64 BIBLIOGRAPHY OF ANALYTICAL CHEMISTRY OF MANGANESE 



1889: I. Alt, H. Zur Fallung von Mangan als Hyperoxyd. 



Chem. Ztg., 13, 1339; Chem. CentrbL 1889, b, 859; Jsb. Chem., 



1889, 2399; J. Chem. Soc. (Lond.), 58, 419; Stahl u. Eisen, 



9, 961; Berg- u. hiittenin. Ztg. 48, 429; J. AnaL Chem., 3, 425; 



Techn.-chem. Jahrb., 12, 13. 

 Adhesion of precipitate to glass said to be prevented by boiUng 



the solution to expel air. 



1889: 2. Blum, L. Eine Fehlerquelle bei der Trennung geringer 

 Manganmengen von viel Kalk durch Schwefelammonium. 



Ztschr. anal. Chem., 28, 454; Chem. Centrbl., 1889, b, 513; J. 

 Chem. Soc. (Lond.), 56, 1087; Ber., 22, 706, Ref. ; Chem. Ind., 

 13, 89; Stahl u. Eisen, 9, 960; School Mines Quart., 11, 69; J. 

 Iron Steel Inst., 1890, a, 372; J. Soc. Chem. Ind., 8, 922; An- 

 alyst, 14, 192. 



Separation from calcium by means of ammonium sulphide. 



1889: 3. Brand, A. Ueber die Anwendung von pyrophosphor- 

 sauren Doppelsalzen zur Bestimmung und Trennung von 

 Metallen durch Electrolyse. 



Ztschr. anal. Chem., 28, 586, 599, and 604; Chem. Centrbl., 1890, 



a, 140; Chem. Ind., 13, 90; J. Chem. Soc. (Lond.), 58, 294. 

 Electrolytic determination, and separation from nickel, cobalt, 

 copper, cadmium, zinc, mercury, and iron. 



1889: 4. FiNKENER. Zur Bestimmung des wirksamen Sauerstoffs. 



Mitthl. Vers. Berlin, 1889, 158; Jsb. Chem., 1890, 2444; Dingl. 

 pol. J., 276, 479; Ztschr. angew. Chem., 1890, 271. 



Comments on Bimsen, ferrous sulphate, and oxalic acid (volu- 

 metric) methods, for the determination of peroxide. 



1889: 5. Friedburg, L. H. Notes on Quantitative Analysis. 

 Chem. News, 62, 23; Jsb. Chem.,. 1890, 2379. 

 Determination in silicates. 



1889: 5a. GoocH, F. a. and Whitfield, J. E. Analyses of Waters 



of the Yellowstone National Park. 



Bull. U. S. Geol. Surv., No. 47, 27. 

 Determination in mineral waters. 



1889: 6. Klein, J. Ueber die Empfindlichkeit des Mangannach- 

 weises mittels Wasserstoflfsuperoxyd. 



Arch. Pharm. (3), 27, 77; Chem. Centrbl., 1889, a, 391; Jsb. Chem., 

 1889, 2398; Chem. Ztg., 13, 83, Rep.; Ber., 22, 171, Ref.; J. 

 Chem. Soc, 56, 653; Berg- u. huttenm. Ztg., 48, 164; Chem. 

 -techn. Rep., 28, a, 240. 

 Detection, in presence of cobalt, by means of hydrogen peroxide. 



