PT - JOURNAL ARTICLE AU - Smith, H. L. TI - On a new illuminator for opaque objects under high powers of the microscope AID - 10.2475/ajs.s2-40.119.238 DP - 1865 Sep 01 TA - American Journal of Science PG - 238--241 VI - s2-40 IP - 119 4099 - http://www.ajsonline.org/content/s2-40/119/238.short 4100 - http://www.ajsonline.org/content/s2-40/119/238.full SO - Am J Sci1865 Sep 01; s2-40