1904- 



Praegkr. — Among the Fennanag/i Hills. 



233 



shaggy dark heather. They dip southward at low angles, and 

 the long bog-covered dip-slopes alternate with steep scarps, 

 50 to 100 feet high, which run for long distances east and 

 west, and facing north as they do, provide a congenial habitat 

 for many a rare plant, in surroundings bleak and barren in 

 the extreme. A number of small lakes lie in the east and 

 west hollows under these scarps, and other lakes again along 

 the fringe of the limestone on the lower grounds. 



The area which proved the most interesting was the high 

 moorland lying between the Correl Glen depression and lyough 

 Erne. Both in its general and detailed features this district 

 exhibits cuesta structure, to use a term recently referred to in 

 these pages^ — long dip-slopes alternating with steep rocky 

 scarps along lines of jointing. 



Lower Lough Poula- 

 Erne. phuca. 



Correl 

 Glen. 



Diagrammatic Section from Lough Erne to Correl Glen ; Upper 

 Carboniferous Limestone, capped by Yoredale Sandstone. Length 

 of section, 3 miles; height, 1,100 feet. Direction, north to south 

 (left to right of sketch). 



On my first day (July 3) I walked across the hills in pouring 

 rain to Correl Glen, now familiar by name to Irish botanists 

 as the habitat of Pyrola secimda and Trichomanes radicans. 

 The scrubby Birch woods were so drenching that I shirked 

 them, and turned up the valley which runs south-west from 

 Carrick Lake, where some good plants were obtained. Thence 

 to Loughs Fadd and Monawilkin ; by the former I first met 

 Pyrola media, and also Sesleria growing on sandstone, of 

 which more anon ; the latter added Rubtis botryeros, apparently 

 a rare bramble, and not hitherto recorded from Ireland. Then 

 over Carrick Hill, where Euphrasia Salisburgensis, not 

 previously known in Ulster, was plentiful on the limestone 

 rocks ; Jtmipetus nana, on the top of the hill, was a new 



' Supra, p. 145. 



^3 



