24 
SECOND BOOK. 
7. “ Yes, they are like long curved chisels,” said 
Arthur. 
“ Those teeth are meant for gnawing,” said Mr. 
Johnson, “ and all creatures that have the same 
kind of teeth — 
such as mice, rab- 
bits, beavers — form 
a separate order. 
Most of them are 
small animals, but, 
Skull ol Gnawing Animal (Eat). Natural size. knOW, Very 
destructive. 
8. “ Lest I should tire you, I will only briefly 
mention some of the other orders. 
“ There are the insect-eaters, with pointed teeth 
for crushing their favourite food; and there are the 
bats, known as the 
hand - winged order, 
because a web is 
stretched between their 
long fingers for use in 
flying. 
Skull of Insect-eating Animal (Hedgehog). ^ “Finally there 
are the whales, porpoises, and manatees, which, fish- 
like in form and furnished with flippers, disport 
themselves in the sea.” 
