18 



Table III. 



Showing the Month in each Year, from January, 1843, to 

 December, 1849, in which the greatest and least Quantity 

 of Rain fell in Dublin; the Month whose mean Quantity 

 of Rain is greatest being placed first, and the others in rank 

 of their mean Quantity of Rain. 



Month. 



1843. 



1844. 



1845. 



1846. 



1847. 



1848. 



1849. 



Monthly 

 Mean. 



October, . . . 

 August, . . . 

 January, . . 

 April, . . . 

 November, . 

 July, . . . 

 June, . . . 

 December, . 

 September, . 

 May, . . . 

 March, . . 

 February, . 



•138 

 . 4-644 



3-742 



3-495 



5-082 



•800 

 2-968 



4-143 

 •711 



3*907 



3-060 

 2-936 

 2-544 

 2-503 

 2-360 

 2-116 

 2-005 

 1-938 

 1-860 

 1-814 

 1-739 

 1-534 



•560 



•705 



•713 



•316 







The numbers indicating the greatest monthly fall of rain 

 in each year are underlined. 



The monthly mean varies from three inches to an inch and 

 a half. 



Professor Allman read a paper on the reproductive sys- 

 tem and development of the gemmae in Paludicella articulata. 



" All the fresh-water polyzoa produce true ova, which are 

 formed in a definite organ or ovary. From the existence of a 



