212 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



METALLURGY AND CHEMISTRY (Continued) 



1455. . Recherches sur la separation par voie humide de Tor et du 



platine d'avec retain et 1'antimoine. 



Rev. Univ. Mines Mt. Trav. Publ. Sci. Arts Appl. Indust., sem. 2, Vol. 10, 1861, 

 pp. 171-173. 



1455a. BRACKENBURY, C. Notes on tin dressing. 



Bull. Inst. Mg. Met., 52, Jan. 14, 1909, London. 



" Contributed remarks in which the author gives a series of experiments showing a 

 great variation between vanning assays and chemical assays of tin ore." 



1456. BRANDENBURG, H., WETLAND, A., and KEMPEN, A. R. British patent, 16,- 



377 of 1903. 



Eng. Mg. Journ., Vol. 76, 1903, New York, p. 630. 



" Tin extraction from dross. The use of a mixture of sulphuric and hydrochloric 

 acids for extracting tin from dross and slags, the whole of the tin being thus 

 extracted in soluble form without being thrown down as oxide." 



1457. BROOKS, CECIL J. .Quantitative estimation of tin. 



Eng. Mg. Journ., Vol. 61, 1896, New York, p. 494. 



A brief record of experiments made to ascertain the cause of the low results which 

 are often obtained in the determination of tin. 



1458. BROWNE, FRANK. Chinese tin. 



Chem. News, Vol. 95, 1907, London, pp. 3, 4. 



Abstract by W. S. Landis in Chem. Abs., No. 5, Vol. 1, March 5, 1907, Easton, 

 p. 549. 

 Description of a Chinese method of smelting tin. 



1459. BUNSEN, R. Unterscheidung und Trennung des Arseniks von Antimon 



und Zinn. 



Ann. Chem. Pharm., Vol. 106, 1858, Heidelberg, p. 3. 



1460. CAHOURS, A. Recherches sur les radicaux organo-me'tallique. 



C. R. Acad. Sci., Vol. 48, 1859, Paris, pp. 833-837. 



Action des alliages d'etain et de sodium sur les ethers iodhydriques des diffrentes 

 series alcooliques. 



1461. CAHOURS, A., and DEMARQAY, E. Sur les stannpropyles et les isostann- 



propyles. 



C. R. Acad. Sci., Vol. 88, 1879, Paris, pp. 11124117. 



1462. . Sur les radicaux organome'talliques de retain. Stannbutyles 



et stannamyles. 



C. R. Acad. Sci., Vol. 89, 1879, Paris, pp. 68-73. 



1463. CAHOURS, A., and RICHE, A. Recherches sur le stannethyle, nouveau 



radical organique renfermant de retain. 



C. R. Acad. Sci., Vol. 35, 1852, Paris, pp. 91-95. 



Abstract in Amer. Journ. Sci. Arts, 2d ser., Vol. 14, 1852, New Haven, p. 421. 

 Description of and mode of making an organic tin compound to whose radical the 

 authors give the name " stannethyl." 



1464. . Recherches sur un nouveau radical organique refermant de 



retain, le stanmethyle. 



C. R, Acad. Sci., Vol. 36, 1853, Paris, pp. 1001-1004. 



