Evolution and the Origin of LifeMacmillan, 1874 - Всего страниц: 186 |
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Стр. 17
... solution of nitrate of silver , and simultaneously in a first increment of time a number of molecules of oxygen and of silver begin to aggregate independently into crystals of oxide of silver ; in a second increment of time the ...
... solution of nitrate of silver , and simultaneously in a first increment of time a number of molecules of oxygen and of silver begin to aggregate independently into crystals of oxide of silver ; in a second increment of time the ...
Стр. 19
... solution , or ' Pasteur's solution , ' that the addition of a few of these organisms ( all other conditions remaining the same ) to either one of the solutions will soon occasion a very considerable growth of the living matter of which ...
... solution , or ' Pasteur's solution , ' that the addition of a few of these organisms ( all other conditions remaining the same ) to either one of the solutions will soon occasion a very considerable growth of the living matter of which ...
Стр. 24
... solution . would seem to afford a much more easy starting - point for life - evolution than could have existed in ... solutions at the present day , have not yet professed to show that it can occur in saline solutions free from all ...
... solution . would seem to afford a much more easy starting - point for life - evolution than could have existed in ... solutions at the present day , have not yet professed to show that it can occur in saline solutions free from all ...
Стр. 37
... solution . The different varieties of living matter ( from the point of view of its molecular composi tion ) are probably innumerable , and each minute difference in molecular constitution , at whatever period it may have been induced ...
... solution . The different varieties of living matter ( from the point of view of its molecular composi tion ) are probably innumerable , and each minute difference in molecular constitution , at whatever period it may have been induced ...
Стр. 66
... solution thought to contain it , by having regard only to its accustomed or known properties . The man of science necessarily starts from and assumes the truth of the ' uniformity ' of natural phenomena at every step - to do otherwise ...
... solution thought to contain it , by having regard only to its accustomed or known properties . The man of science necessarily starts from and assumes the truth of the ' uniformity ' of natural phenomena at every step - to do otherwise ...
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Часто встречающиеся слова и выражения
8th day Allotropism amongst animal appear Archebiosis and Heterogenesis Bacteria and Vibriones believe boiling water concerning conclusion crystalline matter dead organic death-point degree of heat Desmids destructive influence doctrine eggs evidence Evolution Evolution Philosophy Evolutionist ex vivo existence exposed fact favour ferments flasks forms germs of Bacteria growth hay-infusions heated to 140 Homogenesis hypothesis influence of heat infusion of hay Infusoria inoculating compound kind less living ferments living matter living organisms living things living units lowest organisms Max Schultze minutes mode of origin moist molecular multiplication not-living observation occur occurrence of Archebiosis organic infusions organic matter Owens College particles Pasteur phenomena pre-existing present occurrence previously boiled Professor Huxley protoplasm proved putrefaction question reason resisting heat Rotifers saline solutions scientific seeds similar Spallanzani spontaneous supposed germs supposition temperature of 140 tion Torula turbid turnip Turnip-infusions vivum ex vivo whilst
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Стр. 32 - As all the living forms of life are the lineal descendants of those which lived long before the Cambrian epoch, we may feel certain that the ordinary succession by generation has never once been broken, and that no cataclysm has desolated the whole world.
Стр. 12 - 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.
Стр. 138 - A few naturalists, endowed with much flexibility of mind, and who have already begun to doubt the immutability of species, may be influenced by this volume; but I look with confidence to the future, to young and rising naturalists, who will be able to view both sides of the question with impartiality.
Стр. 55 - But though we have always a propensity to generalize from unvarying experience, we are not always warranted in doing so. Before we can be at liberty to conclude that something is universally true because we have never known an instance to the contrary, we must have reason to believe that if there were in nature any instances to the contrary, we should have known of them.
Стр. 25 - ... chemical and physical qualities of the surrounding medium. But if, in the present state of science, the alternative is offered us, either germs can stand a greater heat than has been supposed, or the molecules of dead matter, for no valid or intelligible reason that is assigned, are able to rearrange themselves into living bodies, exactly such as can be demonstrated to be frequently produced in another way, I cannot understand how choice can be, even for a moment, doubtful.
Стр. 31 - Carbon, hydrogen, oxygen, and nitrogen are all lifeless bodies. Of these, carbon and oxygen unite in certain proportions and under certain conditions, to give rise to carbonic acid ; hydrogen and oxygen produce water ; nitrogen and hydrogen give rise to ammonia. These new compounds, like the elementary bodies of which they are composed, are lifeless. But when they are brought together, under certain conditions they give rise to the still more complex body, protoplasm, and this protoplasm exhibits...