416 Reductiofi of Meteorological Tables in the Doab. 



The Mean of the columns of Maxima and IVIinima is 72.41°, thus 

 shewing a difference fi-om the Mean Annual Temperature of +0.25°, 

 or only a quarter of a degree. The highest indication of the Ther- 

 mometer was 92°, the lowest 56°, thus giving an extreme range of 

 36°, precisely the same as in 1837, although the Annual Maximum 

 and Minimum of that year were 2° higher respectively than those of 

 1838. This difference is due no doubt to the Registers of four months, 

 (two of which are the coldest in the year,) being deficient in 1837. 

 It is probable that had these been furnished, there would have been 

 a very close approximation to the same results in both Tables. 



For the year 1839, the Registers were carried on only for the 

 months of January and February, the Thermometer having been un- 

 fortunately broken at the close of the latter month. The following 

 are the results for these two months : — 



Min. Mean. Max. 



January, 50° 54.80° 58° 



February, 56° 58.53° 63° 



TABLE III. 



Shewing Monthly Deviations of the Thermometer from its Mean 

 Annual Height at Kulsea. 



Months. 



January, 

 February, 

 March, . . 

 April, .. 

 May, . . . 

 J une, . . . 



An. Mean. 



Kulsea. 



1837. 



0 

 0 

 0 

 0 



+5.47 

 +6.70 



74.798 



Kulsea. 



1838. 



—13.90 

 —11.13 

 — 9.55 

 + 5.57 

 + 10.03 

 + 18.31 



72.16 



Months. 



July, .. 

 August, . . 

 September, 

 October, . . 

 November,. 

 December,, 



Kulsea. Kulsea. 



1837. 



+10.71 



+ 6.65 



+ 1.71 



— 3.99 



-12.77 



—14.67 



0 



1838. 



+ 9.64 

 + 7.09 

 + 5.70 



— 1.00 



— 7-83 

 —12.94 



0 



Mean Range. 25.38 31.25 0 0 



The Pluviometer employed in the Kulsea observations consisted of 

 an upper Receiver terminating in a long tube. The aperture of the 

 Receiver was exactly ten times that of the tube into which the Rain 

 passed and was measured. The rod employed for ascertaining the 



