Elements of Zo÷logy: A Textbook

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Scribner, 1875 - Zoology - 503 pages
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This book is intended to give an outline of the Animal Kingdom, and thereby to present the elementary facts and principles of Zo÷logy.

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Page 63 - Man, and in most other mammals the ear is divided into three portions — the external ear, the middle ear, and the internal ear. The external ear consists of the conch and the anditory tube ; it is in the latter that the ear-wax is formed.
Page 3 - Rolleston, whilst questioning the propriety of this step, is forced to conclude that " there are organisms which at one period of their life exhibit an aggregate of phenomena such as to justify us in speaking of them as animals, whilst at another they appear to be as distinctly vegetable.
Page 172 - ... form. In the southeastern part of the State it is rare save during the migrations. It breeds throughout the State. The two species of Cuckoos are confounded by most people. Remarks which are made concerning the benefits of the Yellow-billed Cuckoo apply equally to this. The European Cuckoo is noted for its habit of depositing its eggs in the nests of other birds. Our species have been but very rarely found guilty of so doing.
Page 150 - A History of North American Birds, by SF Baird, TM Brewer and R. Ridgway. Land Birds. Illustrated by 64 colored plates and 593 woodcuts.
Page 295 - Beetle (Lucanus cervus) has been known to gnaw a hole an inch in diameter through the side of an iron canister in which it was confined, and on which the marks of its jaws were distinctly visible, as proved by Mr. Stephens, who exhibited the canister at one of the meetings of the Entomological Society.
Page 430 - It has lately been discovered that " the larvae of Ascidians are related to the Vertebrata, in their manner of development, in the relative position of the nervous system, and in possessing a structure closely like the chorda dorsalis of vertebrate animals.
Page 434 - ... the animal. These valves, though unequal in size, are symmetrical in shape. The dorsal valve is the smaller, and is always free and imperforate. The larger valve is the ventral, and has a prominent beak through which the organ of adhesion passes, by which the animal is attached to submarine bodies. The two valves are articulated by two curved teeth developed from the margin of the ventral valve, and received by sockets in the dorsal, and this makes a hinge so complete that the two valves cannot...
Page 63 - The internal ear is situated within the temporal bone, and is composed of three parts — the vestibule, the semi-circular canals, and the cochlea.
Page 233 - The ancient Egyptians made it the emblem of the protecting divinity of the world, and sculptured it on the sides of a globe upon the gates of their temples. By pressing this snake on the nape, the jugglers of Egypt throw it into a stiff and immovable condition, which they call turning it into a rod. It is probably the Asp of Egypt, and Asp of Cleopatra.
Page 108 - EQUID.E, OR HORSE FAMILY. — This Family, called Solepedes by Cuvier, comprises animals which have only one apparent toe and a single hoof to each foot ; although under the skin, on each side of their metatarsus and metacarpus, there are spurs representing two lateral toes. The Genus Equus comprises all the species.

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