Outlines of Zoology and Comparative AnatomyFannin, 1874 - Всего страниц: 150 |
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Стр. 33
... extremely con- voluted - hence termed the " labyrinth , " - for the purpose of increasing the sentient surface . The sense of hearing is universally present , and the formation of the middle and internal ear is very nearly similar ...
... extremely con- voluted - hence termed the " labyrinth , " - for the purpose of increasing the sentient surface . The sense of hearing is universally present , and the formation of the middle and internal ear is very nearly similar ...
Стр. 45
... extremely interesting . It is thus accomplished : the top of the pharynx is guarded by a strong sphincter muscle , which is closed except when the whale expires , and thus prevents any com- munication between the cavity of the pharynx ...
... extremely interesting . It is thus accomplished : the top of the pharynx is guarded by a strong sphincter muscle , which is closed except when the whale expires , and thus prevents any com- munication between the cavity of the pharynx ...
Стр. 46
... extremely long . The mammæ are pectoral , testes abdominal , and they have vesiculæ semi- nales . They are diphyodont , live on sea - weed , and keep near the shore . VIII . RODENTIA . This constitutes the largest order of Mammals . It ...
... extremely long . The mammæ are pectoral , testes abdominal , and they have vesiculæ semi- nales . They are diphyodont , live on sea - weed , and keep near the shore . VIII . RODENTIA . This constitutes the largest order of Mammals . It ...
Стр. 52
... extremely interesting structures , which shall be briefly de- scribed seriatim . The mouth , the only prehensile organ the bird possesses ( except in the raptores and scansores , which use the foot as well ) , constitutes a beak encased ...
... extremely interesting structures , which shall be briefly de- scribed seriatim . The mouth , the only prehensile organ the bird possesses ( except in the raptores and scansores , which use the foot as well ) , constitutes a beak encased ...
Стр. 56
... extremely imperfect , as the body is clothed with feathers , and the limbs are covered with plumes or horny scales , whereby the bird is rendered ill adapted for receiving sensory impressions from external objects ; it is , however ...
... extremely imperfect , as the body is clothed with feathers , and the limbs are covered with plumes or horny scales , whereby the bird is rendered ill adapted for receiving sensory impressions from external objects ; it is , however ...
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abdomen absent alimentary canal Amphibia anal animals anus aperture aquatic auricle birds bladder blood body bones bony bony pike branchiæ branchial calcareous called canines Carnivora caudal cavity cells cervical vertebræ Cetacea chamber clavicle claws cloaca composed comprise contains coracoid covered developed Digitigrade distinct divided dorsal vertebræ eîdos eldos elongated endoskeleton external extremely feathers feet female fins fishes five toes four front ganglia ganglion gills gland hind limbs horny humerus incisors insects integument intestine larvæ legs lower jaw lungs Mammalia Mammals mandibles maxillæ membrane mollusca mouth muscles muscular nervous system nostrils organs pair pectoral peculiar pelvic arch pharynx placed plates possess present Professor Owen Quadrumana rays respiration ribs rudimentary Ruminants sacs scapula shell single Sirenia situated skin skull soft spine sternum stomach sub-kingdom tail teeth termed terminates transverse processes tubes upper jaw usually valve ventral ventricle vertebral column Vertebrata wings
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Стр. 17 - I believe that animals have descended from at most only four or five progenitors, and plants from an equal or lesser number. Analogy would lead me one step further, namely, to the belief that all animals and plants have descended from some one prototype. But analogy may be a deceitful guide. Nevertheless all living things have much in common, in their chemical composition, their germinal vesicles, their cellular structure, and their laws of growth and reproduction. We see this even in so trifling...
Стр. 149 - Cooper's Dictionary of Practical Surgery and Encyclopaedia of Surgical Science. New Edition, brought down to the present time. By SA LANE, Surgeon to St.
Стр. 18 - Therefore I should infer from analogy that probably all the organic beings which have ever lived on this earth have descended from some one primordial form into which life was first breathed by the Creator.
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Стр. 123 - The sponge represents a kind of subaqueous city, where the people are arranged about the streets and roads in such a manner that each can easily appropriate his food from the water as it passes along.
Стр. 17 - Analogy would lead me one step farther, namely, to the belief that all animals and plants are descended from some one prototype. But analogy may be a deceitful guide. Nevertheless all living things have much in common, in their chemical composition, their cellular structure, their laws of growth, and their liability to injurious influences.
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Стр. 61 - In the hind limb of most birds there is a singular extensor muscle, which arises from the pubis, ends in a tendon which passes to the outer side of the knee-joint, and terminates in the leg by uniting with the flexor digitorum perforatus. The result of this arrangement is, that the toes are flexed whenever the leg is bent upon the thigh, and, consequently, the roosting bird is held fast upon his perch by the weight of his own body.