MTEftMlNAtlON* OlT MEioMig; 
213 
Table II. —Correction for Temperature of Intermediate Air. 
Mean tempe- 
Mean tempe- 
Mean tempe¬ 
Mean tempe¬ 
rature of in¬ 
termediate 
Multiplier. 
rature of in¬ 
termediate 
Multiplier. 
rature of in¬ 
termediate 
Multiplier. 
rature of in¬ 
termediate 
Multiplier. 
air. 
air. 
air. 
air. 
o 
0 
0 
0 
20 
21 
0-9734 
0-9756 
37 
38 
i-oiii 
1*oi33 
54 
55 
1-0488 
1-0511 
70 
71 
1*0844 
1-0866 j 
22 
0-9778 
39 
1-0155 
56 
I-053J 
72 
1-0888 
23 
0-9801 
40 
1-0177 
57 
1-0555 
73 
1-0911 
24 
0-9823 
41 
1*0199 
58 
1-0577 
74 
1-0913 
25 
0-9845 
0-9867 
42 
I*0222 
59 
1-0599 
75 
1-0955 
26 
43 
1-0244 
60 
1-0622 
76 
1-0977 
27 
0-9889 
44 
1-0266 
61 
1-0644 
77 
1-0999 
28 * 
0-9912 
45 
1-0288 
62 
i- 0666 
78 
1-1022 
29 
0*9914 
0-9956 
46 
1-0311 
63 
1-0688 
79 
1-1044 
30 
47 
1*0333 
64 
1-0711 
80 
1•1066 
3 1 
0-9978 
48 
1-0355 
65 
1-0733 
81 
I•1088 
3 2 
I -oooo 
49 
1-0377 
66 
1*0755 
82 
I-IIII 
33 
I*0022 
50 
1*oi99 
67 
1-0777 
83 
1-H33 
34 
1-0044 
5i 
1-0422 
68 
1-0799 
84 
1-1156 
35 
I-0066 
52 
1-0444 
1-0466 
69 
1-0822 
85 
1-1178 
36 
1-0088 
53 
When the boiling point at the upper station alone is observed by the 
traveller, he sometimes has the opportunity of availing himself of some 
established observatory at no great distance, to serve as the lower station. 
A memoir by E. Scott, f.r.s., late Secretary to the Meteorological Office, 
published with a map in Vol. XI. of the f Journ. Eoy. Meteor. Soc./ 
shows the distribution of stations past and present, over the globe. But 
these are continually changing, so the intending traveller should seek the 
latest information at the Meteorological Office, 63, Victoria Street, S.W. 
Usually, however, the traveller has no option but to take the mean 
height of the barometer, reduced to the sea-level, in the district in which 
he is, and for the same season of the year, and to use this in the place of 
observations at a lower station. He will find what he wants in the 
maps of mean barometric pressure, reduced to sea-level, that are given 
in most of the physical atlases ( f Bartholomew’s Physical Atlas/ Vol. 
III., is the most recent of these), and also in ‘ Eeport on the Scientific 
Eesults of the Voyage of the Challenger, during the years 1873-76/ 
‘ Physics and Chemistry/ Vol. II. (The section of this volume on 
