268 POPULAR SCRIPTURE ZOOLOGY. Of the multitude of the incomplete larve which infested every part of Africa at that time, no adequate idea can be conceived, without having been an eye-witness. As locusts fly in compact bodies, they are very much affected by the wind, and a strong gale will frequently dis- perse or destroy their devastating hosts. There is also an allusion to this in Psalm cix.,“‘I am tossed up and down as the locust.” Mr. Barrow adds:—‘The locusts had completely destroyed every green leaf and every blade of grass, and had not the insulated reeds of the river afforded subsistence for our cattle, our journey must have been ended for want of food. To the southward, where these swarms had already been, the traces of their route appeared as if the surface had been swept by a broom, or as if a harrow had been drawn over it. In coming to the first troop, the waggons, as usual, drove right through them, when they rose up on each side like a cloud, and the horses crossed the group in a gallop: those that escaped from being crushed immediately squatted down again. They swarmed in thousands into our tents, to devour the crumbs of bread that fell on the ground. The present year was the third of their continuance in this part of the colony ; their last departure, with its result, is rather