The Use of the Blowpipe in Chemical Analysis, and in the Examination of Minerals (Classic Reprint) - Couverture rigide
Synopsis
Excerpt from The Use of the Blowpipe in Chemical ysis, and in the Examination of Minerals
Closely connected with his canon; thus we find him expressing the cornposition of magnetic iron ore (traité, p. 145) as that of one atom of oxi-s dule (protoxide) of iron, with M atoms of oxide (peroxide), the former containing two atoms of oxygen, the latter three; and, adopting Latin names and terminations, he calls the protoxide of Iron, omi dam ferrosum, the peroxide oridum ferricmn, and the compound we are speaking of, oxidant ferroso ferricum. This, and similar terms, I have taken the liberty toreject, using instead those commonly adopt ed in this country. The chemical and mineralogical symbols are composed of the initial letter or letters of the Latin names of the various elementary boa dies; for'the former, the common Roman capitals are used, over which are placed as many data as 'there are supposed to be atoms or Oxygen com bined with the electro-positive element; for the mineralogical symbols Italic capitals areem~ ployed, and the dots omitted. In 'the formulae they are connected by the usual algebraic sign of addition. These formulae I have omitted in toto; but that the reader may not lose the information they are intended to convey, -l have subjoined, in notes.
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Présentation de l'éditeur
The name of Berzelius, as a skilful and patient experimenter, stands almost unrivalled; and the present Essay amply vindicates his claim to the high reputation he has acquired. It is an invaluable cp Uection of important and new facts and admirably supplies the want, which has long been felt and acknowledged, of a scientific practical treatise on the blowpipe. Some explanation, however, and to the author sonae apology perhaps is necessary as to certain liberties I have taken with the originaL In the first place, I found the description of apparatus so very mitiute, that though such may be de$irable in Sweden, in Britain I am sure it is not wanted, abounding as this country does in skilful artists, from whom every species of philosophical apparatus may be had, of the best workmanship and construction I have therefore Mr. Newman, of Lisle-street, Leicester-square, makes complete ets of apparatus for the blowpipe, containing every thing that the operator can require. Each article may be had separately, or the whole together, neatly arranged in a small case, with fluxes, c. of the greatest purity, (an object ofprimary consequence,) at the option of the purchaser. Minerals of all kinds, both for collections and experiment, may be had of Mr. Sowerby, King-street, Covent Garden, and of Mr. Mawei near Somerset-house, in theS
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