1 8 ILLINOIS STATE DAIRYMEN’S ASSOCIATION. 
not to be disturbed until skimmed. In pa-oof of my opinion 
I will state the result of 19 tests at Rock River factory the 
winter of 1879. No test less than 25 per cent, in favor of 
twice per day delivery. These tests were for butter alone. 
This winter at Genoa factory I made two tests for butter 
and cheese and found the loss was more than last season at 
least 35 per cent, allowing both articles to sell alike, which 
they won’t do, the twice-a-day milk makes much the finest 
butter when delivered promptly after milking. Take 1,000 
pounds milk to-night, carry it prompt to factory, set 36 
hours if temperature is cool enough to stand that long, 
skim, work cream when ready into butter, work milk into 
cheese, then take 1,000 pounds milk and let it stand in cans 
over night, deliver next morning, set same as other, skim 
when ready, work same as the other into butter and cheese, 
sell at same price, and if your trial proves as my two, 10th 
and 13th this month, you will find 35 per cent.' difference 
in favor of prompt delivery soon as drawn from cow. The 
milk of four cows if delivered to factory prompt twice 
per day will make more butter and cheese than five 
equally good cows, their milk being delivered once per day 
only. No test out of 21 in 1879 an d 1880 has shown less 
than 25 per cent, in favor of tw'ice-per-day milk. Of course 
dairymen cannot afford this. 
Topic No. 4, “ The Cost of Producing Winter Milk, 
Compared with the Cost of Producing Summer Milk, was 
then taken up. 
W. W. Bingham : He had had no experience in compai- 
ing the cost of Winter and Summer milk. He knew that 
it depended not only upon the amount of feed given cows, 
but upon quality as well. He had made some estimates 
which he could give. 
♦ » 
Where a cow averages 25 pounds of milk per day, the 
cost per hundred of the milk will be 60 cents; where 
the average is 30 pounds per day the cost will be 50 cents 
per hundred; where the average is 35 pounds per day the 
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