Useful Knowledge: Minerals. Volume 1 (of 3)., by William Bingley 57898 [Subtitle: or A familiar account of the various productions of nature] [Link: http://www.gutenberg.org/5/7/8/9/57898 ] [Files: ; 57898-0.txt; 57898-h.htm] Thanks to Chris Curnow, Barry Abrahamsen, and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Al