fir would probably fail to establish itself. A Working Plan for Forest Lands Near Pine Bhtff, Arkansas. By Frederick E. Olmsted. Bulletin No. 32. Bureau of For- estry. Pp. 49, PI. 9, Figs. 9. This working plan was made by the Bureau of Forestry at the request of the Sawyer and Austin Lumber Co. The object of the working plan was to determine whether the present tract of the company is large enough to furnish a sustained yield equal to the yearly capacity of tiie mill, and if not, to estimate the ad- ditional area necessary to secure .such a result. The holdings of the company consist of 105,000 acres, about 59^, of which is bare of merchantable timber. The land in the average is covered with a mixed forest of Loblolly and Shortleaf Pines and hardwoods, the pines forming something over 50'/^ of the stand. Passing over the silvicultural descriptions and deductions we come to Part III, Forest Management, in which several yield tables and interest calculations are given. Table No. 15, Page 44, Annual Interest represented by future cuts on the capital invested in cut over lands, does not seem de- duciblc from llie stumpa^e values and statement of yearly in- crement pL-r cent, as given. On the same page the following statement is made: '' Cutting to the advised diameter limit of 12 inches, breast high, or about 14 inches on the stump, with stumpage reckoned at $2.00 per Current Literature and Reviews. 31 1,000 board feet, and the value of cut over lands at $1.00 per acre, the average annual interest represented by the future crop on cut over lands is, for a period of 40 years, nearly 9%." Working out the example on the basis given we come to a very different result. Entering in the well-known formula for com- pound interest accumulation [Q = Q X (i.f/'" — i)] the given values, 6'=$i.oo, n^\o years, /' = 9, we get as interest charge for the land $1. 00 X (1.09*"— i) =$30.41 ; for taxes and cost of protection, which are figured (on p. 43) at 5 cents per acre per annum, an accumulation at the end of 40 years rC=4(i.^/'"-i)=-°5x3o.4i ] L .op .09 -■ of $16.89 accrues, or a total cost of product at 40 years of $47.30. On the other hand table No. 13 gives the yield per acre at the end of 42 years cutting to a 12 inch D. bh. limit as 6,067 board feet. Multiplying 6,067 board feet by $2.00, the stated stump- age value, we get $12.13 as the value of the cut per acre at the end of 42 years, i. e., the return is $35.17 less than it should be to yield a 9% interest. The real interest which the above quoted example will give is about 5>^ % ; this is considerably different from 9 % . Yet, even so, if a 5% return can be secured from a forestry investment it is a re- markably good investment, and the statement still remains true (Page 44), " that the application of practical forestry to the tract of the Sawyer and Austin Lumber Company would be a sound business measure." The Hardy Catalpa. — Bulletin No. 108 ; pp. 114, PI. 40. Kansas Agricultural College, Manhattan, Kansas. (Obtainable by application.) This bulletin contains a discussion of the methods of making catalpa plantations, and the probable profits resulting, also a col- lection of letters from the engineers of a number of railroads giv- ing their opinions of the catalpa as a tie producer. To the west- ern tree planter this publication should prove of interest and value. Seventh Annual Report of the Chief Fire Warden of Minnesota. By C. C. Andrews ; pp. 135 ; PI. 16. (By application Chief Fire Warden.) The Chief Fire Warden of Minnesota not only attends to the 32 Forestry Quarterly . duties concerning fire service, but in addition to those of a Forest Superintendent. In his report for 1901 Gen. Andrews has incUided, besides the matter directly relating to the State Fire Service, a series of de- scriptions of the forestry conditions in European countries. This matter will be found of value and interest, at least to the general reader. The number of reported fires in Minnesota during 1901 was fifty-five ; burning over 58,400 acres and doing estimated damage of $42,000. Proceedbis;s of the Iowa Park arid Forestry Association. First Annual Meeting, Ames, Iowa ; pp. 80, PI. 25. Price, 25 cents. The first publication from a newl)' organized society, it is an indication of the continued interest that is being taken through- out the country in forestry and allied subjects. American Public Health Association. Report of the Committee on the Relation of Forestry to the Public Health. By Prof. W. H. Brower ; pp. 15. The Berlin Printing Co., Colum- bus, Ohio. This pamphlet contains the most concise and accurate state. ment of the truths regarding the effects of forests on the public health that has yet been printed. Sierra Club Bulletin. Vol. IV, No. 2. Merchants Exchange Building, San Francisco. Contains a useful recapitulation of Conifers of the Pacific Slope : How to Distinguish Them. By John G. Eemmon. Science. Friday, September 12, 1902. This number of Science contains an article, " On Some Recent Advances in the Fireproofing Treatment of Wood," by Samuel P- Staller, which is a general review of the various processes of wood fireproofing, the qualities requisite in a satisfactory substance and method of impregnation, and finally a discussion of the Ferrill process. The White Ant. By C. L. Marlolt. Circular No. 50 ; Second Series ; Division of ICntomology ; Department of Agriculture ; Pp. 8. A short account of the white ant, its damage and the means of prevention. Current Literature and Reviews. 33 The Indian Forester. Calcutta, India. July. The Influence of Forests on Cultivation in the Hills. By Ram Swarup, D. D. R. White Ants as a Pest of Trees. Forest Administration in British India during 1899- 1900. We find here complete figures of the Indian administration, from which we take the following : Total area of reserved forests, 86,970 square miles, yielding a gross revenue of $6,370,000, and a net revenue of $2,661,640. Danger of Wood Pulp Paper. Publishers' Weekly. August. Fire Protection in Teak Forests in L/Ower Burma. By H. C. Walker. The Timber Resources of the Australian Commonwealth. By E. T. Scammell. In which the following figures are given : Total Area, Forested Area, Acres. Acres. Queensland 427,838,000 40,000,000 N. S. Wales 198,638,000 20,000,000 Victoria 56,245,700 11,797,000 S. Australia 578,361,600 3,840,000 W.Australia 624,588,800 97,920)000 Tasmania 16,778,000 11,000,000 Total 1,902,450,100 184,557,000 Dr. W. Schlich, C. I. E., writes of these figures that " only about 10% of the area of Australia is under timber forest, and enough has been said and written to show that these are on the highway to ruin. September. This number contains matter of home interest solely. Les7ioj Journal. Published bi-monthly by the Forestry Associa- tion in St. Petersburg. March-April. Square Plantations in Steppe Forests. By D. K. Domoslevsky. The Pine in the Chulym Basin in the Tomsk Province ; its usual growth and some peculiar ones ; based on the last re- searches in Siberian forests. By I. G. Frinden. A Basis for Regulating the Forests bordering the Amour. By P. Delle and V. Korsch. 