sary. The completing of the hole occupied perhaps five minutes. It then, without any pause, drew its head completely into its shell, raised the rear a little, and protruded and dropped a wet, flesh-colored egg into the hole, one end foremost. Then it put out its head again a little slowly, and placed the egg one side with one hind foot. After a delay of about two minutes it again drew in its head and dropped another, and so on to the fifth, drawing in its head each time, and pausing somewhat longer between the last. The eggs were placed in the hole without any particular care, only well down flat, and each out of the way of the next. I could plainly see them from above.
After ten minutes or more, without pause or turning, it began to scrape the moist earth into the hole with its hind legs, and, when it had half filled it, carefully pressed the earth down with the edges of its hind feet, dancing on these alternately for some time, as on its knees, tilting from side to side, pressing by the whole weight of the rear of its shell. When it had drawn in thus all the earth that had been moistened, it stretched its hind legs further back and to each side, and drew in the dry and lichen-clad crust, and then danced upon and pressed that down, still not moving the rear of its shell more than one inch to right or left all the while, or chang-
