 | George Abbott (Jun.) - 1833 - 246 páginas
...several of our mines in Devon, Cornwall, and Cumberland."— BOYLE, in his Useful Philosophy, says, " A friend of mine found, in his own land, a parcel of Ore which seemed to be Copper. After fusion it yielded very good Copper, but the person to whom he committed... | |
 | Joseph Yelloly Watson - 1843 - 106 páginas
...because of its holding so much silver and gold in the ore." Boyle, in his " Useful Philosophy," says, " A friend of mine found, in his own land, a parcel of ore, which seemed to be copper. After fusion it yielded very good copper, but the person to whom he committed... | |
 | 1849 - 604 páginas
...Chemical Essays, vol. iv. p. 75. t 21 Henry VIII. c. 10. Boyle, in his " Useful Philosophy," says, " A friend of mine found, in his own land, a parcel of ore, which seemed to be copper. After fusion, it yielded very good copper ; but the person to whom he committed... | |
 | John Calvert - 1853 - 364 páginas
...evident that there is in copper naturally gold and silver| |. Boyle in his " Useful Philosophy," says: " A friend of mine found in his own land a parcel of ore, which seemed to be copper. After fusion it yielded very good copper, but the person to whom he committed... | |
 | John Calvert (mineral surveyor.) - 1853 - 360 páginas
...evident that there is in copper naturally gold and silver||. Boyle in his " Useful Philosophy," says : " A friend of mine found in his own land a parcel of ore, which seemed to be copper. After fusion it yielded very good copper, but the person to whom he committed... | |
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Useful Philosophy," says: " A friend of mine found in his own land a parcel of ore, which seemed to be copper. After fusion it yielded very good copper, but the person to whom he committed the examination being extraordinary skilful, found besides the... 