34 Forestry Quarterly. Rate of Growth of Oaks in the Krapevense Forest. By V, Khichneseov. A Conference for Revising Freight Rates on Forest Materials. By V. Sobichevsky. Appraising Forests for the Purpose of Taxation. By E. Dam- berg. Insufficiency of the World's Timber Supply. — A criticism of the famous French article of 1900. May-Jicne. Manufacture of Charcoal in Maltzevv's Forests. By R. Behdevsky. Observations on the Life and Development of the Bark-eating Spruce-beetle (Bostrichus). By A. Voronzov. Annual Report of the Public Forests. Silviculture in the Forests of Osum. By N. Regisbevsky. SchweJzerische Zeitschrift fur Forstwesen. July. Forstliche Reiseskizzen aus den Diinen uud Landes der Gascogne. By A. Engler. (mit Abbildungen.) (Schluss.) A paper on the naval-stores indu.stry, as carried on in Gascony, in the extensive forests of the Maritime Pine. The two methods of obtaining the resin, by protracted but not intensive working of the trees through a number of years, and by rapid inten.sive "chipping" of the trees, which, under this management, give large amounts of resin for a few years, and the methods of .separat- ing and purifying the products are treated. August-September has little of general interest. Centralblatt fur das Gesavimte Forstweseyi. The Jul}' number contains : — Vorbeugung gegen Ueberschwemmungen. By Oberforster Franz Pollak in Hainburg-an-der-Donau. The old question of the influence of a forest cover upon precipita- tion and on the run-oflf is reopened and the conclusion is reached, mostly from a perfect knowledge of local conditions, that this is of considerable importance in relation to the run-off, tending in many ways to retard it and .so lessen its ability to do serious damage. Uebereinkunft zum Schutze der fiir die Landwirt-schaft niitz- lichen Vogel. Sets forth the articles of agreement and concludes with two lists of the u.seful and injurious species of birds found in the part of Europe covered. Current Literature and Reviews. 35 Die Holzverkoblung in Nord-Amerika. A brief review of the charcoal industry in the United States, the methods and the growth of the industry into the earlier primitive modern wood alcohol and acetic acid factories with their iron retorts for utilizing the wood most economically. Zeitschrift fiir Forst- und Jagdwesen. Forstliche Reisebilder aus Nord-Amerika. By von der Heyde, Kgl. Preuss. Forstassessor. Notes of a railway journey across the continent from San Francisco to New York and Washington. The Yosemite and Yellowstone National Parks were visited but elsewhere few stops were made in this apparently hurried tour. One of the most striking scenes and one that left the deepest impression on the author's mind was the desolate country in the track of forest fires through Washington, Idaho and Montana, the very regions in which he had expected to find heavy virgin forests. Revue des Eaux et Forets. August 15th. Le Deboisement des Pyrenees. By S. Guenot. September ist. La Lutte Contre Le Champignon des Maisons, By E. Henry. La Vannerie et L'osier. By G. de la Barre. September 15th. Le Sapin Tend a Supplanter le Hetre en Montague. By Joly de Sailly. Bulletin de la Societe Centrale Forestiere de Belgique. July. Le Nitrate de Sonde en Sylviculture. By J. Huberty. An extensive article with examples. La Dessoucheuse Bennett. A paper on an American .stump- puller, tion. August. Les Engrais Chemiques en Culture Forestiere dans la Region Ardennaise. By C. Delville. September. The conclusion of the article mentioned in the previous month. Les Forets de rAla.ska, translated from The Forester. Revista de Monies. July I St. Empleo de la Madera en la Fabricacion de Papel. By Juan A. de Madariaga. A short paper on the various methods of making paper and the various substances u.sed. Septeviber ist. Algunas Observaciones al Proyecto de las Obras de Defensa de Sevilla contra las Inundaciones. By H. del Campo. NEWS AND NOTES. THE FIELD SEASON OF THE BUREAU OF FORESTRY. This year has been the most active and fruitful one in the his- tory of the Bureau, one division alone, that of Forest Manage- ment, having had 104 men in the field exclusive of guides, pack- men, choppers, etc. The chiefs, number of aids, and objects of work being as follows : Subject. Sugar Pine. Lodgepole Pine. Working Plan Great N. Paper Co. White Pine and Hemlock. Southern Hardwoods. Working Plan for Linville Imp. Co. Balsam in Adirondacks. Forest Conditions of Otsego Co., N. Y. Log Scales in Black Hills. Northern Log Scales. Red Pine. Maine Cut-Over Spruce Lands. The following undergraduates of the New York State College of Forestry were in the field with the Bureau of Forestry during the past field season : Frederick Dunlap, W. P. Harris, S. McP. Higgins, J. M. Keeler, G. B. Lull, H. O. Stabler, R. E. Sheldon, A. C. Weed, K. W. Woodward, A. S. Williams, I. T. Worthley, W. J. Ward. No. of aids. Henry Grinnell, 7 G. E. Tower, 5 C. S. Chapman, 18 W. C. Hodge, Jr., 12 R. P. Imes, ID Alfred Gaskell, 4 G. S. Cleveland, 3 John E. Keach, 6 Franklin W. Reed, 3 R. G. Zon, 3 G. E. Clement, 3 Covert DuBois, - H. D. Tiemann, 2 H. H. Chapman, 4 R. S. Hosmer, 9 The Appalachian National Park Association has called a con- vention to be held in the Auditorium, Asheville, N. C, October 25th, 5 p. M., in the interest of the proposed National Park. Arrangements have been made with the Southern Railway Company for reduced rates. Invitations have been extended to the Boards of Trade of all the southeastern cities and a general one to all interested parties. Notes and News. 37 THE NBW YORK STATE COLLEGE OF FORESTRY. The College of Forestry, now four years old, has each year made a gradual but sure growth in the number of students, the number of registrations having been in the first four years 4, 17, 25, 44 respectively, and 72 in 1902. The requirements for admission were more strictly enforced this year, the number of applications having been greater than the faculty thought it desirable to admit. Ten graduates of other collegiate institutions were among the new men, some being obliged to take two years work and others three and four years for graduation. The following is a list of the men who have studied at the college, giving their present occupation : Philip Ayres, i year Sp. , Forester to the Society for the Protection of New Hampshire Forests. T. F. Borst, '01, Forester for the Metropolitan Water Board of Massachusetts. R. C. Bryant, '00, Forester, Bureau of Forestry, Manila, P. I. A. F. Cohoon, i year Sp., Assistant, Bureau of Forestry, Washington, D.C. R. H. Charleton, i year Sp., Assistant, Division of Forestry, General Land Office, Washington, D. C. W. W. Clark, '02, Forester, Bureau of Forestry, Manila, P. I. H. M. Curran, i year Sp., Field Assistant, Bureau of Forestry, Washington, D. C. Prof. C. H. Davis, Sp., Instructor in Forestry, University of Michigan. F. W. Fassett, Sp., Lumberman, Wellsville, N. Y. Alfred Haines, i termSp., Instructor in Forestry, Westtown Boarding School, Pa. Wm. B. Howard, i year Sp., Assistant, Bureau of Forestry, Washington, D. C. Abraham Knechtel, 'or. Forester, Forest Commission, State of New York. Wm. Klemme, Sp., Inspector, Bureau of Forestry, Manila, P. I. J. M. Keeler, ex-'o4. Student Assistant, Bureau of Forestry, Washington, D. C. C. F. Littlejohn, i year Sp., Lumber Firm, Michigan. L. Mazzanovitch, i term Sp., U- S. Ranger, Jackson, Wyoming. W. M. Maule, ex-'o3. Inspector, Bureau of Forestry, Manila, P. I. Walter