334 



ON THE METEOROLOGY OF IRELAND. 



noticed ; and, rejecting it, the extreme positions correspond to the 

 two solstitial months. They are the following : 



June, . . 

 December, . 



= N. 106 W., 

 = N. 9 W., 



w= 



0114, 

 0104; 



so that the direction of the isothermal lines varies through an angle 

 of 97 in the course of the year, being nearly parallel to the meri- 

 dian in December, and nearly perpendicular to it in June. (See 

 Plate i.) 



We may now employ the formula 



= T+ 



Vy, 



to deduce the probable temperature at any place, and compare it 

 with that actually observed ; we shall thus find the effect [due to 

 local causes. Making this calculation for the four inland stations, 

 we obtain the results given in the following Table : 



EXCESS OF CALCULATED TEMPERATURES AT INLAND STATIONS. 



