The perfect frog, after transformation, is smaller than the larva.
The importance of the osmotic pressure of sea-water in biology will be easily understood from the fact that a frog placed in sea-water loses water by exosmosis and soon becomes 20% lighter than its original weight, while a true salt-water fish suddenly transferred to fresh water gains water by endosmosis, swells up and quickly succumbs.
CUCKOO-SPIT, a frothy secretion found upon plants, and produced by the immature nymphal stage of various plant-lice of the familiar Cercopidae and Jassidae, belonging to the homopterous division of the Hemiptera, which in the adult condition are sometimes called frog-hoppers.
Ranarum is found in the alimentary canal of the frog and growing on its excrement.
In the rivers and lakes pike, pickerel, white fish and sturgeon supply food for the natives, and the brook trout is found in the small mountain streams. The turtle and frog also appear.