Mulford, '01, Forester, State of Conneticut. C. R. Pettis, '01, Forester, Forest Commission, State of New York. E. P. Sandsten, Sp. , Horticulturist, University of Madison, Wisconsin. E. A. Sterling, '02, Field Assistant, Bureau of Forestry, Washington, D. C. A. V. Stubenrauch, Sp., Assistant in Horticulture, University of California. H. J. Tompkins, i year Sp., Field Assistant, Bureau of Forestry, Washing- ton, D. C. G. S. Van Wickle, ex-'o3. Inspector, Bureau of Forestry, Manila, P. I. I. T. Worthley, ex-'o3, Brooklyn, N. Y. R. Zon, '01, Special Agent, Bureau of Forestry, Washington, D. C. 38 Forestry Quarterly. The Keuffel-Esser Company of New York have just put an ex- cellent compass upon the market. It has a needle three inches in length, mounted in a brass box, with upright hinged sights. It is the ordinary surveyor's compass in miniature, and is provided with a ball and socket joint for mounting on a Jacob's staff. The instrument seems admirably suited for forest work. It is light enough to be carried in the pocket and used for valuation survey work, and accurate enough for running interior lines, mapping trails, roads, etc. Price, $io. Camp, ioo Mues Beyond all Signs of CiVIUZATION, NEAR BOLES PrINCIPE. P. I. August 30, 1902. My Dear Sitting here in my tent and waiting for the rain to stop so that we can go out on a valuation survey, I will write a line to 5'ou who certainly think I have forgotten all my old friends. The last three months have been full of haste and hurry for me. I left Hagger and the Camarines at two hours' notice, went a few days with Bryant, a little while in Manila, and then had to start for this forlorn part of the world. In mv party are two American boys and one Philippino botanist. It took us fifteen days to make the trip from Manila. This is the wildest part of the islands ; a few huts and soldiers' barracks are all the signs of civilization in the region, and they are so far from the woods that we have to stay in camp near the place of our work. Our present camp is .situated on the very rocky sea coast, near a small river. The river has three water- falls, one of them 100 feet high. The region is all very nice and picturescjue, but rather rough for work. There are no trails, and every step we take has to be first cut out. The work is, there- fore, very difficult and .slow ; we never can finish more than six to eight acres per day. Frequent rains keep us often in camp ; that means in a leaky tent. This week we could get out only three days. I had to take all our provi.sions from Manila ; canned food is all wc have. Notes aud News. 39 Captain Ahern will send VanWickle out here as soon as he ar- rives from the States. I will be very glad of that. It will make my work much easier, having another forester here. Last week we made a long trip up the water shed. Having no trail we had to follow the bed of the river. In one day we had to cross the river or some of its tributaries exactly fifty times. The water in some places was four feet deep, and the current so strong that we had to form a chain to resist the current. An- other trip brought us to the mountains inhabited by the Glougates, the so-called head hunters. Here we had an escort of six soldiers and came out safely. William Klemme. At the Yale Forest School thirty-eight students are registered, twenty-five of them being new. The school at Biltmore also shows a marked increase, eighteen students having already arrived. It is probable that this year as formerly more will enter later. The University of Nebraska, the University of Michigan and the Michigan Agricultural College are offering short courses in forestry branches. The University of California is seriously considering the estab- lishment of a forest school. President Wheeler recently issued a statement calling for endowment funds. w.>»v- CONTENTS. PAGE Announcement i Cotta's Preface 3 Volume Tables and the Bases on which they may be Built — 6 Judson F. Clark Diificulties and Errors in Stem Analysis A. S. Williavis 12 Adirondack Birds in their Relation to Forestry 18 E. A. Sterling Current Literature and Reviews 26 News and Notes 36 fe; Vol. I No. 2 Forestry Quarterly PUBLISHED UNDER THE DIRECTION OF A Board of Advisers of the Faculty and Alumni OF THE New York State College of Forestry CORNEIvL UNIVERSITY Ithaca, New York 1903 FORESTRY QUARTERLY Managers for t/ir '02-J Asa S. Williams Albert F. Siebold . ,v,,,<,.,xi^ IC DUNLAP Cl..' i'T Board of Advisers Bernard E. Fernow, LL.D. John Gifpord, D.CEc. Waltk" ^^"'ford, B.S.A.,F.E. THE OBJECTS lOK WHICH THIS JOURNAL IS PUBLISHI To aid in the establishment of rational forest management. To offc , I he publication of technical papers of interest to professional foresters in America. To keep the profession in touch with the current technical lit- erature and tl)'-- <•■■••-'- :■ ••' •- "•' TT..:.. ,, 0..,.. .^ •subscript ii \NDRUS& CHURCH, ITHA FORESTRY QUARTERLY. Vol,. I. January, 1903. No. 2. OUTIvOOK OF THE TIMBER SUPPIvY IN THE UNITED STATES.' As Cotta pointed out a hundred years ago, forestry is a child of necessity. It is only when the wood supplies grown by unaided Nature are exhausted or near exhaustion, and when it becomes apparent that reproduction is not replacing the harvested virgin crop as rapidly as required, that forestry — systematic utilization and reproduction of wood supplies — becomes necessary. While much has been said and written regarding the influence of forest cover on climate and waterflow as calling for the appli- cation of forestry, it should be understood that these considera- tions apply mainly to specified localities, that some of the claimed beneficial influences are often questionable or at least unproven, and that moreover, the forest effects may be secured incidentally ; the supply question remains uppermost, and is the more important. It behooves, then, every forester to find justification for his art and for his own existence in the answer to the inquiry which will bring out the fact that natural supplies are waning, and are not being replaced as fast as consumed. Such inquiry involves knowledge on one hand, of the consump- tion of wood products in the given country, the possibility and probability of substituting other materials, and the opportunity of supplying it wholly or in part, by importations and, on the other hand, knowledge of the amount of standing timber ready for use, the condition of the forest areas, as far as promise of reproduction is concerned, and the rapidity with which such new growth may become available. ' Presented before Section I, American Association for the Advancement of Science, Washington, D. C, 1902. 