1890.] Relations between the Hills and Plains of Northern India. 11 



Pairs of stations. 



Quetta . . . 



Jacobabad 



Murree ... 



Rawalpindi 



Simla 



Ludhiana 



Chakrata 



Roorkee ... 



Ranikhet 



Bareilly ... 



Dhnbri ... 



Darjeeling 



Deesa 



Mount Abu 



Pachmarhi 



Hoshangabad 



<° o 



o .y 



c ■« 

 o a 



S-i > 

 <D CO 



5300 

 4700 

 6200 

 6200 

 5500 

 7300 

 3500 

 2500 



Mean daily tempera- 

 ture January. 



Hill sta- 

 tion. 

 (A.) 



Plain sta- 

 tion. 

 (B.) 



40-4° 

 41'7° 

 43-8° 

 42-8° 

 46'7° 

 39-5° 

 59 0° 

 58'9° 



580° 

 506° 

 556° 

 56 8° 

 580° 

 63-5° 

 667° 

 663° 



I Difference. 



IN 



o o 



05 o 

 T3 o 



° ~Z 

 05 5 



17-6° 



3 3° 



8-9° 



1-9° 



11-8° 



1-9° 



140° 



2-3° 



11-3° 



2-1° 



24-0° 



33° 



7-7° 



2'2° 



7-4° 



3-0° 



The data of this table are not of much importance in connection 

 with the present discussion. They shew that the average decrease of 

 temperature with elevation (as determined from day and night observa- 

 tions) varies from l - 9° per 1000 feet in the North-West Himalayas to 3-3° 

 per 1000 feet in Beluchistan and Sind, where the general climatic con- 

 ditions at that time are apparently very similar to those of the Punjab. 



The following table gives the average daily range of temperature at 

 the plain and hill stations of each pair of stations. 





Average daily range 







of temperature for 



Ratio of daily 





January. 



range at plain sta- 



Pairs of stations. 



Hill 



Plain 



tion to that 

 at hill station. 





station. 



station. 



(B.) 





(A.) 



(B.) 



(A.) 



Quetta 





22.4° 



30-5° 



1-4° 



Jacobabad 















Murree 

 Rawalpindi 









12-3° 



25-4° 



2-1° 



Simla 

 Ludhiana 









14' 8° 



24.1° 



1-6° 



Chakrata 

 Roorkee 









14-4° 



25-2° 



1-7° 



Ranikhet 









14 5° 



24-2° 



1-7° 



Bareilly 















Darjeeling 

 Dhubri 









9-7° 



19-9° 



2-0° 



Mount Abu 









16-2° 



311° 



19° 



Deesa 















Pachmarhi 









23-4° 



276° 



1-2° 



Hoshangabad 













