TWENTY YEARS IN THE PHILIPPINES.
from the spot where they are reposing, there issues a continual croaking, and so loud a noise, that one scarcely believes it to be produced by so small an insect. The following morning they leave at day-break, and the trees upon which they have reposed are left stripped and broken, as though the lightning had swept the forest in every direction; they pursue their course elsewhere to commit fresh ravages. At certain periods they remain on vast plains or on fertile mountains ; where, elongating the extremity of their bodies in the form of a gimblet, they pierce the earth to the depth of an inch and upwards to deposit their eggs. The operation of laying being completed, they leave the ground pierced like a sieve, and disappear, for their existence has now reached its termination. Three weeks afterwards, however, the eggs open, and myriads of young locusts swarm the earth. On the spot where they are born, whatever will serve them for food is quickly consumed. As soon as they have acquired sufficient strength they abandon their birth-place, destroy all kinds of vegetation that comes in their way, and direct their course to the cultivated fields, which they desolate until the period when