204 BIBLIOGRAPHY OF METALS OF THE PLATIXUM GROUP 



1884: 20. H. J. Seaman. Note on patching platinum crucibles. Pt, 

 Trans. Amer. Inst. Min. Eng. 13 (1884), 140; Eng. and Min. J. 37 

 (1884), 421; Chem. Ztg. 8 (1884), 933; Chem, News, 49 (1884), 

 274; Jsb. Chem. 1884, 1687. 



1884: 21. A. Gawaloyski. Platiniilter. Pt. 



Ztsch. anal. Chem. 23 (1884), 372; Chem. Ztg; 8 (1884), 1509. 



1884: 22. G. L. Anders. Telephone transmitters. (Osmium in mi- 

 crophone.) Os. 

 Sei. Amer. Suppl. 18 (1884), 7201; Dingl. pol. J. 254 (1884), 442. 



1884: 23. Tremeschini. (Pyrometer of platinum.) Pt. 



Portefeuille econom. Mach. 9 (1884), 64; Dingl. pol. J. 254 (1884), 



158. 



1884: 24. J. Lewis. Brennerkopf zur Verbrennung eines Gemisches 

 Leuchtgas und -Luft in Platindrahtgewebe. D. R. Patent 30,174 

 May 16, 1884. Pt. 



Dingl. pol. J. 259 (1886), 413. 



1884: 25. W. Siemens. Lich'teinheit der Pariser Conferenz. (Plati- 

 num light unit.) Pt. 

 Sitzber. Akad. Berlin, 1884, 601; Ann. der Phys. (Pogg.) [2], 22 

 (1884), 304; Elektrotech. Ztsch. 1884, 244; Dingl. pol. J. 252 

 (1884), 529; 254 (1884), 122; Jsb. Chem. 1884, 281. 



1884: 26. J. A^iolle. Sur I'etalon absolu de lumiere. (Platinum unit.) 



Pt. 

 C. E. 98 (1884), 1032; Ann. chim.'phys. [6], 3 (1884), 373; Ding], 

 pol. J. 254 (1884), 499; Jsb. Chem. 1884, 281; J. fiir Gasbeleucht. 

 1884, 763; Chem. Ztg. 9 (1885), 249. 



1884: 27. . Electrische Einheiten und Lichteinheiten. 



(Platinum unit.) Pt. 



Ann. der Phys. (Pogg.) [2], 22 (1884), 616; Jsb. Chem. 1884, 281. 



1884: 28. S. Bidavell. On a relation between the coefficient of the 

 Thomson effect and certain other physical properties of metals. 

 (Specific heat and resistance and coefficient of expansion.) Pt, Pd. 

 Proc. Koy. Soc. London, 37 (1884), 25. 



1884: 29. C. G. Knott. The electrical resistance of hydrogenized pal- 

 ladium. Pd. 

 Proc. Eoy. Soc. Edinb. 12 (1884), 181; Ann. der Phys. (Pogg.) 

 Beibl. S (1884), 394; Jsb. Chem. 1884, 250. 



1884: 30. L. Weiller. (Electrical resistance of platinum.) Pt. 



Kev. Indust. 1884, 242; Dingl. pol. J. 253 (1884), 134; Jsb. Chem. 

 1884, 249. 



