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



423 



Table IV. Mean Tejiperatdres for each Month of the Year 1851, at the 



SEVERAL Stations. 



Station. 



Jan. 



Feb. 



Mar. 



Portrush, 42° 42°'3 42' 



Buncrana, . . . . :41 -6 41 -8 43 

 Donaghadee, ... 42-843 -1 43 

 Killybegs, . . . . i43 •8'43 S^S 



Armagh, 41 •4141 -7 42 



KiUough '44-644 -0 43 



Markree, 39-4 41 -2 42 



Westport, 4G -3 45 -2 46 



Dublin, 43 -6 43 6 44 



Portarlington, . . ]40 -6 40 -6 40 



Athy 40 -740 -941 



Courtown, . . . . J43 -3 43 -8 44 



Kilrush, 44 -2 45 -5 45 



Dunmore, . . . . !45 -4 44 -8 44 

 Cahirciveen, ... '45 -6 46 -2 46 

 Castletownsend, . ,45 '4 46 -0 46 



Apr. 



9 45° 

 45 

 46 

 147 

 •5 45 

 ■946 

 -3145 

 ■2!47 

 -0(46 

 •5 [4 3 

 •8145 

 •3;46 

 •247 

 -8|47 

 -4(48 

 -1|47 



May. 



June. 



7 50°-2l55° 

 450 -555 

 650 -8 55 

 151 -4 56 

 4 50 -3 56 



51 -055 

 350 -1155 



3 52 -]J56 



8 52 -5 58 

 149-1 '54 



■4 50 -6 56 

 652 •5'57 

 51 -7156 



4 53 .3158 



5 53 -9 58 

 ■953 -6,57 



July. 



356' 



■856 



■8 '5 7 

 ■658 

 ■257 

 ■2'58 

 7I56 

 ■5J58 

 8,60 

 ■8 57 

 ■958 

 359 

 3,59 

 ■2161 

 •2'60 

 •0'60 



Ang. 



•5 58° 



-959 



■058 



•160 



-158 



-159 



-658 



■360 



-2 62 



•3i57 



•260 



•5 '60 



•1|60 



•6'62 



-2 62 



•761 



Sept 



55°-5 

 '55 -8 

 56-3 



j58 -0 

 55 -3 

 57-2 

 55 -1 

 58 -4 

 55-9 

 53 -71 

 53 -6! 

 56-5' 



58 -1 



59 -1 



58 -7 



59 ^6 



Oct 



Not. Dec. Year. 



!51°3 44°' 



51 -242 • 



■8 43 ■ 



■745 • 



■4 41 • 



2|43 • 



8,41 • 



53 -I 47 ■ 



51 ^941 ■ 



50 -l.yj 



,51 ■osg 



8 41 

 5 44 

 8 42 

 146 



4 44°^7,49°^1 

 6 44 ^3 49 ■O 

 ■4 '49 ^6 

 •350 -S 

 2 48 ^6 

 650 -2 



2 48 -2 

 851 1 



3 50 

 347 

 3^48 

 150 



■945 

 ■6 46 

 •043 

 ■0 46 

 ■8 42 

 ■2 47 

 2 43 

 4 40 

 7 41 

 6 45 



54 -1,45 



745 .i;50 

 646 -2 51 

 5 47 -052 

 •7,46-952 



Before ■we proceed to discuss the mean temperatures in the several months 

 of the year 1851, it is important that we should know the absolute mean tem- 

 peratures at some one station, and thereby the deviations from the means in the 

 several months of the year in question. Over a tract of country so limited as 

 Ireland, these deviations will not differ much in different localities ; and there- 

 fore, knowing them for one station, we are enabled to reduce the results of the 

 single year, with probably sufEcient exactness, to their absolute mean values 

 at all the rest. 



The absolute mean temperatures of the several months are known, at Dub- 

 lin, by means of the series of observations made during twelve years at the Mag- 

 netical Observatory. The monthly mean temperatures, deduced from that series, 

 are given in the following Table. From the year 1840 to 1843, inclusive, the 

 daily means are those of twelve equidistant hours ; from 1844 to 1850, inclusive, 

 they are inferred from the temperatures observed at 10 A. m. and 10 p. m. ; and 

 in 1851, from those of 9 a.m. and 9 p.m. In the last line of the Table are 

 given the deviations of the monthly means in 1851, from the mean monthly 

 means, as deduced from the twelve years. 



