Phil. Mag. Ser. 6, Vol. 14, PI. X. 



■it:. 















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K 















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I CU/IH PlATW 

 11 



HrmociA 



• 



WIS 











IT . •. 



■ Hromcc* 



Diagram IV. 



LlMK-COATRD I'l.A'l-INl'M IN HYDROGEN VT DIFFERENT TEMPERATURES. 



ZlMPCf/CS 



DlAOHAM 



1 

 11 

 111 



1432 "c. 

 1399". 

 1372*- 







I T\ 



/// 





J 1 



TV 

 V 

 VI 



1338' 

 1312°- 

 1282° 







// 













ill/ 



1 / 



/ 



n 









if 



/ 



/ 









A 



2 









5 















T "n. Dirre/reHcE 



*>0 250 300 35C 



Diagram III. 

 Platinum in Air at i >i i 











iy 



w 



V 





_^*~vr 







/ 











^-*^m. 

















kTE 





#/ 











..K 





^ 





-X 1 





















I 



|4J2°C 















(I 



1399° ■• 















irr 



1372° • 















IV 



|338°- 















V 



1312". 















VI 



1282° ■■ 















w 



1254° - 















vnr 



1218° 















K 



1212°- 



POTENTIAL DlfFEFt£NC£ IN ttlLTS 



50 200 250 300 350 

























-nr 















IV 











_* — V 















__* — vn 







I 1295 °c 



IT 1225° - 















jrroei ' 



V 1011°. 

 Vr 548° • 

















100 200 300 4 



1TENTIAL DlFE£rt£NCE IN l/Oirs 



500 600 700 



ioatbd Platinum in Hydrogen, 





















■ 



Volts 

 3 100 



F » 



200 300 



/ r 









J 



)y. 



V 







^2&" 



















^'^ 





















lomrtiTHm or Linn 



J.ooo 100.0 



