. Poisons; their effects and detection; . can be moved by a screw, so that the apexmay be brought exactly in the centre of any line or band, and itsposition read on an outside scale. The first thing to be done Avithsuch an instrument is to determine the position on the scale of the chiefFraunhofer lines or of the more characteristic lines of the alkaliesand alkaline earths,! the Avave lengths of AAhich are accurately , noAV, the scale divisions are set out as abscissae, and the waA^e lengthsin millionths of a millimetre are made the ordinates of a diagram, and * Uehcr Verifcndharkeit
. Poisons; their effects and detection; . can be moved by a screw, so that the apexmay be brought exactly in the centre of any line or band, and itsposition read on an outside scale. The first thing to be done Avithsuch an instrument is to determine the position on the scale of the chiefFraunhofer lines or of the more characteristic lines of the alkaliesand alkaline earths,! the Avave lengths of AAhich are accurately , noAV, the scale divisions are set out as abscissae, and the waA^e lengthsin millionths of a millimetre are made the ordinates of a diagram, and * Uehcr Verifcndharkeit der Spectroscopic zur Untcrscheidimg dcr Farhcnreactmiender Gifte hn Inter esse der forcnsischcn Clicraic, Dorpat, 1890. t The alkalies and earths used for this purpose, with their waA-e lengths, are asfollows : KCl, a line in the red \ 770, in the A-iolet A 404. Lithium chloride, redline, 6705 ; sodium chloride, yellow, 589 ; strontium chloride, line in the blue, is also useful to measure the reen line of thallium chloride = CURVES INDICATIXG THE TOSITIOX OF ABSORPTION BAXDSOX TREATING CERTAIN ALKALOIDS WITH REAGENTS. F bB L CB A
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpoisons, bookyear1895