42 Forestry Quarterly. Ten years ago, the Chief Geographer of the United States Geological Survey came out in print ' refuting the writer's con- tention that a more conservative and rational forestry policy in the United States was needed, because, he asserted, the relations of forest growth to climatic, soil and water conditions are pre- sumably of no practical significance, and because, in his opinion, the timber growth in the United States is certainly renewing itself much faster than it is being consumed. This year, by a peculiar irony of fate, the Chief Geographer, now also in charge of the survey of the Federal forest reserva- tions, furnishes as compiler of the Statistics of the Lumber In- dustry, in the Twelfth Census,^ the most satisfactory data upon which to discuss the supply question, and to prove his position of ten years ago wrong. As I have pointed out elsewhere,^ both the gathering and the interpretation of statistics of forest industries are beset with more difficulties than are encountered in most other industries, largely because of their very diversified character and the very scattered and inaccessible locations of their sources. All census statistics have the tendency to remain below the truth — ' ' some little pigs will not let themselves be counted " — and the statistics of forest pro- ducts are probably more subject to this defect than others. The final object of census statistics is, of course, to furnish basis not only for comparison between the various industries, bringing out their relative importance, but also to record the progress of development from decade to decade. Unfortunately, for this last object e.specially, the absence of a uniform method of enumeration from Census to Census, added to the variable success of enumerators in securing information, ren- der the data of uneven value ; a direct comparison would lead to erroneous conclusions ; proper allowances must be made for de- fects, variable from Census to Census, and only very general de- ductions as to tendencies are admissible. With this warning against the mathematical use and interpreta- tion of available forest statistics, we propose to present the data of 'Washington Evening News, April i, 1893, and other places. ' Vol. IX, XII Census, Selected Industries, pp. 805, 1902. 'Quarterly Publication of the American Statistical Association, December, 189S. Outlook of the Timber Stt-Pply. 43 the last Census and draw our conclusions as to Wv^ probable status of the timber supply question in the United States. The census of 1900 for the first time seems to have secured tolerably full, although still incomplete, statistics of the lumber in- dustry of the United States, which show that the estimate of the writer, made a few years ago, of 40 billion feet B. M. annual consumption, including all material requiring log and bolt size, is as near the truth a« it can possibly be stated, for the saw mill product is placed by the Census as 35 billion feet, precisely the amount which the writer deduced from the reported saw mill capacity in 1898,^ and the allowance of five billion feet for unenu- merated amounts, staves and headings, railroad ties, round and hewn timber used locally, telegraph poles, etc., is, indeed, hardly sufficient. Since, however, in the census statistics there are un- doubtedly duplications, we may perhaps still adhere, for all pur- poses of economic discussion, to our round figure of forty billion as representing fairly the present annual consumption. The summary of the Census (1900) of the saw mills, planing mills and timber camps stands as follows, saw mill product, output of plan- ing mills, custom work, etc., and product of timber camps being mixed together : Number of establishments (reporting or existing?) 33,o35 Capital invested 1611,611,524 Salaried officials, 12,530 11,260,608 Wage earners, 283,260 104,640,591 Miscellaneous expenses I7.73i.5i9 Cost of materials used 317,923,548 Value of products, total 566,832,984 Saw mill |422,8i2,o6i Planing mill 107,622,519 Timber camps 36,398,404 Quantity of sawed lumber, M. ft. B. M 35,084,166 Value of same 1390.489,873 The figure of $318,000,000 represents the cost of the logs and all other materials at the various mills which produced the 35 billion feet of lumber and whatever other products were produced in the mills. Discrepancies between the total reported output of the logging camps (26 billion feet) and that of the saw mills amounting to nearly 40 per cent. (!), are explained by the com- ^ H. Doc. 181, 55th Cong., 3d Sess., p. 119. 44 Forestry Quarterly. piler as due to failure of small concerns reporting on the former and to increase in the scale at the mill. There is enough con- fusion in the various tabulations to also produce various differ- ences in other aggregates. The saw mills alone seem to have produced from materials valued at $226,000,000 a product valued at $423,000,000. In ad- dition to the 35 billion feet of lumber valued at $342,000,000,* representing 81 per cent, of the whole, the following materials were produced at the mills : Value, Material. Quantity. Million Dollars. Shingles M. 12,102,007 18.9 Hoops, M. 441.327 2.7 Staves, M. 1,664,792 13.7 Headings, M. 124,089 4.3 Bobbin and spool stock, M. ft 40,037 .5 Furniture stock, M. ft 105,305 1.9 Agricultural implement stock, M. ft 33,250 .6 Carriage and wagon stock, M. ft. 82,686 1.8 Pickets and paling, M. 35,804 .3 Laths, M. 2,523,998 4.7 All other sawed products 19.6 The mill product outside the lumber value was therefore round $70,000,000. While these represent reported amounts from regular mills and logging camps connected with them, the independent lumber camps added 3383 million feet of logs cut for mills, valued at $20,600,000, and other materials, like logs for export, hewn timber, railway ties, po.sts, poles, masts, spars, handle and cooper- age stock, etc., aggregating about $15,000,000. One very important item which apparently is not included in the above statements, the pulp wood, forms the subject of a special census, and adds over two and one-half million cords of log or bolt size material to the above. The consumption of this manu- facture alone has more than trebled in the last decade. In addition to these enumerated amounts, there must be allow- ance made, not only for what has escaped the enumerator in the regular wood consuming establishments, but also the ver}' large ' In another table this is reported as ^385, 298,304, and the value of ma- terials also figures differently. Outlook of the Timber Supply. 45 amount of fuel wood consumption and other wood cut on farmers' wood-lots for home use, which in some other part of the Census is valued at round $110,000,000. According to the Tenth Census, our consumption of fuel wood was at that time 146 million cords, or 2.9 cords per capita. Assuming a substantial per capita reduc- tion of this item, owing to increased use of coal, we may still place the present fuel-wood consumption at not less than 180 million cords. Now, in order to place all these items in a form which makes them comparable to statements of wood production, it becomes necessary to translate them into a unit measure, the cubic foot. Such reduction brings the consumption of material for which log and bolt sizes are indispensable con.servatively to about 7 billion cubic feet, (probably nearer 8 billion,) and since most of our fuel wood is cut from similar material, we are perfectly safe in placing our total consumption of " timberwood " (over 3 in. diameter) for this general discussion at not less than 25 billion cubic feet, an average figure which the writer has used before as sufficiently near for an average of the last decade. The next question is, are we increasing or decreasing our wood consumption ? That, as the population increases, our total con- sumption increases, will appear natural, but that the per capita consumption has also constantly increased in spite of the enor- mously increased production of coal, iron, steel, and the use of other substitutes, will not so easily be admitted. For such an in- vestigation, the defects in the gathering of census statistics above cited become fatal. Nevertheless, if the disproportionate differ- ence between the increase of population and of the consumption is very large, we are safe at least to recognize a tendency. Taking the census figures as reported for the lumber industry for the last five decades, the increases from decade to decade show the following percents : i860. 