202 
MEASUREMENT OF HIGH TEMPERATURES. 
[BULL. 54. 
of measurements, and nomenclature used is identical with that of the 
foregoing table: 
Table 51. — Comparison of air thermometer and thermo-couple. 
Bulb No. 
i. 
Thermo-couple J 
'0. 37. 
II 
T 
Time. 
t 
e 
Thg 
2V„ 
Time. 
(a) 
[7) U =10.74 r »'] 
cm. 
°C. 
hov/rs. 
°a 
microvolts. 
°G. 
°<7. 
hours. 
82. 2 
1115 
1. 57 
25.3 
12920 
980 
1082 
1. 53 
88.9 
1238 
1.85 
25. 8 
14780 
1073 
119(3 
1. 73 
89.2 
1244 
1.93 
27.3 
15430 
1102 
1233 
1.90 
89.3 
124 G 
2. 03 
27.3 
15690 
1115 
1249 
2.05 
(6) 
[7io= 14.70™] 
62. G 
923 
2 ''7 
26.3 
10480 
8.10 
930 
2.22 
04. 2 
954 
2.35! 
2G. 5 
11020 
878 
972 
2.33 
72. 5 
1118 
2 5° 
27.0 
12250 
944 
1045 
2.47 
7G. 6 
1202 
2. G2 
27.3 
14000 
1034 
1150 
2.60 
77.3 
1218 
2. 65 
27.8 
14760 
1072 
1195 
2.72 
78. G 
1244 
2.73 
28.2 
15060 
1085 
1213 
2.82 
79.1 
1254 
2.80 
28.2 
14970 
1081 
1206 
2.87 
79.1 
1254 
2.82 
28.5 
14870 
1075 
• 1201 
2. 92 
78.8 
1248 
2.85 
78.4 
1240 
2.92 
( 
3ras of furnace shut c 
ff. 
72.8 
1126 
3.03 
29.0 
12930 
980 
1085 
3.03 
6G.8 
1000 
3.12 
29.5 
10710 
861 
945 
3. 17 
62.8 
927 
3.22 
29.6 
10090 
827 
904 
3.20 
57.3 
819 
3.30 
30.0 
9040 
765 
833 
3.32 
51.4 
704 
3.47 
30.6 
7690 
083 
735 
3.48 
46.3 
603 
3.68 
31.3 
6490 
604 
644 
3. 08 
42.0 
519 
3.92 
31.8 
5340 
524 
551 
3.92 
36.9 
422 
4.27 
31.8 
4130 
430 
449 
4.27 
32. 5 
337 
4. C8 
31.8 
3140 
350 
359 
4.70 
24.8 
188 
[ho= 15.68='''] 
77.0 
1115 
2.00 
29.0 
14170 
1042 
1160 
2.00 
77.4 
1122 
.03 
29.0 
14270 
1046 
1166 
2.03 
68.5 
957 
.18 
29.0 
10770 
865 
948 
2.17 
52.7 
659 
.53 
29.0 
7090 
644 
690 
2.50 
The results of these two tables, 50 and 51, may best be compared 
graphically by regarding the various values of temperature as functions 
of time. This has been done in the chart, Fig. 39. The curves a, b, i 
correspond, respectively, to T, T 2n , and T hg of Table 50; the curves hM 
T hg , of Table 51, respectively ; the curves /, <j, and m, n to I 
(850) 
i to T, T m , 
