. Journal. ng indiarubber tubing with the noseof the three-way tap of the nitrometer, which is filledwith mercury (Allen fills his instrument with a saturatedsolution of sodium or magnesium sulphate). The beaker,which should be of strong glass, contains a small glass orebonite tube, provided with a loop of platinum wire(Fig. 1) to facilitate its insertion and withdrawal. Or, New Applications of the Nitrometer. G. Lunge. Client. Ind. 8, author at first criticises Allens paper on thesame subject, read before the Birmingham Sectionof this Society on 4th March, 1S85. Accordingto Allen,
. Journal. ng indiarubber tubing with the noseof the three-way tap of the nitrometer, which is filledwith mercury (Allen fills his instrument with a saturatedsolution of sodium or magnesium sulphate). The beaker,which should be of strong glass, contains a small glass orebonite tube, provided with a loop of platinum wire(Fig. 1) to facilitate its insertion and withdrawal. Or, New Applications of the Nitrometer. G. Lunge. Client. Ind. 8, author at first criticises Allens paper on thesame subject, read before the Birmingham Sectionof this Society on 4th March, 1S85. Accordingto Allen, sulphuric acid has a notable solventpower for nitric oxide, and hence a source of erroris introduced, which must not be ignored, but Lungeproves this statement to be wrong (Ber. 18, 1391).He also points out here that the nitrometer is an excellentcontrivance for determining the solubility of gases incerta;n liquids under variable pressure and new application of the same apparatus is for. better still, the beaker may be replaced by a smallbottle, containing a tube fused to the bottom (Fig. 2).The whole must be light enough to be hung on the nitro-meter-tap. The same apparatus can, of course, take theplace of Knops azotometer, Scheiblers carbonic acidapparatus, or be used for the assay of commercial per-oxide of hvdrogen. In the latter case the sample to betested is filledrinto the inner tube, while permanganatesolution, strongly acidified with sulphuric acid, is placedinto the bottle proper. On mixing, oxygen is readilygiven off, and the quantity of the same is measured in
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
