The Society desires it to he understood that it is not ansiverable 

 for any opinion, representation of facts, or train of reasoning that may 

 appear in this Volume of its Proceedings. The Authors of the several 

 Memoirs are cdone responsiilc for their contents. 



ERRATUM 



p. 63, line 2, I'oi- " oxygen " reiai " water." 



Dublin : Printed at thb tTNivEnsiTT Press by P()>fSONBY and Gibus. 



