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Chromatoskiameter. After Holmgren, by Rose, Upsala

  Source   Anonymous. 1892. Harvard Psychological Laboratory in Dane Hall: Instruments for Experiments on Sight. Photograph. (Harvard University Archives - HUPSF Psychological Laboratories (7)) view the source
  People   Holmgren, Alarik Frithiof (1831 - 1897)
  Sites   Psychological Laboratory, Harvard University (1893)
  Related Literature   Münsterberg, Hugo. 1893. Psychological Laboratory of Harvard University. Cambridge, Mass.: University Press of Cambridge, Mass. (description and figure).
Jeffries, Benjamin Joy. 1879. Method of deciding the Precise Amount of Color-Blindness by Professor Holmgren´s Chromatoskiameter, or Color-Sense Tester. In: Color-Blindness: Its Dangers and its Detection. 241-250. Boston: Houghton.
Cohn, Hermann. 1879. Die Arbeiten des Herrn Professor Holmgren über Farbenblindheit und seine Kampfesweise. Breslau, table (fig.s 1 and 2).
Holmgren, Frithiof. 1878. Über die farbigen Schatten und die Farbenblindheit. Centralblatt für praktische Augenheilkunde 12: 272-275.
  Comment   See the same Chromatoskiameter on another photograph from this set.
  Description  
ISSN 1866-4784: reference - xlink