Date.

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of March 1866.

Daily Means, &c. of the Observations and of the Hygrometrical elements dependent thereon.-(Continued.)

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All the Hygrometrical elements are computed by the Greenwich Constants.

Meteorological Observations.

xix

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of March 1866.

Hourly Means, &c. of the Observations and of the Hygrometrical elements dependent thereon.

The Mean Height of the Barometer, as likewise the Dry and Wet Bulb Thermometer Means are derived from the observations made at the several hours during the month.

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

in the month of March 1866.

Hourly Means, &c. of the Observations and of the Hygrometrical elements dependent thereon.-(Continued.)

All the Hygrometrical elements are computed by the Greenwich Constants.

Abstract of the Results of the Hourly Meteorological Observations taken at the Surveyor General's Office, Calcutta,

S. W.
S. & N.
N. & W.
S. & N.
S. & S. W.

S. & W.
S. & W.

S. W. & W.

S. & N.

S. &. S. W.
W. & S. & S. W.
S.W. & W. & N. W.
W. & S. W. & S.

Clear. Scuds from S.between 4 &7A.M.
Clear to 4 A. M., scatd. i to 9 A. M.,
clear afterwards.

Clear, slightly foggy from 4 to 6 A. M.
Clear, slightly foggy from 3 to 8 A. M.
Clear, slightly foggy at 4 A. M.

Clear.

Clear to 2 A. M., overcast to 6 A. M.,
clear afterwards.

Clear, slightly foggy at 1 A. M.
Clear, slightly foggy from 3 to 5 A. M.
Scatd. clouds to 8 A. M., clear after-
wards.

Clear to 7 A. M. i to 7 P. M., clear
afterwards.

\i to 8 P. M., clear afterwards.
\i to 8 A. M., clear afterwards.
Clear, foggy from 4 to 7 A. M.

Clear to 1 P. M., scatd. i to 6 P. M.,
clear afterwards.

Scatd. i to 9 A. M., clear afterwards.
Clouds of different kinds.
Clear.

S. W. & W. & S.

Clear.

24 140.5

25 141.0

S. & S. W.

Clear to 6 A. M., scatd. i to 5 P. M., overcast afterwards. Thin rain Lightning. and Thunder at 10 & 11 P. M. Overcast to 6 A. M., scatd. i to 8 P. M. over cast afterwards Thin rain at 11 P. M.

i Cirri, i Strati, i Cumuli,i Cirro-strati, i Cumulo strati,i Nimbi, i Cirro cumuli.

Abstract of the Results of the Hourly Meteorological Observations

taken at the Surveyor General's Office, Calcutta,