Results of Meteorological Observations. xiii 



The highest reduced reading of the Barometer throughout the 

 year was 30.0G7, on January I . The lowest was 29.594, on May 

 23. The mean annual pressure was 29.82S inches; being 0.016 

 less than the average of twenty years past. 



The greatest heat registered by a Thermometer placed in the full 



sunshine was 128 5, on May 9. The highest temperature in the 



shade was 107 o, on May 12 ; the lowest, 631, on the morning 

 of February 16. The mean temperature of the whole year was 



S'2-2 ; being 0*9 above the twenty year average. That of evapo- 



ration, as shewn by a wet bulb thermometer, was 75-9, being 1*2 



o 



above the average. The mean daily range of temperature was 14-4. 



Rain fell on 72 days. The greatest fall on any one day in the 

 year was 4 -98 inches, on November 6. There were twelve days on 

 which the quantity measured exceeded one inch. The total fall dur- 

 ing the year was 37-16 inches; being 11-47 less than the usual 

 quantity, or only 7 6 per cent of the average of 52 years. 



The wind, as registered by Osier's Anemometer, was variable 

 i. e. too unsteady for any resultant to be satisfactorily deduced, on 

 14 days The remaining 351 days were distributed amongst the 

 sixteen principal point of the compass as in the subjoined table : — 



n 10 1 e 13 j s 35 I w ,...37 



N N E . . . . 27 E S E 6 I S S W 22 ■ w If w 30 



Hi 24 s k II s w 20 j n w 21 



BHi.;.. 36 ; s s e 18 j w s w . . . . 29 | n k w 12 



No remarkable storm or other unusual meteorological pheno- 

 menon occurred at Madras throughout the year 1861. 



Norman Robert Pogson, 



Govemmen t A stronomer, 



