WAXY ENDOSPERM IN HYBRIDS WITH SWEET CORN. 27 



inents have been oulliiiecl fur isulatiii<^- and determinin«>- the nature 

 of this new type. 



Since all three classes of seeds occurred on the same self-])ollinated 

 ear, it was possible to compare the weights of the three classes where 

 the parentage of all was identical. The horny, waxy, and sweet 

 seeds from each of 40 ears were separately weighed. The result 

 shoAved that in nearly every ear the horny seeds w^ere heavier than 

 the waxy, which were in turn heavier than the sweet. Specific- 

 graA'ity determinations of the different classes showed no significant 

 differences. The differences in weight must therefore be due to dif- 

 ferences in size. 



[Cir. li:u] 



