Current Literattire and Reviews. 147 



composed of many different species, which constantly dispute 

 with each other for the occupancy of the land. Gradually as the 

 marketable trees are culled out the remaining species occup}' their 

 place and the composition of the forest is changed. Under such 

 conditions, and without knowledge of the silvicultural behavior 

 of most of our forest trees, it is, to say the least, very risky to 

 predict the future growth and 3'-ield of the species that is most 

 lumbered, nor is it useful from a practical point to know 

 thoroughl}^ how the old trees of the primeval forest now cut have 

 grown, for the conditions under which they have grown up may 

 never be repeated again, and Mr. Foley wisely, in our opinion, 

 left out Irom discussion in his working plan the future yield and 

 rate of growth of old trees. 



The difference between mere lumbering and lumbering upon 

 forestry principles lies in the taking care of the young forest 

 growth, i.e., in silvicultural measures, to which much attention 

 is given in the bulletin. 



The observations made of the demands upon soil, moisture, 

 and light of the different species are too local to be of general 

 value, and in the table of comparative sprouting capacity of the 

 different species no mention is made of what was taken for com- 

 parison — the number of sprouts or the height and diameter of the 

 predominant sprout during the first year, considerations which 

 would change the order in the table. 



The bulletin is an interesting one and judging from it the oper- 

 ations at Sewanee should prove most successful. 



The Principal Species of Wood. By Charles Henry Snow. New 

 York, John Wiley & Sons. Pp. 203. PI. 39. 



A comprehensive work, illustrated by photographs and original 

 drawings ; to be reviewed in a sul^sequent number. 



United States Geological Survey, Professio7ial Paper's Nos. 4., 5, 

 6, 7, and 8. Series H, Forestry i. 



The results of recent investigations by the Geological Survey 

 of Western timber resources have just been published under sep- 

 arate covers as follows : The Forests of Oregon, and The Forests 

 of Washington, by Henry Gannett ; Forest Conditions in the 

 Cascade Range, Washington, by Fred G. Plummer; Forest Con- 

 ditions in the Northern Sierra Nevada, California, by John B. 



