Charles Darwin, His Life and WorkPutnam, 1891 - Всего страниц: 295 |
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Стр. 74
... successive tertiary strata , as remarked by several able observers ; it has often been found that a shell very common in a tertiary stratum is now most rare , and has even long been thought to be extinct . If , then , as appears ...
... successive tertiary strata , as remarked by several able observers ; it has often been found that a shell very common in a tertiary stratum is now most rare , and has even long been thought to be extinct . If , then , as appears ...
Стр. 112
... successive generations it becomes hereditary . With domesticated animals we are accustomed to see new mental habits or instincts acquired and rendered hereditary , but with animals in a state of nature it must always be most difficult ...
... successive generations it becomes hereditary . With domesticated animals we are accustomed to see new mental habits or instincts acquired and rendered hereditary , but with animals in a state of nature it must always be most difficult ...
Стр. 168
... successively from an egg , and that there had been repeated destructions of the world . The doctrine of Thales was that every thing was originally in a fluid state , and had “ pro- gressed " to more substantial forms . Anaxagoras ...
... successively from an egg , and that there had been repeated destructions of the world . The doctrine of Thales was that every thing was originally in a fluid state , and had “ pro- gressed " to more substantial forms . Anaxagoras ...
Стр. 190
Charles Frederick Holder. these successive genera are the following : Ist , in- crease in size , from Orohippus , as large as a fox , to the modern horse ; 2d , increase in speed through concentration of the limb - bones ; 3d ...
Charles Frederick Holder. these successive genera are the following : Ist , in- crease in size , from Orohippus , as large as a fox , to the modern horse ; 2d , increase in speed through concentration of the limb - bones ; 3d ...
Стр. 191
Charles Frederick Holder. Connecting Links . 191 These changes were produced only after successive ages representing vast eras of time . From this brief review it will be seen that Darwin- ism assumes that the side splints so familiar in ...
Charles Frederick Holder. Connecting Links . 191 These changes were produced only after successive ages representing vast eras of time . From this brief review it will be seen that Darwin- ism assumes that the side splints so familiar in ...
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Стр. 182 - ... been stated that I attribute the modification of species exclusively to natural selection, I may be permitted to remark that in the first edition of this work, and subsequently, I placed in a most conspicuous position — namely, at the close of the Introduction the following words : "I am convinced that natural selection has been the main but not the exclusive means of modification.
Стр. 106 - Considering the small size of these islands, we feel the more astonished at the number of their aboriginal beings, and at their confined range. Seeing every height crowned with its crater, and the boundaries of most of the lava-streams still distinct, we are led to believe that within a period, geologically recent, the unbroken ocean was here spread out. Hence, both in space and time, we seem to be brought somewhat near to that great fact — that mystery of mysteries — the first appearance of...
Стр. 160 - ... would it be too bold to imagine that in the great length of time, since the earth began to exist, perhaps millions of ages before the commencement of the history of mankind, would it be too bold to imagine that all warm-blooded animals have arisen from one living filament...
Стр. 2 - I had many friends, and got together a good collection of old verses, which by patching together, sometimes aided by other boys, I could work into any subject. Much attention was paid to learning by heart the lessons of the previous day; this I could effect with great facility, learning forty or fifty lines of Virgil or Homer, whilst I was in morning chapel; but this exercise was utterly useless, for every verse was forgotten in forty-eight hours. I was not idle, and with the exception of versification,...
Стр. 115 - I think this is as curious a case of instinct as ever I heard of, and likewise of adaptation in structure between two objects apparently so remote from each other in the scheme of nature, as a crab and a cocoa-nut tree.
Стр. 4 - ... I often became quite absorbed, and once, whilst returning to school on the summit of the old fortifications round Shrewsbury, which had been converted into a public foot-path with no parapet on one side, I walked off and fell to the ground, but the height was only seven or eight feet. Nevertheless the number of thoughts which passed through my mind during this very short, but sudden and wholly unexpected fall, was astonishing, and seem hardly compatible with what physiologists have, I believe,...
Стр. 109 - I have not as yet noticed by far the most remarkable feature in the natural history of this archipelago; it is, that the different islands to a considerable extent are inhabited by a different set of beings. My attention was first called to this fact by the Vice-Governor, Mr. Lawson, declaring that the tortoises differed from the different islands, and that he could with certainty tell from which island any one was brought.
Стр. 24 - Delight itself, however, is a weak term to express the feelings of a naturalist who, for the first time, has wandered by himself in a Brazilian forest.
Стр. 70 - While sailing a little south of the Plata on one very dark night, the sea presented a wonderful and most beautiful spectacle. There was a fresh breeze, and every part of the surface, which during the day is seen as foam, now glowed with a pale light. The vessel drove before her bows two billows of liquid phosphorus, and in her wake she was followed by a milky train.