66 BIBLIOGRAPHY OF ANALYTICAL CHEMISTRY OF MANGANESE 



1889: 14. Neumann, G. Quantitative Bestimmung von Zink neben 

 Mangan. 



Ztschr. anaL Chem., 28, 57; Jsb. Chem., 1889, 2408; J. Chem. Soc. 

 (Lond.), 56, 549; J. Soc. Chem. Ind., 8, 62; J. AnaL Chem., 4, 

 69; Chem. Ztg., 23, 38, Rep. 

 Separation of zinc as sulphide from a formic acid solution. 



1889: 15. Radau, C. Zur Kenntniss vanadinsaurer Salze. 



Ann. Chem. (Liebig), 251, 154. 



Separation from vanadium by fusion with sodium carbonate, solu- 

 tion of the fused mass in water, precipitation of hydrated man- 

 ganese peroxide with alcohol, re-solution in hydrochloric acid, 

 and re-precipitation with hydrogen peroxide and ammonia. 



1889: 16. Reitmair, 0. Kalkbestimmung bei Gegenwart von 

 Phosphorsaure, Eisen, Thonerde und Mangan. 



Ztschr. angew. Chem., 1889, 358; Ztschr. anal. Chem., 31, 314. 

 Separation from calcium by means of oxalates. 



1889: 17. Schneider, L. Eine neue Bestimmungsmethode des 

 Mangans. 



Oester. Ztschr. Berg- u. Hiittenw., 36, 608; Chem. Centrbl., 1889, 



a, 64; Berg- u. hiittenm. Ztg., 48, 153; Chem.-techn. Centrl. 



Anz., 1889, 64; Pharm. Centrh., 30, 189; Chem.-techn. Rep. 



28, a, 240. 



Oxidation by bismuth tetroxide and titration with hydrogen peroxide 



1889: 18. Smith, E. F. and Frankel, L. K. Electrolytic Separations. 

 Chem. News, 60, 102 and 262; Jsb. Chem., 1889, 2305; Chem. 



Ztg., 13, 257, Rep.; J. Anal. Chem., 3, 386. 

 Electrolytic determination in the presence of potassium sulpho- 

 cyanate. 

 1889: 19. Wells, J. S. C. and Vulte, H. T. A Scheme for the Sep- 

 aration of Al, Cr, Fe, Co, Ni, Mn, Zn, Ba, Ca, Sr, and Mg, in 

 the Presence of Phosphoric, Arsenic, Oxalic, Boric, Silicic, 

 Hydrofluoric, Acetic, and Tartaric Acids, and Organic Matter. 

 School Mines Quart., 10, 3; Analyst, 14, 1888; Ztschr. angew. 



Chem., 1889, 681. 

 Qualitative separation from zinc as sulphide, and detection in the 

 mixed sulphides by fusion with sodium carbonate. 

 1890: I. Baumann, A. Die Analyse des Braunsteins mittels Wasser- 

 stoffsuperoxyd. 



Ztschr. angew. Chem., 1890, 72; Jsb. Chem., 1890, 2442; Chem. 



News, 63, 72; Monit. scientif., 35, 596. 

 Comments on the Lunge method and also on the Fresenius-Will 

 method. Determination of peroxide by volumetric and gaso- 

 metric methods. See 1885: 13; 1890:9; 1890: io;'[and 1843: 3. 



