6i 



the larger yellow-tinged calyx, and the sepals which are more 

 strongly hooded and terminate at the back of the hoocl in a 

 spinelike cusp. The latter structure is a characteristic not 

 before known in the genus. 



John K. Small. 

 The New York- Botanical Garden. 



BOOK REVIEW 



CuRTis's "A Guide to the Trees." * 

 There is no dearth of tree books, but Professor Curtis's "A 

 Guide to the Trees" is aimed particularly at young folks in 

 their teens and, so far as known to the present reviewer, no other 

 work brings out the distinctive characters of the trees of our 

 northeastern states in such simple and non-technical language. 

 Keys to the genera are supplemented by keys to the species in 

 the larger genera. Each of the species is illustrated by a good 

 text-figure and other figures are found in the keys and in the 

 brief glossary. The Latin names, which are made subsidiary 

 to the "common" English names, appear to be in harmony with 

 the recently published Standardized Plant Names prepared by 

 the American Joint Committee on Horticultural Nomenclature. 

 The importance of the trees to the life of our nation and the 

 need for treating them with intelligence and respect are properly 

 emphasized by the author. It is a book that wull prove most 

 useful to Boy Scouts and Girl Scouts in their nature-study work 

 and it breathes a spirit that the Scout movement is doing much 

 to foster. 



If one were to mention flaws in Professor Curtis's book, the 

 most conspicuous may be the existence of unorthodox spellings 

 of certain generic and specific names — spellings which do not 

 appear to be altogether the result of hasty proof-reading, as 

 they appear in the index as well as in the main text. Such are 

 the unconventional but easily recognizable variants of Asimina, 

 Castanea, Cerasus, Halesia, and Ptelea. But these will doubtless 

 be set right in the second edition which a lively demand may 

 soon make necessary. 



Marshall A. Howe. 



* Curtis, Carlton C. A Guide to the Trees. Small 8vo. Pp. 1-208. 

 1925. Greenberg, Publisher, Inc., New York. 



