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Updated: May 25, 2025
The surplus of this having gone, as M. Brogniart suggests, to form the vegetation, whose ruins became coal, and the air being thus brought to its present state, land animals immediately appeared. So also, sea-plants were at first the only specimens of vegetation, because there appears to have been no place where other plants could be produced or supported.
Many contemporary zoophytes are found again in the most ancient layers. To sum up, actual modifications explain former convulsions. The same causes are always in operation; Nature does not proceed by leaps; and the periods, Brogniart asserts, are, after all, only abstractions."
In some parts of North America, extensive though thin beds of them have been found. A distinguished French geologist, M. Brogniart, has shewn that all existing marine plants are classifiable with regard to the zones of climate; some being fitted for the torrid zone, some for the temperate, some for the frigid.
It is the opinion of M. Brogniart, that the uniformity which existed in the primeval times can only be attributed to the temperature arising from the internal heat, which had yet, as he supposes, been sufficiently great to overpower the ordinary meteorological influences, and spread a tropical clime all over the globe.
Two exquisitely charming terra-cotta busts in glass cases of the children, Louise and Alexandre Brogniart, and 1034, 1035, the original busts in plaster of Mme. Houdon and Sabine Houdon, will also be noted. Like Caffieri, Houdon was an habitué of the Français, and in his old age would totter to the theatre supported by his servant, to calmly sleep the performance out.
This is conceived by M. Brogniart, with great plausibility, to have been the result of a uniformity of climate, produced by the as yet unexhausted effect of the internal heat of the earth upon its surface; whereas climate has since depended chiefly on external sources of heat, as modified by the various meteorological influences.
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