New York AGRICULTURAL EXPERIMENT STATION. 267 
Partial ash analyses were made, and when calculated upon the 
dry substance of the hay, we have as follows: 





20 oa A 
Say KS = 
TIMOTHIES. PE J BA 
2 3 g 
As S = 
Ay ay A 
NE rer EERE IRE COO Cts cea ko Seated ode e eb Pekdcadbaweete 0.327 1.593 1.40 
VE PRMMCRIVSSIIE, LOBT 5140". w.c0% shina ss'ioniemach ang rey. earl: aie wee pes: S 0.607 1.306 1.16. 
GAS IE URC Bite BP oe. ORE Tee MRT eae Ar 0.232 0.834. 1.21 
RAREST PUM Ie care tae ee Se tie Ie hee Live Lert eiecs w'y Sea vax ho doa a. ciy aisle’ 0.246 0.728 0.93 
NOE EE CESS 2 Beal tked 8 alin ce Uae Eo aR A ee ae a 0.723 1.292 1.38 
ING WRU OCS TALLORT TER SOne tenant Lee RE: Poche soeenlcaeemone 0.179 1.097 0.75 
Bee Ot LALO BOR te ae bec awh alee'ys vse civ th v wnee's oh cvata’ceguae.s < 0.385 1.702 1.30: 
Neier cer Pete We me rt ee A eo he ia vidoes dakcbeee 0.313 1.459 0.98 



In connection with our other studies of grasses this question of 
variation for different localities will be continued, and in time we 
trust that the several studies which now are fragmentary may all 
be brought together into one general and complete whole. 

NITROGEN-FREE EXTRACT OF FODDERS. 
he nitrogen-free extract of feeding-stuffs is a mixture of 
sugars, starch, pectic and mucilaginous substances with organic 
acids, gums, etc. Analysts have been in the habit of determining 
allthe other constituents of a fodder and taking the nitrogen-free 
extract by difference. Thatis, the sum of all the other substances 
when subtracted from 100 gave the nitrogen-free extract. It would 
be far better to determine the amount of the sugars and starch 
and take the remainder by difference, even doing away, if neces- 
sary, with the determination of the crude fiber. The amount of 
sugar and starch varies in different fodders, even in the same 
fodder at different periods of maturity and for the same fodder 
grown under different conditions. Twenty-one samples of timothy, 
all cut at period of full bloom, varied in their sugar and starch 
content as follows: | 








Invert + 
sugar. Suerose.| Stareh. 
ME scLimUln eee ee ee oe ester 5 nae ee cet ELON a 30. hota chi ae 5.00 7.60 22.61 
Minigiaineeeiisiwass cosas AE AROS by Sey ep Cn tL Mois ase 2.32 4.68 17.55. 


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