370 



moval of tips and butt grains from seed corn is advantageous. 



As a check on the above experiment a more comprehen- 

 sive test was undertaken on plots so small as to permit of 

 the weighing on chemical balances of all the seed planted. 

 In this experiment butt, tip, and middle grains were ob- 

 tained from spaces of one inch located respectively at the 

 butt, tip, and middle portions of the ear. All unsound 

 kernels, found chiefly among the tip grains, were rejected; 

 otherwise the kernels which were weighed were not selected 

 but represented average grains from the several parts of the 

 «ar. 



From each large, well filled ear, used in this experiment, 

 50 grains from each part of the ear were weighed, and 

 these 50 kernels were planted in 24 hills, spaced 4 by 4 ft. 

 Later the stand was reduced to one stalk per hill and the 

 missing hills were replanted with Brazilian Flour corn, the 

 replanted hills equalizing the stand, but forming no part of 

 the experiment. 



The following table gives the weight of the middle, butt, 

 and tip kernels planted, and the weight, in apothecaries' 

 grains, of the shelled corn grown from each kind of seed : 



Weight of middle, butt, and tip kernels planted and yield 

 of shelled corn produced by middle, butt, and tip seed. 



