AMERICAN PATENTS.
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211,762.-Pun;firatim of paro#ne oils. Tnoaras MARRIN. Treatment of the oil with sludge acid, and neutrnlizing the decanted and wmhed parafine oil.
211,782.--Lipuiddtyrrs f e r oils, paints, efc. A. W. PFSATT. A compound consisting of oil, rosin, caustic soda and a solution chloride of manganese.
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Feb. 4, 187'9. 211,909.-Alloysfer metricgold coin. War. W. HUBBELT,. Gold, 30 pts. ; silver, 1.5 ; copper, 3.6 pts. 2ll,928.-Composifions f o r dyingpaints and oils. A. W. PRATT. To the ingredients described under No. 211,782 is added a certain quantity of some lead-Ralt. 211,98l.--Proce~~sesfoot bronzing wood, porcrlain, gloss, mefol,etc. R. BOETTOER. The articles are coated with a thin film of soluble glass, and the powder applied to the wet surface by means of a sieve or duster. 212,016 and 212,01'7.-Monuforture of whitepipnents. H. KNIGHT. Precipitated zinc sulphide, barium sulphate and magnesium carbonate, are mixed, calcined and ground. 212,058.--Ru6drr oils. 0.L. SCOTT and CYRUSMCCUMRER. A composition consisting of india rubber, linseed oil, a variety of rosins and gums, together with benzol, naphta, turpentine and lead preparations. 212,077.--ll.fanu facture of allcvs, etc. N. W.WII~LIAMES. Claim : The hardening and toughening of metal castings and alloys. by applying to the surface of the molten metal pieces of horn or nnnlagous material
Feb.11,I&7Y. 2 1 2 , ~ 4 . - M a n u j z c t u r e of hydraulic cement. I. A. FRANCIS. Proposes to utilize in this manufacture coal-dust, coal ashes and sewer mud, or refuse lime from tanneries, and parting sctnd from foundries. 212,15O.-A&~cial furl. F. F. E. MUCK. Uonsista of coal-dust and decomposed fucus.
Feb. 18,1879. 21!&%1.--/;lavm'ng compounds f.1 f o b ~ c o . D. STEHNBERQ. Claim : A solution of valerian-root and the following ingredients : caeaia-iistula, tonka-bean, Peruvian balsam, orange-blossom oil, essence valerian, butyric ether, orange-blomms, omnge-peel, tamarinds or prunes, vanilla-bean and castor.
