Journal . nd the flamegenerated passes into the interior of the furnace at E. THE JOURNAL OF THE SOCIETY OF CHEMICAL INDUSTRY. A portion of the tlarue passes over the hearth A, and theremainder emerges therefrom through the passages I>,circulates round the evaporating pan C and back to thebody of the furnace through 1> : the consumed gasesleave the furnace at MM. If a stronger heat is requiredin the pan (, bricks covering a number of openings b l>are removed, admitting a larger portion of the rlameunderneath the pan C. The dried material removed With mixtures containing
Journal . nd the flamegenerated passes into the interior of the furnace at E. THE JOURNAL OF THE SOCIETY OF CHEMICAL INDUSTRY. A portion of the tlarue passes over the hearth A, and theremainder emerges therefrom through the passages I>,circulates round the evaporating pan C and back to thebody of the furnace through 1> : the consumed gasesleave the furnace at MM. If a stronger heat is requiredin the pan (, bricks covering a number of openings b l>are removed, admitting a larger portion of the rlameunderneath the pan C. The dried material removed With mixtures containing 20 per cent, of heavy hydro-carbons the decrease in luminosity after eight to ninehours amounted to 7 3—95 per cent., with those con-taining 20—40 per cent, the decrease was 22—48 percent., and with one made up with .>0 per cent, of No. 3the loss of light was 56*7 per cent. In the last-namedmixtures the wick was more sooty than in the first. Theauthor ascribes the diminished luminosity to the slow. from the pan is fed on to the hearth of the furnacethrough passages K K leading from the upper surface ofthe setting of the pan to the hearth A, from which,after calcination, it is removed through the doors L L. -C. C. H. II.—FUEL, GAS AND Influence ofthi Composition of Petroleum and of Viecontained therein mi its Illuminating Ioim-. E. Alftan. Zap. Imp. Russk. Techn. Obszcz. 18S7, 21, petroleum is now commonly tested in regard toalkalinity or acidity, the inlluence of the ingredients onthe luminosity of the Uame has been neglected. Theauthor has distilled an ordinary commercial sample ofNobels petroleum into three fractions :—()i with sp. 0-7647 and boiling point under 150° ; (2) with sp. 0S2S7 (normal) and boiling point between 150-and 270; and (3) with sp. gr. of 0 sii7 and boilingpoint over 270°. The two latter were then mixedvarious proportions and sutlicient of the light no in distillate was added in eacli case to bring the product
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
