Outlines of Zoology and Comparative AnatomyFannin, 1874 - Всего страниц: 150 |
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Стр. 47
... wing ) , or bats , constitute a well - marked order of Mammals , and have the following distinguishing characteristics : -The fore limbs are much longer than the hind ones , and all the fingers , except the thumb , are greatly elongated ...
... wing ) , or bats , constitute a well - marked order of Mammals , and have the following distinguishing characteristics : -The fore limbs are much longer than the hind ones , and all the fingers , except the thumb , are greatly elongated ...
Стр. 50
... wings . The lungs communicate with air sacs scattered through the body , and many of the bones are pneumatic . The heart consists of four chambers , and the blood corpuscles are nucleated . OSTEOLOGY . - The skeleton of a bird possesses ...
... wings . The lungs communicate with air sacs scattered through the body , and many of the bones are pneumatic . The heart consists of four chambers , and the blood corpuscles are nucleated . OSTEOLOGY . - The skeleton of a bird possesses ...
Стр. 52
... 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 at the elbow - joint , which form a kind of ...
... 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 at the elbow - joint , which form a kind of ...
Стр. 55
... wings and legs . The sympathetic system is well developed , and is arranged in the same way as in man . The situation of the cervical ganglia is remarkable , as they are lodged in a long Aves . 55 Circulation Nervous System.
... wings and legs . The sympathetic system is well developed , and is arranged in the same way as in man . The situation of the cervical ganglia is remarkable , as they are lodged in a long Aves . 55 Circulation Nervous System.
Стр. 59
... wings and tails , the latter form the general covering of the body . The largest quill feathers arise from the bones of ... wing coverts , " which are divided into primary and secondary , while the feathers of the tail are furnished with ...
... wings and tails , the latter form the general covering of the body . The largest quill feathers arise from the bones of ... wing coverts , " which are divided into primary and secondary , while the feathers of the tail are furnished with ...
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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.