1870. 1880. 1890. 1900. Cost of raw materials 57 132 41 66 31 Value of lumber product _ 60 117 II 88 29 Increase in population^,. 36 23 30 25 22 Or, if we compare conditions at the beginning of the period (1850) and at the end (1900), in the 50 years the population 46 Forestry Quarterly. grew by 4.6% 'per annum in the average, namely from 23.2 to 76.3 million, the value of lumber product by 17%, namely from 60.4 to 566.8 million dollars, and the cost of materials by 20% > namely from 28 to 317.9 million dollars. Making every allowance for defects in the statistics and for advance in prices, the difference is so large that a great increase in wood consumption per capita can be confidently deduced. If we compare only the figures for the last 20 years, which are more reliable, we find the Tenth Census recording the value of products at 233 million dollars, with a saw product of 18 billion feet, as against the last Census, reporting 567 million dollars and 35 billion feet saw product. In other words, the quantity has doubled, its value nearly trebled, in these 20 years, indicating a change in value of 7 per cent annually in the average (or 4^^ per cent compounding) and an increase in material of 5 per cent in the average (or 3)^ per cent compounding). The popu- lation during this period increased by 2.5 per cent in the average, or, compounding, at 2 per cent, so that it appears that our per capita consumption of lumber alone has increased at a compound rate oi i}4 per cent, or an average rate per annum of 2)4 per cent during the 20 years, not including exports, imports or much other material not reported. To assure us that this increase in per capita consumption is a feature of modern industrial activity and higher civilization, not confined to the United States, but pertaining to all civilized nations, we may look at the import statistics of other nations, which give quantities as well as values. Great Britain, which is practically dependent on importations, has large resources of coal, iron and stone and hence uses wood probably, most economically, has increased its imports during the last forty years at the rate of over 5% in the average (or com- pounding at the rate of nearly 3%) while the population increased by less than i % per annum. ' These figurings are at simple interest on the basis of the figures at the beginning of the period. If a compound interest calculation is made the in- crease in consumption will be found at the rate of somewhat more than 5 per cent, in cost of materials, while the population increased at somewhat less than 2^ per cent., making the annual per capita increase in consump- tion nearly 3 per cent, compounding, in which allowance for increase in price is to be made. Outlook of the Timber Supply. 47 France, which is also relying upon imports to a very large extent shows a still more striking increase of importations namely 10% per annum for the last 70 years, while the population during the whole period increased only 20%; here progressive deforesta- tion may account for the great increase of imports. But in Germany we know the cut at home has constantly in- creased during the last 40 years or more, and yet the importations have also increased. While in 1863 her exports of forest pro- ducts still exceeded her imports by 125,000 tons, after that year a remarkable change has taken place, and today Germany is next to England the largest wood importer in the world, with over 4500 thousand tons excess over exports, worth over 75 million dollars, an increase of 10% per annum in the average for the last 40 years, (or, compounding, at the rate of over 4%) while the population increased only 38% during the whole period. Even the fuel wood consumption in Germany has not decreased in proportion to the coal consumption, for from 1872 to 1896 the latter increased 103% , while the fuel wood consumption decreased only 18%, All of which goes to show that a higher civilization and in- creased industrial activity make more demand for such a service- able material as wood. In spite of substitutions, new uses arise to keep up the demand. And we in the United States who in the sight of plenty are not wont to save, will probably continue to increase our per capita consumption for some time at least at the rate of Germany. How are these increasing demands to be supplied ? When we have used up our own stores, are there any others to draw on ? Here we must first of all make a sharp distinction between the kinds of wood that are needed for use in the arts. Some years ago the writer was taken to task by one of the lumber trade journals for asserting that the consumption of co- niferous ' softwood ' material represented ^ of the total lumber wood consumption, to which the pines contributed to the extent of 50%. The present Census brings out precisely this proportion, except that if the pulpwood is added, the importance of the conif- erous material is still further accentuated. The relative importance of the different species is for the first time more fully and very satisfactorily brought out by the Census, permitting the following tabulation : 48 Forestry Quarterly. Conifers. White Pine Southern Pine (several species) Hemlock Spruce (and Balsam?) Cypress Norway Pine Cedar Tamarack Eastern section Red (Douglas) Fir Hemlock Yellow Pine (western) Redwood _. Cedar Sugar Pine Tamarack Western section All others Total Hardwoods (broad-leaved). Oak (various species) Poplar (Tulip) Maple Elm Cottonwood Basswood Gum (Red) Ash Chestnut Birch Hickorv Black Walnut Sycamore All others Totals Quantity. Million feet B. M. 7483 9580 i860 1448 496 259 115 9 1736 1560 1000 360 118 54 42 4438 11^5 633 456 415 308 285 269 207 133 97 39 30 208 21,250 4,870 33 26,153 8,633 34,786 Value. I Stumpage. Thousands j Average values, dollars. Dollars per M ft. 94,980 80,726 17,832 16,323 6,604 3,022 1,283 104 15,050 16,305 9.235 3,646 1,260 659 338 1,114 268,481 61,174 15,646 7,495 5,240 4,304 3,955 2,748 4,264 2,764 1,658 1,815 1,412 328 4,015 116,818 3-66 1.20 2.56 2.26 1.58 2.88 1.32 1. 00 •77 1. 12 1. 00 1.96 3- 18 2.81 2.66 3-30 1.45 1.50 1.68 3-03 2.71 5-00 The White Pine still leads the li.st, although the three or four southern species of pines aggregated, exceed it in quantity, though not in value. The relative accessibility to large quantities of supplies predetermines, of course, largely the relative po.sition, especially of the coniferous species, which can be readilj^ substi- tuted by each other. The stumpage prices given in the table, which are based on lumbermen's statements of the values of their holdings, are, in most cases, considerably below the actual prices now paid. Outlook of the Timber Stipply. 