quantities. When fresh leaves were brought, and they were crawling over them, then there would be a rustling sound, like the noise of rain on foliage. This was made by them as they began to eat.
In this way the old worms lived five days. By this time they had grown enormously, and would eat ten times as much as at first.
I knew that on the fifth day it was time for them to roll themselves up, and I was on the watch for this to begin. In the evening of the fifth day one of the old worms stretched himself out on the paper and ceased to eat or to move.
During the next twenty-four hours I watched him for a long time. I knew that the worms shed their skins a number of times, when they have grown so large that their shells are too small for them, and then they put on new ones.
One of my companions took turns with me in watching the process. In the evening he cried:—
"Come; he is beginning to undress!"
I went over to the shelf, and was just in time to see that this worm had fastened his old shell to the paper and had made a rent near his mouth, was thrusting out his head, and was struggling and twisting so as to get out; but his old shirt would not let him go.
I looked at him for a long time struggling there and unable to extricate himself, and I felt a desire to help him.
I tried to pick him out by means of my finger-nail, but instantly saw that I had done a foolish thing. A sort of liquid gushed over my finger-nail, and the worm died.
I thought that it was his blood; but then I saw that the worm had under his skin a watery juice for the purpose of facilitating the process of slipping out of the shirt. My finger-nail had evidently disturbed the formation of the new shirt, for the worm, though he was loosened, speedily perished.
I did not touch any of the others, and in the same way they all came out of their shirts. A few of them,
