398 Wormald.— Brown Rot ’ Diseases of Fruit Trees. 
certain physiological and cultural experiments carried out with the same 
fungi. It will be convenient, however, to summarize briefly the results of 
the observations and experiments described in the preceding pages, as 
follows : 
1. In this country two distinct species of Monilia occur as parasites 
on fruit trees, viz. M . frnctigena, Pers., and M. cinerea y Bon. 
2. Each species has two forms distinguished by the effects produced 
on mature apples inoculated under laboratory conditions. 
3. The morphological species Monilia cinerea includes two ‘ biologic ’ 
forms, one of which produces a ‘ Blossom Wilt and Canker Disease ’ of 
apple trees, and another which is unable to cause infection of the apple 
inflorescence other than the flower actually inoculated. 
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1 I wish to thank the Editors of the Gardeners’ Chronicle for sending me a typewritten copy of 
this article. 
