REPTILES. 
31 
next case could speak, it might tell how the bold 
frigate-bird used to rob it of its food by making it 
disgorge the fish it had taken. 
n. “ The feet of the swimmers, as you have most 
likely noticed, are webbed, either partly or wholly; 
Frigate-bird. 
the webbing forming a paddle by which the bird 
drives itself through the water.” 
REPTILES. 
1. In order to be ready for the boys’ next visit, 
Mr. Johnson took from a box several skins of snakes 
and lizards and laid them on the table, together 
with some hollow, horny cases which had once been 
the homes of tortoises and small turtles. 
Before he had quite finished his preparations the 
boys arrived. 
2. “Come this way!” Mr. Johnson called to them, 
in his cheery way. “ We shall talk about the third 
class of backboned creatures to-day, and I am 
getting some of them ready for you to see.” 
