Himalayan Journals — Volume 2 / Or, Notes of a Naturalist in Bengal, the Sikkim and Nepal Himalayas, the Khasia Mountains, etc.

by Joseph Dalton Hooker

JULY, 1848

No. of
Observations 7 23 27 22 20 26 12 11 25
Hour 1 a.m. 8 9 10 11 Noon 1 p.m. 2 3
Barom.
corrected 22.877 .882 .884 +.899 .899 .884 .876 .866 .852
Temp. Air 59.6 62.1 62.6 63.5 64.1 65.0 64.1 64.4 64.8
D.P. 58.9 60.6 61.3 61.7 62.3 63.1 61.7 61.0 62.6
Diff. 0.7 1.5 1.3 1.8 1.8 1.9 2.4 3.4 2.2
Tens. of
Vapour .504 .534 .546 .554 .565 .580 .566 .541 .571
Weight of
Vapour 5.65 6.03 6.10 6.12 6.27 6.44 6.13 6.00 6.32
Humidity .988 .950 .960 .945 .945 .940 .923 .892 .930
Press. of
Dry Air 22.373 .348 .338 .345 .334 .304 .310 .325 .281

No. of
Observations 23 13 10 6 6 22 6 6 19
Hour 4 p.m. 5 6 7 8 9 10 11 M.n.
Barom.
corrected 22.846 -.840 .845 .853 .867 .878 .885 +.887 .887
Temp. Air 64.1 64.7 63.7 62.7 61.0 60.7 60.5 60.2 59.8
D.P. 61.7 64.0 61.5 61.1 59.5 59.4 59.5 59.2 59.1
Diff. 2.4 0.7 2.2 1.6 1.5 1.3 1.0 1.0 0.7
Tens. of
Vapour .554 .597 .549 .542 .515 .512 .514 .508 .507
Weight of
Vapour 6.13 6.62 6.12 6.03 5.74 5.72 5.75 5.70 5.68
Humidity .924 .978 .928 .948 .952 .960 .968 .965 .975
Press. of
Dry Air 22.292 -.243 .296 .311 .352 .366 .371 .379 +.382

AUGUST

No. of
Observations 15 26 28 28 24 23 21 21 21
Hour 1 a.m. 8 9 10 11 Noon 1 p.m. 2 3
Barom.
corrected 22.909 .904 .915 +.917 .915 .905 .898 .884 .873
Temp. Air 59.8 62.1 63.1 64.3 64.7 64.7 65.3 65.0 64.8
D.P. 59.5 61.5 61.9 62.7 63.1 63.4 63.3 63.4 63.1
Diff. 0.3 0.6 1.2 1.6 1.6 1.3 2.0 1.6 1.7
Tens. of
Vapour .514 .549 .558 .572 .580 .586 .584 .586 .579
Weight of
Vapour 5.70 6.13 6.20 6.35 6.42 6.50 6.48 6.50 6.43
Humidity .992 .980 .962 .950 .948 .958 .940 .950 .943
Press. of
Dry Air +22.395 .355 .357 .345 .335 .319 .314 .298 .294

No. of
Observations 19 19 19 19 19 19 19 19 19
Hour 4 p.m. 5 6 7 8 9 10 11 M.n.
Barom.
corrected 22.855 -.853 .863 .865 .878 .890 +.823 .892 .889
Temp. Air 63.9 63.2 62.3 61.6 61.1 60.7 60.3 60.1 60.0
D.P. 62.4 61.7 60.8 60.4 60.2 60.0 59.7 59.7 59.4
Diff. 1.5 1.5 1.5 1.2 0.9 0.7 0.6 0.4 0.6
Tens. of
Vapour .568 .554 .538 .531 .527 .523 .518 .517 .513
Weight of
Vapour 6.30 6.15 6.00 5.92 5.88 5.85 5.78 5.79 5.73
Humidity .952 .952 .952 .952 .970 .976 .980 .988 .980
Press. of
Dry Air -.287 .299 .325 .334 .351 .367 .375 .375 .376

DECEMBER

No. of
Observations 28 29 28 24 23 23 23 23 23
Hour 8 a.m. 9 10 11 Noon 1 p.m. 2 3 4
Barom.
corrected 23.000 .013 +.018 .009 22.995 .980 .962 .947 -.944
Temp. Air 59.2 60.1 60.8 61.6 62.4 62.7 62.8 62.3 61.8
D.P. 58.1 58.5 59.5 60.0 60.5 60.5 60.4 60.0 59.9
Diff. 1.1 1.6 1.3 1.6 1.9 2.2 2.4 2.3 1.9
Tens. of
Vapour .492 .497 .514 .523 .533 .532 .531 .522 .521
Weight of
Vapour 5.50 5.57 5.77 5.83 5.93 5.92 5.90 5.83 5.82
Humidity .968 .945 .958 .950 .942 .942 .925 .924 .940
Press. of
Dry Air 22.508 .516 .504 .506 .462 .448 .431 .425 -.423

No. of
Observations 19 19 20 21 22 24 24 23
Hour 5 p.m. 6 7 8 9 10 11 M.n.
Barom.
corrected 22.944 .948 .958 .975 .986 +.991 .989 .994
Temp. Air 60.3 59.4 58.7 58.2 57.8 57.4 57.0 56.7
D.P. 58.6 58.4 57.4 57.0 56.6 56.4 55.9 55.4
Diff. 1.7 1.0 1.3 1.2 1.2 1.0 1.1 1.3
Tens. of
Vapour .498 .496 .479 .473 .467 .463 .456 .449
Weight of
Vapour 5.58 5.58 5.60 5.33 5.25 5.23 5.15 5.07
Humidity .940 .968 .960 .962 .960 .968 .962 .927
Press. of
Dry Air .446 .452 .479 .502 .519 .528 .533 +.545

OCTOBER (22 days)