616 Abstract of a Meteorological Journal, (Dec. 1833. 
reward, while they have deprived the scientific of a most valuable and 
will digested register of meteorological data. It would be impossible 
to devote space for their entire publication in the pages of this jour- 
nal, but such an abstract as we have gleaned from many similar tables 
‘on former occasions, and which will suffice for most purposes of a gene- 
ral nature, especially for that we havehitherto kept in view,—the fixing 
of the constants of diurnal and monthly range of heat and pressure for 
as many points as possible on the continent of India,—we now with 
permission present to our readers : prefixing Captain Grrarp’s account 
of his instruments and of his method of observing. 
““With regard to the tables which I now transmit, I beg to state that, generally 
speaking, the means of the observations, whether of the barometer or thermome- 
ters, attached or inside, and detached or outside, in the air and shade, taken during 
a march or halt or temporary intermediate place of encampment, are deduced from 
the highest during the day, and lowest the following morning, which will furnish a 
correct mean of the place for the day. The attached or inside thermometer at 
Kotgarh was rather open to a westerly aspect, the observations being taken in a 
room of the house to the westward, thereby shewing a somewhat higher temperature 
than if taken ina room towards the north. This was merely done for the sake of 
convenience. The detached or outside thermometer was suspended on a pole 
fixed in the ground for this special purpose, apart from the house, from day-break 
or early in the morning, to the north-west side for nearly half, and to the N. 
N. E. side for the remainder of the day, inthe air and shade, to obviate as 
much as possible the sudden effects arising from reflection from the earth and the 
sun’srays in clear, settled, and hot weather; which would thereby indicate a high.. 
er, and consequently somewhat a more incorrect temperature of the air, than it 
otherwise ought to do, had it been hung at a considerable distance from any build- 
ing better situated and free from the influence of all or any degree of reflection, so 
liable at all times to raise it above the true standard. 
The barometer used duriug the two years, to insure accuracy as far as practica- 
ble in the instrument, was unexceptionable in every respect, being filled with 
pure mercury, carefully revived from cinnabar, by distillation in a retort, with the 
filings of iron, and gradually boiled over a slow charcoal fire from the sealed end 
upwards, which process is always tedious and difficult of accomplishment. 
As not less than ten or twelve observations were taken and recorded daily with 
nicety, the correctness of the following tables may be relied on. 
I possessed no instruments for ascertaining the density and humidity of the at- 
mosphere, evaporation, or the quantity of rain which has fallen during the years 
under review. The winds stated as stormy, strong, brisk, steady, moderate, gentle, 
little, and light, have been estimated by their supposed strength unaided by a guage, 
to indicate their actual force. The same may be noticed in regard to the quality 
and appearance of the clouds. 
The sudden creation and increase of clouds, spontaneously rising from dells 
and valleys, subsequent to rain and snow*, more especially during the periodical 
* During the rainy months, the clouds, after rising, forming, and collecting, ascend to 
a certain altitude, and generally remain stationary, and frequently day after day about 
the same time come down again in rain. 
