. Nature-study; a manual for teachers and students. Nature study. FROGS, TOADS, SALAMANDERS, SNAKES, ETC. 149 is now, the average boy feels that he is doing a sort of duty in killing a snake on sight, and he delights in killing frogs and toads just for sport. There is really no excuse for this killing, when we remem- ber that it is generally the useful or harmless amphibians and reptiles that are killed. There are no venomous snakes in the northern half of the United States except the rattle- snakes, and these are pretty well exterminated in the more settled regions. There are no other poi- so
. Nature-study; a manual for teachers and students. Nature study. FROGS, TOADS, SALAMANDERS, SNAKES, ETC. 149 is now, the average boy feels that he is doing a sort of duty in killing a snake on sight, and he delights in killing frogs and toads just for sport. There is really no excuse for this killing, when we remem- ber that it is generally the useful or harmless amphibians and reptiles that are killed. There are no venomous snakes in the northern half of the United States except the rattle- snakes, and these are pretty well exterminated in the more settled regions. There are no other poi- sonous reptiles in this region, and the amphibians are all harmless. In the South there are the poisonous copperheads, moccasins, and the little coral snake. In the Southwest there is one poisonous lizard, the Gila monster. Most people call salamanders lizards, and do not know what amphibians are. Amphibians, such as the frog, toad, and salamander, have a soft skin without scales. This is generally kept moist for a time by an excreted liquid. The boys will know that their frogs for fishing will die if they are not kept moist. This is necessary for the reason that. Fig. 30. A Dish of Frog's 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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