94 



Proceedings of the Royal Irish Academy. 



eight feet. The distance from the back of the southern to that of the 

 northern chamber is sixteen feet four inches, the distance between 



Ground Plan of the Interior of Ollamh Fodhla's Tomb. 



their entrances being seven feet; while the distance from the termina- 

 tion of the passage to the entrance of the opposite or western chamber 

 measures six feet three inches. In fact, the central octagonal cham- 

 ber may be said to be about seven feet wide in every direction. 



The execution of the devices in this earn appears to be almost 

 entirely in punched work, while there are examples of characters either 

 engraved or nibbed into the stone ; but, whether or not by a metallic, 

 tool, would now be difficult to decide. 



Believing that giving to the public a faithful transcript of the 

 characters inscribed upon the interior chamber-stones in this earn will 



