268 



Pi'oceedings of the Royal Irish Academy. 



APPENDIX. 



Table shoioing levels of vctrious Chanibers, and the outside surface at the same 



2Joints. 



New Cave. 



Chamber. 



Floor LeveL 



Koof Level 

 (approx.). 



Level of Ground 

 outside. 



O'Leary's Cave, . 



300 (approx.) 



320 



380 



Demon's Cave, . 



280 



300 



335 (road).i 



Victoria Cave, . 



280 



295 



330 



Bottom of Pit, . 



250 



300 



(roof of Gallery of Arches) . 



380 



Garrett Cave, 



330 (approx.) 



350 



400 



Old Cave. 



Main Passage, . 



315 



335 



390-430 



East Chamber, . 



( 260 (water). 



1 360 (top of slope). 



400 



420 



As the level of the water in the Sheep Eiver, which flows over glacial 

 drift, is 300 feet above O.D., it will be seen that the greater portions of the 

 two caves are below the stream level. 



^ In the majority of cases (with the exception of the Labyrinth and the Maze) tlie names 

 used in the map of the New Cave are those employed by earlier explorers ; or are names Avhich 

 were found written upon the walls. 



In the case of the Demon's Cave, we were unable at first to account for the title written up ; 

 t was, however, noticed that a curious rumbling noise was frequently heard in that chamber, and in 

 no other portion of the cave. On plotting the survey upon the 25 -inch map of the district, it was 

 found that this cave lay immediately below a road, and therefore it is probable that this curious noise 

 was caused by carts passing overhead (see Plate XIV.). 



This fact is of importance as evidence of the accuracy of our survey. 



