( ) 
the Layers arc of e>:cecding thick Stone,: which fupprefs thofc 
Noxious Steams. 
« 
• V. His Obfervadons on PL ANTS being very numerons and Cu- 
rious*, and on fuchas are tor the mofl: part, unknown to me; 
1 can fay litcieor nothing to them. Hss Gratnen montanum fpica fo- 
licicca gr amine a Kaij, which t have often fcen at Snowdon siud our 
other High Mountains, is well reprefented in his IVth Table /b 2 . 
as is aifo his Saxifraga j^lpina ericotdes fiore arpdeo Tourn. 
whereof they have great Plenty at the Van above Brecknock, as 
well as at Snowdon and Inglchurroagh'. The Mofs-figur’J /ter. I, 
Tah. VI. fig 2. which he entitles a Variety of Mr. Kay's aWnf. 
CHS terreflns repens davis fingularibHi ereSHs fioliojls, teems referable 
rather to the Mufcm abieitformis^ and indeed from the Figure, I 
thould take it for no other than our common Ftr^A/ofs y as I thould 
she lit Figure of the fame Table for our A'/ufcta terreflris Poly [per- 
mos *, beeaufe the Fangs by which it creeps, and which would' 
lufficiently have diftinguilh'd it, are not exprefs’d. I find our High 
Mountains of Wales and Ireland- afford feveral Plants not yet dif- 
cover’d inthefe^//?^*, and perhaps thofe of the none 
of which, tho’ they are numerous, have been yet ftarch’d, may 
afford fome others •, or at lead fome Alpine Plants not yet difco- 
^ ver’d to be Natives of Britain. But on the other hand, the Alps 
afford much more Variety than we can pretend to. By the Moun- 
tains he mentions as abounding with Plants, and his Account of 
the height of them, I find that their Highefl: Mountains, as well 
as ours, afford the greatcft Variety of thefe Alpine Vhcits. You 
have found,' Sir, by Experience, thatthe Monntainsof A4» 
‘ and san Berys in Carmrrzanfinre, afford more forts of Alpine Plants, 
than have been as yet difcover’d on all the ocher ' ‘ountains of the 
Ifie of Britain ; and that amongft the Rocks of thofe Moun- 
tains, Klogwyn Karne^ i Vy/va., which being under the Peak of 
Snowdon., is the very Higheft of them, has the mofl: Variety^ and 
indeed where fiich High Mountains vvant naked Rocks, the Al- 
pine Plants they afford, are but few ; as, I have experienced by Pym 
Lymon,Kader Ve^nyn.^nd the Mountains of Brecki^oehTbofe he moft 
lakes notice of in Sveitz.erUnd for Rare Plants, are the ECKE 
SVRENENECK. THLiSBERG. IOC H [or the roke~\ EN- 
^ CELBERG, OCHSBNSTOCK, and WALDNACI/T', and a- 
iBOng the Grifons, Spel-Hca, Afonte de Set, Monte dcSoglio, Segnes/ 
aiid 