49 To the statement for spruce, at least 1000 million feet must be added for wood pulp, and for other species contributing to the same industry, 300 million ; the cut on farms, which is placed at nearly no million dollars in value, in part log and bolt size ma- terial, not brought to mill, will have to be considered, probably, for the most part, in the hardwood cut. The hardwoods, to be sure, furnish the bulk of the fuel-wood, and when it comes to a mere statement of wood volume, represent, probably, the larger requirement of the total consumption, at least in the United States. Nevertheless, in the arts and industries, the softwoods are the important. These are to be found in quantity QvAy in the north temperate zone, precisely that part of the world where the wood consuming civilization is most highly developed. The southern countries produce mainly the highly ornamental but exceedingly hard woods, which are only of limited application, hence relatively less important. The densely populated, highly developed European countries satisfy their requirements in excess of home production from the less developed, thinly populated countries to the north and east, Russia, Norway, Sweden. Austria-Hungary, as well as from Canada and the United States. The United States must rely upon its own resources and what- ever her neighbor, Canada, can spare from its trans- Atlantic trade with the mother country. In the next paper, it is proposed, to discuss the conditions of supply to meet our requirements. B. E. Fernow. NATURAL REPRODUCTION IN THE ADIRONDACK FORESTS. During the summer of 1901 , the writer was employed in making a study of the reproduction of the commercial trees of the Adiron- dack mountains. The work was done on Township 5, Hamilton County, in connection with a forest survey of the township, made at that time for the Forest, Fish and Game Commission by the U. S. Bureau of Forestry. A proper policy for the treatment of our forests depends, of course, upon a knowledge of the reproduction of the trees. Such knowledge is the more important because forests grow slowly. With annual crops, a year or two may suffice to demonstrate the truth or falsity of a theory ; but with forest crops it may require a century for such demonstration. A proper forest policj' has in view a perpetual forest of desirable species, and if any species is to be kept in the forest by natural generation, the degree of cutting must depend upon the facility with which it reproduces itself in comparison with the reproduction of other species on the same ground. General impressions of the manner in which reproduction goes on in the forest, or in fact, of any phenomenon of the forest, are of little value. Conclusions should be drawn only from definite and thorough study of the subject. The method followed in making mj' study was about as follows : — Quarter-acre circles were chosen here and there over the township referred to, but were selected so as to give variety of conditions. Two young boys assi-sted me. The radius of the circle was actually measured, the boys running out from the center a tape line to the distance of 59 feet. The trees just outside the circumference were blazed, not only for the sake of accuracy, but so that I might be able at any future time to find any one of the circles, in case such might become important. The boys then measured off within this blazed circumference eight squares, each 10 feet on a side, mark- ing the corners with small stakes. These .squares were taken upon the forest floor proper, evading old decaying trees that had fallen upon the quarter-acre plot. From each of these .squares the boys pulled up all the little growth of the commercial species. This was done in order to get an actual and accurate count. Nahiral Reproduction hi the Adirondack Forests. 51 The plants were separated into their different species, and each species was divided into three classes which were called germi- nated, seedlings, and juveniles. In the softwoods, or evergreens, plants so young that they had not yet begun to branch, were called germinated. Plants that had branched, but were not more than six inches high, were called seedlings, and plants more than six inches high but not more than one inch in diameter, were called juveniles. In the opposite-leaved hardwoods, the ash and the maple, a plant was not called a seedling until it had three sets of leaves above the cotyledons or seed leaves ; and in the alternate- leaved hardwoods not until it had four leaves above the seed leaves. The seedlings and juveniles were classified as in the soft- woods. A count and record were made of the number of each class of each species. The counts on the eight squares were add- ed together, and the sum was multiplied by 13.61 to determine the growth upon the quarter-acre at the same rate. Attention was then given to the old, rotting trunks that had fal- len upon the quarter-acre plot. The boys pulled up all the little trees growing upon them, and these were classified and counted as already described. All the trees above one inch in diameter found on the quarter- acre were then calipered. Measurements were read to tenths of an inch. These larger trees were also divided into three classes for each species, called polewood, small timber, and large timber. Polewood consisted of trees from i to 6 inches in diameter, the latter inclusive. Trees from 7 to 10 inches were called small tim- ber, and trees above 10 inches, large timber. It was thought that other species of plants found upon the circle might have a bearing of some importance upon the question. A list was made of all these as far as the species could be determined. Record was also made of the location of the circle, of the degree of slope, and of the exposure of the plot. The degree of light ad- mitted through the crown cover was stated in numerals from i to 10. Note was made of habit of growth, habit of branching, form of bole, and, in fact, anything that would furnish a useful record. It was intensel}' interesting to note the manner in which the re- production was going on. The pine, spruce, and hemlock were, of course, regenerating only from seed. Under the conditions pre- vailing on that township — virgin forest, dense shade, much duff on 52 Forestry Quarterly. the forest floor — these species were reproducing almost entirel}' on the old, decaying tree trunks lying in the forest, and these trunks were themselves pine, spruce, and hemlock. They were not repro- ducing on old, decaying beech, birch, or maple trees. Occasionally an old hemlock was found literally covered with little spruces and hemlocks, while on the forest floor not a small tree of these species was to be found upon the quarter-acre. Patches of young spruces, from one to five or six feet high, were found apparently as if they had germinated on the forest floor, but upon close examination these were generally seen to be arranged in rows, which would in- dicate that they had come from some such seed bed as old logs. Frequently, too, the undecayed knots of an old hemlock could be kicked up along the row. It is true that these species were also found germinating and growing on the forest floor. It was only, however, where the mineral soil was exposed, and this is of rare occurrence in the virgin forest ; usually it occurs