8 INDEX TO THE LITERATURE OF ZIRCONIUM 



1820 : 19. Pfaff. (Reactions. Similarity to titanium.) 

 J. fill- Chem. (Schweigger), 28, 102. 



1820 : 20. Chevreul. (Reactions. Separation from iron. Compari- 

 son with titanium. Double potassium salt.) 



Ann. cliim. phys. [2], 13, 245-9 ; J. fiir Chem. (Schweigger), 29, 144 ; 

 J. de Phys., 90, 170-5 ; Oken. Ms. (1821), 524-26: Phil. Mag., 55, 

 377-9 : Tromnisdorff, N. J. de Pharm., 5, 214-221. 



1820 : 21. Dubois and Silveira. (Preparation pure Zirconia. Sepa- 

 ration from iron.) 



Ann. chim. phys. [2], 14, 110; Phil. Mag. [1], 55, 377-9. 



1822 : 22. Stromeyer. (Presence in eudialith.) 

 Berzelius" Jsb., i, 40. 



1823 : 23. Berzelius. (Silicofluoride.) 



Ann. der Phys. (Pogg.), i, 23, 197; Sv. Vet. Akad. Handl., 1828, 284 ; 

 Am. J. Sci., 9, 377. 



1824 : 24. Berzelius. (Researches, Preparation.) 



Sv. Vet. Akad. Handl., 1824, 295; Ann. der Phys. (Pogg.), 4, 117- 

 45: J. fiir Chem. (Schweigger), 21, 40; Berzelius' Jsb., 5, 106- 

 12 ; Ann. chim. phys. [2], 26, 48 ; J. de Pharm. [2], 10, 461 ; Mag. 

 fur Pharm. (Geigers), 12, 295 ; Phil. Mag., 64, 393. 



1825 : 25. Berzelius. (Properties of salts.) 



Ann. chim. phys. [2], 29, 337. 



1826 : 26. Berzelius. (Separation from titanium.) 



Ann. der Phys. (Pogg.), 6, 231-2 ; Berzelius' Jsb., 5, 139. 

 1826 : 27. Berzelius. (Sulphotungstate.) 



Ann. der Phys. (Pogg.), 8, 279. 

 1826 : 28. Berzelius. (Sulpharsenate.) 



Ann. der Phys. (Pogg.), 7, 24, 144 ; Berzelius' Jsb., 6, ia4. 

 1826 : 29. Berzelius. (Sulphomolybdate.) 



Ann. der Phys. (Pogg.), 7, 273 ; Berzelius' Jsb., 6, 197. 



1826 : 30. Berzelius. (Atomic weight.) 



Ann. der Phys. (Pogg.), 8, 186. 



1827 : 31. Berzelius. (Atomic weight.) 



Ann. der Phys. (Pogg.), 10, 341. 



1828 : 32. Sprengel. (Presence in plants.) 



J. techn. Chem., 3, 314. 



1830 : 33. Berthemot. (Bromide.) 

 Ann. chim. phys. [2]. 44, 393. 



