( 4^7 ) 
VI. Some farther ObferVations relating to the Natural 
Hi/lory of Wales. In a Letter from Mr. Edw; 
Lhwyd to Dr. Tancred Robinfon, F. ${. S. 
Usk, in Monmouthfhire, June 1 5. 1697. 
SIR, 
^lT^HE moft confiderable Difcoveries, fince my laft, 
1 were fome new Species of Gloffopetr <e and Sili- 
quaftra , (the fiift Ichthyodontes , I fuppofe, that ever were 
obf.rv’d in Wales ) on the top ot a high Mountain cal- 
led Blorens near Abcr Gavenni. The SiliqHaJlra were 
fmaller than the generality of thofe I had obferv’d in 
other Countries. Of the Glojfopetr <e vve found one pretty 
large } but the reft very ftnall } all black, or atrorubent. 
The fame place afforded alfo fome variety of Foffil Shells, 
and plenty of Cuthbert's Beads, which were very fmall 
in comparifon of what are found throughout the North 
of England. We alfo found there a large Teftaceous 
Body, not to be compar’d as to its Figure with any fort 
of Shell yet defcrib’d : Together with fome embofled 
Reprefentations of pieces of the Sceletons of Eels, or 
fome leffer Filh. All thefe were in Limeftone 5 but 
Advancing about 3 Miles further into Brecknockfbire , 
at a place call’d Lhan Elhi we fearched fome Coal and 
Iron Mines. Their Coal-works were not Pits funk like 
Draw-wells $ but great Inroads made into the fide of the 
Hill, fo that three or four Horfemen might ride in a- 
breaft. The Top is fupported with Pillars left at cer- 
tain diftances 5 and they make their By-lanes (as in o- 
ther Pits) as the Vein requires. The Slat above this 
Coal afforded only Stalks of Plants, which did not 
a S f f 2 fave, 
