Cheese Experiments. 
187 
piocUucd by the machine being the dearer of tVie two. On 
analysis the following results were obtained : 
Composition of two Samples of Whey made at Frocesfer Couii, 
August 7th, 1860. 
MacUine-madf. Hand-made. 
Water 92-75 y2-(30 
Butter -39 -55 
'Albuminous compounds "87 '96 
Ash -SG -81 
Sugar and extractive matters 5* 13 5 '08 
100-00 100-00 
*Contaiuing nitrogen •14 *15 
Free lactic acid -41 '36 
We see then that both in respect of the butter and the albumi- 
nous compounds left in the whey, the machine has an advantage, 
though but a slight one ; but there is no essential difference 
between ordinary whey and that produced by the centrifugal 
machine. Other samples of whey from cheese made by hand 
have given me quite as little butter as that found in the whey 
produced by the machine ; and every sample of whey which I 
have yet examined contained from 8-lOths to 1 per cent, of a 
curdlike albuminous matter which is not coagulated by rennet, 
and that can only be separated by boiling. 
The four cheeses of each trial were carefully marked and 
weighed at intervals. They were made, it will be remembered, 
on the 7th of August. 
No, I, — The cheeses made by hand weighed : 
Ano-ust 18th 81* lbs. 
September 3rd 7Si „ 
September 22nd 75 „ 
Loss in 4 weeks, 6J lbs., or 8 per cent. 
II. — The four cheeses made by the machine weighed : 
August 18th 74 i lbs. 
September 3i-d 70J „ 
Sei^tember 22nd C7 „ 
Loss in 4 weeks, 7i lbs., or 10 per cent. 
The cheese was sold at 7c?. a pound when only five weeks old, 
and no perceptible difference in the quality of the cheese made 
by hand and that made by the machine could be noticed. All 
were equally good and fine-flavoured cheeses. 
Eighty gallons of milk when made by hand into cheese thus 
produced 75 lbs., and when made by the machine only 67 lbs. of 
saleable cheese. Since the whey from the machine-made cheese 
was rather the poorer, fully as great a weight of cheese might 
have been expected when the machine was used as when the 
ordinary plan of manipulation was adopted. To account for this 
