THE 



ECCLESIASTICAL ARCHITECTURE 



or 



IRELAND, 



ANTERIOR TO THE ANGLO-NORMAN INVASION; 



' COMPRISING 



' AN.E.SSAY 



ON 



THE ORIGIN AND USES 



or 



THE ROUND TOWERS OF IRELAND. 



BY 



GEORGE PETRIE, R. H. A., V. P. R. I. A., &c. 



