Similarly, the varieties Monarch and Hull-less are both sus- 

 ceptible to covered smut while the former is resistant to the 

 loose smut. In the second generation of crosses between 

 these \arieties, practically all of the plants inoculated with 

 covered smut have been infected, while of 196 plants inocula- 

 ated with loose smut 41 (20.9 per cent) plants were infected." 



At the conclusion of the lecture, Dr. Harper remarked 

 that the data which had just been presented in a most able 

 manner were at least in part the data forming the basis of 

 the paper which won the A. Cressy Morrison Prize for 1927, 

 offered for the most acceptable paper in a field of science 

 covered by the New York Academy of Sciences or an affiliated 

 Society. He believed that the Club had not yet taken formal 

 recognition of this award, and felt that the Club was to be 

 congratulated on the fact that the prize had been won by one 

 of its own members. 



In the discussion of Dr. Reed's paper which followed. Dr. 

 Barnhart inquired if any studies were being made looking 

 toward the possibility of morphological distinctions being 

 present in the physiologic races. Dr. Reed replied that one 

 of his former assistants, who is now at Syracuse University 

 doing graduate work, is studing this phase. Since these smuts 

 are readih' cultured, it may be possible to distinguish between 

 them on the basis of their cultural characters. Dr. Trelease 

 asked if all of the seedlings in a pure line variety would get 

 infected. Dr. Reed answered that practically every pure 

 line variety of oats, if it is susceptible, should yield 100 per cent 

 of infection. However, environmental conditions modify the 

 degree of infection more or less — occasionally the results 

 being 90 or 95 per cent infection. Dr. Gundersen and Dr. 

 Barnhart remarked on the possibility of the species being 

 liable to change. Dr. Reed stated that the chances are that 

 races of smuts are de\'eloping about as fast as varieties of 

 cereals. 



Arthur H. Graves. 



Secretary. 



64 



