SERPENTS AND REPTILES. 
221 
but its general tinge is green or olive-brown, with 
irregular streaks of black* 
60. It deposits its spawn in March or April, con- 
sisting of a large heap of gelatinous, transparent 
eggs, in each of which is imbedded the embryo, or 
tadpole, in the form of a black globule. The tad- 
poles are generally hatched in about five weeks. 
61. The form of the Frog is light and elegant, 
and its appearance lively ; the limbs finely calculated 
for its peculiar motions, and the hind feet strongly 
webbed to assist it in swimming. 
62. It lies torpid in winter, usually buried in the 
mud at the bottom of stagnant waters. In the coun- 
tries round Hudson’s Bay, it is often found entirely 
frozen, in which state it is as brittle as glass ; yet, by 
wrapping it in warm skins, and exposing it to a slow 
fire, it will return to life. 
What is the appearance of its spawn or eggs ? Wbat is said of 
its form 1 How does it exist in winter ? 
19 * 
