440 



Meteorological Observations in Upper Assam, 



December. — Weather generally fair throughout, thick fogs in the 

 morning ; gathering about sunrise ; rain on the 29th. 

 Mean temperature 61. 450. 



At Sunrise. 2 p. m. Sunset. 



51.54» 67.5° 65.31° 



Highest temperature observed 76° lowest ditto 45°. 

 Greatest variation 31°. 



I have had no opportunity of making any satisfactory observations 

 relative to the wind, being generally surrounded by a dense jungle : the 

 direction has for the most part been between the North-East and South- 

 East, although the upper strata of clouds may frequently be seen fly- 

 ing in a contrary direction to the lower strata. 



From the 15th June to the 31st December, there were 65 rainy days; 

 besides heavy periodical showers at night. 



Mean temperature of the 6 months 76.74°. 



At Sunrise. 2 p. m. Sunset. 



71.62° 79.7° 78. 120. 



Highest temperature observed 91.5o, lowest ditto 45°. 



Greatest variation 46.5°. 



On the 5th December I received a Barometer, but the observations 

 have hitherto been too imperfectly registered to be depended upon. 

 Nazera, Zlst December, 1839. 



January 1840.-— Nazera N. Lat. 26° 52' E. Long 94° 44' 42"(*— )above 

 the sea. Weather generally fair throughout. Rain on 6 days, and dense 

 fogs in the mornings. On the 14th, at 6 a. m. two shocks of an Earth- 

 quake. 



Mean height of Bar. 29.47 inch. Of the Ther. 58.87° 

 At Sunrise. 2 p. m. Sunset. 



Bar. 29.4694 inch 29.4767 inch 29.4690 inch. 

 Ther. 48.47° 64.48° 63.68°. 



Greatest pressure observed 29.515 inch, least ditto 29.310 inch. 

 Highest temperature 74.5°, lowest ditto 46°. 

 Greatest variation. Barometer 0.205 inch. Ther. 25.5°. 

 February. — Weather generally fair, with foggy mornings ; shock of an 

 Earthquake on the 3rd at 2 a. m. Rain and thunder at night on the 16th, 

 17th and 26th. 



Mean height of Bar. 29.3898 inch, of Ther. 64.4°. 



* Something wanting here, which we regret we cannot supply, not being acquainted with 

 the locality.— Eds. 



