428 Reduction of Meteorological Tables in the Doab. 



TABLE IV. 

 Shewing Thermometric Results for the year 1840. 















Epochs 















Monthly 





























No. 



Months. 



Min. 



Mean. 



Max. 



Differen- 





. 1 



>-< 1 

















tial. 





1 





1 



January, . . 



o 



48. 



53°. 16 



0 



58. 



--17-60 



3d 



Uth 



22d 



2 



February. . . 



52. 



57.24 



06. 



—13.52 



2d 



18th 



28th 



3 



March, . . 



62. 



69.26 



76. 



— 1.50 



3d 



1 2th 



25th 



4 



April, 



7i. 



77.46 



84. 



+ 6.70 



1st 



17th 



21st 



5 



May, 



yo. 



ol. lo 



yu. 





3d 



14th 



25th 



6 



June, 



83. 



85.83 



88. 



+ 15.07 



2d 



4th 



5th 



7 



July, 



8L 



85.00 



90. 



+ 1424 



2lst 



18th 



10th 



8 



August, . . 



78. 



82.48 



87. 



+ 11.72 



3d 



2Ist 



Uth 



9 



September, 



66. 



79.70 



86. 



+ 8.94 



28th 



19th 



4th 



10 



October, . . 



64. 



70.79 



73. 



+ 0-03 



31st 



5th 



12th 



11 



November, 



51. 



59.83 



64. 



—10.93 



31st 



2d 



12th 



12 



December, 



42. 



47.26 



56. 



—23.50 



21st 



14th 



6th 





Sums, 



771. 



849.14 



918. 



1 



0 



0 



0 



0 





Means, 



64.25 



70.76 



1 76.5 



0 



1 0 



1 0 



0 



The month of May in 1840 exhibits a Maximum rather higher 

 than usual, while that of June is lower. This difference appears 

 to have arisen from the earlier setting in of the rain in this year, a 

 very large quantity having fallen in June. October, as usual, ap- 

 proaches most nearly to the Mean Annual Temperature, and the 

 approximation between the Minimum and Means of each is very 

 close, being —0,05° in the first case, and only x0.03° in the other. 

 The difference of the Maxima is greater than usual, being — 3.5°. 

 The coldest day in the year was the 21st of December, when the 

 Thermometer stood at 42°, and the hottest the 10th of July, when the 

 Temperature was 90° : hence the extreme Annual range was 48°, 

 while the Mean range was 38.57°. 



