. Lessons in nature study. Nature study. 137 Eggs of Frogs, Toads and Salamanders. Toads, frogs and salamanders (water dogs, inud-puppies) lay their eggs in water. Here the eggs hatch out into tadpoles. In the tadpole stage they breathe by means of gills, at least in the earlier part of this stage. Later they gradually develop lungs and finally become air breathers. The toad and frog tad- poles gradually lose their tails by absorbing them, while a. Fi^. 79. The tiger salamander. salamander tadpole's tail develops to a considerable size and is retained thru Hie as a Ewimming organ to be used wh
. Lessons in nature study. Nature study. 137 Eggs of Frogs, Toads and Salamanders. Toads, frogs and salamanders (water dogs, inud-puppies) lay their eggs in water. Here the eggs hatch out into tadpoles. In the tadpole stage they breathe by means of gills, at least in the earlier part of this stage. Later they gradually develop lungs and finally become air breathers. The toad and frog tad- poles gradually lose their tails by absorbing them, while a. Fi^. 79. The tiger salamander. salamander tadpole's tail develops to a considerable size and is retained thru Hie as a Ewimming organ to be used when the animal goes to w.^iter. One of the most common salamanders in California is the red-bellied salamander which is found in great numbers in the ponds and streams in winter during the egg lay- ing season. The spotted tiger salamander, fig. 79, is also to be found. Any of the salamanders may be kept in a box, the bot- tom of which is covered with moist earth in which ferns or moss is growing. In winter the red-bellied salamander does well in the aquarium, or any vessel of water. It should be well fed with earth worms. The eggs of toads, frogs and salamanders should be gathered and placed in the aquaria and tlieir development watched. 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 Jenkins, Oliver Peebles; Kellogg, Vernon L. (Vernon Lyman), 1867-1937. joint author. San Francisco, The Whitaker & Ray Company
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