IN Till-! TUOPICS : HI. 



Ill 



Expectation : 50 starchy ; 50 sugary. 



There is here an evident slight bias towards an excess of 

 starchy grains above the expected number. It is possible 

 that this is partly due to pollination having taken place in a 

 few eases from the plants of a neighbouring plot in which si a rob. 

 corn was grown, though it was believed that the latter had 

 ceased to give off pollen before the present plants were ready 

 to receive it. 



Expt. 2d.— {White pop com x G.W.S.) x G. W. 8. 



This was the only case in which there was found to be a 

 difficulty in distinguishing the two classes of grain. The 

 great majority of grains were either smooth or obviously wri n It- 

 led, but a smaller number were only slightly rough on the 

 surface and constituted a group intermediate between the 

 other two. The result indicated in Table 5 was obtained 

 by counting as sugary all those grains which showed any trace 

 of roughness, a proceeding which was found to be justified 

 by the evidence of a further generation. The supposed 

 starchy grains are still distinctly in excess, and it seems 

 possible that a few of the quite smooth grains are also really 

 sugary in nature. 



9(8)06 



(3] 



