284. 
Average yield of butter Ratio of albuminoids 
Date. per day, in ounces, to remainder of ration. 
Mar. 34-14 seek. 31.5 DBI N 
OE mney) kei oe ae 2%. 1s) 0RF 
POU Apow Oe. 3 28.1 deeb e re 
CAT ALO == Lik gene er eee 25. 1383 
This would have been still more marked had each period been ex- 
tended for two or three days into the next as would have been proper 
to do, as the effect of a ration continues some time after it is discon- 
tinued. . 
This result was entirely unexpected, as the rations usually given 
in the published records of tests which have given phenominal yields 
have, almost without exception, been highly nitrogenous, and furth- 
er, with the exception of pea meal, have been made up of the same 
materials which composed these rations. 
One thing at least was made evident during this test, and that is 
the difficulty of controlling the composition of the ration eaten, as 
the animal by refusing a portion may materially change any prede- 
termined relation between its constituents. 
The butter obtained in all tests, in this trial, made subsequent to 
March 21 was weighed in the granulated form as taken from the 
churn after being washed and drained. This butter was afterwards 
thoroughly worked and salted at the rate of one ounce to the pound. 
The percentages given are calculated on this basis. In the tests 
made previous to this date only the weight of granulated butter was 
taken, and in these cases the per cent. given has been calculated by 
deducting the average loss in working and salting as obtained from 
the later trials. This loss was 16.11 per cent. 
In the following table appears the result of determinations of the 
number and relative size of the butter globules in Jem’s milk during 
the trial. 
No. of globules in Relative Skimmed milk 
Date. .0001 cubic milli- size. No. of globules in 
meter. .0001 cubic millimeter. 
Mar. 13 e. Do 390 } 23 
“14m. 97 an 
A get heh ite 108 405 
Up as 0 140 — 28 
an AO. 156 347 38 
ae oe LO 70 384 4” 
a cue Like 19 500 16 
hime 4 Sat: 109 491 27 
CUE ne 92 510 21 
Se iad Us 133 439 28 
Sle tay DeT TL 112 395 26 
RO a Os 151 343 33 
Att. Jeu, 123 337 27 
af? le. 149 321 38 
fy 2m. 118 337 29 
i 2 e. 157 311 
He 3 mM. 139 a OO 
eats Ot 148 3435 
Ee 
