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It appears also that chrysales similarly treated become moths in about one-tenth of the time required under ordinary circumstances; from which facts, and the celerity of vegetation in Canada and the arctic regions, Professor Simpson infers that, if we in this country were to keep our grain in ice-houses during the winter, we should get quicker and better crops, and avoid the ill consequences which sometimes attend sowing in autumn, or too early in spring.
With reference to the reason of this growth it is of importance to note that experiments, consisting in the application of artificial heat to the chrysales of the swallow-tail and sailor-butterfly, demonstrated that by this means "the fore-wing is drawn out more toward the outer wing-vein, and the rim of the fore-wing becomes more elongated and curved."
At any rate, these little creatures are alive, the batrachians also, and, as I found the next day, pupae and chrysales of one sort or another, for, to my deep emotion, I saw a little white butterfly staggering in the air over the flower-garden of a rustic station named Butley.
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