Dr. Earl S. Johnston in the Division of Radiation and Organisms Laboratory

Summary

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.

Subject

• Johnston, Earl S (Earl Steinford) 1889-1947
• United States National Museum
• Smithsonian Astrophysical Observatory Radiation and Organisms Division
• Smithsonian Institution Building (Washington, D.C.)
• Century of Progress International Exposition (1933-1934 : Chicago, Ill.)

Notes

• See also MNH-11036F.
• See also Record Unit 95, Box 31A, Folder 36.

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

Date

• 1929
• Between 1929 and 1934

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 osiaref@si.edu
• No Known Copyright Restrictions

Topic

Form/Genre

Lantern slides

Local number

SIA Acc. 12-492 [SIA2012-6464]

Physical description

4 x 3.25;

Full Record

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