Hill, Brodrick, and Rule — The Mitchelstown Caves. 24T 



to a side passage from the chamber. Chimney (B) is marked by Martel as 

 leading from the Four Courts over the main east passage, and then ending 

 blindly ; whereas it is really a sloping shaft running up between boulders 

 directly into O'Leary's Cave. 



There are several minor points of difference which can be noted by com- 

 paring the plans. Martel marks a large number of points with arrows, 

 indicating inlets or outlets of percolating waters ; but the authors were unable 

 to find any evidence of such channels ; certainly as far as the Garrett Cave is 

 concerned outward percolation is impossible, as the floor slopes upward to the 

 end of the chamber. 



The chief portions of the Cave unrecorded previous to the present paper 

 are : — 



1. The continuation from Brogden's Cave to the end. This portion 

 includes the Demon Cave and the Victoria Cave. These names were 

 found chalked up at various points, and have been retained in the new plan. 



2. " The Labyrinth." This name was given by the authors to a series of 

 passages entered on the south of the passage leading from O'Callaghan's to 

 Brogden's Cave. 



3. " The Maze," also named by the authors, and comprising a series of 

 fissures parallel to one another and to the Sand Cave, entered from a tunnel 

 to the north of the Garrett Cave. 



Itineeary of the New Cave. 



For the purposes of an itinerary through the cave we may take the vault 

 known as the House of Commons as the starting-point for the four routes 

 to be described. 



Eoute I. — From the House of Commons to the House of Lords, then 

 eastwards to the farthest point of the cave: i.e., 600 yards from the entrance. 

 Past the junction with Eoutes II and III to the Scotsman's Cave, and thence 

 to O'Callaghan's Cave, the Labyrinth, thence via Brogden's and the Demon's 

 Cave to the Victoria Cave, the extreme end. 



Route II (Circular), — From the House of Commons to the House of Lords 

 to junction with Eoute I, thence via the Eiver to Cast's Cave, down the Long 

 Gallery to the Eabbit-hole, thence to junction with Eoute IV, and so back 

 to the House of Commons. 



Route ///(Circular). — From the House of Commons to the House of Lords, 

 then southwards, and down to the Cathedral and the GaUery of Arches, the 

 Pit, thence via the Four Courts, and up the Chimneys, [a) and {b), to O'Leary's 



