Outlines of Zoology and Comparative AnatomyFannin, 1874 - Всего страниц: 150 |
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Стр. 29
... connected with the body by the scapular and pelvic arches , and are variously modified in the different orders . Professor Haughton states that the best example of the Scapular arch exists in the bird , where the humerus works in a ...
... connected with the body by the scapular and pelvic arches , and are variously modified in the different orders . Professor Haughton states that the best example of the Scapular arch exists in the bird , where the humerus works in a ...
Стр. 49
... connecting link between Mammals and birds , pos- sessing some of the peculiar characteristics of each class . They possess a coracoid bone , which passes from the scapula to the sternum ; the sternum is keeled like that of birds . A ...
... connecting link between Mammals and birds , pos- sessing some of the peculiar characteristics of each class . They possess a coracoid bone , which passes from the scapula to the sternum ; the sternum is keeled like that of birds . A ...
Стр. 51
... connected by a joint ; the dorsal portion is attached to the vertebræ by a double articulation , and , in most birds , gives off a process which passes over the succeeding rib ; the sternal portion is connected to the sternum by means ...
... connected by a joint ; the dorsal portion is attached to the vertebræ by a double articulation , and , in most birds , gives off a process which passes over the succeeding rib ; the sternal portion is connected to the sternum by means ...
Стр. 58
... connected to each other by means of minute fila- ments named " barbules . " At the point where the shaft joins the quill , there is a small feather called the " plumule . " Some of the barbs in the lower part of the feather are not ...
... connected to each other by means of minute fila- ments named " barbules . " At the point where the shaft joins the quill , there is a small feather called the " plumule . " Some of the barbs in the lower part of the feather are not ...
Стр. 69
... connected together by cartilage . The anterior portion of the sternum is osseous , but posteriorly it becomes cartilaginous , and is prolonged as far as the pubis , on each side giving attachment to eight abdominal ribs , supposed to be ...
... connected together by cartilage . The anterior portion of the sternum is osseous , but posteriorly it becomes cartilaginous , and is prolonged as far as the pubis , on each side giving attachment to eight abdominal ribs , supposed to be ...
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abdominal absent alimentary canal Amphibia animals aperture aquatic auricle Bimana birds bladder blood body bones bony branchiæ branchial calcareous called canines Carnivora caudal cavity cells cervical vertebræ Cetacea characters clavicle claws cloaca composed comprise contains coracoid covered dental formula Describe Digitigrade distinct divided dorsal vertebræ eldos external extremely feathers feet fins fishes five toes fore front furnished gills gland hind limbs homologous horny humerus incisors integument intestine larvæ legs lower jaw lumbar lungs Mammalia Mammals Marsupialia membrane molars mollusca Monotremata mouth muscles muscular nervous system nostrils order of Mammals organs pair peculiar pelvic arch pharynx placed Plantigrade plates possess posterior present Professor Owen Quadrumana reptiles Reptilia respiration ribs rudimentary Ruminants sacs scapula scapular arch shell single Sirenia situated skin skull soft spine sternum stomach sub-kingdom sub-order tail teeth termed terminates tooth transverse processes tubes Ungulata upper jaw ventricle vertebral column Vertebrata whales wing
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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.