197 
tion (and it requires a very strong one) pile up some 6,000 feet of strata on 
their top (vide Professor Ramsay) ; and then with another effort which must 
be even astill stronger one, look at that enormous mass being gradually 
eaten away by the waters, and-you may then have some idea of the vastness 
of the time and of the agencies required, wherewith the God of Nature has 
worked His will upon those everlasting hills ! 
Mr. Braikenridge then gave the result of his researches amongst 
the Flora of the district in the following list of plants found by 
himself. The Ophioglossum Vulgatum was rare and only found 
in one field. 
Polypodium vulgare. 
Lastrea thelypteris. 
ae oreopteris, 
»  Jfilia-mas. 
Wi dilatata, 
Athyrium /jilix-femina. 
Asplenium adiantum nigrum. 
“ trichomanes. 
9 «= * Marinum. 
FY ruta-muraria, 
Scolopendrium wulgare. 
Ceterach officinarwm. 
Blechnum boreale. 
Pteris aquilina. 
Osmunda regalis, 
Ophioglossum vulgatum. 
_ Orchis morio 
9  mascula, 
»  ustulata, 
x» maculata. 
»  lalifolia. 
3»  pyramidalis, 
Gymnadenia conopsia. 
Habenaria bifolia. 
Ophrys apifera. 
Spiranthes autummalis, 
Listera ovata. 
Neottea nidus-avis, 
Epipactis lalifolia, 
