Cockroaches are native to all the warmer parts of the world, and we have a common large brown one, and some others of our own; but the pest of our kitchens is the small Oriental species whose origin was Asiatic, and which probably accompanied the earliest westward wanderings of mid-Asian men, and established themselves as boarders by the camp fires of the cave men. At any rate, the "black beetles," as the British call them—wrongly in both particulars—are now settled wherever ships have gone or civilized goods have been carried. As they first began to be really troublesome in New York City about the time when the Croton water was introduced (1842) they got the local name "Croton bug," but they are the world-wide Blatta orientalis , scampering around where they are not wanted, carrying a queer packet of eggs under the tail.