Evolution and the Origin of LifeMacmillan, 1874 - Всего страниц: 186 |
Результаты поиска по книге
Результаты 1 – 5 из 17
Стр. 64
... clearly seized by the reader ; so that for this reason , and because all past discussions on the question of the Origin of Life have shown that this is the part of the subject whose scientific basis is least understood or most ...
... clearly seized by the reader ; so that for this reason , and because all past discussions on the question of the Origin of Life have shown that this is the part of the subject whose scientific basis is least understood or most ...
Стр. 81
... clearly shown that this supposition of aërial con- * A few pages further on this view is thus shortly expressed : - - " Il est évident que touts les tentatives faites avec le feu , peuvent bien servir à prouver que les animaux ...
... clearly shown that this supposition of aërial con- * A few pages further on this view is thus shortly expressed : - - " Il est évident que touts les tentatives faites avec le feu , peuvent bien servir à prouver que les animaux ...
Стр. 85
... clear saline solution . * These mixtures con- taining an abundance of living organisms were then heated to various temperatures , ranging from 122 ° F. ( 50 ° C. ) to 167 ° F. ( 75 ° C. ) ; and it was invariably found that those which ...
... clear saline solution . * These mixtures con- taining an abundance of living organisms were then heated to various temperatures , ranging from 122 ° F. ( 50 ° C. ) to 167 ° F. ( 75 ° C. ) ; and it was invariably found that those which ...
Стр. 90
... clear filtered infusion . † The beaker was then placed upon a sand - bath , and its contained fluid ( in which a thermomefor was immersed ) gradually raised to the required temperature . The fluid was maintained at the same temperature ...
... clear filtered infusion . † The beaker was then placed upon a sand - bath , and its contained fluid ( in which a thermomefor was immersed ) gradually raised to the required temperature . The fluid was maintained at the same temperature ...
Стр. 92
... clear . All clear . All clear . ACID TURNIP - INFUSION . Number Temp . to which exposed . of Experiments made . Date of Turbidity , if..any . 122 ° F. ... 131 ° F. Results at Expiration of the 8th day . 7 ( 5 in 24 hours . ) 12 in 48 ...
... clear . All clear . All clear . ACID TURNIP - INFUSION . Number Temp . to which exposed . of Experiments made . Date of Turbidity , if..any . 122 ° F. ... 131 ° F. Results at Expiration of the 8th day . 7 ( 5 in 24 hours . ) 12 in 48 ...
Другие издания - Просмотреть все
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
Популярные отрывки
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...