324 C. G. KNOTT AND J. G. MACGREGOR ON THE 
In Table I. we do not give the observed deflections of the thermometric circuit, — 
but the averages of contiguous observed deflections, which are therefore the 
deflections corresponding in time to those of the thermo-electric circuit. The 
former are contained in the column headed M-N Deflections, the latter in that 
headed N-C Deflections (observed). The order of the letters in these headings 
indicates the arrangement of the wires, &c., in circuit. In the thermometric 
circuit this order was: M wire, N wire, galvanometer ; in the other: N wire, 
charcoal, galvanometer ; the charcoal being joined to the same galvanometer 
terminal in the one circuit as the N wire in the other. The column headed 
Temperature gives the temperatures of the heated junction as calculated from 
the deflections of the M-N circuit, by means of the observations contained in 
Table IJ. The other junctions had throughout the temperature 13°6° C. 
The column headed N-C (calculated) will be explained below. 
TABLE I. 
N-C Deflections. 
M-N Temperatur 
Defiections. | ane 
Observed. Calculated. 
+1843 2043. C, +301 263°'0 
179°5 355'5 285 255°3 
165°7 329 251 " 2323 
156 310°3 230 216-4 
149 297 215 205:2 
1345 269°6 187 182-7 
1 a4 25:5 174:°5 1713 
T20°7 2437 164 161°9 
113°5 232-2 152 152°8 
107°3 218°3 143 142 
102 208°3 135 1343 
91 187°6 118-5 1186 
84:7 176 110 110 
79 165°2 101°5 102 
64 136°8 81°5 81:3 
59:7 128.8 76°5 TOR 
48 1066 60°5 60°5 
40°3 92 50-5 50°6 
36 83:7 45'5. 45. 
28 68°8 34:5 35:1 
22°5 58°5 2D 28°4 
17 48 20 21°6 
13 40°3 15 16% 



