Evolution and the Origin of LifeMacmillan, 1874 - Всего страниц: 186 |
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Стр. 7
... developed only by the sacrifice of many previous early beliefs and modes of thought . But it often happens that an old belief will - unknown per- haps to the person himself - leave decided traces of its previous influence , and thus ...
... developed only by the sacrifice of many previous early beliefs and modes of thought . But it often happens that an old belief will - unknown per- haps to the person himself - leave decided traces of its previous influence , and thus ...
Стр. 51
... developed in the fluids , owing to the accidental presence therein of invisible germs thrown off from pre - existing living organisms . " Thus we start with two possibilities which , in the eyes of the Evolutionist at least , have about ...
... developed in the fluids , owing to the accidental presence therein of invisible germs thrown off from pre - existing living organisms . " Thus we start with two possibilities which , in the eyes of the Evolutionist at least , have about ...
Стр. 70
... develop increase in size : owing apparently to the multiplication of effects that may be induced by the production of several series of molecular re - arrangements within the larger aggre- gates . The changes progress , however , in ...
... develop increase in size : owing apparently to the multiplication of effects that may be induced by the production of several series of molecular re - arrangements within the larger aggre- gates . The changes progress , however , in ...
Стр. 73
... develop- ment takes place ; and as this occurs , the causes which originally sufficed to determine their form and structure , and which for a time continue to induce comparatively rapid and marked deviations , become less and less ...
... develop- ment takes place ; and as this occurs , the causes which originally sufficed to determine their form and structure , and which for a time continue to induce comparatively rapid and marked deviations , become less and less ...
Стр. 75
... develop- ment , are the immediate products of ever - acting natural laws or material properties . These properties should act therefore now as they have ever done , and so continue to produce almost similar effects . The lower the forms ...
... develop- ment , are the immediate products of ever - acting natural laws or material properties . These properties should act therefore now as they have ever done , and so continue to produce almost similar effects . The lower the forms ...
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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...