26 



PHYSICAL GEOGRAPHY OF BRITAIN. 



In calculating the tables it has in some few instances 

 been found unavoidable to omit one year from the series, 

 in consequence of absent numbers or volumes of the par- 

 ticular works in which they have been from time to time 

 recorded, or omissions on the part of the observer. The 

 period column, in which the number of years is stated, 

 will show where such omissions have been made. Thus, 

 the number of years from 1815 to 1830 inclusively would 

 be 16, but the calculation for Kinfauns in the former 

 table is made from 12 only. A general average will give 

 us the following scale of temperature in connection with 

 latitude, for places below 100 yards of altitude. 



AVERAGE TEMPERATURE OF BRITAIN, ACCORDING TO 





LATITUDE. 



Lat. 



Temp. 



Place. 



51° 



51° 



Penzance, Gosport, Isle of Wight. 



52 



49i 



London, Bushey, Oxford. 



53 







54 



47* 

 47f 



Manchester, Alderley. 



55 



Malton, Jesmond, Kendal, Carlisle, Isle of Man. i 



56 



47f 



Edinburgh, Leith. 



51 



47f 



Kinfauns, Annat, Clunie. 



58 



^l 



Aberdeen. 



59 



46i 



Wick. 



It would appear by these calculations ,that in the middle 

 of Britain, between latitudes 54° — 57°, there is no ap- 

 preciable difference of temperature, except from local 

 causes ; while southward of the 54th degree there is an 

 increase exceeding 1° of temperature for 1° of latitude ; 

 and northward of the 57th degree there seems from the 

 above (insufficient) data to be a diminution of \\° of 

 temperature for 2° of latitude. At Cheltenham, Lan- 

 caster, and Keswick, the recorded temperature appears 

 too high ; at Exeter and Dunfermline it is considerably 

 below the average of other places near. The graduation 

 of thermometers may cause an apparent difference of one 

 or two degrees, or even more. 



