116 



Profs. Dewar and Fleming on the 



No. 20. 

 (Commercial) Bismuth-Lead Couple. (No. 1.) 



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



E.M.F. 



of Couple 



in C.G.S. units. 



Temperature pt° 



in degrees of 



Standard Platinum 



Thermometer. 



E.M.F. 



of Couple 

 in C.G.S. units. 



Temperature pt° 



in degrees of 



StandardPlatinum 



Thermometer. 



-579100 

 -539720 

 -458330 

 -388860 

 -334700 

 -272930 

 -212460 

 -152140 

 -100400 



- 66460 



- 64720 



- 43120 



- 40720 

 + 11870 

 + 27780 

 + 53090 



+ 1001 

 + 94-3 

 + 84-0 

 + 740 

 + 66-3 

 + 55-9 

 + 462 

 + 34-2 

 + 24-1 

 + 165 

 + 15-6 

 + 9-8 

 + 91 



- 70 



- 14-8 



- 28-5 



+ 64580 



+ 63600 

 Balancing posi 



+ 52480 

 Balancing posi 



+ 47810 



+ 33120 



+ 29640 



+ 2700 



- 35570 



- 70960 

 -105760 

 -130870 

 -159240 

 -167740 

 -187370 



O 



- 44-4 



- 521 

 tion variable. 



- 642 

 tion variable. 



- 70-8 



- 81-0 



- 87-9 

 -102-2 

 -119-5 

 -135-2 

 -153-3 

 -1653 

 -178-7 

 -186-9 

 -195-5 



No. 21. 

 (Commercial) Bismuth-Lead Couple. (No. 2.) 



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



E.M.F. 



of Couple 

 in C.G.S. units. 



Temperature pt c 



in degrees of 



Standard Platinum 



Thermometer. 



E.M.F. 



of Couple 



in C.G.S. units. 



Temperature pt° 



in degrees of 



StandardPlatinum 



Thermometer. 



-664150 

 -612480 

 -533680 

 -457460 

 -388400 

 -329450 

 -287060 

 -191070 

 - 136130 



- 86090 



- 80600 



- 47690 



- 45050 

 + 37150 

 + 70020 



+ 100°0 

 + 92-4 

 + 83-0 

 + 73-2 

 + 632 

 + 55-0 

 + 48-8 

 + 33-9 

 + 25-9 

 + 16-5 

 + 15-6 

 + 9-7 

 + 91 



- 8-2 



- 16-2 



+ 113070 

 + 153140 

 + 168800 

 + 184340 

 +189780 

 + 190120 

 +201840 

 +200110 

 + 192340 

 + 174830 

 + 153910 

 + 140310 

 + 117460 

 + 108890 

 + 87350 



o 



- 28-4 



- 430 



- 510 



- 616 



- 689 



- 81-0 



- 858 



- 99-7 

 -1150 

 -132-6 

 -1520 

 -163-2 

 -1774 

 -184-7 

 - 195-5 



