. Animal forms; a second book of zoology. Zoology. 182 ANIMAL FORMS pearing as a smooth circular area behind the eye. Organs of touch, smell, and taste are likewise developed in varying degree of perfection. 174. Breeding-habits.—While the great majority of am- phibians mate in the spring and deposit their eggs in the water, often to the accompaniments of croakings and pip- ings almost deafening in intensity, several species, for various reasons, have adopted different methods. Some of the salamanders bring forth young alive, and several species of toads and frogs are known in which the young
. Animal forms; a second book of zoology. Zoology. 182 ANIMAL FORMS pearing as a smooth circular area behind the eye. Organs of touch, smell, and taste are likewise developed in varying degree of perfection. 174. Breeding-habits.—While the great majority of am- phibians mate in the spring and deposit their eggs in the water, often to the accompaniments of croakings and pip- ings almost deafening in intensity, several species, for various reasons, have adopted different methods. Some of the salamanders bring forth young alive, and several species of toads and frogs are known in which the young are cared for by the parent until their metamorphosis is complete. In one of the European toads (Alytes) the male winds the strings of eggs about his body until the tadpoles are. Fig. 110.—Salamanders. The axolotl (the larva of Am- bly stoma tigrinum) and the newt (Diemyetyhis to- rosvs). ready to hatch ; and in a few species of tree-toads the eggs are stored in a great pouch on the back of the parent until the early stages of growth are over. In the Surinam toad of South America the eggs are placed by the male on the back of the female, and each sinks into a cavity in the spongy skin. Here they pass through the tadpole stage without the usual attendant dangers, and emerge with the form of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jordan, David Starr, 1851-1931; Heath, Harold, 1868- [from old catalog] joint author. New York, D. Appleton and company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
