Meteorological Observations in Upper Assam, 439 



August. — Remained at Jeypoor till the 29th, then proceeded down the 

 river towards Seebsagur, N. Lat. ~ E. Long. — ■ 

 Mean temperature 78.79°. 



At Sunrise. 2 p. m. Sunset. 



75.72° 80.87° 79.77°. 



Highest temperature observed 86°, lowest ditto 74°. 

 Greatest variation 12°. 



Rainy days 25, besides frequent heavy falls of rain at night. 

 September. — The observations in September were made on the Booree 

 Dihing the Brahmapootra at Jorehaut, N. Latitude 26° 46' E. Longitude 

 94° 13' 15". 



The mean temperature of the month, 80.89. 



At Sunrise. 2 p. m. Sunset. 



78.18° 84.15° 80.75°. 



Highe^ temperature observed 91.5°, lowest ditto 76°. 

 Greatest variation 15.5°. 



Rainy days 11, a storm at 5 p. m. on the 3rd, and at night on the 5tli 

 very heavy rain and thunder; at 8 p. m. on the 21st, also on the 25th 

 at noon. 



October. — In October the observations were made principally at 

 Nazera ; the rains broke up on the night of the 14th with a storm, ac- 

 companied by heavy rain and thunder ; the remainder of the month was 

 beautifully fair. In the former months when in a small boat, and also 

 during this month on shore, I have observed the Thermometer frequent- 

 ly to stand higher between 4 and 5 p. m. than at 2 p. m., and the heat 

 is to me more oppressive in the after part of the day than at noon. 



Mean temperature of the month 79.98°. 



At Sunrise. 2 p. m. Sunsei. 



73.35° 83.53° 83.08. 



Highest temperature observed 88°, lowest ditto 64°. 



Greatest variation 24°. 



The weather was generally fair throughout. Rainy days 2, foggy 

 mornings 6. 



November. — The month of November was generally fair. Heavy rain 

 on the 21st, 23rd and 29th. 

 Mean temperature 72.86o. 



At Sunrise. 2 p. m. Sunset. 



65.42° 76.73° 76.45°. 



Highest temperature observed 82°, lowest ditto 62°. 

 Greatest variation 20°. 



