112 A MANUAL FOR NORTHERN WOODSMEN 
I — Barometer Elevation — continued. 
Reading 
Inches 
Elevation 
Feet 
Difference 
for .01 inch 
Feet 
Reading 
Inches 
Elevation 
Feet 
Difference 
for .01 inch 
Feet 
26.8 
3073 
—10.1 
28.7 
1207 
—9.5 
26.9 
2972 
-10.1 
28.8 
1112 
—9.4 
27.0 
2871 
—10.1 
—10.0 
28.9 
1018 
—9.4 
—9.4 
27.1 
2770 
29.0 
924 
27.2 
2670 
—10.0 
—10 0 
29.1 
830 
—9.4 
—9.3 
27.3 
2570 
— 9.9 
29.2 
736 
—9.3 
27.4 
2470 
29.3 
643 
27.5 
2371 
— 9.9 
— 9 9 
29.4 
550 
—9.2 
—9.2 
27.6 
2272 
— 9 8 
29.5 
458 
—9.2 
27.7 
2173 
— 9 8 
29.6 
366 
—9.2 
27.8 
2075 
— 9 7 
29.7 
274 
—9.1 
27.9 
1977 
— 9.7 
29.8 
182 
—9.1 
28.0 
1880 
— 9 7 
29.9 
91 
—9.1 
28.1 
1783 
— 9.7 
30.0 
00 
—9.0 
28.2 
1686 
— 9 6 
30.1 
— 91 
—9 0 
28.3 
1589 
— 9 6 
30.2 
181 
—9.0 
28.4 
1493 
— 9 5 
30.3 
271 
—9.0 
28.5 
1397 
— 9.5 
30.4 
361 
—9.0 
28.6 
1302 
30.5 
—451 
II — Correction for Temperature in Degrees Fahrenheit 
t -j- t' 
c: 
t+t' 
C. 
t+t' 
C. 
0° 
— 0.1025 
60 
— 0.0380 
120 
+ 0.0262 
5° 
— 0.0970 
65 
— 0.0326 
125 
+ 0.0315 
10° 
—0.0915 
70 
— 0.0273 
130 
+ 0.0368 
15° 
— 0.0860 
75 
— 0.0220 
135 
+ 0.0420 
20° 
— 0.0806 
80 
— 0.0166 
140 
+ 0.0472 
25° 
— 0.0752 
85 
— 0.0112 
145 
+ 0.0524 
30° 
— 0.0698 
90 
— 0.0058 
150 
+ 0.0575 
35° 
— 0.0645 
£5 
— 0.0004 
155 
+ 0.0626 
40° 
— 0.0592 
100 
+ 0.0049 
160 
+ 0.0677 
45°' 
— 0.0539 
105 
+ 0.0102 
165 
+ 0.0728 
50° 
— 0.0486 
110 
+ 0.0156 
170 
+ 0.0779 
55° 
—0.0433 
115 
+ 0.0209 
175 
+ 0.0829 
• CO 3 
— 0.0380 
120 
+ 0.0262 
180 
+ 0.0879 
