Principles of Geology Or the Modern Changes of the Earth And Its Inhabitants
Principles of Geology Or the Modern Changes of the Earth And Its Inhabitants
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These were carried up in a spiral line, and were seen flying in the air, together with boughs and innumerable leaves, which, from their height, appeared reduced to the apparent size of flies. As this cause operates at different intervals of time throughout a great portion of the earth's surface, it may be the means of bearing not only plants but insects, land testacea and their eggs, with many other spe- cies of animals, to points which they could never otherwise have reached, and from which th...ey may then begin to propagate themselves again as from a new centre.
Distribution of cry ptogamous plants. It has been found that a great numerical proportion of the exceptions to the limitation of species to certain quarters of the globe occur in the various tribes of cryptogamic plants. Linnaeus observed that, as the germs of plants of this class, such as mosses, fungi, and lichens, consist of an impalpable powder, the par- ticles of which are scarcely visible to the naked eye, there is no difficulty to account for their being dispersed throughout the atmosphere, and car- ried to every point of the globe, where there is a station fitted for them.
What to read after Principles of Geology Or the Modern Changes of the Earth And Its Inhabitants?
You can find similar books in the "Read Also" column, or choose other free books by Charles Lyell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
These were carried up in a spiral line, and were seen flying in the air, together with boughs and innumerable leaves, which, from their height, appeared reduced to the apparent size of flies. As this cause operates at different intervals of time throughout a great portion of the earth's surface, it may be the means of bearing not only plants but insects, land testacea and their eggs, with many other spe- cies of animals, to points which they could never otherwise have reached, and from which th...ey may then begin to propagate themselves again as from a new centre.
Distribution of cry ptogamous plants. It has been found that a great numerical proportion of the exceptions to the limitation of species to certain quarters of the globe occur in the various tribes of cryptogamic plants. Linnaeus observed that, as the germs of plants of this class, such as mosses, fungi, and lichens, consist of an impalpable powder, the par- ticles of which are scarcely visible to the naked eye, there is no difficulty to account for their being dispersed throughout the atmosphere, and car- ried to every point of the globe, where there is a station fitted for them.
What to read after Principles of Geology Or the Modern Changes of the Earth And Its Inhabitants?
You can find similar books in the "Read Also" column, or choose other free books by Charles Lyell to read onlineMoreLess
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