. Journal . res 27 times as greal asr) of the concentrated acid, and its h\character; finally the following form was adopted:—Aece of thick-walled capillary tubing tvassealedon tob of the U on which the fiducial mark A was etched,the upper portion was blown out into a bul ither limb was drawn out as shown at a number of such i the same ■ of glass, a pair could he selected, the weight ofh did not differ from one another by more than aion of a gram : the lighter wa interpoise. The advantage of this method is that the liquid only is[bed against glass or platinum, and a- the external- are p
. Journal . res 27 times as greal asr) of the concentrated acid, and its h\character; finally the following form was adopted:—Aece of thick-walled capillary tubing tvassealedon tob of the U on which the fiducial mark A was etched,the upper portion was blown out into a bul ither limb was drawn out as shown at a number of such i the same ■ of glass, a pair could he selected, the weight ofh did not differ from one another by more than aion of a gram : the lighter wa interpoise. The advantage of this method is that the liquid only is[bed against glass or platinum, and a- the external- are practically equal, ire independ of the bygromi I state of the to a vacuum according to tl tal phys and the densitii to I by the values given for the density of water at the three temperatun is tables 1228 JOURNAL OF THE SOCIETY OF CHEMICAL INDUSTRY. [Nov. SO, 1903. The temperatures were recorded by a tbermigraduated t>> 0*1 . and standardised against (i) a Kewstandard, and (ii) a standard bj Results.— stated above, th- results were obtained at4°, 14*2°, and 24-2° C, but in the present communicationid temperature nave been corrected to 15°,by the value of k obtained from an equation I>4 = (1 + kt). ami those at the third temperature corrected to25° C. in like manner. The densities have been plotted outin terms of percentages, the former as ordinate*, the latteras abscissa) upon a scale of l mm. tor 0-001 in density and01 in percentages. The results have been smoothed bydrawing mean straight lines with a flat glass ruler, butfor the irregular portion from 93 per cent, to luO per cent,curves were drawn freehand, a method at its besl unsatis-factory, but the only < ne available. The figures in the first,third, and fifth columns in the table below hawascertained by the readings on the squared paper. Thefigures for 10 in the second column and for 20 in thesecond column have been obtained by interpolation, butadjustments were in some few eases nec
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
