Meteorological Observations taken at Gangaroowa near Kandy, 

 Ceylon, in the month of January, 1864. 



Alt. 1560 ft. ; E. Long. 80° 37', 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. G-laisher'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 4-§- 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 

 case before thunder storms. 



wsw 



Entries, such asWSW and NNWor — — — — — signify that 



NNWto calm, & J 



the clouds are evidently in strata of different altitudes, that those 



in the lowest stratum move from WSW; those in the next higher 



from NN¥; those in the next are apparently becalmed, and so on. 



The velocity and distance in 24 hours are given by Eobinson's 

 Anemometer. 



In the column for Lightning and Thunder 



L = " Lightning" when the flash is near enough to be visible. 



LE = " Lightning Reflection" when the flash is so distant that 

 only its reflection on the clouds or in the air is visible. 



" Morn," is 6 a.m., " Even," 6 p. M. and " Night," 12 P. 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. 



