BOOKS AND CURRENT LITERATURE 29 



^\ illstiitter. The references to the literature are very well chosen to 

 lead to a more extensive study. On a careful perusal of the book a 

 great many problems for investigation suggest themselves which fill 

 the reader with a great desire to extend his knowledge by further read- 

 ing and research. — H. A. Sfoehr. 



Identity of Brown Rot in America. — The opinion has been quite 

 generally held that the American brown rot of stone fruits is caused by 

 Sclerotitiia fructigena. European writers, following the lead of Aderhold 

 and Ruhland, maintain that the form occurring on stone fruits is to be 

 regarded as *S\ cinerea, and the one on pome fruit sm S. fructigena. An 

 extensive study^ of the behavior of S. cinerea when grown on apples, 

 pears, quinces and plums, and in pure cultures, of the size of its conidia, 

 asci and ascospores, leads to the conclusion that the American brown rot 

 of stone fruits should properlj^ be referred to S. cinerea. — Frederick A. 

 Wolf. 



^ Matheny, W. A., A compaiLsoii of the American biown rot fungus with 

 Sclerotinia fructigena and S. cinerea of Europe. Bot. Gaz. 54:418-432, figs. 6. 1913. 



