98 Forestry Quarterly. 



nature of a textbook, and will be found an excellent aid to the 

 student who is striving to make his first acquaintance with Phyto- 

 pathology. 



The subject matter is arranged under three general headings: 

 I. Culture Methods and Technique, II. Physiological Relations, 

 III. Fungous Diseases of Plants, and further subdivided into 

 chapters. In this connection one of the most valuable features is 

 the citation of literature. A list of the more important references 

 precedes each chapter. 



The first division is intended solely for the student and young 

 investigator, and sufficient aid is given to enable any intelligent 

 student to make his own way. 



The second is possibly the most unsatisfactory part, as the 

 matter treated is of such importance as to suffer from so brief an 

 account. A chapter of practical value on the methods of prepar- 

 ing fungicides brings this section to a close. 



The bulk of the work, as one would expect from the title, deals 

 with the diseases themselves. The sequence adopted is based on 

 the classification of fungi — the most logical for the student, and 

 with the aid of an index arranged according to the hosts, easily 

 usable by the layman. The illustrations are good, the descrip- 

 tions are clear, and the number of diseases described fairly com- 

 prehensive. An approved method of treatment is given for each 

 malady. 



This book is in no sense a classic, not even a compendium, either 

 of the whole or of any part of the field, nor does the author make 

 any such claims for it. But it is a well-written elementary text, 

 and should prove exceedingly useful. 



Stevens and Hall's "Diseases of Economic Plants" strikes one 

 as being eminently practical. Both authors have been associated 

 for many years in joint experimental work on plant diseases and 

 show a thorough acquaintance with their subject. After a very 

 brief historical resume of Plant Pathology in America they at once 

 plunge into a discussion of such topics as the damage caused by 

 disease, symptoms of disease, prevention and cure of plant dis- 

 eases, fungicides, spraying machinery, cost of spraying, profits 

 from spraying and so on. These are all treated succinctly, within 

 the limits of sixty pages. The rest of the book deals with the 

 individual diseases, the account being arranged according to an 

 economic classification of plants under culture. Thus the dis- 



