Which leaveth her eggs in the earth, and warmeth them in dust. The best authorities tell us that in tropical countries ostriches, having scratched a hole in the sand, and deposited their eggs in it, cover the eggs over with a layer of sand, sometimes as much as a foot in thickness, and, leaving them during the daytime to be kept warm by the heat of the sun, only incubate at night.
It is evidently this habit of the bird that is here alluded to. That in cooler countries ostriches do not do this is not to the point. The habit was known in Job's time, and was so noticeable as to characterize the bird to a large extent.