Mémoire sur les os anciens et fossiles et sur d'autres résidus solides de la putréfaction / par M. J. Girardin,. et M. F. Preisser.

Girardin, Jean & Preisser, Frédéric Joseph

Publication Date: 1843

About this Item

Rouen : Impr. de Nicétas Periaux, 1843, 8°, 45 pp., Rückenbroschur. First Edition! "The discovery of the existence of fluorine in animal bones was made by Morichini in the early years of the nineteenth century, and was soon thereafter confirmed by the leading chemists, although there were considerable discussions and some disputes in regard to its presence. Berzelius in his Traité de chimie, Vol. VII, page 473, 1833, reports having certainly found it in animal bones, but says it was less than two per cent. About the same time, Gay Lussac, in his lectures before the Faculty of Science, says that the fluoride of calcium exists in the proportion of about one one-hundredth in the composition of bone and the enamel of teeth. On the contrary, in 1843, Girardin and Priesser, in their Mémoire sur les os anciens et fossiles, in the Annales de physique et de chimie, 1843, Vol. III, page 370, declare that they have not been able to find the least trace of fluoride of calcium in ancient human bones, and that the existence of this salt in recent animal bones is more than doubtful. But this difference was all put to rest and beyond doubt by the investigations of Mons. Fremy in his Recherches chimiques sur les os, Annales de physique et de chimie, 1855, Vol. I, page 47. But it was, as theymsay, in a quantity so small that the most delicate mechanism and operation were required to find it, and emphasizing this on page 70, he declines to give any analytic method by which he can determine the exact quantity of this salt in the bones tested. The results of analyses of Von Bibra were to the same effect. Heintz believes that he had found in the ash of the human femur from three to five per cent of the fluoride of calcium ; while Zaleski made it less than one per cent." Thomas Wilson: On the Presence of Fluorine as a Test for the Fossilization of Animal Bones. The American Naturalist, 29 (1895), No. 340: pp.301-317 Girardin, Jean (1803-1884). Auteur Preisser, Frédéric Joseph (1815-1864). Auteur. Seller Inventory # 66822

Bibliographic Details

Title: Mémoire sur les os anciens et fossiles et ...

Publication Date: 1843

Edition: 1st Edition