only on steep slopes and at the roots of upturned trees. Even in forests where lumbering has been carried on, unless fire has burned off the humus, the mineral soil is not much exposed. Skidding tears up the soil to only a slight extent, not enough to warrant the assumption that a seed bed will thus be furnished to reproduce the softwoods in sufficient numbers to keep up a forest lumbered periodically. When fire goes through a softwood forest, leaving here and there a seed tree, the young growth comes up in abundance, for the reason that the fire not only burns off the humus, exposing the mineral soil, but it leaves a covering of ashes just suitable, when leached into the soil, for encouraging the growth of the trees ; in fact, just the mineral matter that the burned trees took from the soil, the fire driving off into the air only the elements obtained from the air. Along the line of the Canada Atlantic Railway from Otta- wa to Parry Soinid can be seen miles of young White Pine as dense as it can stand, where the fire has left only here and there a tall pine with foliage, among the many dead, desolate remains of the once flourishing forest. Until spruce began to be lumbered for pulp, many large, defect- ive trees were left in the woods by the lumberman, and even now where pine is lumbered not all the trees are taken. It is well known that defective trees often produce more fruit than those that Natural Reprodzcdion in the Adirondack Forests. 53 are sound. It is a common practice among orchardists, when wish- ing to remove an old orchard, to girdle the ,trees a year before re- moval in order first to secure a large crop. Yet, where lumbering in the mixed forest has been carried on periodically, if a forest is left at all, it is bound to be a hardwood forest. In the great pine forests of Canada, which the lumberman has cut over even only the second time, the scarcity of young pines is remarkable. If a fire runs over these lumbered forests leaving a sufficient number of seed trees, a larger number of young pines will appear. If, however, this young growth is again soon de- stroyed by fire it will not reappear in the same abundance, as many of the seed trees will be killed. In a forest lumbered periodically, the regeneration of White Pine, spruce, and hemlock is, then, largely dependent upon the exist- ence of a good mineral seed bed. In the virgin forest they repro- duce on old fallen, rotting pine, spruce, and hemlock trunks, and are found very rarely on the forest floor. The balsam and cedar in the dense forest reproduce somewhat more freely. In places where the light is abundant they do fairly well on the forest floor. The cedar reproduces abundantly from seed in old pasture fields. In the swamps it is frequently regenerated from root suckers. The hardwoods, especially the maple, birch, and beech, repro- duce freely everywhere. The abundant regeneration of these as compared with that of the softwoods is everywhere noticeable. Almost any kind of a seed bed seems to be sufficient for them. The softwoods are more exacting than the hardwoods in regard to light requirements and are more easily injured by frost. Nurserymen are careful in raising conifer seedlings to see that the plants are shaded from the hot glare of the sun, and that the screens are removed in continued cloudy or wet weather. In the winter the beds are well covered with leaves to protect the plants against the frost. No such careful treatment of hardwoods is necessary. In the forest, then, it is only where the light condi- tions are good, and sufficient protection is afforded in the winter that the conifers can be reproduced. But it is not only in the matter of seed bed and light conditions that the hardwoods have the advantage, for they also sprout from the root. Beech roots run frequently above the surface of the soil, and these when wounded, as by the skidding of logs, send 54 Forestry Quarterly. up bunches of suckers. Groups of from two to ten trees of maple, birch, basswood, or in fact nearly any species of hard- woods, can be frequently found growing from the same root. It is common in the woods to see four or five basswood trees thus situated, each more than a foot in diameter. To be sure, such shoots from stumps or root are generally short lived, but they take up the light space, and live long enough to produce seed. To replace a softwood tree that is taken from the forest, another must be grown from the seed ; but when a hardwood tree is re- moved, many may spring from the root. In case of fire, the hardwoods, as is well known, have the ad- vantage. The softwoods are more open in structure of wood, have thin bark, especially when young, and are resinous and hence more easily burned. The hardwoods are not easily burned. They are so resistant that a belt of hardwoods is often planted as a protection to the softwood forest. Since the hardwoods have the natural advantages mentioned, it is evident that if the softwoods are to be maintained or increased in the forest, they must receive artificial advantages. In a mixed forest such advantage might be given by the removal of the hard- woods, leaving the softwoods. This could be done only gradually, for with a rapid removal of hardwoods the softwoods would be overturned by the wind. It is well known, however, that trees adapt themselves to changed conditions when these are brought about gradually, and with a gradual removal of the hardwoods the softwoods would send their roots deeper and become wind firm. Hardwoods, however, are difficult to remove. They are heavy to handle, and since they float only with difficulty they cannot be sent down the streams. It is only near large cities where fire- wood is in great demand that the market is strong. Even if they were removed, as the softwoods are very choice of seed bed, the latter would not be reproduced sufficiently without special preparation of the soil. With such preparation of the soil it would not be necessary to depend entirely upon the seed trees upon the ground, but seed might be collected from other trees and sown in the forest. Perhaps the best artifical advantage that can be given to the softwoods is to raise them in nurseries from the seed, and trans- Natural Reproduction in the Adirondack Forests. 