A.RUS.J 
PORCELAIN AIR THERMOMETRY. 
221 
'ABLE 62.— Comparison of air thermometer and thermo-couple. Series I. Method of con- 
stant pressure. 
Re-entrant bulb No. 2. 
vo=28G. 
«=16°. 
Tl 
No. 
ermo-couples Nos. 
37, 39. 
Yi 
Tx 
m 
T 
Time. 
t 
e-zvi 
Time. 
cc. 
°<7. 
cm. 
°o. 
hours. 
oO. 
microvolt. 
hours. 
154.5 
21.6 
77.17 
359 
1.15 
37 
20.0 
3521 
1.22 
157.4 
21.7 
77.17 
373 
1.28 
37 
20.1 
3642 
1.32 
158.8 
22.0 
77.17 
379 
1.38 
37 
20.6 
3747 
1.43 
160.1 
22.2 
77.17 
385 
1.52 
37 
20.8 
3780 
1.57 
161.8 
22.5 
77. 17 
393 
1.85 
39 
21.1 
3837 
1.80 
162.3 
22.6 
77.17 
396 
1.97 
39 
21.2 
3872 
1.90 
202.9 
23.8 
77.13 
703 
2.52 
39 
22.6 
7742 
| 2.42 
205.0 
24.4 
77.13 
733 
2.80 
39 
22.8 
8118 
2.58 
206.2 
25.0 
77.13 
744 
2.95 
39 
23.4 
8408 
! 2.88 
208.0 
26.0 
77. 13 
758 
3.23 
37 
24.6 
8791 
3.37 
208.7 
26.5 
77.13 
762 
3.50 
37 
25. 1 
8795 
3.55 
208.9 
26.6 
77. 13 
763 
3.63 
37 
25.6 
8799 
3.68 
216.0 
26.5 
' 77.14 
866 
3.90 
37 
26.4 
10644 
3.98 
219.2 
27.1 
. 77.14 
910 
4.07 
37 
26.6 
11000 
4.13 
220.2 
27.1 
77.14 
928 
4.19 
37 
27.0 
11140 
4.23 
220.8 
27.1 
77.14 
938 
4.57 
39 
27.7 
11088 
4.60 
220.5 
27.2 
77.14 
931 
4.65 
39 
27.9 
11063 
4.67 
220.4 
223. 8 
27.4 
28.8 
77.14 
77.16 
927 
972 
4.75 
5. 32 
39 
28.8 
12125 
5.22 
224.7 
28.5 
77.16 
991 
5.50 
39 
29.1 
12113 
5.40 
225.8 
28.1- 
77.10 
1019 
5.65 
39 
29.5 
12476 
5.62 
223.3 
28.7 
77.16 
963 
6. 10 
37 
30.2 
11830 
6.05 
222.6 
28.7 
77.16 
949 
6.21 
37 
30.4 
11552 
6.17 
222.2 
28.1 
77.18 
952 
6.30 
37 
30.6 
11400 
6.25 
215.2 
27.7 
77.18 
842 
6.63 
37 
30.6 
11057 
6.51 
210. 4 
27. 3 
77.18 
779 
6.73 
37 
30.6 
9204 
6.70 
205.9 
27.2 
77.18 
724 ! 
6. 82 
37 
30.6 
8500 
6.77 
200.5 
27.0 
77.18 
665 
6.93 
37 
30.8 
7896 
6.86 
194. 4 
26.8 
77. 18 
600 ' 
7.08 
37 
30.8 
7131 
6.98 
189.9 
26.7 
77. 19 
567 1 
7.18 
37 
30.7 
6319 
7.13 
185. 
26.5 
77.19 
529 
7.30 
37 
30.6 
5821 
7.21 
180.0 
26.4 
77.19 
493 ! 
7.43 
37 
30. 5 
5398 
7.35 
175.2 
26.4 
77.19 
460 
7. 54 
37 
30.4 
5032 
7.44 
170.1 
26.1 
77.19 
430 
7.67 
37 
30.1 
4138 
7.73 
165.2 
26.0 
77.19 
402 
7. SO 
37 
30.0 
3853 
7.83 
159.8 
25.7 
77.19 
375 
7.92 
37 
29.8 
3560 
7.96 
154. 7 
25.7 
77.19 
351 
8.04 
37 
29.8 
3291 
8.08 
150.1 
25.7 
77.23 
330 
8.17 
(875) 
