. Journal. m-containing [hasc-exchanging] 8ilicat4:s; Process of producing . Process of base [Purification of water.] A. Kolb,Charlottenbu^^-^Vestend. Germanv. Assignor toThe Pei-mutit^Co., New York. (A),794 and (b) ,3,795, Aug. 8, 1916. Dateof Mar. 28. 1916. (.a) a solctiox, which may be alkaUne. containingchromium, is precipitated with an alkaline solutionof and the precipitate washed, pressed, anddried, (b) The hciuid, water, to be treated orpurified, is passed through a bed of hard granularmaterial wliich contains chromium, alkali, sili
. Journal. m-containing [hasc-exchanging] 8ilicat4:s; Process of producing . Process of base [Purification of water.] A. Kolb,Charlottenbu^^-^Vestend. Germanv. Assignor toThe Pei-mutit^Co., New York. (A),794 and (b) ,3,795, Aug. 8, 1916. Dateof Mar. 28. 1916. (.a) a solctiox, which may be alkaUne. containingchromium, is precipitated with an alkaline solutionof and the precipitate washed, pressed, anddried, (b) The hciuid, water, to be treated orpurified, is passed through a bed of hard granularmaterial wliich contains chromium, alkali, silica,and water, and mav also contain a catalyst. —B. V. S. Sulphur and nitrogen ; Mamifacture of a mixture of , and apparatus therefor. L. Descamps. Chateamoux. France. Eng. Pat. Jan. 21. 1916. (.Appl. No. 1010 of 1910.) Under Int. July 18. , preheated air is completely deprived ofoxygen by contact with a large surface of moltensulpluir. In the apparatus employed (see fig.).. dr>- air entering at the opening. D. is preheated bypassmg successivelv below and above the baffle-plate. ^E. and through the pipe. F, and is thendeflected on to the smface of the molten sulphur,B, bv the circular cap, H, supported on the tripod. »6i Cu Vm.—GLASS; CERAMICS. (Sept. 30, 1916. I. The mixtur of siilphur dioxide, nitroeen, andsulphur vapour thus proihioetl is coudvictetlthrough the exit, L. to an apparatus for eoudensiiitrsulphur vapour. The uiixtiuv of suli^hur dioxideand aitrosen is suitable for use in the manufactureof hydrosulphites.—W. E. F. V. Carbon bisulphide; Manufacture of- A. Walter, Artislev. Pat. Aug. 1. 1910. Date of appl., Sept. 23, 1913 ; renewed Jan. 6. sulphide. evolved in a retort con-taining highly lieated rarl>on and fed with sulphur,is passt\l through a retort containing highly heatedcarbon to produce carbon bistilpbide.—W. E. F. P. Javel trater [hypochlorite solution] ; Solid product intended
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