. Nature-study; a manual for teachers and students. Nature study. TYPICAL INSECTS 197. Fig. 56. Caterpillar on Milkweed Leaf. That it is alive may be shown by gently pressing it at the thick end, when the other end will wriggle. Apparently the insect in this chrysalis state is not growing or developing. Nevertheless, all this time won- derful transformations are going on within the shell. The cater- pillar is being made over into a butterfly. Wings are developing. The legs become longer, the body becomes markedly divided into head, chest, and abdomen, the biting mouth of the caterpillar change
. Nature-study; a manual for teachers and students. Nature study. TYPICAL INSECTS 197. Fig. 56. Caterpillar on Milkweed Leaf. That it is alive may be shown by gently pressing it at the thick end, when the other end will wriggle. Apparently the insect in this chrysalis state is not growing or developing. Nevertheless, all this time won- derful transformations are going on within the shell. The cater- pillar is being made over into a butterfly. Wings are developing. The legs become longer, the body becomes markedly divided into head, chest, and abdomen, the biting mouth of the caterpillar changes into the sucking tube of the butterfly, the simple eyelets become large and compound, and the rudimentary antenna; become long. Colored hairs and scales develop on the body and wings. These are the principal external changes in the caterpillar going on in the chrysahs. In the cabbage butter- fly it takes two or three weeks to make this change, except in those which pass the winter in this condition. At the right time the chrys- alis bursts and the winged adult butterfly comes out, at first with soft and crumpled wings, which, however, are soon inflated and dried. How different now becomes the life of the aerial, nectar-sipping butterfly from what it was in the voracious, leaf-eating, crawling caterpillar. Collect some nearly grown caterpillars and keep them in cages in the school-room. Feed them regularly upon fresh cabbage leaves. If possible, observe the moulting, the for-. 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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