BIBLIOGRAPHY OF METALS OF THE PLATINUM GROUP 33 



1820: 1. E. Davy. On some combinations of platinum. (Platinum 

 sulfate on alcohol, and as a test for gelatine; a grey oxid of pla- 

 tinum; platinum fulminate.) Pt. 

 Phil. Trans. London, 110 (1820), 108: Proc. Roy. Soc. London, 2 

 (1833), 124; Ann. of Phil. (Thomson), 15 (1820), 297; 16 (1820), 

 385; J. fiir Chem. (Schweig-ger), 31 (1821), 340; Berzelius Jsb. 1 

 (1822), 59: Bill. Soc. Philom. Paris, 1820, 54; Phil. Mag. 56 

 (1820), 330; Ann. des Mines, 6 (1821), 148. 



1820: 2. T. Thomson. On arsenic. (Action of sodium arseniate on 

 iridium, rhodium and platinum salts.) Pt, Ir, Eh. 



Ann. of Phil. (Thomson), 15 (1820), 84; J. fiir Chem. (Schweig- 

 geii), 29 (1820), 435. 



1820: 3. T. Thomson. Eepetition of Fox and Clarke's experiments _on 

 the alloy of platinum and tin. Pt. 



Ann. of Phil. (Thomson), 16 (1820), 18. 



1820: 4. H. Eose. Beitriige zur chemischen Kenntniss des Glimmers. 

 (Oxydation des Platins durch Braunstein.) Pt. 



J. fiir Chem. (Schweigger), 29 (1820), 282. 



1820: 5. G. B. Sowerby. Crystallization of platinum. Pt. 



Ann. of Phil. 16 (1820), 233; Ann. chim. phys. 15 (1820), 111; Polyt. 

 J. (Dingl.), 3 (1820), 125. 



1820: 6. E. Hare. Strictures on a publication entitled Clark's " Gas 

 Blow-pipe." Pt. 



Amer. J. of Sci, 2 (1820), 281. 



1820: 7. J. Stodart and M. Faraday. Experiments on the alloys of 

 steel, made with a view to its improvement. Pt, Pd, Ir, Eh, Os. 



Quart. J. Sci. 9 (1820), 319; Ann. der Phys. (Gilbert), 66 (1820), 

 197; Ann. chim. phys. 15 (1820), 157; Ann. des Mines, 6 (1821), 

 261; Jern. Kont. Ann. 5 (1821), 120; J. de Phys. 91 (1820), 378; 

 Phil. Mag. 56 (1820), 26; Edin. Phil. J. 3 (1820), 308; Arch. ges. 

 Naturl. 2 (1824), 36, 



1821: 1. . Extraordinary mass of platina discovered in 



Peru. Pt. 



Edin. Phil. J. 4 (1821), 214; Amer. J. of Sci. 4 (1822), 28. 



1821: 2. J. J. Berzelius. Sur la composition des oxides du platine et 



de For. Pt. 



Ann. chim. phys. 18 (1821), 146; J. fiir Chem. (Schweigger), 33 



(1821), 422; 34 (1822), 81; Quart. J. Sci. 12 (1822), 412; Edin. 



Phil. J. 6 (1822), 9; Ann. des Mines, 7 (1822), 137. 



1821: 3. J. J. Berzelius. Om de svafvelbundna alkaliernas samman- 



siittning. (Sulfids of platinum and rhodium.) Pt, Eh. 



Akad. Handl. (Stockholm), 1821, i, 80; Ann. chim. phys. 20 (1S22), 



34, 113, 225; Quart. J. Sci. 11 (1821), 388; 14 (1822), 209; J. fiir 



