53 



THIS work is "photo-descriptive," in that the distinctive characteristics of 

 the various species are shown in carefully made photographic illustra- 

 tions. So completely has this plan been carried out, after a vast amount of 

 experiment and field work, that the book enables one who has never studied 

 botany to easily identify the trees by comparison with its illustrations It 

 appeals alike to the amateur observer of trtes, the lumberman and the technical 

 botanist. 



Its illustrations cover the field in the following five exclusive parti* ulars: 



(1) Leaves and Fruits in fresh condition, against a background ruled 

 into square inches (a unique plan, original with the author) whereby natural 

 sizes are at once apparent, and so perfect are the pictures that even minute 

 details, as nature of surface, etc., are distinctly shown. 



(2) Leafless Twigs, generally a full season's growth, showing the char- 

 acters by which the trees may be identified in winter a revelation to those who 

 have thought it possible to identify trees on'y in summer. 



(3) Typical Barks of Trees as found in field and forest with natural 

 environment, a 1-foot rule being affixed to indicate size. They show the 

 characters by which the woodman knows the trees. 



(4) Wood Structures (transverse) of at least one species of each genus, 

 magnified fifteen diameters, to aid in the identifying of woods. This feature is 

 of special value to dealers and workers in woods. 



(5) Maps Indicating Distributions of the various trees. 



The illustrations represent 690 negatives, all made on account of scientific 

 value, and the maps 191 line engravings. The text gives important information 

 as to botanical characters, habitats, uses, etc., and carefully prepared Keys and 

 Glossary. Royal octavo, X + 470 pages. 



Price $6 in buckram binding ; $8 in half morocco. Expressage prepaid. 



Sample pages sent on request. 



