Physiology: preliminary course lecturesC.R. Murry, 1879 - Всего страниц: 288 |
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Стр. xi
... Absolute Power of Muscle - The Power of Muscle in General - Differences of the Sexes - Differences in Different Animals - The Velocity and Delicacy of Muscular Action ..... 195-222 xii CONTENTS . LECTURE XI . NERVE AND ITS PROPERTIES.
... Absolute Power of Muscle - The Power of Muscle in General - Differences of the Sexes - Differences in Different Animals - The Velocity and Delicacy of Muscular Action ..... 195-222 xii CONTENTS . LECTURE XI . NERVE AND ITS PROPERTIES.
Стр. 39
... animal life is directly or indirectly dependent upon the life of plants . Either the animal feeds upon vegeta- bles exclusively , as in the case of the herbivon , or it feeds upon the flesh of these animals and thus indirectly upon the ...
... animal life is directly or indirectly dependent upon the life of plants . Either the animal feeds upon vegeta- bles exclusively , as in the case of the herbivon , or it feeds upon the flesh of these animals and thus indirectly upon the ...
Стр. 40
... animals , vegetables are burnt up just as coal is burnt up in the furnace of the engine and thus is liberated the force in either case . So much fuel , so much force , in the case of the engine ; so much food , so much force , in the ...
... animals , vegetables are burnt up just as coal is burnt up in the furnace of the engine and thus is liberated the force in either case . So much fuel , so much force , in the case of the engine ; so much food , so much force , in the ...
Стр. 42
... animal cell absorbs ( ingests ) the deoxidised compounds and the oxygen with which it burns ( oxidises ) them , and ... animals feed the earth and air . This is the great circle of nutrition in nature . The carbon of the carbonic acid ...
... animal cell absorbs ( ingests ) the deoxidised compounds and the oxygen with which it burns ( oxidises ) them , and ... animals feed the earth and air . This is the great circle of nutrition in nature . The carbon of the carbonic acid ...
Стр. 43
... animal cells , this gas must be as perpetually furnished by the plants . Thus , that the 700-1000 grammes of oxygen , appropriated by each human being in a day , to say nothing of other animals , may be restored to the air , the plant ...
... animal cells , this gas must be as perpetually furnished by the plants . Thus , that the 700-1000 grammes of oxygen , appropriated by each human being in a day , to say nothing of other animals , may be restored to the air , the plant ...
Часто встречающиеся слова и выражения
acid gas action afferent nerve albumen albumenoid become birds blood corpuscles body bone brain canals carbonic acid carbonic acid gas cartilage cavity chemical cilia coal coccyx color combustion comparative anatomy compounds contraction cord Darwin discovery disease earth effect elasticity electricity elements entirely excretions exhibits existence fact fibrin fluid fœtus frog fuel Goethe hæmoglobin Haller Haversian canals heat human individual inorganic insects irritation Lamarck layers living manifest masses of protoplasm mechanical medicine ment microscope motion movements muscle fibre muscular force muscular sense myosin natural selection nerve cells nerve fibres nerve force nervous system nucleolus nucleus observed original ovum oxidation oxidised oxygen periosteum phenomena physical physician physiology plants properties protoplasm quantity reproduction salts sarcolemma sensitive nerve simply species spermatozoid spinal structure substance surface theory tion tissue tubes various vertebrate vessels wall whole yolk zona pellucida
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Стр. 8 - Himself best knows : but strangely-visited people, All swoln and ulcerous, pitiful to the eye, The mere despair of surgery, he cures ; Hanging a golden stamp about their necks, Put on with holy prayers : and 'tis spoken, To the succeeding royalty he leaves The healing benediction.
Стр. 62 - I look at the natural geological record, as a history of the world imperfectly kept, and written in a changing dialect ; of this history we possess the last volume alone, relating only to two or three countries. Of this volume, only here and there a short chapter has been preserved ; and of each page, only here and there a few lines.
Стр. 103 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Стр. 180 - He who rejects with scorn the belief that the shape of his own canines, and their occasional great development in other men, are due to our early progenitors having been provided with these formidable weapons, will probably reveal by sneering the line of his descent. For, though he no longer intends, nor has the power, to use these teeth as weapons, he will unconsciously retract his "snarling muscles
Стр. 62 - ... foot may conclude that the animal which left this impression ruminated, and this conclusion is as certain as any other in physics or morals. This footprint alone, then, yields to him who observes it, the form of the teeth, the form of the jaws, the form of the...
Стр. 133 - See dying vegetables life sustain, See life dissolving vegetate again : All forms that perish other forms supply, (By turns we catch the vital breath, and die) Like bubbles on the sea of matter borne They rise, they break, and to that sea return.
Стр. 103 - Thus from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, — namely, the production of the higher animals, — directly follows.
Стр. 15 - He must occasionally act as butler, and dress hair and wigs. He will be required sometimes to read prayers, and to preach a sermon every Sunday. A good salary will be given.
Стр. 34 - ... cubic miles of such matter to weigh a single grain. The general attractive force of all matter must, however, impel these masses to approach each other, and to condense, so that the nebulous sphere became incessantly smaller, by which, according to mechanical laws, a motion of rotation originally slow, and the existence of which must be assumed, would gradually become quicker and quicker.
Стр. 90 - But for some years I could not conceive how each form became so excellently adapted to its habits of life. I then began systematically to study domestic productions, and, after a time, saw clearly that man's selective power was the most important agent. I was prepared, from having studied the habits of animals, to appreciate the struggle for existence, and my work in geology gave me some idea of the lapse of past time. Therefore when I happened to read " Malthus on Population," the idea of natural...