156 BOTANICAL GAZETTE [AUGUST 
such diseases as ‘‘damping off,’”’ which are not restricted to apr ser —— 
of plants. The rest of the book deals with “Special diseases of crops.” The 
material is arranged according to the agricultural classification of plants, 
under such heads as pomaceous fruits, drupaceous fruits, small fruits, vege- 
table and field crops, cereals, fiber plants, trees and timber, and ornamental 
plants. The descriptions are clear and concise, giving such characteristics as 
enable the general reader to identify the disease. The book is illustrated by 
numerous halftones, which, however, are only of fair quality. 
A feature peculiar to the book is the introduction of a unique popular 
nomenclature for the diseases described. This feature consists in the uniform 
construction of popular names, where none exist, by adding the ending -ose 
to the generic name of the organism causing the disease. Although this 
it becomes Simicnwe on account of the extent to which the idea is carried 
ously, and have only local but forceful eciledace. which cannot be attained by 
names manufactured on a wholesale scale. In this case their acceptance 
would rather lead to a confusing monotony. 
The k will be found extremely useful to those who have to do with 
the ih ine of plants. It will enable them readily to renew information on 
ise to them, and to identify new diseases not too obscure. Being 
aehacecaliy | arranged, the book itself serves as a sort of host index, making 
the finding of material an easy matter. In each case is given what is known 
of methods of treatment, the matter of real importance to the grower. 
The work of Masse is the outcome of the author’s well-known Text-book 
of plant diseases, the last revised edition of which appeared in 1903. The 
growth of plant pathology in the interval has made necessary a complete 
revision of the text, with the addition of so much new material that the result 
is a new book. While it follows the general plan of the older work, the treat- 
ment of the subject is much more extended, owing partly to the enlarged 
scope of the new book, but more directly to the amount of new material incor- 
The book begins with introductory sections discussing such general sub- 
jects as primary and secondary causes of disease, meee infection of plants, 
the dissemination of fungous diseases, injuries not due to fungi, and other 
related subjects. Space is also given to the potent of fungicides and 
spraying. The American reader will be struck by the absence from this 
section of a discussion of apparatus for the application of fungicides. 
The greater part of the book is taken up with descriptions of diseases and 
the fungi causing them. This part is arranged according to the groups of 
fungi, although none of the ordinary systems of classification are followed in 
detail. In the Pyrenomycetes, for example, the spore characters are taken 
