EFFECT OF EEMOVTS'G SEED. ETC. 



139 



In the examinations made there were taken for analysis one stalk, 

 the panicle of which had been thus protectetl, and another at the same 

 time, of the same variety, and, so far as other indications showed, at 

 the same i^tage of development, but the seed of which had been taken 

 by the birds. 



Tliere were made during the season, in all, 136 pairs of analyses of 

 most of the varieties under examination. The results of these analyses 

 are .uiven in the lollowing table. 



In the first table there are given 92, and in the second 44. pairs 

 of analyses. 



It will be observed, that in the 92 pairs there is a result indicating 

 an earlier stage of development in those stalks upon which the seed 

 was kept, while in the 44 pairs this difference is not marked. 



EFFECT OF KEMOTIXG SEED. 



Stage of derelopment . . 



Per ct-nt juice.. 



Specitic gravity... , 



Per ceut glucose 



Per cent sucrt>se 



Per cent sol ids.. 



Polarization _. . . 



Per fetic aYaiI^lbIe sugar., 

 Xumber of analyses 



rem^ed Js^ °"-k«'^ •^n*-! re^ed.lS^ed on.lPer cent. 



10 42 



OO.HO 



1 onr 



12 fi-ig 



2 yrs 



12 TM 

 8650 

 92 



1 omJT 



1 40:J 

 9 9i58 



2 945 

 9 SS:? 

 5 670 



92 



9? 9 

 101 7 



S9 7 

 106 .=> 



91 3 

 IKi :i 

 117.9 



In the third and sixth columns is given the per cent of tlie average 

 results secured from the analyses of those canes with full see<l heads, 

 of the average residts obtainel from the analyses of those canes from 

 which the seed had been removed. It will be observed, that in the 

 average results of 92 pairs there is an increase in juice of 4.1 per cent, 

 and of glucose 44.9 j^er cent, and a decrease of every other element of 

 the analyses: of sucrose, 21.3 per cent; of solids, 1.1 per cent; of 

 available sugar, 34.5 per cent ; and a decrease in specific gravity. It 

 is als:) noticeable that, while the average stage of development was 

 about midway between the tenth and eleventh in those stalks from 

 which the seed had been removed, it was below the ninth stage in the 

 stalks of which the seed had been protected. 



The averages fix)m the 44 pairs give results indicating almost 

 the opj)osite effect, for it will be noticed that, although the tendency «>f 

 thL^ removal of the seed is to hasten the development and maturity <;f 

 the plant, the average amount of juice and its specific gravity is prac- 

 tically the same: the amount of sucrose is greater, and that of glucose 

 much less, the solids also being less, so that the per cent of available 



