Journal of Botany, British and Foreign, Том 6

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Robert Hardwicke, 1868
 

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Страница 316 - Of Mr. Wallace and his many contributions to philosophical biology it is not easy to speak without enthusiasm; for, putting aside their great merits, he, throughout his writings, with a modesty as rare as I believe it to be unconscious, forgets his own unquestioned claim to the honour of having originated independently of Mr. Darwin, the theories which he so ably defends.
Страница 311 - I felt that my botanical knowledge of these homely plants had been but little deeper than Peter Bell's, to whom ' A primrose by the river's brim A yellow primrose was to him, And it was nothing more.
Страница 187 - For myself, I venture confidently to look back thousands on thousands of generations, and I see an animal striped like a zebra, but perhaps otherwise very differently constructed, the common parent of our domestic horse, whether or not it be descended from one or more wild stocks, of the ass, the hemionus, quagga, and zebra.
Страница 314 - Geramules which do not become developed may, according to his hypothesis, be transmitted through many succeeding generations, thus enabling us to understand many remarkable cases of reversion or atavism. Thus, according to this hypothesis, not only have the normal organs of the body the representative elements of which they consist diffused through all the other parts of the body, but the morbid states of these, as hereditary diseases, malformations, etc., all actually circulate in the body as morbid...
Страница 314 - ... and so on, for countless generations. What is this potentiality, and how is this power to reproduce thus propagated, so that an organism can, by single cells, multiply itself so rapidly, and within very narrow limits, so surely and so interminably ? Mr. Darwin suggests an explanation, by assuming that each cell or fragment of a plant (or animal) contains myriads of atoms or gemmules, each of which gemmules he supposes to have been thrown off from the separate cells of the mother-plant, the gemmules...
Страница 315 - We trust that the time is not distant when it will be universally understood that the battle of the evidences will have to be fought on the field of physical science, and not on that of the metaphysical.
Страница 83 - ... do not seem so popular a study as they were a few years ago), I have thought it proper to bring the more important general results of my investigations before you at this time, and to allow the less interesting subject of the determination of species to lie over to another time. I have to apologise to you for introducing so much of another science, foreign to the objects of the society, into this paper ; but when the lower orders of plants are concerned, we are so near to the boundaries of the...
Страница 77 - Sometimes the transition between the green and blue waters is progressive, passing through the intermediate in the space of three or four leagues ; at others it is so sudden that the line of separation is seen like the rippling of a current...
Страница 17 - The vessel was a common, or, rather, coarse basket, in the shape of a four-cornered, wide-mouthed bottle made of split rattans, several species of which grow in abundance in the above named mountains, and contained about two gallons.
Страница 313 - The functions of these have been hotly disputed, some physiologists affirming that they convey air, others fluids, others gases, and still others assigning to them far-fetched uses, of a wholly different nature. By a series of admirably contrived and conducted experiments, Mr. Spencer has not only shown that these vessels are charged at certain seasons of the year with fluid, but that they are intimately connected •with the formation of wood.

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