736 



Proceedings of the Royal Irish Academy. 



the west, was observed at Derry-na-Sliggan, on tlie shores of Killary 

 Fiord, as was also Carex jlava (var. Upidocarpa). This CEnanthe be- 

 comes a sea-coast plant in the west of Ireland from Galway north- 

 wards. 



Benchoona. 



1970 feet. 

 Sagina subulata. 



1900 feet. 



I Salix herbacea (to 1 680 feet). 



1800 feet. 



I Isoetes laenstris. 



1600 feet. 

 Thalictrum alpinum (to 1300 feet). 



1500 feet. 

 Lycopodiiim selaginella. 



900 feet. 



Empetrum nigrum 



Littorella laenstris 



Thalictrum minus (to 680 

 feet). 



Hieracium anglicum (var. 

 iricum). 



700 feet. 

 Asplcnium ruta-muraria. 



500 feet. 



Alchemilla vulgaris. 



Hymenophyllum unilaterale. 



Finally, there remains to be considered the mountainous district of 

 Bennabeola — the Twelve Bens of Connemara. There are in reality 

 seventeen more or less detached summits, from about 1500 to 2400 

 feet in height. These are huddled together in a compact mass, though 

 several valleys cut far into them. They are well known to all lovers 

 of mountain scenery, and their white and fantastic cluster of rugged 

 points and ridges is one of the chief beauties and attractions in the 

 Connemara district. The formation is chiefly quartzite ; but, fortu- 

 nately for botanists, one or two peaks are mainly composed of a more 

 productive and tractable clayey schist. The valleys penetrating far- 

 thest to the heart of the mountains are. Glen Inagh from the east, 

 Glencoaghan from the south, and Owenglin from the west. No road 

 leads up any of these valleys for much distance, and a guide would 



