62 the president's address. 



Those apples that become buried in the ground, or covered 

 over with herbage, etc., produce at the end of two years, from 

 the same mycelium that previously yielded conidia, a second 

 kind of fruit of a much higher organisation than the conidial 

 form, and the result of a sexual act. This second form resembles 

 in appearance a widely open wine-glass, supported on a long 

 •slender stem, and belongs to the group of fungi called the 

 Pezizeae. The spores of this form of fruit give origin to the 

 conidial condition occurring on the foliage. 



As to practical methods of preventing an epidemic caused by 

 this fungus, the trees should be sprayed with a dilute solution 

 of Bordeaux mixture, commencing at the unfolding of the 

 leaves, and repeating at intervals until the fruit is half-grown. 

 Of course, all diseased fruit should be collected and burned. 



Journ. Qw/cett Microscopical Club, Ser. 2, Vol. IX., No. 54, April 1904. 



