78 HISTORY OF PHYTOPATHOLOGY 



atlas of colored plates illustrating the diseases and in- 

 juries of cultivated plants. The text-book, first published 

 in 1890, 1 is designed primarily for farmers and gardeners. 

 It is unique in the arrangement of its data, being, hi 

 short, an annoted key to the fungous diseases and insect 

 injuries of plants, based on the symptoms exhibited. 



OSKAR KlRCHXER. 



A noted German pathogenetist. (From a photograph.) 



The primary grouping of the diseases, is however, on 

 the crop basis. There are ten groups or classes of 

 these, as follows: 1. Cereals. 2. Edible-seeded legumes. 

 3. Fodder grasses. 4. Fodder legumes. 5. Root crops. 



1 Kirchner, Oskar: Die Krankheiten und Beschadigungen unserer 

 landwirtschaftlichen Kulturpflanzen, pp. I-X + 1-637, 1890. A second 

 completely revised edition appeared in 1906. 



