OF CORNWA LL. 129 
(engrafted as they are by tin and copper) are either delighted with 
or even fenfible of the one, or at all the richer for the other. 
Of bifmuth, fpeltre, zink, naptha, antimony, lapis calaminaris, 
and molybdaena, I have received fpecimens from feveral parts of 
Cornwall : they are juft enough to whet the appetite of the curious, 
but hitherto not enough to awake the induftry or fix the attention 
of the owners. 
We call bifmuth tin-glafs, and feveral bits at feveral times, pure Bifmuth. 
as if in a metallic ftate, I have received from the parifh of St. Juft, 
but, put all together, they will fcarce make a pound weight : it is 
more plenty, though more dilperfed, in Mr. Beauchamp’s cobalt 
mine, in the parifh of Gwenap. 
Speltre ore I have had from a mine near St. Columb, and Dr. s P eitre. 
Woodward, Cat. vol. II. page 83, mentions fome from St. Merwin 
near Padftow. One lemimetallic fpecimen, which I have from 
Camborn, of a brown, cinereous colour, very clofe-grained, pon- 
derous, and of uniform ftru&ure, has been taken for zink \ 
Oi Naptha I have feen but one fpecimen, which came from Naptha. 
Tolgaric work, in the parifh of Camborn. 
In the parifh of Endelian there are feveral veins of antimony sect. n. 
mixed with fmall fpots of copper and fome lead, there called Rof- Antimony, 
carrock s (as Grew fays, Mufeum R. S. page 334) : thele veins 
run fometimes north and fouth, but oftener eaft and weft : the 
north and fouth veins are the biggeft ; and when the eaft and weft 
veins join, or crofs the former, they commonly make a bunch of 
ore from one root to two feet wide, all of folid antimony. Some 
antimony is now raifed in the lands of the Reverend Mr. Hearle, in 
St. Minver, a parifh adjoining to the former. Antimony has alfo 
been found in St. Auftel parifh, in St. Stephen’s at Howton, and in 
a place called by Dr. Woodward (Cat. vol. I. page 184) Barbary- 
work ; in St. Kew parifh alfo, as the fame author (Cat. vol. II. p. 20) 
informs 11s, and, I doubt not, is thrown away as ufelefs in a greater 
number of places ; but there are no workings on this mineral in the 
county at prefent, confiderable enough to be more particularly men- 
tioned. It need only be obferved, that antimony is reckoned to be 
of an intermediate nature betwixt gold and filver, and by the tex- 
ture, and weight of its ore, fo likely to contain metal, that the 
late famous Dr. Boerhave tried for a whole year to extract from it a 
real metal, but without fuccefs c . 
By Mr. Ornfkolcl, a learned Swede. of that neighbourhood. See the Map annexed. 
from a Manor of ancient note there, I c Theor. Chem. page 13. 
mppofe, more abounding in antimony than the reft 
L 1 
Manganefe, 
