moss; but when exhibiting my cherished pet to admiring friends the first question was sure to be, "What does he feed upon?" and one had to take refuge in vague generalities about organic substances, &c., which might mean anything, and then, by diverting attention to some point of interest apart from the food question, the difficulty was generally overcome.
I kept a close watch to see if the beetle would be led by instinct to form its round pellets of mud as is its custom on the banks of the Nile, and having placed its egg in the centre, it begins to roll it from the margin of the river until it is above high-water mark. There it digs a hole and buries the pellet, leaving the sun to hatch the eggs in due time. Travellers who have watched the process describe the untiring way in which both the male and female beetle roll these pellets, often falling down with their burden into holes and ridges in the rough ground; but then their comrades will give them help, and, picking up the ball, they patiently labour on. Walking backwards, having the pellet between their broad hind legs, they push it up and up
