PT - JOURNAL ARTICLE AU - M. Carey Lea TI - On the nature of the action of light upon iodid of silver AID - 10.2475/ajs.s2-42.125.198 DP - 1866 Sep 01 TA - American Journal of Science PG - 198--205 VI - s2-42 IP - 125 4099 - http://www.ajsonline.org/content/s2-42/125/198.short 4100 - http://www.ajsonline.org/content/s2-42/125/198.full SO - Am J Sci1866 Sep 01; s2-42