RT Journal Article SR Electronic T1 On the so-called "barrel quartz" of Nova Scotta JF American Journal of Science JO Am J Sci FD American Journal of Science SP 104 OP 106 DO 10.2475/ajs.s2-38.112.104 VO s2-38 IS 112 A1 Benjamin Silliman YR 1864 UL http://www.ajsonline.org/content/s2-38/112/104.abstract AB