I 
[ 445 ] 
Tynglafs. Reynolds . '. T 
Marcafita alba. Fahrenheit. 
Mineral, Cornifh, Alining like a Marcafite. 
Boyle. . . 
Calx of Lead. Boyle . 
"Spelter Solder, jf. C. . . 
Spelter. J. C. 
Cinnabar common. Boyle. 
Cinnabaris faditia. Mufschenb. (if not a 
miflake for the laft experiment) 8.200 
Cinnabar native, breaking in polidfd fur- 
faces like Talc. ‘Davies. 
D°. Perfian, breaking rough. Davies. 
D°. native. Boyle. 
Cinnabaris nativa. Mufschenb. 
Cinnabar native, very fparkling. Boyle. 
D°. native from Guinea. Davies. 
Cinnabar of Antimony. Harris. 
D°. another piece. Harris. 
D®. Boyle. .... 
Cinnabar Antimonii. Freind. 
Cinnabre d’Antimoine. Mufschenb. 
Lead Ore, rich, from Cumberland. Boyle. 
D?. Boyle. ... . . 
The reputed Silver Ore of Wales. J. C. 
The Metal thence extracted. J. C. 11.087. 
Regulus Antimonii. Item Martis et Veneris. 
Freind. . . . 
Id. Fahrenheit. 
Id. Harris. 
Id. per fe. Davies. . : 
Silver Ore, choice. Boyle. . . 
7-97* 
9.0 6 
8.940 
8.362 
y.o6s 
8.020 
7.710 
7.600 
7-176 
7 - 3 °° 
7.060 
6.280 
7.060 
7.043 
7.030 
6.666 
6.044 
7- *4o 
7.140 
7.464 
7. *00 
6.622 
6.600 
4.700 
7.000 
D°. 
