The animans and man; an elementary textbook of zoology and human physiology
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Identifier: animansmanelemen00kell (find matches)
Title: The animans and man; an elementary textbook of zoology and human physiology
Year: 1911 (1910s)
Authors: Kellogg, Vernon L. (Vernon Lyman), 1867-1937 McCracken, Mary Isabel
Subjects: Zoology Physiology
Publisher: New York, H. Holt and company
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library
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or other ordi-nary fish. The rays and skates arepeculiar ocean fishes, whichlie at the bottom of shal-low-water shores. Theyfeed on crabs, molluscs,and bottom-fishes. Thesmall common skates,tobacco-boxes, abouttwenty inches long, and thelarger barn-door skates,are numerous along theAtlantic coast from Vir-ginia northward. Especi-ally interesting membersof this group, because ofthe peculiar character ofthe injuries produced bythem, are the sting-ray andtorpedoes, or electric-rays.The sting-rays have spinesnear the base of the tailwhich cause very painful FIG. 98. A sea-horse, Hippocampus wounds. The torpedoeskelloggi. (Natural size, 8 inches have two large electrical long; after Jordan and Snyder.) ^^ Qne Qn each side of the body, just behind the head, with which theycan give a strong electric shock. The discharge from alarge individual is sufficient to temporarily disable a man,and were these animals at all numerous they would provedangerous to bathers. Very different from the typical
Text Appearing After Image:
THE VERTEBRATES 199 rays in external appearance are the sawfishes, which belongto this group. The body is elongate and shark-like, andhas a long, saw-like snout.. This saw, which in large indi-viduals may reach a length of six feet and a breadth oftwelve inches, makes its owner formidable among the smallsardines and herring-like fishes on which it feeds. Thesawfishes live in tropical rivers, descending to the sea. Food-fishes and fish-hatcheries.—Most fishes are suit-able for food, though not all. Some are too small to beworth catching or too bony to be worth eating. Some ofthe larger ones, especially the sharks, are tough and rank.A few are bitter and in the tropics a number of species feedon poisonous coelenterates about the coral reefs, becomingthemselves poisonous in turn. But a fish is rarely poisonousor unwholesome unless it takes poisonous food. Wherefishes of a kind specially used for food gather in great num-bers at certain seasons of the year, fishing is carried onextensiv
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Included On The Following Pages:
- Eukaryota (eukaryotes)
- Opisthokonta (opisthokonts)
- Metazoa (animals)
- Bilateria
- Deuterostomia (deuterostomes)
- Chordata (Chordates)
- Vertebrata (vertebrates)
- Gnathostomata (jawed fish)
- Actinopterygii (ray-finned fishes)
- Neopterygii
- Teleostei
- Syngnathiformes
- Syngnathidae (pipefishes and seahorses)
- Craniata (Craniforma)
- Acanthopterygii
- Biota
- Unikonta (unikont)
- Holozoa
- Filozoa
- Apoikozoa
- Eumetazoa
- Olfactores
- Acanthomorpha
- Hippocampinae
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