SPEUSIPPUS (4th century B.C.), Greek philosopher, son of Eurymedon and Potone, sister of Plato, is supposed to have been born about 407 B.C. He was bred in the school of Isocrates; The Sperm-Whale (Physeter macrocephalus).
Sperm-oil is obtained from the cavity in the head of the sperm-whale, and from several smaller receptacles throughout the body of the animal.
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.