As befits a gigantic mammal possessing huge jaws armed with rows of fighting teeth, the sperm whale is a much more pugnacious animal than the bowhead. There are many records of whale-boats being smashed by them, and several well-authenticated cases of enraged bull cachalots having charged and crushed in the sides of whaling ships, causing them speedily to founder. The sperm whale yields oil of a better quality than the bowhead. Its huge head always contains a considerable number of barrels of specially fine-grade oil, which produces the spermaceti of commerce. Ambergris, having an excessively high value for use in the manufacture of certain perfumes, is a product occasionally formed in the digestive tract of the sperm whale. The name cachalot is one to conjure with. It brings up visions of three-year voyages to the famed South Seas, palm-bedecked coral islands, and idyllic days with dusky islanders. As in the case of the Greenland bowhead, however, this animal has been hunted until only a small fraction of its former numbers survives and the romantic days of its pursuit are gone, never to return. THE LARGER NORTH AMERICAN MAMMALS INDEX TO TEXT AND ILLUSTRATION PAGES Text Illustration page. page. Antelope, Prong-horn 452 451 Badger 420 419 Bear, Alaskan Brown--(_Frontispiece_) 441 Bear, Black 437 439 Bear, Cinnamon or Black 437 439 Bear, Glacier 437 439 Bear, Grizzly 440 442 Bear, Polar 436 438 Beaver, American 441 443 Beluga or White Whale 468 470 Bison, American, or Buffalo 461 463 Bobcat or Bay Lynx 409 411 Bowhead or Greenland Right Whale 469 471 Buffalo or American Bison 461 463 Cachalot, or Sperm Whale 472 471 Caribou, Barren Ground 460 422 Caribou, Woodland 460 459 Caribou, Peary, or Barren Ground 460 422 Cat, Jaguarundi, or Eyra 413 415 Coyote, Arizona or Mearns 424 423 Coyote, Mearns or Arizona 424 423 Coyote, Plains, or Prairie Wolf 424 423 Deer, Arizona White-tailed 457 458 Deer, Black-tailed 456 455 Deer, Mule 453 455 Deer, Virginia or White-tailed 456 458 Deer, White-tailed 456, 457 458 Elk, American 453 454