It is true that many of the caterpillars are ugly and formidable, poor things, to the uninitiated eye, which fails to recognize under this uncomely disguise the crowned and glorious citizens of the air. I had just then a great Cecropia, an able-bodied green gentleman armed with twelve thorn-like, sizable horns, and wearing, along with other agreeable adornments, three yellow and four red arrangements like growths of dwarf cactus plants on the segments behind his hard round green head. Mr. Flint, with an ejaculation of horror, backed off on one crutch and clubbed the other. "My God!" said he, "Kill it! Kill it!" I saved my green friend in the nick of time. The man, with staring eyes, looked from me to the caterpillar; then he leaned over and watched it, in grim silence. He knotted his forehead, made slits of his eyes, gulped, screwed his mouth into the thin red line of deadly determination, and with every nerve braced, even as a martyr braces himself for the stake or the sword, put out his hand, up which the formidable-looking worm walked leisurely. Death not immediately resulting from this daring act, he controlled his shudders and breathed easier. The worm became less and less terrifying; no longer appearing, say, the size of the boa constrictor. A few moments of this harmless meandering about Mr. Flint's hand and arm, and of a sudden he wore his true colors of an inoffensive and law-abiding larva, anxious only to attend strictly to his own legitimate business, the Gargantuan feeding of himself into the pupa from which he would presently emerge one of the most magnificent of native moths. Gingerly Mr. Flint picked him up between thumb and fore-finger, and as gingerly dropped him back into the breeding-cage. He squared his shoulders, wiped his brow, and drew a long whistling breath. "Phe-ew! It took all my nerve to do it!" said he, frankly. "I felt for a minute as if a strong-arm cop'd chased me up an alley and pulled his gun on me. The feeling of a bug's legs on your bare skin is something fierce at first, ain't it? But after _him_ none of 'em can scare me any more. I could play tag with pink monkeys with blue tails and green whiskers without sending in the hurry-call." The setting boards and blocks, the arrays of pins, needles, tubes, forceps, jars and bottles, magnifying-glasses, microscope, slides, drying-ovens, relaxing-box, cabinets, and above all, the mounted specimens, raised his spirits somewhat. This, at least, looked workman-like; this, at least, promised something better than stoking worms! If not hopefully, at least willingly enough, he allowed himself to be set to work. And that work had come in what some like to call the psychological moment. At least it came--or was sent--just when he needed it most.