Copy letter from Colonel W Byrd, Virginia, to Mark Catesby ' Containing observations on American Vines, the Genseng [Ginseng], the Rattle Snake Root, the fascinating Power atrributed to the Rattele Snake, and of a Project to found a City at the Falls of James River, and a Colony of Switzers on his Land upon Roanoke. ' Read to the Royal Spociety on 12 January 1737/1738 27 June 1737