[May 10th 1916]
ably hundreds of thousands, of square miles in the Arabian deserts, and so densely are they packed, in places that they paint the sands an Autumn green.
The locusts are in continual motion; all progress in in the same direction. Their rate of movement is slow by uniform; about one mile in every three hours. As in the flight of the adult locust; so also in this vast body of countless insects, the progress is orderly; its movements are governed by uniformity in its individuals and discipline in its mass. Each locust, now creeping a few inches, then halting for a moment, then again creeping or advancing by a series of hops or climbing over a desert shrub, added its little share to the stream of insect life.