4'J8 Reduction of Meteorological Tables in the Doab. 



By comparing these numbers it will be observed, that both the 

 rainy days are more numerous, and the quantity of rain falling is 

 considerably greater at Kulsea than at Surrowli ; their respective po- 

 sitions may serve in a measure to explain this, the first being situated 

 in the jungle adjoining the base of the Sub- Himalayan range of hills, 

 and consequently subjected to its influence, while the other is the 

 low land of the plains around Delhi. 



The observations at Surrowli are still in daily progress, under Mr. 

 Brew's superintendence, and when accumulated to a sufficient extent, 

 will again be subjected to examination and discussion. 

 1th May, 1842. 



Meteorological Observations in Upper Assam, made during the years 1839, 

 40, 41, and 42. By J. W. Masters, Esq.* 



June 1839.— On the 15th of June I started from Guhatti, N. Lat. 26° 

 35' E. Long., in a small boat, proceeding up the Kullung River to Bise- 

 nath, N. Lat. 26^ 40' E. Long 93° 12'. I made regular observations at 

 sunrise, 2 p. m. and sunset, the Thermometer being the only instrument I 

 had with me. 



The mean temperature of the latter 15 days was 80'56o at 

 Sunrise. 2 p. m. Sunset. 



78.020 82.860 8O.8I0. 



Highest temperature observed 90.5°, lowest ditto 75°. 



Greatest variation 15.50. 



There were 10 rainy days; the 17th was fair in the morning, with a 

 storm at sunset. 



July. — During the month of July, I travelled from Bisenath to Luc- 

 kimpoor, in N. Lat. 27o 15' E. Long. 94© 7' ; thence crossing the Brahma- 

 pootra, proceeded up the Booree Dihing to Jeypoor, N. Lat. 27©! 5' 

 E. Long. 95° 21'. 



Mean temperature of the month, 79.67o. 



Sunrise 2 p. m. Sunset. 



761 lo 82.260 8O.660. 



Highest temperature observed 880, lowest ditto 74o. 

 Greatest variation 14°. 



Rainy days 13, with frequent very heavy rain at night. 



* Presented for publication in the Calcutta Journal of Natural History by the Assam Com 

 pany.— Eds. 



