There is another story which gives even a better idea of the abundance of rattlesnakes in the new colony. In a quarry, from which the workmen were engaged in getting out stone for the foundations of Princeton College, a wide crack in the rocks was discovered, which led downward to a large cavity; and in this cave were found about twenty bushels of rattlesnake bones. There was no reason to believe that this was a snake cemetery, to which these creatures retired when they supposed they were approaching the end of their days; but it was, without doubt, a great rattlesnake trap. The winding narrow passage leading to it must have been very attractive to a snake seeking for retired quarters in which to take his long winter nap. Although the cave at the bottom of the great crack was easy enough to get into, it was so arranged that it was difficult, if not impossible, for a snake to get out of it, especially in the spring, when these creatures are very thin and weak, having been nourished all winter by their own fat. Thus year after year the rattlesnakes must have gone down into that cavity, without knowing that they could never get out again. The great rivals, in point of numbers, to the herring and other fish in the rivers of New Jersey (and the snakes in their winter quarters underground), were the wild pigeons in the air. Several times in the year the settlers would be visited by vast flocks of these birds, which came in such numbers as to shut out the light of the sun, as if they had been clouds in the sky. They would remain in one place for a few days, and then pass on. As it was unnecessary to use hooks and lines to catch a few fish out of the multitudes which swarmed in the streams, so it was hardly worth while to waste powder and shot on the vast flocks of pigeons which visited New Jersey in those days. When they came to roost in the forests, they could be knocked down with poles and stones; and thousands and thousands of them were thus obtained by the men and boys, and very good eating they were. There was a summer in which the settlers were very much astonished by the advent of a vast army of invaders to which they were not at all accustomed. These were locusts, probably of the kind we now call seventeen-year locusts; and the people were amazed to see these creatures come up out of the ground, clad in their horny coats of mail, which they afterwards cast off, when they appeared as winged creatures.