1890. J Relations "between the Hills and Plains of Northern India. 



35 



These figures shew that the minimum temperature was greatly below 

 the normal at the hill stations during the storm and largely above it in the 

 plains on the 30th and in Bengal on the 30th and 31st, the excess being 

 greatest in the North-Western Provinces. The night temperature slowly 

 and steadily rose at the hill station frem the 31st to the 5th, when it was 

 above the normal. It was lowest in the Punjab on the 2nd and 3rd, in 

 the N.-W. Provinces on the 3rd and 4th, and in Behar on the 4th and 

 5th, and in Bengal on the 5th. These facts are most easily summarized 

 by the statement that a wave of cold was transmitted eastwards across 

 Northern India at the rate of about 300 to 400 miles per diem. 



The humidity data of the same stations for the same period are even 

 more interesting and insfcractive. The first of the two following tables 

 gives the humidity at 8 A. M. and the second the aqueous vapour pressui'e 

 at the stations named. The third table gives the amount of cloud at the 

 same hour and illustrates the rapid and complete clearing of the skies 

 which follows the cold weather storms of Northern India. 









Humidity at 8 



A. M. 







Station. 



















Jany. 



Jany. 



Peby. 



Feby. 



Feby. 



Feby. 



Feby. 





30th. 



31st. 



1st. 



2nd. 



3rd. 



4th. 



5th. 



Murree 



98 



100 



99 



83 



84 



26 



35 



Simla 



28 



31 



13 



47 



42 



58 



27 



Lahore 



93 



90 



94 



94 



92 



78 



68 



Roortee 



94 



79 



86 



90 



94 



90 



90 



Lucknow 



85 



95 



78 



62 



81 



63 



100 



Patna 



91 



99 



90 



85 



83 



51 



89 



Burdwan 



83 



84 



82 



62 



73 



59 



67 



Calcutta 



87 



89 



94 



69 



69 



55 



72 









Vapour 



tension at 8 A. M. 







Station, 



















Jany. 



Jany. 



Feby. 



Feby. 



Feby. 



Feby. 



Feby. 





30th. 



31st. 



1st. 



2nd. 



3rd. 



4th. 



5th. 



Murree 



■162 



•159 



•146 



•139 



•149 



■069 



099 



Simla 



•049 



•043 



•017 



•087 



•067 



•148 



•072 



Lahore 



•335 



•281 



•276 



■276 



■245 



•197 



•219 



Roorkee 



■391 



•261 



•242 



•281 



•265 



•259 



•270 



Lucknow . . . 



•486 



•488 



•316 



■257 



•322 



•228 



•300 



Patna 



•275 



•525 



•403 



■308 



■354 



•237 



•378 



Burdwan 



•505 



•524 



•480 



•289 



•354 



•302 



•299 



Calcutta 



■552 



■642 



•549 



■357 



•342 



•309 



•343 



