To extract the metal, the pitchblende is first roasted in order to remove the arsenic and sulphur.
Rend., 1891, 112, p. 866) is obtained by mixing a solution of sodium hyposulphite with double its volume of hydrochloric acid, filtering and extracting with chloroform; the extract yielding the variety on evaporation.
A large fleet is engaged in the fishery; and a great number of factories extract the oil for tanning and currying, and for adulterating other more expensive oils, and manufacture the refuse into a valuable guano.
His first little paper on the subject, "Bemerkungen fiber die Kreifte der unbelebten Natur," appeared in 1842 in Liebig's Annalen, five years after the republication, in the same journal, of an extract from K.
Per second (f/s) is given in the second column of the extract from the abridged ballistic table below.