250 
BAROMETRIC OBSERVATIONS, 
OBSERVATIONS—Continued. 
Station. 
Date. 
Hour. 
No. of barometer. 
First reading. 
Attached thermome¬ 
ter. 
Air thermometer. 
Reading corr. for con¬ 
stant error, temp, 
and hor. variation. 
i Corrected mean ba¬ 
rometer reading. 
Wind. 
Clouds. 
Direction. 
Force. 
1854. 
Camp 99_ 
Jan. 16 
9 a. m _. 
783 
25. 120 
36. 7 
25. 009 
S.E. ... 
1 
Bivouac l 3 _ 
_do_ 
Sunset .... 
783 
24. 734 
24. 731 
S.W ... 
3 
Nimbus, 6.... 
Do ... 
Jan. 17 
Sunrise . .. 
783 
. 842 
26. 5 
. 794 
7.55 a. m.. 
783 
. 834 
33 
. 754 
Bivouac 2 3 _ 
_do_ 
3.30 p. m.. 
783 
24. 598 
40 
24. 594 
Do. 
Jan. 18 
Sunrise_ 
783 
. 531 
24. 5 
. 487 
Bivouac 3 3 _ 
_do_ 
Sunset - _.. 
783 
24. 036 
34. 3 
24. 037 
0 
Cumulus, 9_ 
Do. 
Jan. 19 
Sunrise_ 
783 
23. 768 
33 
23. 704 
9 a. m ... 
783 
. 776 
33. 5 
. 692 
S.W .. 
Cumulus, 9_ 
N.W. of summit 
_do_ 
12.30 p. m. 
783 
23. 932 
49 
Aztec Pass. 
Summit Aztec Pass 
_do_ 
4 p. m_ 
783 
23. 590 
29. 5 
23. 604 
Bivouac 4 3 _ 
_do_ 
Sunset_ 
783 
24. 126 
30. 5 
24. 134 
W.S.W. 
3 
Cumulus, 3_ 
Do. 
Jan. 20 
Sunrise_ 
783 
. 344 
13 
. 321 
N.W . . 
3 
9 a. m_ 
783 
. 416 
18. 6 
. 365 
W. 
3 
Bivouac 5 3 , Camp 
_do_ 
12.40 p. m. 
783 
24. 926 
21 
24. 928 
N. 
1 
103. 
Sunset .... 
783 
. 917 
13. 6 
. 962 
Do. 
Jan. 21 
Sunrise_ 
783 
. 860 
— 1.5 
. 872 
0 
9 a. m_ 
783 
25. 032 
21. 5 
. 975 
Do .. 
Jan. 22 
10 a. m_ 
783 
. 123 
37. 5 
25. 021 
Station A. 
_do_ 
10.20 a. m. 
783 
25. 100 
42. 9 
24. 981 
Station 3_ 
_do_ 
10.50 a. m_ 
783 
25. 037 
43. 8 
24. 913 
Station B__ 
_do_ 
11 a. m_ 
783 
25. 013 
46. 2 
24. 880 
Station C_ 
_do_ 
11.50 a. m_ 
783 
24. 946 
47. 7 
24. 841 
0 
Cirrus, 3_ 
Station 12_ 
_do_ 
1.10 p. in.. 
783 
24. 750 
48. 3 
24. 692 
Station D___ 
_do_ 
1.25 p. m.. 
783 
24. 742 
49. 5 
24. 693 
Station E_ 
_do_ 
1.48 p. m 
783 
24. 617 
46. 5 
Station F_ 
_ do _ 
2 p. ni _ 
783 
24. 645 
46. 2 
24. 613 
Station 14 . 
_ do _ 
3 p. m _ 
783 
24. 556 
45. 5 
0 
Cirro-cum., 9 . 
Station 15 _ 
_ do _ 
4 p. m _ 
783 
24. 424 
42. 2 
24. 420 
Station H .. . 
_ do _ 
4. 20 p. m 
783 
24. 546 
43 
24. 530 
Station K .. 
_ do _ 
4. 30 p. m_ 
783 
24. 502 
44. 5 
24. 496 
Station-17.. . 
_ do _ 
Sunset .... 
783 
24. 528 
45. 5 
24. 503 
Camp 104 ... 
_ do _ 
6 p. m __ 
783 
24. 561 
40. 5 
24. 542 
0 
Cirro-cum., 6. 
‘Do . 
Jan. 23 
9. 45 a. m 
783 
. 477 
44. 9 
. 354 
Station A _ 
_ do _ 
10 a. m_ . 
783 
24. 441 
48. 5 
24. 317 
Station B _ 
_ do _ 
10.20 a. m. 
783 
24. 511 
50. 8 
24. 370 
Station 2 .. 
_ do . _ 
10.40 a. m. 
783 
24. 458 
50. 9 
' 
Station 5 _ 
_ do _ 
11.15 a. m. 
783 
24. 206 
51. 5 
24. 084 
Summit Aztec Pass 
. do _ 
12 m. 
783 
24. 176 
55. 6 
24. 063 
Station 6, side of 
....do.... 
12 m _ 
cis. 
23. 957 
55 
23. 850 
E . 
1 
Cumulus, 8 _ 
mountain. 
Station 7 _ 
_ do _ 
12.15 p. m 
24. 110 
55 
24. 004 
Station 8 __ 
_ do _ 
12.40 p. m. 
784 
24. 235 
56. 8 
24. 145 
12.40 p. m. 
. 167 
56. 5 
. 
_ do _ 
1 . 10 p. m 
24. 224 
24. 153 1 
Camp 105 
24. 428 
53. 5 
‘Do . 
Jan. 24 
9 a. m _ 
784 
.429 
50. 8 
50 
.308 
E __ 
0. 1 
Cirro-cum., 8 . 
Station A_ 
....do... 
10 a. m_ - 
784 
24. 429 
51. 5 
.E_ 
2 
Cirro-cum., 7 . 
Station B_ > - 
24. 564 
52 
24. 461 1 
Station D._ 
_do_ 
12 m. 
24. 668 
53. 2 
53. 7 
24. 601 | 
S. E ... 
0. 2 
Cirro-cum., 5 . 
January 16.—Th 
■ee or four 
inches of snow fel 
last night; n 
lorning 
clear a 
nd calm. At 
10 a. 
m., wind rose 
from the south, followed hy a storm of sleet. At noon sleet ceased falling; wind blew from the southwest till sunset; : 
afterwards coining in gusts. 
January 22.—At sunrise, cirrus clouds covered the shy, hut soon disappeared ; the day was clear and without wind. 
January 23.—10 40 a. m., cirrus clouds again appeared, with a light breeze from the east. The day was warm, with an 
easterly breeze. Light cirrus clouds frequently formed, changed into cumulus, and disappeared. In the evening, there 
was the same variable sky. A few stars occasionally appeared for a moment, and were soon again veiled in mist. At 9 p. 
m., the atmosphere became saturated with moisture, and distilled a few drops of rain. 
January 24.—Cirro-cumulus clouds were floating in the sky during the day. The breeze, at night, gathered strength 
and threatened a storm, although the clouds disappeared. 
