The first caterpillar had measured five inches, and the next one three, but it was transforming.  Whether the others were males and this a female, or whether it was only that it had grown under favourable conditions, I could not tell.  It was differently marked on the sides, and in every way larger, and brighter than the others, and had not finished feeding.  Knowing that it was called the `horned hickory devil’ at times, hickory and walnut leaves were placed in its box, and it evinced a decided preference for the hickory.  As long as it ate and seemed a trifle larger it was fed.  The day it walked over fresh leaves and began the preliminary travel, it was placed on some hickory sprouts around an old stump, and exposures made on it, or rather on the places it had been, for it was extremely restless and difficult to handle.  Two plates were spoiled for me by my subject walking out of focus as I snapped, but twice it was caught broadside in good position.

While I was working with this caterpillar, there came one of my clearest cases of things that `thrust themselves upon me.’  I would have preferred to concentrate all my attention on the caterpillar, for it was worth while; but in the midst of my work a katydid deliberately walked down the stump, and stopped squarely before the lens to wash her face and make her toilet.  She was on the side of the stump, and so clearly outlined by the lens that I could see her long wavering antennae on the ground glass, and of course she took two plates before she resumed her travels.  I long had wanted a katydid for an illustration.  I got that one merely by using what was before me.  All I did was to swing the lens about six inches, and shift the focus slightly, to secure two good exposures of her in fine positions.  My caterpillar almost escaped while I worked, for it had put in the time climbing to the ground, and was a yard away hurrying across the grass at a lively pace.

Two days later it stopped travelling, and pupated on the top of the now hardened earth in the bucket that contained the other two.  It was the largest of the pupae when it emerged, a big shining greenish brown thing flattened and seeming as if it had been varnished.  On the thin pupa case the wing shields and outlines of the head and different parts of the body could be seen.  Then a pan of sand was baked, and a box with a glass cover was filled.  I laid the pupa on top of the sand, and then dug up the first one, as I was afraid of the earth in which it lay.  The case was sound, and in fine condition.  All of these pupae lived and seemed perfect.  Narrow antennae and abdominal formation marked the big one a female, while broader antlers and the clearly outlined `claspers’ proved the smaller ones males.  A little sphagnum moss, that was dampened slightly every few days, was kept around them.  The one that entered the ground had pushed the earth from it on all, sides at a depth