Royal institutions [microform] : 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 dependent on, the crown of England : with rules, laws, and methods of mining, and getting of precious stones; the working and making of salt-petre; and also, the digging and getting of lead, tin, copper and quicksilver-oars [!] ... most humbly offered to the consideration of the King's most excellent Majesty & this present Parliament by Thomas Houghton ... by Thomas houghton ...