RT Journal Article SR Electronic T1 On the nature of the action of light upon iodid of silver JF American Journal of Science JO Am J Sci FD American Journal of Science SP 198 OP 205 DO 10.2475/ajs.s2-42.125.198 VO s2-42 IS 125 A1 M. Carey Lea YR 1866 UL http://www.ajsonline.org/content/s2-42/125/198.abstract AB