Meteorological Observations taken at Gangaroowa near Kandy, 
Ceylon, nm the month of January, 1864. 
Alt. 1560 ft.; E. Long. 80° 87’, N. Lat. 7° 17/. 
All the Instruments have been compared with standards. 
_ The tension of aqueous vapour, dew point and humidity, have been 
found from the readings of the dry and wet bulb Thermometers by 
Mr. Glaisher’s Hygrometrical tables (Ed. 1863). 
The dew is the weight in grains deposited on-a square foot of 
ordinary woollen cloth exposed on a board from 6 P. M. to 6 A. M. 
or for as many hours as there is no rain. 
The rain guage is 43 feet above the ground. 
The ozone cage is hung about 25 feet above the ground. 
The direction of the wind given, is that of the lowest current by the 
vane, and of the currents above this by the direction in which the 
Nimbi and Cumulo-Strati clouds are moving. 
In this column a “ calm” signifies that the clouds are apparently 
motionless: “ variable,” that the clouds apparently in the same or 
nearly the same stratum move in no fixed direction, but their parts 
move as if in vortices, or different masses of them move up from 
different quarters as if into a vast vortex, this being nearly always the 
ease before thunder storms. 
Entries, such as W S W and NN W or ES signify that 
N N W to calm, 
the clouds are evidently in strata of different altitudes, that those 
in the lowest stratum move from W S W;; those in the next higher 
from N N W;; those in the next are apparently becalmed, and so on. 
The velocity and distance in 24 hours are given by Robinson’s 
Anemometer. 
In the column for Lightning and Thunder 
L =“ Lightning” when the flash is near enough to be visible. 
LR =“ Lightning Reflection” when the flash is so distant that 
only its reflection on the clouds or in the air is visible. 
“ Morn,” is6 a. M., “ Even,’ 6 P. mM. and “ Night,” 12 Pp. m. and 
“ fore” and “ after” are prefixed to these, as ordinarily to ‘“ Noon,” 
to denote the 3 previous and 3 following hours. 
R H. Barnes. 
