August 12, 1892.] 



SCIENCE. 



97 



across the AUeghanies from Pittsburgh via Washington to New 

 York, and is profusely illustrated. 



— The experiment station of Cornell University conducted an 

 experiment in 1890, showing very decided beneficial results from 

 removing the tassels from a part of the growing corn ; their calcu- 

 lations showing about fifty per cent gain from the rows from 

 which the tassels were removed over the alternate rows on which 

 the tassels were allowed to remain. This remarkable showing 

 caused a similar experiment to be undertaken at the Ohio station 

 in 1891. Thirty- two rows of corn, running over quite uniform 

 land, were selected upon which to make this trial. On Aug. 1, 

 the tassels were pulled from each alternate row. At cutting-tirae 

 four rows, having the tassels removed, were cut and shocked to- 

 gether, then four rows from which the tassels were not removed 

 were shocked together. Continuing this throughout the thirty- 

 two rows, they had when done four shock rows of each. When 

 husked these shock rows were weighed separately. They also 



separated the merchantable from the unmerchantable corn, and 

 calculated the yield of each separately per aci-e. They find that 

 the unmerchantable corn from the four plots from which the 

 tassels were removed averages 2fi percent, while the averages from 

 the other four rows is 21 per cent unmerchantable. The calcula- 

 tions also show that the average yield per acre is about one bushel 

 less than where the corn was left undisturbed. It is probable that 

 the tassels were not removed in this experiment early enough. To 

 insure or even make possible beneficial results from removing tas- 

 sels, the pulling should be done as soon as they appear, and before 

 the stalk has weakened itself in an attempt to perfect the tassel. 

 The theory upon which this experiment is based is that the strength 

 that would othei'wise go to the maturing of the tassel and produce- 

 tion of pollen is diverted to the use of grains, and from their more 

 complete development more corn is produced. The fodder in this 

 experiment was not weighed, because back-water from a high 

 river damaged it to such an extent as to make the weight unre- 

 liable. 



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