BIBLIOGRAPHY OF ANALYTICAL CHEMISTRY OF MANGANESE 67 



1890: 2. VAN Bemmeln, J. M. Ueber die Bestimmung des Wassers, 

 des Humus, des Schwefels, des in colloidalen Silicaten gebun- 

 denen Kieselsaure, des Mangans, u. s. w. im Ackerboden. 



Landw. Vers. Stat., 37, 289; Jsb. Chem., 1890, 2557; J. Chem. 



Soc. (Lond.), 58, 833. 

 Determination in soils. Camot method. See 1888: 2. 



1890: 3. Boyd, R. C. The Determination of Manganese and Zinc 

 as Pyrophosphates. 



School Mines Quart., 11, 355; Jsb. Chem., 1890, 2442; J. Soc. 



Chem. Ind., 9, 973. 

 See title. 



1890: 4. Carnot, a. (Discussion.) 



Bull. soc. chim. (3), 3, 594; Chem. Ztg., 14, 637; Oester. Ztschr. 



Berg- u. Hiittenw., 38, 450. 

 Precipitation by means of hydrogen peroxide. 



1890: 5. Fresenius, R. and Hintz, E. Ueber die Analyse von 

 Chromeisen. 



Ztschr. anal. Chem., 29, 28; Jsb. Chem., 1890, 2440. 



Determination in chromite. 

 1890: 6. Hellman, C. G. Determination of Manganese in Iron. 



Eng. Min. J., 50, 593. 



Recommends method of Samstrom. See 1881: 15. 



1890: 7. Jensch, E. Zur Bestimmung des Zinks in manganhal- 

 tigem Flugstaube. 



Chem. Ztg., 13, 465, 726; J. Chem. Soc. (Lond.), 58, 294. 

 Separation from zinc by means of hydrogen peroxide. 



1890: 8. DE KoNiNCK, L. L. Etudes sur les procedes d'analyse des 

 matieres premieres et des produits de la siderurgie. 



Rev. univers. des mines, 9, 243; Jsb. Chem., 1890, 2436; Chem. 



News, 62, 19; J. Anal. Chem., 4, 335. 

 Separation from iron by means of nitroso-/^ naphthol. 



1890: 9. LuNGE, G. Ueber die Werthbestimmung des Chorkalks, 

 Braunsteins und Chamaleons auf gasvolumetrischem Wege 

 (mittels des Nitrometers). 



Ztschr. angew. Chem., 1890, 10; J. Soc. Chem. Ind., 9, 21; Jsb. 

 Chem., 1890, 2389; Chem. Ind., 13, 88; Ztschr. anal. Chem., 30, 

 221; Wagner's Jsb., 36, 560; J. Chem. Soc. (Lond.), 58, 1470. 



Determination of peroxide by means of hydrogen peroxide. 



1890: 10. LuNGE, G. Zur gasvolumetrischen Analyse durch Was- 

 serstoff superoxy d . 



Ztschr. angew. Chem., 1890, 136; Jsb. Chem., 1890, 2444. 

 Reply to Baumann's criticisms. See 1890: i. 



