. Nature-study; a manual for teachers and students. Nature study. iS° NATURE-STUDY the skin is used partly as an organ of respiration. As a rule, these animals do not have claws on their toes. But it is their'development from the egg that especially differentiates amphibians from the reptiles. The eggs are generally laid in the water, or in some moist place, where. j>-t. „T. 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 work.
. Nature-study; a manual for teachers and students. Nature study. iS° NATURE-STUDY the skin is used partly as an organ of respiration. As a rule, these animals do not have claws on their toes. But it is their'development from the egg that especially differentiates amphibians from the reptiles. The eggs are generally laid in the water, or in some moist place, where. j>-t. „T. 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 Holtz, Frederick Leopold, 1870-. New York, C. Scribner's Sons
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