26 
FIRST BOOK. 
How would you like to live on milk, and 
never have meat, Jack?" he asked me. 
2. ''Not at all, Uncle/' I said; ''perhaps I 
should not grow if I did not eat meat." 
" Oh, yes! you would/' he said. " With plenty 
of milk and bread you would get on well. A 
baby, a calf, and many other young animals have 
nothing besides milk to eat or drink, for a time. 
It is the best food for them, and is good for us 
all." 
3. I thought it very strange when Uncle told 
me why milk is white, so that we cannot see 
through it, as we can through water. He said it 
is because milk is full of tiny bags of oil or fat. 
Then he told me all about butter-making. 
Would you like to read what he told me? 
4. Of course the little fat-bags are at first mixed 
up with the watery part of the milk. But fat is 
lighter than water, and will float on it. So if the 
milk is left for a time in a dish, the fat-bags rise 
to the top, and form cream, which can be skimmed 
ofl*, and made into butter. d 
5. The cream has to be put into a churn, which I 
is then turned round and round, so as to dash* 
the cream about. In this way the thin skins or 
bags are burst, and the fat is let out. This fat is , 
the butter, and the watery part that is left is i 
called butter-milk. 
