Reduction of Meteorological Tables in the Doab. 423 



No. of days of cloudy with rain to those of cloudy with- 

 out rain, as , . .. .. .. 1 to 1.72 



No. of days of Easterly winds to those of Westerly, as 2 to 3. 



Considering the rainy season to commence in June and to termi- 

 nate in September, we have the following points determined : — 



No. of Rainy Total of Daily Average 

 Days. Rain. of Rain, 



AtKulsea. Rainy Season of 1837, . . 21 .. .. 19.63 934 



of 1838, 36 .. .. 39.75.. .. 1.104 

 of 1839, .. 28 .. .. 32.30.. .. 1.15 

 of 1840, .. 24 .. .. 21.375 .. .89 

 of 1841, .. 26 38.00 .. 1.46 



Thermometric observations are again in progress at Kulsea, and 

 will probably be of more interest and value than those reduced in 

 the present paper, in the two first Tables of which, I place very little 

 confidence for reasons before indicated ; but I would venture to hope, 

 that the remaining Tables of the present series may be considered a 

 contribution of some interest, to the Meteorology of Upper India. 

 Camp Kulsea, Doah Canal, 8tk March, 1842. 



Reduction of Meteorological Observations, made at Surrowli on the 

 Doab Canal, during the years 1837-38-39-40-41. By Lieut, R. 

 Baird Smith, Bengal Engineers. 



The observations at Surrowli, conducted by Mr. Sub -conductor 

 Brew, overseer of the Southern Division of the Doab Canal, were 

 instituted simultaneously with those at Kulsea, discussed in a for- 

 mer paper. They have been continued with perfect regularity from 

 May 1837 up to the present time, and from Mr. Brew's well-known 

 exactitude in observation, I am disposed to place much confidence 

 in his results. 



The series to be discussed consist of daily Thermometric Obser- 

 vations at sunrise, with registers of the Pluviometer and the variations 

 of wind and weather, extending over a period of five years. Surrowli 

 is situated about ten miles to the northward of the city of Delhi, 

 and may probably be about 600 feet above the level of the sea. The 



