BIBLIOGRAPHY OF ANALYTICAL CHEMISTRY OF MANGANESE 23 



1869: 4. How. On the Non-Precipitation of Manganese by Sul- 

 phide of Ammonium in Presence of some Organic Ammoniacal 

 Salts. 



Chem. News, 19, 137; Jsb. Chcm., 1869, 887; Bull. soc. chim. (2), 

 13, 48; Ztschr. Chem., 1869, 414; Ztschr. anal. Chem., 9, 382. 



Influence of oxalic, tartaric, and citric acids on the precipitation as 

 sulphide. 



1869: 5. LucKOW, C. Bestimmung des Kupfers in Mansfelder 

 Schiefern. 



Ztschr. anal. Chem., 8, 24. 

 Electrolytic separation from copper. 



1869: 6. MoHR, F. Zur Braunsteinanalyse. 



Ztschr. anal. Chem., 8, 314; Chem. News, 22, 236. 

 Determination of manganese peroxide in pyrolusite. Comments on 

 the Fresenius and Will method. See 1843: 3. 



1869 : 7. Muck. Ueber die Fallbarkeit des Kobalts durch Schwefel- 

 wasserstoff und Reinigung kobalthaltiger Mangansalze. 



Ztschr. Chem., 12, 626; Bull. soc. chim. (2), 13, 334. 

 Precipitation of cobalt from a solution containing manganotis car- 

 bonate by means of hydrogen sulphide. 



1869: 8. Prior, M. E. Ueber der Zusammensetzung der Mangan- 

 carbonate. 



Ztschr. anal. Chem., 8, 428; Jsb. Chem., 1869, 886; Ztschr. Chem., 



1870, 274; Bull. soc. chim. (2), 14, 194. 

 Determination by precipitation as carbonate. Determination of 

 manganese peroxide by passing the chlorine evolved from the 

 action of hydrochloric acid into a ferrous salt solution and titrat- 

 ing for the unoxidized iron. 



1869: 9. Renard, a. De I'emploi du phosphate de soude pour 

 r^limination du manganese dans I'analyse volumetrique des 

 minerais de zinc. 



Bull. soc. chim. (2), 11, 473; Chem. Centrbl., 1870, 224; Ztschr. 

 anal. Chem., 8, 460; Chem. News, 20, t,^; Ztschr. Chem., 1869, 

 662. 

 Separation from zinc by means of phosphates in ammoniacal solu- 

 tion. 



1869: 10. Sherer, E., and Rumpf, G. On the Estimation of Per- 

 oxide of Manganese in Manganese Ores. 



Chem. News, 20, 302; 21, 48; Jsb. Chem., 1869, S89; Ztschr. Chem., 



1870, 478- 

 Compai-ison of the method of Fresenius and Will with' the Bunsen 

 method; also discussion of the iron method, and passage of chlo- 

 rine into milk of lime and titration with arsenious acid. 