55 plant them into the forest. That this is practicable and can be done at little expense is shown by a plantation of half a million trees, made last spring, in the Adirondack mountains, near Lake Clear Junction, by the New York State Forest, Fish and Game Commission. Over seven hundred acres of land was planted. The total cost, including the purchase of the plant material, was only $2,500, or half a cent a tree. It is diflScult to give a definite statement of cost per acre. The area planted contains marshy places, ledges of rock, logs, stumps, and large bowlders. The more of these, the less, of course, was the cost per acre, as such places had to be skipped in the planting. No two large areas will have the same topography. Any other area of 700 acres would differ considerably from the tract planted, and hence would differ in cost per acre of planting. Perhaps the fairest way to treat the matter is to give the cost per tree, which, as stated above, was half a cent. It should be stated, however, that this exceedingly low cost is largely due to the fact that the College of Forestry furnished the plant material at less than cost price. Credit is also due the Col- lege for being the first to attempt such planting into the brush and to demonstrate its silvicultural success. At Axton, where it planted four years ago in the slash, and at Foresters where, three years ago, a plantation was made in the lumbered forest, it is estimated that 80 per cent, of the plants are still alive. The choice of land made by the Commission evades the diffi- culty of removing the hardwoods, as their planting is done on burned lands, of which there are 60,000 acres in the Adirondack Park. Every state has, no doubt, similar areas which afford an excellent opportunity for planting. A. Knechtei,. ON THE FORM OF THE BOLE OF THE BA.LSAM FIR. Two days leisure on the banks of the Raquette River in the Adirondacks where pulpwood was being cut gave opportunity for measuring the boles of ninety-four Balsam Fir trees. The num- ber is far too small for a satisfactory study, but the results were so suggestive that they are presented here in the hope that some- one who has leisure and opportunity may be inspired to take up the task of determining more accurately the constant for this species. The trees measured grew on a sandy loam of somewhat swampy tendencies on the east bank of the Raquette River, Township 23, Franklin County, New York, at an elevation of about 1600 feet. The trees varied in diameter from 6 to 14 inches, and in height from 50 to 76 feet. A majority were approximately 60 years old, while a minority varied from 45 to 160 years. They were almost all quite sound and of thrifty growth. The measurements were taken in the metric sj-stem to facilitate computation, and com- parison with the volumes given in Baur's and Schiffel's volume tables of the Norway Spruce. For the purposes of this note the more important measurements have been translated into feet and inches. The stems were measured sectionwise, the sections being two meters long. The diameter was measured at the center of each section by calipering twice at right angles, the average of the two readings correct to the millimeter being taken. The diameter was similarly measured at ^ and Y2 height. Wherever irregularities were met the diameter was taken above and below the point and the mean taken. The total length of stem was noted, also the length of top above a diameter of 4 inches. The accompanying figure represents graphically the form of the stem of two average and two individual trees. The height of the figure vertically representing the tree height of 65 feet. The diameters are represented on a somewhat larger scale horizontally. The line at the center of the figure represents the middle point of the boles. The curved lines representing the outline of the boles terminate at breast-height which was the lowest point measured. The heavy full line represents the average form of 14 trees of 65 feet in height. The influence of the enlarged base of the bole (root-swelling) is appreciable at the breast-high point, and gives S>ocV»a«x Z\r At 5«^ Form of the Bole of the Balsam Fir. 57 the stem a neiloid form. At a height of about 11 feet this neiloid form changes over to that of the paraboloid which obtains to the top of the tree, becoming to be sure more and more conical as we near the top, but never quite assuming the form of a true cone. Similar average diameter measurements of stems of other heights indicated in each case the same essential features, viz., that the bole above the neiloid portion at the base is fairly cylindrical up to the middle point, and that beyond this it falls rapidly away to a conical form which terminates in a very long slender conical top, averaging, in the 65-foot trees, 16 feet above the 4 inch diameter point. The heavy broken line of the figure represents the average bole of a Norway Spruce of the same height and the same diameters at breast-high and the middle point. ^ It will be noticed that up to the middle point the variation was so slight that it could not be represented in the figure, but that in the upper half of the bole the Balsam Fir is markedly more conical than the Norway Spruce. The volume of the bole above the 4 inch point (the un- merchantable portion when cut for pulp) proved to be about 3% of the whole stem in the trees measured. This is noticeably larger than that of the Red Spruce of similar dimensions. As intimated in a previous paper ^ the form factors of all the stems were calculated from the sectional measurements and were com- pared with the form quotient obtained by dividing the breast-high diameter (af) into the middle diameter (S) multiplied by 100. The results for the individual trees were classified according to breast-high diameter, height, form factor, form quotient, and age. The facts brought out by this classification will be indicated briefly in the following paragraphs, and while the small number of trees examined must not be overlooked, the results as far as the data went were sufficiently uniform to induce the belief that they are in the main correct. Form Factor: The average form factor for the 94 trees was 45.7. That it fell with increasing height, as all form factors based on the diameter at breast-high must fall, goes without say- 1 Form und Inhalt der Fichte : Adalbert Schiffel. Mittheil. a. d. Forstl. Versuchsw. Osterreicbs. Heft 24. 1899. * Forestry Quarterly, Vol. I., No. i., p. 11. 58 Forestry Quarterly. ing It also fell with constant heights but increasing diameters, indicating that the more thrifty trees were relatively more conical. This fall in the/ was approximately one point for every increase of .8 inch in diameter. Form Quotient: The average form quotient (^j^) was 67.57. The form quotient was found to be influenced in character and amount in an almost entirely similar manner as the form factor. This will be fully shown by a study of The Constant: The constant (<:), i.e. the difference between the form factor and the form quotient, was found to be 21.87 on an average of the 94 trees. Variations in height were without in- fluence upon it as is shown by the following summary : Number Height. Constant of tret Trees under 54 feet. 21.6 3 54 to 61 " 21.8 21 " 61 to 67 " 22. 43 " 67 to 74 " . 21.3 17 " over 74 " 22.1 10 Variations in diameter were also without appreciable effect. The diameters and their constants are as follows : Number of trees. 18 23 23 16 8 The data are as follows : Number of trees. 10 43 9 15 8 The only consistent variation observed in the c was a gradual rise with the rise of the form quotient and form factor, the former rising slightly more rapidly than the latter, due, apparently, to a relatively more sudden tapering off above the middle point in trees which are more cylindrical in the lower half of the bole. This variation is of practical importance in volume determinations Diameter. Constant. 8 to 9 inches 22.2 9 to ID " 22.2 10 to II " 21.6 II to 12 " 21.0 Over 12 " 21.6 )ns in age were without effect. Age. Constant. Under 50 years Between 50 and 60 years " 60 and 70 " 22.1 21.2 21.5 " 70 and 100 " 21.8 Over 100 years 21.8 Form of the Bole of the Balsam Fir. 59 where the form factors of the sample trees are taken from stand- ing trees by the formula /= {~ x 100)—