28 
FIRST BOOK. 
milk change. It turned lumpy, and was no longer 
all liquid. Uncle said that the sour juice had 
curdled it. 
9. He called the thin watery part ivliey^ and 
the solid part curds, and told me that in other 
countries cheese is made from the curds of milk. 
THE MANATEE, OR SEA-COW. 
1. The manatee is a strange-looking creature, 
whose heme is in the sea and wide river-mouths. 
You must not mistake it for a large fish, although 
its body is shaped something like one, and it can 
swim well. 
2. In many ways it is not at all like a fish. 
The blood is warm in the sea-cow, but is cold 
in a fish. The sea-cow does not breathe by 
gills as a fish does, but by lungs, as we do. 
And it feeds its young upon milk, which, as 
you know, fishes never do. 
3. Its body is not covered with scales, but with 
a black, uneven skin, which is tough and hard, 
with a few short stiff* hairs growing on it. 
4. Although the sea-cow's tail is shaped like a 
large fin, it is not like a fish's fin, for it is not 
spread out upon ribs, or ''rays", and it lies flat, 
or crossways, instead of being upright like the 
;tail-fin of a fish. 
