. Edinburgh Journal der Naturgeschichte und der physikalischen Wissenschaften. Wenn die Eier ihrer Zeit geblieben, die Raupe oder Larve, platzt aus seiner Gefangenschaft. Zunächst ist es sehr klein, aber steigt täglich, bis es seine volle Größe erreicht hat, wie in Abbildung 3, die die Raupe des PUR-gesehen-ple Kaiser Schmetterling (Aptera Iris). Die große proportional Bulk, an dem viele Raupen ankommen, im Vergleich zu ihrer ursprünglichen Größe, wenn sie von der Shell entstehen, ist überraschend. Die Larve der Ingwergewächse (Zingiberaceae ligidperdaj, auf das Erreichen der vollen Größe, ist sieben

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. Edinburgh journal of natural history and of the physical sciences . When the eggs have remained their proper time, the caterpillar, or larva, bursts from its confinement. At first it is exceedingly small, but increases daily, until it reaches its full size, as seen in figure 3, which represents the caterpillar of the Pur- ple Emperor Butterfly (Aptera Iris). The great proportional bulk at which many caterpillars arrive, in comparison to their original size when they emerge from the shell, is surprising. The larva of the Goat Moth (Cossus ligidperdaj, on attaining its full magnitude, is seventy-two thou- sand times heavier than when it first bursts into life; and the maggot of the Blue Fly is, in twenty-four hours, one hundred and fifty-five times heavier than at its birth. Many caterpillars consume more than twice their own bulk of food every twenty-four hours. The cause assigned for this is, that their stomachs have not the power of dis- solving vegetable matter, but merely the faculty of extracting their juices. MTien the larva has attained its full size, it soon afterwards ceases to eat, becomes exces- sively restless, and searches for a place fitted to its nature, to which it may retire, for the purpose of being transformed from one state of existence to another, and of assuming its pupa condition. Some spin for themselves a covering of silky fila- ments, while others simply attach themselves to the under side of a leaf or branch, as represented in figure 4, which is the pupa of the Purple Emperor. After remain- ing for some months in this state, the concealed animal bursts its casement, and emerges as the perfect Butterfly; in which condition it exists only for a very hmitcd period; and, after having provided for the continuance of its race, speedily dies. The transformation of insects, however, consists rather in a series of developments than in any absolute metamorphosis, being only a transition of changes in organs which Ue concealed from human view. The c

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• bookcentury1800
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• buchjahr1835