371 



In three instances the butt grains led in productiveness- 

 and in the fourth case they wanted only a very slight weight 

 of taking first place. In three cases tip grains were least 

 productive. Taking an average for the four ears planted, 

 the weight of the shelled corn produced was as follows : 



WEIGHT OF SHELLED CORN PEE PLANT. Grains 



From planting butt kernels, .... 2439 



" " middle kernels, .... 2092 



tip " . . . . 2187 



Attention is called to the fact that butt kernels led in 

 average weight and in productiveness ; that tip kernels fell 

 much below the others in weight, and that tip kernels were 

 least productive in three out of four cases, although the re- 

 latively large yield with tip kernels of the Eenfro variety 

 made the average figure for tips higher than for grains from 

 the center of the ear. The frequent correspondence be- 

 tween weight of seed and productiveness in this test is sug- 

 gestive and is worthy of further study in future experi- 

 ments. 



The following table brings together in a form for easy 

 reference the results of our tests and of previous tests at 

 other experiment stations on the relative productiveness of 

 grains from different parts of the ear. 



In each test the lowest yield, whether made by middle, 

 butt, or tip kernels is graded at 100, and the two higher 

 yields at correspondingly higher figures : 



