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Catalog Data

Johnston, Earl S (Earl Steinford) 1889-1947  Search this
United States National Museum  Search this
Smithsonian Astrophysical Observatory Radiation and Organisms Division  Search this
Smithsonian Institution Building (Washington, D.C.)  Search this
Century of Progress International Exposition (1933-1934 : Chicago, Ill.)  Search this
Physical description:
4 x 3.25;
Lantern slides
Between 1929 and 1934
See also MNH-11036F.
See also Record Unit 95, Box 31A, Folder 36.
Dr. Earl S. Johnston in the Division of Radiation and Organisms, located in the basement of the Smithsonian Institution Building, or Castle. Shown here is an apparatus for studying phototropism (bending toward light) of seedlings, in connection with experiments to determine effects of wave lengths of light on growth.
Cite as:
Smithsonian Institution Archives, Acc. 12-492, Image No. SIA2012-6464
Repository Loc.:
Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520
Local number:
SIA Acc. 12-492 [SIA2012-6464]
Restrictions & Rights:
No access restrictions Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at
No Known Copyright Restrictions
Data Source:
Smithsonian Institution Archives