Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 METAMORPHOSIS 243 other caterpillars. Caterpiliars should be taken with their food plant, the stein of plant placed in a bottle filled with moist sand, and this surrounded with soil in a flower-pot. In order to keep the larvae from roving, a number of devices can be used. Breeding-Cage.— A larnp-chimney or lantern-globe with Swiss muslin tied over the top (Fig. 188) can be placed over the food plant, or where many larvae are being studied, a box can be well used. The soil must contain about t
Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 METAMORPHOSIS 243 other caterpillars. Caterpiliars should be taken with their food plant, the stein of plant placed in a bottle filled with moist sand, and this surrounded with soil in a flower-pot. In order to keep the larvae from roving, a number of devices can be used. Breeding-Cage.— A larnp-chimney or lantern-globe with Swiss muslin tied over the top (Fig. 188) can be placed over the food plant, or where many larvae are being studied, a box can be well used. The soil must contain about the same degree of moisture that shaded earth will contain; it must not, be soaked, but can be kept moist, in the case of the flower-pot, by keep- ing water iu the saucer beneath the flower-pot. The earth in the screened box can be sprinkled lightly, but fre- quently enough to retain the right de- gree of moisture. Many larva.'1 enter the ground to pupate. Should the soil be too moist the pupa will mold and die. Should it be too dry the insect will not develop properly. A fresh supply of food should be furnished daily, and all litter removed from the breeding-cage. It will very often be found impracticable to remove a part of the old food when new food is introduced; since it is not best to disturb the caterpillar, but to wait until it has moved from the old food material to the new. Records.— Always keep beside the breeding-cage pen- cil and note-paper, to make notes of every change just FIG. 188. A conven- ient breeding-cage.
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