405
FOREIGG PATENTS.
233,886.--An article for rafiit food. Compressed bran.
War. HARROLD SMITH.
233,887.-FWi. 'WM. HARROLD BMITH. Compressed saw-dust. 233,9OO.--Producing aluntiniuni bronze. JAMESWEBBTER. Copper electroplated with aluminium is melted altogether with a n alloy of copper, nickel, aluminium and tin. 233,916.-Manufacfure
of
aluminous rake.
GEORQEF. €31"
and ROBERT
HEERLEIN. Sulphate of alumina containing iron is treated in a semi-fluid state with alkaline sulphites. 233,948.-Afanzi fnrfure of nttijcial marble 01 sfone. ALVINM. RICHARDSON. 233,96O.--Arfijcinl sfone a i d nrarlZe. WILLIAMH. YOUNG. 234,025.--Appntnfus
fot
6trnting siriphur to produce su(phutl'c arid.
HENRY
GLOVER.
Foreign Patents, Condensed from R . B i m e R > t m N ' s Report to the German Chemical Society. by OTTO H . KRACSE.
KARLMOELLER, Kupferhammer, near Brackwede : Improvements i n npparatus forfiltering vnpors aizdgnses. (Germ. P., No. 10451, Jan. 22, 1880, being 2, 191.)-The adadditional Patent to Germ. P., No. 8806. See this JOURNAL, ditions relate to arrangements for keeping the filters moist, for scraping off dust and soot, and 'for regulating the temperature. T. H. COBLEY,Dunstable: Method of workin~up inarzure sirnw. (Engl. P., No. 3312, August 16,1879.)-Tlie manure is digested with calcium sulphide and boiled with water. to obtain ammonia. After separating the liquid, the straw is treated with alkali, and the cellulose which results is used in the manufacture of paper. PAULSTUBE,Paris: Mnnufnrfuve of illumina/ing and heating gas. (Engl. P., No. 3302, August 16. 1879.)-Water gas, prepared in a retort from heated coal and steam in the usual way, is carburetted in a second retort by means of oil, fat, rosin, tar, etc., in the usual way, and freed from carbonic acid Ly milk of lime in the usual way. The carbonic acid, however, is removed by means of an ammoniacal solution of copper, which can be regenerated by heating. Besides this, the patent contains Mallet's process for preparing oxygen from air, and Tessik du Motay's method of obtaining it also from air, by means of alternate treatment of heated sodium permanganate with air and superheated steam. EMILDREYSSIQ, Itavensburg Tnr varnish. (Germ. P., No. 10685, Nov. 13, 1879.)-Tar heated to 70" C.,with equal weight of liflranlie lime, Honinn or Portland cemeut. This varnisli is not acted upon by acids, and is adapted for coating wood exposed to water, etc. JACOB ENQELS, IZnlk : Explosizie vznde front pi*roxyline, nifrog(ycen'ne, pyropaper, xyloidirie, nifi~onrnrz~zite n n d silicnte of soda, which explodes a t R low tempera-
406
FOREIQS PATENTG.
t w e , idth or wifhortt a percrmion cop. (Germ. P., KO.10232. Nov. 28, 1879.)The ~lbovesubstances arc mixed i n various proportions, and put up in the form of cartridges, which are covered with a collodion c;ipsule. GLJSTAV&IoYs.sN,Cl~itrnpigneuclles:,i/'thud of ,i3t1ii1f b h s f f r i r n n f e s h r ~ (Germ. P . , No. 10149, M;ry 80. 187'J.)-Blast furnace slag wliicli, owing to its chemical composition, is unfit for n1;rkiiig sltig bi,icks or stones, is run iuto a moval)le retining furnace, wilere it receives such additions as will render it suitable for that purpose. PAUL M A G N I K Rand L. F. DOERFI.TNOEI
