218 
MEASUREMENT OF HIGH TEMPERATURES. 
[BULL. 5' 
Table 58. — Comparison of air thermometer and thermo-couple. Series I. Method of cot 
stant pressure. 
Re-entrant bulb No. 1. vo = 
-280°. t 
= 19°. 6. 
Thermo-couple No. 37. 
Vi 
T, 
.Bo 
T 
Time. 
t 
do 
Time. 
Gas- 
cock. 
cc. 
OQ. 
cm. 
°C. 
hours. 
°G. 
microvolt. 
hours. 
152.0 
23.5 
76.36 
369 
2.73 
21.4 
3454 
2.70 
2 
157.0 
23.9 
76.36 
394 
2.92 
21.7 
3791 
2.88 
2 
1G0. 
23.8 
76.36 
411 
3. 13 
22.1 
4076 
3.17 
o 
161. 
23.9 
76.36 
416 
3.30 
22.4 
4109 
3.27 
2 
162.0 
23.9 
76.30 
422 
3.50 
22. 6 
4189 
3.45 
2 
203.2 
24.9 
76.36 
781 
3.98 
23.1 
8440 
3.90 
3 
206.6 
25.0 
76.36 
827 
4.12 
23.6 
9226 
4.03 
3 
207.2 
25.0 
76.36 
836 
4.25 
23.8 
9757 
4.20 
3 
209.0 
25.0 
76.36 
863 
4.45 
23.8 
9981 
4. 33 
3 
209.0 
25.0 
76.36 
863 
4.50 
24.6 
10126 
4.48 
3 
Table 59. — Comparison of air thermometer and thermo-couple. Series II. Method of con 
slant pressure. 
Re-entrant bulb No. 1. vo = 
= 280°. t 
= 18°.6. 
Thermo-couple No. 37. 
Vi 
T, 
Bo 
T 
Time. 
t 
do 
Time. 
Gas- 
cock. 
cc. 
0(7. 
cm. 
°a 
hours. 
°C. 
microvolt. 
hours. 
191.5 
25. 7 
76.01 
607 
1.09 
23.6 
6454 
1.09 
3 
197.2 
26.0 
76.01 
661 
1.28 
23,6 
7152 
1.20 
3 
203.7 
26.8 
76.01 
728 
1.73 
24.6 
7857 
1.33 | 3 
203.5 
27.0 
76.01 
724 
1.78 
24.9 
8276 
1.70 3 
203.4 
27.1 
76.01 
722 
1.83 
25.4 
8280 
1.75 3 
25.6 
8234 
1.83 
3 
209.0 
27.4 
75. 96 
788 
2.03 
26.1 
9404 
2.07 
3.5 
211.2 
27.5 
75.96 
818 
2.18 
26.6 
9699 
2.22 
3.5 
211.6 
2707 
75.96 
822 
2.35 
26.6 
9743 
2.30 
3.5 
218.4 
28.1 
75.96 
923 
2.60 
27.6 
11204 
2. 58 
3.7 
219.0 
28.2 
75.96 
932 
2.77 
27.6 
11318 
2.68 
3.7 
219. 
28.4 
75.96 
928 
2.92 
28.1 
28.6 
11319 
11354 
2.80 
3.00 
3.7 
3.7 
210.5 
27.9 
75.95 
803 
3. 20 
29.4 
8961 
3.25 
205.1 
27.6 
75.95 
737 
3.30 
29.1 
8040 
3.35 
201.0 
27.4 
75. 95 
690 
3.43 
29.3 
7175 
3.48 
&a 
190.0 
27.1 
75. 95 
583 
3.63 
29.4 
- 6122 
3.68 
o 
r ee 
O 
180.8 
26.8 
75.95 
511 
3.87 
29.4 
5179 
3.92 
167.5 
26.4 
75.95 
425 
4.17 
29.4 
4234 
4.20 
138.0 
25.5 
75.95 
289 
4.92 
28. 6 
2574 
4.98 
1 
132.9 
25.3 
75.95 
270 
5. 05 
28.6 
2528 
5.00 
i 
(872) 
