On poisons in relation to medical jurisprudence and medicine . ted liquid is dis-tilled in the dark, and if a minute trace of phosphorus be present, i. e.,the 100,000th part, or according to De Yrij, the 2,000,000th, the factwill be made evident by a luminous appearance in the upper part ofthe tube, at each successive condensation of the vapors. The blackspace represents a dark chamber, on the outside of which the flask a,containing the liquid for distillation, is placed; b, a flask acting as a DISTILLATION. 281 receiver for the condensed aqueous vapor; c c, glass condensing-tubekept filled wi
On poisons in relation to medical jurisprudence and medicine . ted liquid is dis-tilled in the dark, and if a minute trace of phosphorus be present, i. e.,the 100,000th part, or according to De Yrij, the 2,000,000th, the factwill be made evident by a luminous appearance in the upper part ofthe tube, at each successive condensation of the vapors. The blackspace represents a dark chamber, on the outside of which the flask a,containing the liquid for distillation, is placed; b, a flask acting as a DISTILLATION. 281 receiver for the condensed aqueous vapor; c c, glass condensing-tubekept filled with cold water entering at d and passing out at e; f is astand; g g represent the small tube through which the phosphorusvapor passes, mixed with aqueous vapor. The luminosity of the phos-phorus vapor is seen at the point at which the aqueous vapor is con-densed, generally between g and d. For the success of this experimentthere must be the most absolute darkness. The bend of the tube ofthe flask a should be provided with a metallic cowl. If ether or Fig. Apparatus for detecting phosphorus by distillation. alcohol should be present, the vapors of these liquids should be dis-tilled over first. In the receiver in which the vapor of the distilledliquid is condensed, phosphorous acid or phosphoric acid may be dis-covered by the usual tests. So delicate is this process of distillationand condensation, that in one experiment with the head of a singlelucifer-match, I observed that the luminosity continued for half an hourin the condensing-tube. The most absolute darkness is required forthe success of this experiment. If the person has survived several days it is not likely that any freephosphorus will remain in the stomach or its contents. None wasfound in the contents of the stomach or in the fatty liver of the girlwho died on the sixth day (page 277), but the distillation process suc-ceeded with the broken top of a pot which had held the phosphoruspaste, although this was empty
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectpoisons, bookyear1875
