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of clustering together in large groups, sometimes in huge knots, in lofts, lean-tos, greenhouses or elsewhere indoors, usually close up against a window frame. Here they remain until driven out again by the new March sunshine. And here they are

today, nearly 150 years later."I have known one make its way habitually through a zinc pipe into a green-house, and do much service there by picking aphides from the slender stalks of herbaceous plants, which bent into the form of an arch under even its