TABLE OF ALTITUDES, 
613 
List of Altitudes of the line from Columbia Barracks to Fort Okinakane. 
Camp. 
Barometer. 
Thermometer. 
Altitude. 
o 
Feet. 
1 
29. 828 
74.6 
157.2 
2 
29.706 
79.3 
276.7 
3 
29.728 
78.6 
255. 5 
4 
29.410 
72.0 
553. 5 
5 
29.251 
68.5 
702. 7 
6 
29. 535 
59.3 
430. 0 
7 
29. 549 
59.7 
417. 0 
8 
29.680 
56.9 
312.8 
9 
29. 337 
60.0 
615.4 
10 
29.167 
58.7 
782. 5 
11 
27. 053 
57.7 
2840. 1 
12 
26. 834 
53.3 
3049. 0 
13 
25. 968 
48.0 
3923. 7 
14 
27.747 
53.0 
2430. 8 
15 
27. 930 
66.0 
1980. 3 
16 
28.122 
65. 0 
1789. 1 
17 
27.222 
55.4 
2662. 5 
18 
27. 725 
58.7 
2168.7 
19 
28. 594 
63.8 
1331.4 
20 
27. 968 
55. 3 
1921.7 
21 
28.131 
63.5 
1777. 6 
22 
28. 103 
51.4 
1782. 3 
23 
27. 678 
51.7 
2198. 6 
24 
28.172 
61.5 
1732. 4 
25 
29.199 
74. 5 
756.5 
26 
28. 964 
61.2 
968.7 
27 
29.163 
53. 0 
781.6 
28 
29. 289 
59.2 
754. 1 
29 
29. 209 
54. 0 
738.8 
30 
29. 102 
57.9 
834.7 
31 
26. 987 
43.7 
2804. 5 
32 
27. 895 
40.0 
1960. 4 
33 
27. 612 
56.6 
2275. 6 
34 
28. 888 
51.7 
1048.8 
35 
29. 322 
53.5 
624. 3 
36 
29.198 
59.0 
745.2 
37 
29.125 
53.5 
808. 5 
38 
29.122 
51.7 
811.1 
ERE AT A. 
Iq table of latitudes and longitudes, page 456, for latitude of Fort Colville, 46° 36' 16", read 48° 36' 16". 
In table on page 568, for mean difference of readings of wet and dry thermometers, August, 1854, for 15°.7, read 16°.7. 
