Thermo-electric Powers of Metals and Alloys. 107 



No. 2. 

 Platinum-Lead Couple. (Callendar's Platinum Wire.) 



One junction at 0° C. ; the other a,tpt°. 



E M F I Temperature pt° 

 r q ' i" in degrees of 



• n r> <s „•*. Standard Platinum 

 in U.Gr.S. units. m, , 



.thermometer. 



E.M.F. 



of Couple 



in C.Gr.S. units. 



Temperature pt° 



in degrees of 



StandardPlatinum 



Thermometer. 



-43550 

 -38530 

 -34950 

 -29320 

 -24840 

 -20360 

 -16440 

 -11550 



- 8130 



- 5270 



- 4740 



- 2650 

 + 1740 

 + 4620 

 + 7060 



+ 100-2 

 + 91-0 

 + 83-7 

 + 73-7 

 + 64-3 

 + 54-5 

 + 45-5 

 + 34-3 

 + 24-7 

 + 16-5 

 + 15-5 

 + 9-0 



- 6-4 



- 16-2 



- 28-0 



+ 9610 

 +10810 

 + 11910 

 +12370 

 +12770 

 +12540 

 +11820 

 + 9090 

 + 5670 

 + 2280 



- 1490 



- 7470 

 -10810 

 -16140 



o 



- 441 



- 530 



- 62-4 



- 72-2 



- 81-1 



- 91-6 

 -105-8 

 -122-9 

 -137-8 

 -1519 

 -164-5 

 -178-8 

 -188-0 

 -195-5 



No. 3. 

 Gold-Lead Couple. 



One junction at 0° O. ; the other at pt°. 



E.M.F. 



of Couple 

 in C.Gr.S. units. 



Temperature pt° 

 in degrees of 



StandardPlatinum 

 Thermometer. 





E.M.F. 



of Couple 

 in C.Gr.S. units. 



Temperature pt° 1 



in degrees of 



Standard Platinum 



Thermometer. 



+ 11600 

 + 10330 

 + 9090 

 + 7670 

 + 6675 

 + 5380 

 + 4430 

 + 3820 

 + 3440 

 + 2340 

 + 2260 

 + 1510 

 4- 1390 

 + 1360 

 + 940 



+ 99°9 

 + 90-2 

 + 81-0 

 + 70-8 

 + 60-5 

 + 51-0 

 + 41-6 

 + 39-9 

 + 33-2 

 + 25-1 

 + 24-4 

 + 15-8 

 + 15-5 

 -1- 12-3 

 + 10-9 



- 830 



- 840 



- 2020 



- 3340 



- 4970 



- 5680 



- 6940 



- 7370 



- 8690 

 -10160 

 -11560 

 -12420 

 -13020 

 -13040 

 -13420 



o 



- 71 



- 8-5 



- 21-3 



- 37-7 



- 55-8 



- 65-4 



- 80-8 



- 89-0 

 -108-1 

 -134-1 

 -159-8 

 -180-7 

 -192-7 

 -196-3 

 -205-4 





