arus.1 PORCELAIN ATR THERMOMETRY. 201 
Table 50. — Comparison of air thermometer and thermo-element. — Cont'd. 
Bulb No. 3; fto= 
26. 6"" 
Thermo 
•couple No. 36. 
H 
T 
Time. 
t 
C20 
Thg 
Txn 
Time. 
cm. 
°C. 
hours. 
°C. 
microvolts. 
°a 
oG. 
hours. 
847.9 
613 
.69 
.4 
8490 
732 
792 
.86 
898.7 
670 
.74 
.5 
8860 
755 
821 
.89 
928.7 
700 
.79 
.5 
9200 
777 
845 
.94 
965. 5 
741 
.83 
.7 
9710 
802 
878 
1.00 
1017.3 
797 
.00 
.9 
10110 
826 
906 
.07 
1078. 5 
863 
1.01 
20. 3 
10530 
850 
933 
.17 
1107.0 
896 
.08 
.4 
10760 
804 
950 
.22 
1150.6 
942 
.25 
27.4 
11570 
908 
1000 
.45 
1 179. 8 
973 
1.35 
27.6 
11630 
911 
1005 
1.50 
1187.8 
984 
.42 
.7 
11700 
915 
1010 
.53 
1198.8 
996 
.50 
.9 
11840 
924 
1017 
.61 
1202. 8 
1000 
.58 
28.2 
11970 
928 
1026 
.70 
1203. 3 
1000 
.67 
28.4 
12060 
934 
1030 
.75 
1202. 8 
1000 
.75 
Gas 
of fnrns 
ce shut off 1 
77 h 
1199.8 
997 
1.81 
| 28.9 
10780 
864 
951 
1.87 
1120.5 
916 
.87 
29.2 
9930 
815 
893 
.91 
1064. 3 
848 
.92 
29.3 
9130 
769 
838 
.95 
979.3 
756 
.97 
29.4 
8520 
733 
794 
.98 
934.8 
706 
2.01 
29.4 
7570 
675 
727 
2.03 
859.3 
626 
.07 
29. 5 
7050 
640 
686 
.06 
798.3 
561 
.13 
29.5 
6590 
610 
651 
.09 
721.9 
478 
.19 
29. 5 
6190 
584 
621 
.12 
678.4 
433 
.27 
29.5 
5170 
515 
538 
.21 
633.5 
385 
.35 
29.5 
4700 
476 
496 
.20 
591.7 
340 
.43 
29.4 
4310 
445 
461 
.30 
555.4 
302 
.53 
29.4 
3980 
421 
436 
.35 
522.7 
267 
2.63 
29.4 
3400 
372 
384 
2.44 
483.9 
227 
.74 
29.4 
3140 
348 
358 
.48 
462.9 
206 
.91 
29.4 
2850 
324 
332 
.54 
29.4 
2310 
274 
277 
.68 
29.4 
2000 
245 
246 
.79 
29.4 
1790 
220 
226 
.87 
29. 4 
16G0 
214 
214 
.93 
The following comparison (Table 51) of the data of thermo-element 
id air thermometer was made in the revolving muffle, described on page 
\1. The simple round bulb (No. 4), not provided with a central tube, 
iving been properly adjusted, the thermo-electric junction was placed 
jarly in contact with it. The table contains three independent series 
(855) 
