. Journal. Fig 1 Ill, 11)06.] JOURNAL AND PATENT IKRATURE.—( XXI, Wll. ,v Will. Blfl modifications described, are represi oted in Pigs. 1 and I i 1, E is a vnrl containing mercury, ami oni tbiB In mereurj enters the adjoining tube dton out «l the vessel A. Am excess t in, gomes i A overflows by the pipe B to C, anil so,,, |.;. |i is a valve which closes C when F. is iukage due to a too rapid ascent of the mei|aM at V| and is contracted. Another type of, I, shown in Ki;_r. -• A and B are three-way stop-i piece t rubber lulling with serew-pinch-;,n,l open to the air. is attachedshown)
. Journal. Fig 1 Ill, 11)06.] JOURNAL AND PATENT IKRATURE.—( XXI, Wll. ,v Will. Blfl modifications described, are represi oted in Pigs. 1 and I i 1, E is a vnrl containing mercury, ami oni tbiB In mereurj enters the adjoining tube dton out «l the vessel A. Am excess t in, gomes i A overflows by the pipe B to C, anil so,,, |.;. |i is a valve which closes C when F. is iukage due to a too rapid ascent of the mei|aM at V| and is contracted. Another type of, I, shown in Ki;_r. -• A and B are three-way stop-i piece t rubber lulling with serew-pinch-;,n,l open to the air. is attachedshown). ( is an ordinary stopcock. TheI,, be evacuated is attached to D. ami K is connectedtump (Bunsen water-pump), which gives a vacuum,ni. or better. F is a vessel containing a drying(J, II and J arc valves. K is a glass \, - , I amount of mercury is introduced,oured into L through E until the inner tubelow the Fig. 2. Die the pump, the stopcock at A is turned so as ton towards E, the screw-pinch-cock at A being attached to E is then started. When thearv vacuum in K is obtained. A is turned so as to-ad towards E. and the pinch-cock on the rubberit A is gradually opened so as to admit air. Thethen uses into the bulb and tubes above K andit H and J. A is then again opened towards E,? .nation once more begun. The mercury flows • K from above, and so on. luub at M contains some mercury which acts iThe advantages of the pump are:—(1) The small • of manipulation; (2) the rapiditv of working; ? rv keeps clean. mechanical contrivances at A the pumpics automatic.—C. E. F. English Patent.• Mixtures ; Process of and Means for Testing -ition of . F. Haber, Karlsruhe. Ger- >>? Eng. Pat. , Aug. 20, 1904. rocess claimed for testing gaseous mixtures consists in causing light to pass non-norms Isurface of contact of i he mi 11 medium of c pai. on, and determinin The
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
