664 EXPERIMENT STATION RECORD. 



sucli liookH, and is probably the (Hily one publislied in the iMi^H.^h langnage whieh 

 attempts a systematic discnssion of the varions toj>ics treated. The book is not only 

 a contribntion to economic science, but also to the technical literature of forestry. 

 The chapters are: The relation of the State to natural resources, the forest as a 

 resource, the forest as a condition, forest and forestry defined, the business aspects 

 of forest production, natural history of the forest, sylviculture, forest economy, 

 principles and methods of forest policy, forest policies of foreign nations, the forest 

 conditions of the United States, and the forestry movement in the United States. 

 A Vjibliography and numerous notes, tallies, and other references are added in the 

 appendix. 



Among' green trees, Julia E. Rogers {CJdcago: A. W. Mmnford, 1902, pp. 

 XXn^202, ph. 25, figs. 196). — This is a pojiular treatise describing a limited num- 

 ber of trees, and giving account of their physiological activity, their cultivation, and 

 their systematic relations. In all about 125 different kinds of trees are described, 

 the author aiming to include the more common and important trees growing in the 

 States north of Virginia and Arkansas and east of the Rocky Mountains. The first 

 part of the book is taken up with a nature-study consideration of trees, followed by 

 chapters on the growth, reproduction, and other physiological functions of the trees. 

 In the third jiart of the book the horticultural phases of tree growth are discussed, 

 and directions given for planting, pruning, and protection of different kinds of trees. 

 The book concludes with a description of the species as indicated above. 



Studies of trees in winter, Annie O. Huntington {Boston: Kniglit ct Millet, 

 1902, pp. XVIII-\^19S, ph. 79,fig.'i. 3). — A description is given of the winter aspect 

 of a number of the deciduous trees occurring in the northeastern United States, with 

 an introduction by C. S. Sargent, of the Arnold Arboretum. The charac^ters upon 

 which the recognition of the trees in winter depend are based largely upon the 

 aspect of the trunk and branches, stems and twigs, leaf scars, bud scars, and shape 

 and position of the buds. After describing these at length the author takes up and 

 describes about 40 different kinds of trees, the best known of which are the horse 

 chestnut, majiles, ashes, walnuts, hickories, birches, beeches, chestnut, oaks, elms, 

 sycamore, locusts, lindens, magnolias, willows, poplars, larch, etc. In addition to 

 describing the winter aspect of these trees so that they may be readih' rectjgnized, 

 notes are given on the distribution and general characters of the trees, together with 

 statements regarding their value from economic and other standpoints. The book 

 is an important contribution to our knowledge of the forest flora of a consiilerable 

 portion of this country, since the species described are not by any means restricted 

 to the northeastern part of the country. 



Timber resources of the United States ( Tradesman, 4S {1903) , No. 10, p. 74)- — 

 According to recent estimates the merchantal)le timber of the United States, not 

 including Alaska or the island possessions, aggregates 1,300,000,000,000 ft. B. M. 

 Another estimate, based upon the annual product and the prospective life of the 

 lumber industry from the standpoint of those who are familiar with the various 

 sections, is somewhat lower— in round numbers 1,093,000,000,000 ft. 15. M. This 

 estimate takes into account only the timber which is adapted to use as saw tiuiber, 

 and does not take into consideration the production of cord wood, posts, poles, etc. 



History of the lumber industry in the State of New York, W. F. Fox {New 

 York State Fared, Fish, and (,'ame Com. Rpt. 1900, pp. 237-305, pis. 24, map 1). — This 

 is a reprint of Bulletin 34 of the Bureau of Forestrv of this Department (K. S. R., 

 14, p. 57.5). 



Manuring: woodlands {Farmers' Gaz., 61 {1902), No. 21, p. 3SS). — A summary 

 is given of investigations conducted on the continent of Europe in which the value 

 of fertilizers in promoting forest growth was studied. In several examples the 

 increased growth of the forest trees due to the dressings of fertilizers and cultiva- 

 tion much more than paid for the cost of a]ii>lication. In one experiment where 



