Journal . cock be turned to its original position m is shut off, andthe liquid runs out through ;/. To stop the How the cockis turned through 45°, and thus the liquid can be run offas required. If the cylinder/// be graduated the volumeof liquid run off can be readily measured by first drawingthe liquid into »/. 18S7. Improvements in Apparatus far Standardising andMeasurin i f C n Transparent I J. \V. Lovibond, Salisbury. Kng. Pat. 12,867, Oct. 9, lSSo\ s,l. The principle of this instrument is based on the opticalcomparison of any liquid with a unit or combination ofany Dumber of units of colo
Journal . cock be turned to its original position m is shut off, andthe liquid runs out through ;/. To stop the How the cockis turned through 45°, and thus the liquid can be run offas required. If the cylinder/// be graduated the volumeof liquid run off can be readily measured by first drawingthe liquid into »/. 18S7. Improvements in Apparatus far Standardising andMeasurin i f C n Transparent I J. \V. Lovibond, Salisbury. Kng. Pat. 12,867, Oct. 9, lSSo\ s,l. The principle of this instrument is based on the opticalcomparison of any liquid with a unit or combination ofany Dumber of units of colours of known or establishedvalne l>otli viewed under the same conditions by trans-mitted light 0 and c are two slightly divergent tubes,botli viewed through a common eyepiece d by means of. light transmitted through the ground, opal or darkenedglass screen bl. The liquid under examination is putinto the rectangular clear glass vessel g of knownthickness in direction glg*. One or more colour unitsof tinted glass k of known depths of shade are put intogrooves in the other tube, until the transmitted light onboth sides of the field are perfectly even. An exactmeasure of depth of colour in terms of the colour unitscan thus be obtained.—C. C. II. ? In Imp im Tester. P. V. P, Berg, Askor, and O. Sorensen, Kolding, Denmark. Kng. lat. 4480,March 26, 1887. 0] ISSBS, containing the milk under examination,are placed in holders, so suspended from the circum-ference of a rotating disc that soon as a high speed ofrotation has been attained, the holders with the tubesbecome horizontal ; and thus, by centrifugal action, thecream is rapidly separated from the milk, and theirrespective volumes are measurable. In the apparatusdescribed, as many as 162 samples may be tested a
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
