 | Lyons McLeod - 1860 - 366 Seiten
...Africa into the Atlantic; but it has been shown more recently, by Professor Ehrenberg, to consist, in great part, of infusoria with siliceous shields, and of the siliceous tissue of plants. Although many species of infusoria peculiar to Africa are known to Professor Ehrenberg, he has, I believe,... | |
 | 1863 - 788 Seiten
...packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by tho gauze of the vane at the mast-head. Mr. Lyell has also given me four packet« of dust which fell on a vessel a few hundred XATTTRE. mileí northward of these island*. Professor... | |
 | South American missionary society - 1867 - 264 Seiten
...before it gets there. RAIN DUST. Professor Shruberg has analysed this " rain dust," and found that it consists in great part of infusoria with siliceous shields, and of the siliceous tissue of plants. These infusoria are almost, without exception, inhabitants of fresh water. Darwin says, " from the... | |
 | Charles Darwin - 1889 - 628 Seiten
...packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the mast-head. Mr. Lyell has also given...siliceous tissue of plants. In five little packets which * ] must take this opportunity of acknowledging the great kindness with which this illu.strious naturalist... | |
 | Charles Darwin - 1890 - 646 Seiten
...packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the masthead. Mr. Lyell has also given...miles northward of these islands. Professor Ehrenberg l finds that this dust consists in great part of infusoria with siliceous shields, and of the siliceous... | |
 | Charles Darwin - 1890 - 604 Seiten
...packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the masthead. Mr. Lyell has also given...hundred miles northward of these islands. Professor Ehrenberg1 finds that this dust consists in great part of infusoria with siliceous shields, and of... | |
 | Charles Darwin - 1896 - 542 Seiten
...packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the mast-head. Mr. Lyell has also given...vessel a few hundred miles northward of these islands. Professoi Ehrenberg* finds that this dust consists in great part of infusoria with siliceous shields,... | |
 | Charles Darwin - 1908 - 542 Seiten
...packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the mast-head. Mr. Lyell has also given...miles northward of these islands. Professor Ehrenberg 1 finds that this dust consists in great part of infusoria with siliceous shields, and of the siliceous... | |
 | Henry David Thoreau - 1993 - 372 Seiten
...impalpably fine dust which filled the air at sea near the Cape de Verd Islands & he found it to consist in great part of "infusoria with siliceous shields, and of the siliceous tissue of plants"— found in this 67 dif organic forms.— The infusoria with 2 exceptions inhabitants of fresh water.... | |
 | Charles Darwin - 1997 - 500 Seiten
...of dust which fell on a vessel a few hundred miles northward of these islands. Professor Ehrenberg3 finds that this dust consists in great part of infusoria...shields, and of the siliceous tissue of plants. In five litde packets which I sent him, he has ascertained no less than sixty-seven different organic forms!... | |
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... injured the astronomical instruments. The morning before we anchored at Porto Praya, I collected a little packet of this brown-coloured fine dust, which appeared to have been filtered from the wind by the gauze of the vane at the masthead. Mr. Lyell... 
