. Journal. tion of some substance such as silicate of sodaor glass, that will take up the impurities and form a slagthat ran lie separated, as above described, from the tung-state. The tungstate thus obtained is available for use,or it may be dissolved in water and crystallised, ortreated for the production of oxide of tungsten andmetallic tungsten. —F. L. T. Improved Baking Powder. Andrew MDonald, Lang-side, Renfrewshire, ling. Fat. 300, January 2, of potash orbisulphate of soda is substitutedfor the tartaric acid or cream of tartar generally used intin- composition of baking
. Journal. tion of some substance such as silicate of sodaor glass, that will take up the impurities and form a slagthat ran lie separated, as above described, from the tung-state. The tungstate thus obtained is available for use,or it may be dissolved in water and crystallised, ortreated for the production of oxide of tungsten andmetallic tungsten. —F. L. T. Improved Baking Powder. Andrew MDonald, Lang-side, Renfrewshire, ling. Fat. 300, January 2, of potash orbisulphate of soda is substitutedfor the tartaric acid or cream of tartar generally used intin- composition of baking powders. As an example theinventor gives the following mixture:—Rice flour, farina,or other flour, 1 to-Joz. ; bicarbonate of potash or soda,loz. ; bisulphate of potash or soda, 1 to ljoz.— Improved Furnace fur Recovering Soda-Ash. G. Pat. 130S, January 12, 1SS4. Tuts process is to recover soda-ash from esparto or otherliquor. Eig. 1 is a sectional elevation, Eig. 2 a sectional. described, and the production of the acid crystals; (I!) a I plan, and Eig. 3 a cross section on tin- line All of Eig. composed ol four parts of lactic andone [art of A is the fire place situated at or near tie- middle of theoxalic acid.—(. l. 11. | furnace; on each side of the fire-place are one or more ] THE JOUENAL OF THE SOCIETY OF CHEMICAL INDUSTRY. 117 calcining or burning-off chambers BB. C is the Hue fromtlir Left-hand chambers, l> the flue from the gases from the fine C may pass under the furnace soas in enter the flue I >, as indicated by the arrows ; or thegases from the two Hue- may be carried away is the door between the chamber or chambers at theright-hand side of the furnace and the Hue 1); the cor- ^- solution, oxidised by the addition of nitre or the blowingin of air, etc., and thru dried and fused. The iron, asalso a large proportion of the silica and alumina, sinksto ilir bottom of the fusing vesse
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
