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Nageli, on the influence of natural selection on plants; on the gradation of species of plants. Nails, coloured yellow or purple in part of Africa. Narwhal, tusks of the. Nasal cavities, large size of, in American aborigines. Nascent organs.
Thus we come to the last, or, if you prefer, the first, question in connection with evolution the question of the origin of the Monera. This is the real question of the origin of life, or of spontaneous generation. The famous botanist Nageli afterwards developed the same ideas.
Between the two kinds of starch, the granular and that contained in paste, there is no chemical but only a physical difference, depending on the condition of aggregation of their micellæ. W. Nageli maintains that granulose, or soluble starch, differs from amylodextrin in the former being precipitated by tannic acid and acetate of lead, while the latter is not.
The Jakobi, she said, had not only sent down for the cow's crown and ornaments to go on Tuesday, but word as well that beautiful Nageli, the queen cow, knocking her head against a rock, had broken one horn off. "There's a pretty go!" she continued. "I wish it would bud again. How she will take on! I know her ways: she is greedy of praise.
And evidently they come in the genera named, but at present there is in the authorities at my command so much confusion as to the genera, as given by the most eminent authorities, like Nageli, Kutzing, Braun Rabenht, Cohn, etc., that I think it would be quite unwise for me to settle here, or try to settle here, questions that baffle the naturalists who are entirely devoted to this specialty.
These are represented by the names of workers belonging to a generation which has for the most part already passed away: Darwin’s collaborateurs, such as Alfred Russel Wallace, who independently and simultaneously expounded the theory of natural selection, Haeckel and Fritz Müller, Nägeli and Askenasy, von Kölliker, Mivart, Romanes and others.
This was shown by the above cited experiments of Nageli with the hawkweeds, and may easily be controlled in other cases. The ground-honeysuckle or Lotus corniculatus grows in Holland partly on the dry and sandy soil of the dunes, and occasionally in meadows.
This agency is evidently without any effect, for as we have seen when dealing with the experiments of Nageli, Bonnier and others, each single individual may change its habits and its aspect in response to transplantation. The climate has an exceedingly great influence on each individual, but the continuance of this influence is without permanent result.
But gradually the researches of such accurate observers as Unger, Nageli, Kolliker, Reichart, and Remak tended to confirm the opinion of Von Mohl that cells spring only from cells, and finally Rudolf Virchow brought the matter to demonstration about 1860. His Omnis cellula e cellula became from that time one of the accepted data of physiology.
My reading is, at present, confined to Calderon, who will at last induce me to learn a little Spanish. Heaven forbid that in that case I should remind you of H. Nageli. The necessary cache-nez I possess. My wife has given me one, together with a splendid carpet with swans on it, a la Lohengrin. I heard recently of your Dresden life with Gutzkow, Auerbach, etc., etc. Oh, you tremendous fellow!
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