One cuckoo of my experience that nested in an old orchard, adjoining a potato patch, frequently went there caterpillar-hunting, and played havoc with one wherever found. The shy, deep wood habits of the cuckoo prevent it from coming close houses and into gardens, but robins will take these big caterpillars from tomato vines. However, they go about it rather gingerly, and the work of reducing one to non-resistance does not seem to be at all coveted. Most people exhibit symptoms of convulsions at sight of one. Yet it is a matter of education. I have seen women kiss and fondle cats and dogs, one snap from which would result in disfiguration or horrible death, and seem not to be able to get enough of them. But they were quite equal to a genuine faint if contact were suggested with a perfectly harmless caterpillar, a creature lacking all means of defence, save this demonstration of throwing the head.

When full-fed the caterpillars enter the earth to pupate, and on the fifteenth of October, 1906, only the day before I began this chapter, the Deacon, in digging worms for a fishing trip to the river, found a pupa case a yard from the tomato vines, and six inches below the surface. He came to my desk, carrying on a spade a ball of damp earth larger than a quart bowl. With all care we broke this as nearly in halves as possible and found in the centre a firm, oval hole, the size and shape of a hen's egg, and in the opening a fine fresh pupa case.