inclosethemselves in sawdust, and others living in water, undergotheir changes in cases attached to the underside of the leavesof aquatic plants. The exuberance of variation that Naturethus displays in her methods is all the more extraordinarywhen we consider her economy of material. The same… … COCOONS OF THE TENEIDES OF BRAZIL. tial, character of the delicate warmth-loving insect, is its ca-pability, if needful, of surviving intense cold. The cocoonsof the Luna, and many other moths, lie on the ground, andmust be frozen through by every frost; the chrysalids ofmany insects remain utterly…
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