thf: 



TRANSACTIONS 



ROYAL IRISH ACADEMY. 



VOLUME XXII. 



PART y.-SCIENCE. 



DUBLIN: 

 PRINTED BY M. H. GILL, 



PRINTER to THE ROTJX IRISH ACADEMY. 



SOLD BY HODGES AND SMITH, DUBLIN, 



AND BY T. AND W. BOONE, LONDON. 

 MDCCCLV. 



