474 



The Rev. H. Lloyd on the Meteorology of Ireland. 



Table XXXII. Total Rain-Fall in tue Yeae 1851, at the seveeal 

 Meteoeological Stations. 



20 — 25 inches, . 



25—30 „ 



30—35 „ 



35—40 „ 



40—45 „ 



45—50 „ 



50—60 „ 



Portarlington, . . . . 21 '23 inches. 



Killough, 23-19 „ 



Dublin, 26-40 „ 



Athy, 26-74 „ 



Donaghadee, .... 27-93 „ 



.Courtoivn 29-64 „ 



Kilrush, 32-58 „ 



Armagh, 33-05 ,, 



Killybegs, 33-20 „ 



[Dunmore, 3354 ,, 



fPortrush, 37-24 „ 



iBuncrana, 39-28 „ 



rMarkree, 40-31 „ 



I Castletownsend, . . . 42-53 „ 



Westport, 45-86 „ 



Cahirciveen, 59-37 ,, 





Thus, it -will be seen, the greatest rain (at Cahirciveen) is nearly treble of 

 the least (at Portarlington). The meaJi rain-fall throughout Ireland, in the 

 year 1851, is 34-50 inches. 



If we assume the proportion of rain at the different stations to be constant, 

 or nearly so, the numbers of the preceding Table may all be reduced to their 

 mean values, by multiplying by the factor -which expresses the relation of the 

 rain of 1851 to the mean at any one station. We already possess t-wo such 

 mean values : viz., at Armagh and Dublin. They are 29-14 and 34-68 inches 

 respectively, and the factors thence deduced are 1-10 and 1-05. 



When we examine the results of the preceding Table, taken in connexion 

 with the geographical position and physical circumstances of the stations, we 

 arrive at the following conclusions : — 



1. The places of least rain are either inland, or on the eastern coast ; while 

 those oi greatest rain are at, or near, the western coast. Thus the stations at 

 which the yearly fall of rain exceeds 40 inches are all on the western and south- 

 western coasts ; while those at which it is below 30 inches are either inland or 

 on the eastern. 



