6 BIBLIOGRAPHY OF ANALYTICAL CHEMISTRY OF MANGANESE 



1833: 2. Planiawa. Trennung des Manganoxyds und Eisenoxyds. 

 * Baumgartner's N. Ztschr., 2, 241; Pharm. Centrbl., 1833, 699. 

 Separation from iron by fusion of the precipitate produced by am- 

 monia with alkali and a nitrate. 



1833: 3. Zenneck. Pneumatische Methode der Untersuchung von 

 Manganerzen auf ihren Superoxydgehalt, nebst Angabe von 

 einigen demnach angestellten Priifungen. 



J. techn. Chem. (Erdmann), 18, 75; Pharm. Centrbl., 1833, 959; 



Am. J. Sci., 29, 374. 

 A comparison of gasometric methods, including Berthier's methods, 

 expulsion of oxygen by heating the ore alone, by heating with sul- 

 phuric acid, and by heating with sugar; also the measurement of 

 chlorine evolved on treatment with hydrochloric acid, and the 

 measttrement of the nitrogen evolved by heating with concentrated 

 hydrochloric acid, with the addition of ammonia. 



1834: I. DEMARfAY, . H. Sur I'emploi des sels insolubles comme 

 moyen de separation dans I'analyse chimique. 



Ann. chim. phys. (2), 55, 398; Pharm. Centrbl., 1834, 660; Ann. 



Chem. (Liebig), 11, 241. 

 Separation from iron by boiling a solution to which a few drops of 

 ammonium carbonate solution in excess have been added. 



1835: I. Gay-Lussac. Nouvelle instruction sur la chloromdtrie. 



Ann. chim. phys. (2), 60, 252; Pol. Centrbl., 1836, 286; Ann. Chem. 

 (Liebig), 18, 47; Arch. Pharm., 58, 12S. 



Determination of peroxide by solution in hydrochloric acid, passage 

 of the chlorine into potassium hydroxide solution, and titration 

 for the hypochlorite formed with arsenious acid. 



1835: 2. Persoz, J. Sur I'ordre de tendance des oxides pour les 

 acides et les applications qui en decoulent. 



Ann. chim. phys. (2), 58, 199; Pharm. Centrbl., 1835, 437. 

 Separation from iron, nickel, and cobalt by means of mercuric oxide. 



1836: I, Kraskowitz. Manganreaction. 



Ann. der Phys. (Pogg.) , 36, 565; Pharm. Centrbl., 1836, 175; Arch. 



Pharm., 58, 199. 

 Detection by means of the red produced by hydrochloric acid when 



brought into contact with the mass after fusion with potassium 



carbonate. 



1836: 2. Thomson. On minerals containing columbium. 



Rec. Gen. Sci., 1836, 412; Pol. Centrbl., 1836, 788; Pharnl. Centrbl., 

 1836, 475; Ann. des Mines (3), 11, 249; J. prakt. Chem., 9, 433; 

 Ann. Chem. (Liebig), 19, 194; J. de pharm. (2), 22, 440; Dingl. 

 pol. J., 61, 55: J. Frank. Inst., 22, 343; Arch. Pharm., 58, 68 and 

 132. 



