444 Meteorological Observations in Upper Assam. 



March. — A very stormy, rainy month, comparatively little during the 

 day, but periodic returns of thunder and very heavy rain at night; viz. 

 on the 9th, 10th, nth, 12th, 13th, 14th, 15th, 16th, l7th, 18th, 24th, 

 26th, 27th, 28th, and 29th. 



Mean height of Bar. 29.2427 inch. Ther. 66.27°. 



At Sunrise. 2 p. m. Sunset. * 



Bar. 29.3474 inch 29.3474 inch 29.3335 inch. 

 Ther. 60.51° 69.66° 68.64°. 



Greatest pressure observed 29.43 inch, least ditto 29.22 inch. 

 Highest temperature 78°, lowest ditto 56°. 

 Greatest variation. Bar. 0.21 inch. Ther. 22°. 



April — Frequent showers in the day, with intervals of fair weather; 

 rain throughout the whole day and night on the 10th and 28th, with the 

 periodic returns of thunder and rain on 18 different nights as in March. 

 Mean height of Bar. 29.3157 inch ; Ther. 70.73°. 



At Sunrise. 2 p. m. Sunset. 



Bar. 29.3080 inch 29.3143 inch 29.3248 inch. 

 Ther. 66.10° 74.40° 71.80°. 



Greatest pressure observed 29.45 inch, least ditto 29.14 inch. 

 Highest temperature 85°, lowest ditto 60°. 

 Greatest variation, Bar. 0.31 inch. Ther. 25°. 



May. — A very wet month, rain on 24 days, and throughout day and night 

 on the 19th ; the .periodic returns of thunder storms were not so regular 

 as in March and April, though very frequent between 4 p. m. and 9 p, m. 

 Mean height of Bar. 29.2497 inch. Ther. 75.97°. 



At Sunrise. 2 p. m. Sunset. 



Bar. 29.2564 inch 29.2603 inch 29.2326 inch. 

 Ther. 72.19° 78.38° 77.34°. 



Greatest pressure observed 29.40 inch, least ditto 29.09 inch. 

 Highest temperature 86°, lowest 66°. 

 Greatest variation. Bar. 0.31 inch. Ther. 20°, 



June, — Fair at the beginning, after the 5th very rainy. Rain at Sunrise 

 on 16 days ; at 2 p. m. on 6 days ; and at Sunset on 5 days ; with frequent 

 thunder storms at night, these returning regularly towards the end. 

 Mean height of Bar. 29.1098 inch. Ther. 81.66° 



At Sunrise. 2 p. m. Sunset. 



Bar. 29.1178 inch 29.1140 inch. 29.0976 inch. 

 Ther. 77.64° 84.68° 82.66°. 



Greatest pressure observed 29.22 inch, least ditto 29.00 inch. 

 Highest temperature 89°, lowest ditto 72°. . 

 Greatest variation, Bar. 0.22 inch. Ther. 17°. 



