. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect St-udy 317 support, pushes off the shrunken skin just shed and inserts the hooks, with which it is fur- nished, firmly in the button of silk. Some- times during this pro- cess, the chry-salis loses its hold entirely and falls to the ground, which is a fatal disaster. The chrysalis is yellowish brown and usually looks very much like the ob- ject to which it is at- tached, and is thus un- doubtedly protected from sight of possible enemies. Then some day it breaks open,and from it
. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Insect St-udy 317 support, pushes off the shrunken skin just shed and inserts the hooks, with which it is fur- nished, firmly in the button of silk. Some- times during this pro- cess, the chry-salis loses its hold entirely and falls to the ground, which is a fatal disaster. The chrysalis is yellowish brown and usually looks very much like the ob- ject to which it is at- tached, and is thus un- doubtedly protected from sight of possible enemies. Then some day it breaks open,and from it issues a crumpled mass of very damp insect velvet, which soon ex- pands into a beautiful butterfly. References.—Every- day Butterflies, Scud- der; Moths and Butter- flies, Dickerson; How to. The chrysalis. Photo by M. v. Slingerland. The caterpillar of the black swallow-tail ready to change to a chrysalis. Know the Butterflies, Comstock; Moths and Butterflies, Ballard. LESSON LXX The Black Swallow-Tail Butterfly Leading thought—The caterpillars of the swallow-tail butterflies have scent organs near the head which they thrust forth when attacked, thus giving off a disagreeable odor which is nauseating to birds. Method—In September, bring into the schoolroom and place in the terrarium, or breeding cage, a caraway or parsley plant on which these caterpillars are feeding, giving them fresh food day by day, and allow the pupils to observe them at recess and thus complete the lesson. The Caterpillar and Chrysalis. Observations.—i. Touch the caterpillar on the head with a bit of grass. What does it do? What color are the horns? Where do they come from ? Are there two separate horns or two branches of one horn ? What odor comes from these horns? How does this protect the cater- pillar? Does the caterpillar try to hide under the leaves when feeding? Is this evidence that it is not afraid of birds? 2. Describe the caterpillar as follows: What is its shape? Is it larger toward th
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Keywords: ., bookauthorcomstockannabotsford1, bookcentury1900, bookdecade1910
