12 



land, on which the stations for meteorological and tidal obser- 

 vations were marked, so as to show their geographical distri- 

 bution. And he availed himself of the opportunity to give a 

 brief account (derived from these observations) of a cyclonic 

 gale, accompanied with a sudden fall of the barometer and a 

 corresponding rise of the tide, which was felt over the whole of 

 Ireland on the 6 th of last month. 



The Rev. Samuel Haughton stated, in confirmation of the 

 President's remarks, that the returns from the tidal stations 

 showed an elevation of water varying from ten to eighteen 

 inches above the mean height, corresponding to the period of 

 greatest depression of the barometer. This depression would, 

 however, only account for part of the elevation of water, the 

 rest must be attributed to the force of the wind. 



Mr. W. Hogan read an analysis of the meteorological ob- 

 servations communicated by Mr. G. Yeates, and published in 

 the Proceedings. 



" The violent and fatal epidemics, affecting both animal 

 and vegetable life, which prevailed during the preceding seven 

 years, may have been, and probably were, in some manner 

 connected with the state of the atmosphere ; and it has occurred 

 to me that an examination of the state of the weather durine 

 that period might be interesting and possibly instructive. 



" The quantity of rain which falls at any period, in this 

 climate, is, in general, indicative of the state in which both the 

 barometer and thermometer stood at the time. Bright skies 

 and serene weather are in general accompanied by a higher 

 mark both of the barometer and thermometer, and on the con- 

 trary the mark is lower in cloudy, damp weather. It has, 

 therefore, occurred to me that a table showing the quantity of 

 rain which fell in each month during those seven years would, 

 for this climate, give a general view of the state of the atmo- 

 sphere at the time. The Royal Irish Academy has published 



