AVERAGE TEMPERATURE AT MADRAS AND CHISWICK. 



115 



night, the average highest temperature in the day, and the average 

 range of daily temperature, in each month, at Madeas, lat. 13° 4' : 



Months. 



ATerage 

 lowest 

 tempera- 

 ture. 



January . 

 February . 

 March . . 

 April , . 

 May . . 

 June . . 

 July . . 

 August 

 September 

 October . 

 November 

 December . 



Year , . 



72-7 

 72-6 

 76-9 

 81-0 

 82-4 

 82-0 

 81-5 

 80-1 

 79-2 

 77-4 

 74-3 

 73-0 



77-76 



Average 

 highest 

 tempera- 

 ture. 



Average 

 daily range 

 of tempera- 

 ture. 



81-1 

 83-6 

 87-6 

 91-4 

 92-9 

 930 

 92-3 

 90-2 

 88-5 

 84-9 

 82-8 

 80-6 



87-40 



8-4 



11-0 



10-7 



10-4 



10-5 



11-0 



10-8 



10-1 



9-3 



7-5 



8-5 



7-6 



9-65 



He also finds that the average lowest temperature at night, the 

 average highest temperature iu the day, and the average range of daily 

 temperature, in each month, at Chistick, near London, from 1826 to 

 1853, are as follows : — 



Average 

 lowest 

 tempera- 

 ture. 



Average 



highest 



teiupera- 



ture. 



Average 

 daily range 

 of tempera- 

 ture. 



January . 

 February . 

 March . , 

 April . . 

 May . . 

 June . . 

 July . . 

 Aug^t 

 September 

 October . 

 November 

 December . 



Tear . . 



30-78 

 32-42 

 33-72 

 36-89 

 42-90 

 49-16 

 51-98 

 51-01 

 46-64 

 41-36 

 36-22 

 33-95 



40-59 



42-59 

 45-83 

 50-74 

 57-42 

 64-79 

 71-86 

 74-36 

 73-04 

 67-33 

 58-76 

 49-93 

 45-33 



58-50 



11-81 

 13-40 

 17-01 

 20-53 

 21-89 

 22-70 

 22-38 

 22-03 

 20-69 

 17-40 

 13-71 

 11-37 



17-91 



I 2 



