. La narrazione della scoperta e dell'avventura nei mari polari e regioni [microformati] : con le illustrazioni del loro clima, di geologia e di storia naturale, e di un account della balena-pesca. Storia naturale; Sciences Naturelles. ^1 AK1MAL VITA. Hakes. Questo rese balena anche la particolare sostanza aromatica chiamato ambergris, formata sotto circostanze peculiari nel retto, e annullata come feci. Un'altra specie, chiamato narwal, circa sedici metri di lunghezza e otto di circonferenza, sembra poco differiscono da una piccola balena, tranne in una zanna sporgenti dalla sua mascella superiore, da tre a dieci piedi in lengt

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. Narrative of discovery and adventure in the polar seas and regions [microform] : with illustrations of their climate, geology, and natural history, and an account of the whale-fishery. Natural history; Sciences naturelles. ^1 AK1MAL LIFE. Hakes. This whale yields also the peculiar aromatic substance called ambergris, formed under peculiar circumstances in the rectum, and voided as feces. Another species, called the narwal, about sixteen feet long and eight in circumference, appears to differ little from a small whale, except in a tusk projecting from his upper jaw, three to ten feet in length, which, suggesting to the sailors the idea of a horn, has pro- cured for him the appellation of the sea-unicorn. He is swift, yet is taken without much difficulty, and yields two or three tons of very fine oil. The dol- phin, another cetaceous animal of poetic fame, occa- sionally occurs; and the grampus appears often in numerous herds, guided by some of larger size. The beluga^ or white whale, is also a small species, dis- tinguished chiefly by its colour. All the shores and borders of the Arctic zone are crowded with huge amphibious races, which appear to form an intermediate link between whales and quadrupeds, —the mammalia of the sea and those of the land. Among these is to be distinguished the morse or walrus {trichecus rosmarus), which bears such a resemblance to our domestic quadnipeds, that sailors, according to their various impres- sions, have given it the title of sea-horse or sea- cow. It is a large, shapeless, unwieldy creature, 12 to 15 feet in length, and from 8 to 10 in circum- ference ; the head small, the limbs short, of an inter- mediate character between fins and legs. As a de- fence against the extreme cold, these animals not only have skins an inch thick, covered with close hair, but enjoy like the other cetacea a coating of oily fat, with whicn their bodies are completely envelopedf. Thus cased, they lie stretched on the ice in the depth of winter, wit

Parole chiave associate all'immagine

• bookcentury1800
• booksubjectnaturalhistory
• booksubjectsciencesn