FACTS Aiiorr \\i:i.i. known ani.maf.s. 



!tr, 



insects, and in such niinihcis in (lanip wratlier as to give 

 rise to the Ix'Hof, still jK)|)ulaily adhered (u in many sections, 

 that it has rained IVotis. 



Fig. 7. Tiansformations of frog : a, newly hatched tadpoles ; b, >ame enlarged, 

 showing extemil gills ; c, d, e, later stages, the gills enclosed by the opercular 

 membrane ; /, stage with hind limbs developing; g, after molt with both pairs of 

 limbs showing; //, partial atrophy of tail ; »', full formed young frog. (.After Rosel. ) 



They iilun.i;e into the nuid auain at the approach of 

 winter, hut next year and each successive year, go through 

 a performance of which many of you are not prohahly 

 aware. They cast off their old frozen skin each si>ring,and 

 \\\\< is the way in whicli it is done, as related by an eye wit- 

 ni'ss. Let us imagine we arc on the edge of some swamp 

 and are watching some large fellow who is ahout to undress 

 himself. Like the rest of his hretlncn lie has had sudi a 

 shamefully long .sleep, that on awakening he feels dull and 



