AIR, ANIMAL. D 
feel the air, and are surrounded by it ; 
but it is not more certain that air is 
round every thing, than that some 
portion of it is also contained in every 
thing ; and if the air were to be taken 
out of the mud all the little animals that 
are in it would die, for no animal can live 
without air. 
Lucy, Yes, for we all breathe the 
air; but you say animals. I thought 
animals were large creatures, men, horses, 
or dogs. 
Mother, Men, horses, and dogs, are 
all animals ; but it is not size, it is life, 
which makes them animals ; every living 
thing that moves on the face of the earth 
is an animal, however small its size may 
be. 
Lucy, Thank you, mamma. I un- 
derstand every thing you have told me 
very well. Will you now tell me the 
history of this pretty moth ; and all 
about the caterpillar ; and what was its 
food ; and how it lived ; and — 
Mother, Softly, softly, my little girl : 
