Royal institutions being proposals for articles to establish and confirm laws, liberties, & customs of silver & gold mines, to all the king's subjects, in such parts of Africa and America, which are now (or shall be) annexed to, and dependant on the crown of England : with rules, laws and methods of mining and getting precious stones, the working and making of salt-petre, and also, the digging and getting of lead, tin, copper, and quick-silver oars [sic] ... / by Thomas Houghton ...