Outlines of Zoology and Comparative AnatomyFannin, 1874 - Всего страниц: 150 |
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Стр. 28
... glands ; all but two ( the echidna and ornithorhyncus para- doxus ) have teats ; the young are always born in a helpless condition , and the skin is invariably covered , more or less , with hair . OSTEOLOGY . - The skull is united to ...
... glands ; all but two ( the echidna and ornithorhyncus para- doxus ) have teats ; the young are always born in a helpless condition , and the skin is invariably covered , more or less , with hair . OSTEOLOGY . - The skull is united to ...
Стр. 31
... glands exist throughout the whole Mammalian class ( except in the Cetacea ) , and follow closely the type presented in the human race ; in the ant - eater they are greatly developed , and pour their ... gland in the bodies of Mammalia . 31.
... glands exist throughout the whole Mammalian class ( except in the Cetacea ) , and follow closely the type presented in the human race ; in the ant - eater they are greatly developed , and pour their ... gland in the bodies of Mammalia . 31.
Стр. 32
Montgomery Albert Ward. The Liver is the largest gland in the bodies of most animals , and performs a double function — that of elaborating a secretion necessary for digestion , and eliminating an excre- tion of hydro - carbons from the ...
Montgomery Albert Ward. The Liver is the largest gland in the bodies of most animals , and performs a double function — that of elaborating a secretion necessary for digestion , and eliminating an excre- tion of hydro - carbons from the ...
Стр. 33
... glands and eyelids , except the Cetacea , while in these the sclerotic coat is greatly thickened , as in fishes . There is situated at the inner canthus of the eye of Rumin- ants a gland , called the Harderian gland , for the purpose of ...
... glands and eyelids , except the Cetacea , while in these the sclerotic coat is greatly thickened , as in fishes . There is situated at the inner canthus of the eye of Rumin- ants a gland , called the Harderian gland , for the purpose of ...
Стр. 44
... glands are likewise absent . The Mutilata are divided into two groups : - a . Cetacea ( carnivorous ) . b . Sirenia ( herbivorous ) . Cetacea are the largest of all living Mammals . They com- prise the whale , dolphin , porpoise , and ...
... glands are likewise absent . The Mutilata are divided into two groups : - a . Cetacea ( carnivorous ) . b . Sirenia ( herbivorous ) . Cetacea are the largest of all living Mammals . They com- prise the whale , dolphin , porpoise , and ...
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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...
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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.