TABLES. 
Page. 
Table 1. List of thermo-couples 69 
2. Constancy of temperature in the mercury apparatus 70 
3. Constancy of temperature in the zinc apparatus 72 
4. Constancy of temperature ; zinc apparatus; time series 73 
5. Constancy of temperature; zinc apparatus ; time series 74 
6. Values of eW 78 
7. General summary of results 79 
8. Equivalent thermo-electromotive forces 80 
9. Comparison of standard elements 101 
10. Temperature coefficient of Clark's cells 102 
11. Temperature coefficient of siphon Daniell standard 102 
12. Constancy of temperature along the axis of boiling tube ; steam.. . 105 
13. Constancy of temperature along the axis of boiling tube ; mercury. 106 
14. Constancy of temperature along the axis of boiling tube; sulphur. 107 
15. Constancy of temperature along the axis of boiling crucible ; zinc . . 1 09 
16. Calibration of thermo-couples Nos. 17, 18, 22, 35, 36 110 
17. Values of e 2 o for thermo-couples Nos. 17, 18, 22, 35, 36 114 
18. Crucible (fig. 13) charged with bismuth 117 
19. Crucible (fig. 13) charged with antimony 117 
20. Crucible (fig. 13) charged with cadmium 118 
21. Constancy of temperature in boiling tubes; sulphur 119 
22. Available substances for vapor baths 120 
23. Calibration in zinc vapor _ 122 
24. Calibration in zinc vapor 123 
25. Calibration in hot tin _ 123 
26. Calibration in bismuth 123 
27. Calibration in antimony 124 
28. Thermo-electric datum for temperatures above the melting point 
of platinum 125 
29. Density of platinum alloys 129 
30. Electrical resistance of platinum alloys ; rods 132 
31. Electrical resistance of platinum alloys ; wires 134 
32. Thermo-electrics of platinum alloys 136 
33. Temperature coefficient of platinum alloys 139 
34. Constants of platinum alloys; digest 143 
35. Electrical tests for purity 147 
36. Electrical tests for purity 147 
37. Electrical tests for purity 147 
38. Electrical tests for purity 148 
39. Electrical tests for purity 148 
40. Constants of the linear relation (initial tangent) between electrical 
conductivity and temperature coefficient of platinum alloys 155 
(665) 11 
