308 



Mycologia 



hosts on which they occur and all of the diseases of a given host 

 are treated under that host regardless of the relationships of the 

 fungi which cause the diseases. The terms used in designating 

 the various diseases are those most commonly used, or, where these 

 are lacking or ambiguous, a name is made by adding the termina- 

 tion ose " to the generic name of the fungus which causes the 

 disease. The work is thoroughly illustrated, the illustrations 

 being of such a nature as to be of material aid in the diagnosis of 

 the various diseases. 



The appendix contains a brief discussion of the differences in 

 the physiology of the chlorophyl-bearing and chlorophylless plants 

 with a few of the most striking morphological characters of the 

 bacteria and fungi. This part of the work is very brief. 



One of the points on which the work is to be commended is the 

 fact that the manuscript of the various parts has been submitted 

 to the best specialists in the groups treated for corrections and 

 criticism, thus eliminating many of the errors which might other- 

 wise appear in a work of this kind and ensuring accuracy as to 

 details. The book will doubtless meet the need of a large number 

 of students, especially in our agricultural colleges. 



F. J. Seaver. 



