Outlines of Zoology and Comparative AnatomyFannin, 1874 - Всего страниц: 150 |
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Стр. 28
... covered , more or less , with hair . OSTEOLOGY . - The skull is united to the spinal column by means of two condyles ; the lower jaw consists of two halves , each composed of a single piece and united in front , there is no quadrate ...
... covered , more or less , with hair . OSTEOLOGY . - The skull is united to the spinal column by means of two condyles ; the lower jaw consists of two halves , each composed of a single piece and united in front , there is no quadrate ...
Стр. 39
... covered with horny elevations , that adapt it for the purpose of licking the flesh off the bones of their victims . ( B. ) Plantigrade Carnivora . - The animals included in this division apply the sole of the foot to the ground in ...
... covered with horny elevations , that adapt it for the purpose of licking the flesh off the bones of their victims . ( B. ) Plantigrade Carnivora . - The animals included in this division apply the sole of the foot to the ground in ...
Стр. 40
... covered by a thick pad of integument ; the clavicles are wanting ; the testes are abdominal , and the mammæ pectoral . The elephant , the representative of this order , inhabits forests in the tropical regions of Asia and Africa , and ...
... covered by a thick pad of integument ; the clavicles are wanting ; the testes are abdominal , and the mammæ pectoral . The elephant , the representative of this order , inhabits forests in the tropical regions of Asia and Africa , and ...
Стр. 44
... Covered by hairy skin , e.g. , Giraffe . 2. Covered by horny case ( cavicornia ) , e.g. , Ox , Sheep , Antelope , Goat . . Horns deciduous ( Antlers ) , e.g. , Stags ( cer- vidæ ) . Three distinct types of horns are found among the ungu ...
... Covered by hairy skin , e.g. , Giraffe . 2. Covered by horny case ( cavicornia ) , e.g. , Ox , Sheep , Antelope , Goat . . Horns deciduous ( Antlers ) , e.g. , Stags ( cer- vidæ ) . Three distinct types of horns are found among the ungu ...
Стр. 46
... permanent pulps ; they are large , curved , and covered in front by a layer of hard enamel . The result of this is that the softer dentine wears away more rapidly than the enamel , hence the chiselled shape of the teeth . 46 Vertebrata .
... permanent pulps ; they are large , curved , and covered in front by a layer of hard enamel . The result of this is that the softer dentine wears away more rapidly than the enamel , hence the chiselled shape of the teeth . 46 Vertebrata .
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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.