138 _ BRITISH FERNS. 
between the Mumbles and Penyard Castle; near 
Swansea, near Dunraven, near Oystermouth, on Barry 
Island, and plentifully in Bacon’s Hole: in Pembroke- 
shire, between Tenby and Saundersfoot, in deep fis- 
sures of the rocks, at Fishguard, and in caves and 
cavities of the old red sandstone near St. Justinian’s 
Chapel, St. David’s, &., &c.: in Cardiganshire, on 
the Castle and Castle Rock, at Aberystwith: in 
Merionethshire, at Towyn: in Anglesea it is not un- 
common, but occurs on most of the rocks, Prudholm 
Island, the South Stack, &.: in Caernarvonshire it 
occurs on the Eagle Tower, Caernarvon Castle, and 
on the Orme’s Head. In Cheshire, at Hilbre Island, 
celebrated Wynwick Stone Quarry, quite inland; at 
Knot’s Hole, near Liverpool; near Newton; and — 
abundantly on rocks near Heysham, and in a cave 
at the head of Morecambe Bay: in Cumberland, at 
Whitehaven and St. Bees’ Head. In Scotland it 
grows freely on the Atlantic coast, and on the Isles of 
Mull, Iona, Staffa, &e. 1 saw it growing abundantly 
intermixed with Ruta-muraria and Adiantum-nigrum, 
on the old Cathedral, at Iona: on the eastern coast of 
_ Scotland it is comparatively rare; but it reappears in 
_ some plenty in Durham, on Marsden Rocks, near 
- Hartlepool, and near Southwick, and finally at Scar- 
pernugh, in Yorkshire. In Ireland, the Atlantic coast 
