See also:born at
See also:Versailles on the 29th of
See also:February 1814 . Entering Gay-Lussac's laboratory in 1831, he became preparateur at the Ecole Polytechnique in 1834 and at the
See also:College de France in 1837 . His next
See also:post was that of repetileur at the Ecole Polytechnique, where in 1846 he was appointed
See also:professor, and in 185o he succeeded Gay-Lussac in the
See also:chair of chemistry at the Museum d'Histoire Naturelle, of which he was director, in succession to M . E .
See also:Chevreul, from 1879 to 1891 . He died at
See also:Paris on the 3rd of February 1894 . His
See also:work included investigations of osmic acid, of the ferrates, stannates, plumbates, &c., and of
See also:ozone, attempts to obtain
See also:free fluorine by the electrolysis of fused fluorides, and the
See also:discovery of anhydrous hydrofluoric acid and of a series of acides sulphazotes, the precise nature of which long remained a
See also:matter of discussion . He also studied the colouring matters of leaves and
See also:flowers, the composition of
See also:bone, cerebral matter and other animal substances, and the processes of
See also:fermentation, in regard to the nature of which he was an opponent of
See also:Pasteur's views . Keenly alive to the importance of the technical applications of chemistry, he devoted
See also:attention as a teacher to the training of
See also:industrial chemists . In this
See also:field he contributed to our knowledge of the manufacture of iron and
See also:steel, sulphuric acid,
See also:glass and paper, and in particular worked at the saponification of fats with sulphuric acid and the utilization of palmitic acid for candle-making . In the later years of his
See also:life he applied himself to the problem of obtaining alumina in the crystalline
See also:form, and succeeded in making rubies identical with the natural
See also:gem not merely in chemical composition but also in
See also:physical properties .
JOHN CHARLES FREMONT (1813-1890)
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