Children's own library . THE C03IMON SEAL The length of the common Seal is about four or fivefeet, and its weight often two hundred and twenty-fourpounds. There are many Seals known, among which are theSea Leopard, a spotted species; the Harp Seal, socalled because the markings on its back resemble aharp; the Sea Bear, and the Sea Lion. The Walrus inhabits the northern seas. Its mostremarkable point is the great length of its upper ca-nine teeth, which extend downward for nearly two feet, woods natural history 57 and resemble the tusks of the elephant. They furnishvery fine ivory, and are exte
Children's own library . THE C03IMON SEAL The length of the common Seal is about four or fivefeet, and its weight often two hundred and twenty-fourpounds. There are many Seals known, among which are theSea Leopard, a spotted species; the Harp Seal, socalled because the markings on its back resemble aharp; the Sea Bear, and the Sea Lion. The Walrus inhabits the northern seas. Its mostremarkable point is the great length of its upper ca-nine teeth, which extend downward for nearly two feet, woods natural history 57 and resemble the tusks of the elephant. They furnishvery fine ivory, and are extensively used by dentistsin making artificial teeth. These tusks are used bythe Walrus for climbing the rocks or heaps of ice,and also for digging up the sea-weeds on which the. HEAD OF WALRUS animal mostly subsists. It will alsoeat shrimps and young seals. The Walrus is hunted for the sakeof its oil, its flesh, its skin, and its teeth. Its length isabout sixteen feet, and it yields from twenty to thirtygallons of excellent oil. The Cetacea, or Whale tribe, closely resemble thefishes, but are distinguished by possessing warm blood,and, in consequence, are forced to rise at intervals inorder to breathe the air. K; 58 woods natural history The Whale remains under water for a time muchlonger than could be borne by any other warm-bloodedanimal, and is furnished with means for supportinglife during its stay beneath the water. Along the interior of the ribs there is a vast collec-tion of blood-vessels, capable of containing a large quan-tity of blood, having no immediate connection with thatportion of the blood which is already circulating in thebody. As fast as the exhausted and poisonous bloodreturns from its work, it passes into another reservoiradapted for its
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