Outlines of Zoology and Comparative AnatomyFannin, 1874 - Всего страниц: 150 |
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Стр. 29
... , the coracoid , which is a distinct bone in birds and reptiles , is attached to the scapular arch . In the Mono- tremata alone of Mammals the coracoid remains separate . The humerus and femur , as well as the bones Mammalia . 29.
... , the coracoid , which is a distinct bone in birds and reptiles , is attached to the scapular arch . In the Mono- tremata alone of Mammals the coracoid remains separate . The humerus and femur , as well as the bones Mammalia . 29.
Стр. 45
... attached to the hard palate ; the inner edge of these plates is furnished with a close fringe of whale - bone fibres , by means of which the small molluscs on which this giant feeds are filtered from the water . They have a thick layer ...
... attached to the hard palate ; the inner edge of these plates is furnished with a close fringe of whale - bone fibres , by means of which the small molluscs on which this giant feeds are filtered from the water . They have a thick layer ...
Стр. 47
... attached to the sides of the body ) , and often includes the tail . This membrane is used in flight , and is analogous to the wing of a bird . When at rest , they suspend themselves by means of the thumb , which is furnished with a claw ...
... attached to the sides of the body ) , and often includes the tail . This membrane is used in flight , and is analogous to the wing of a bird . When at rest , they suspend themselves by means of the thumb , which is furnished with a claw ...
Стр. 51
... attached to their transverse processes . The bodies and spinous processes of the dorsal vertebræ are firmly con- solidated together , and splints of bone proceeding from the transverse processes overlap each other , increasing the sta ...
... attached to their transverse processes . The bodies and spinous processes of the dorsal vertebræ are firmly con- solidated together , and splints of bone proceeding from the transverse processes overlap each other , increasing the sta ...
Стр. 52
... attached a tuft of feathers called the " bastard wing . " Succeeding the metacarpus there are two fingers , one of which has only one phalanx , while the other has two or three . In the penguin there are one or two small bones situated ...
... attached a tuft of feathers called the " bastard wing . " Succeeding the metacarpus there are two fingers , one of which has only one phalanx , while the other has two or three . In the penguin there are one or two small bones situated ...
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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.