156 
NATURAL HISTORY. 
THE SWALLOW. 
150. The Swallow has a very short bill, slightly 
curved ; it has long wings, and a forked tail. It 
has a peculiar twittering voice, flies with extreme 
rapidity, and scarcely ever walks. 
151. There are two species common with us ; the 
Chimney Swallow, which builds its nest in chim- 
neys, and another which suspends its nest in barns 
and dilapidated buildings. 
152. In the spring, when the solar beams begin 
to rouse the insects from their torpidity, the Swallow 
is seen returning from its long migrations, and his 
return is said to be a sure sign that cold weather 
has ceased. 
THE MARTIN. 
153. The Martin is smaller than the Swallow, 
I escribe the Swallow. What kinds are common to this coun- 
try ? At what season do Swallows appear ? 
