“ The sperm-whale is one of the most widely distributed of animals, being met with, usually in herds or “schools,” in almost all tropical and subtropical seas, and occasionally visiting the northern seas, a number having been killed around the Shetlands a few years ago. The food of sperm-whales consists mainly of squid and cuttlefish, but also comprises fish of considerable size. ”

“ The lower jaw is extremely narrow, and has on each side from twenty to twenty-five stout conical teeth, which furnish ivory of good quality, though not in sufficient bulk for most of the purposes for which that article is required. The upper teeth are rudimentary and buried in the gum. ”