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Photograph

Dr. Babcock with Butterfat Tester

Date: 1926
Description: Dr. Stephen Babcock with an electric centrifuge butterfat tester.
Photograph

Kjeldahl Apparatus

Date: 1926
Description: Special Kjeldahl apparatus in Dr. Edwin B. Fred's laboratory.
Photograph

Seed Corn Experiment

Date: 1926
Description: Field of seed corn experiment.
Photograph

Comparative Infection of "Yellows" in Alfalfa

Date: 1926
Description: Comparative infection of "yellows" in a field of alfalfa and sweet clover.
Photograph

Concrete Chimney Experiment

Date: 1926
Description: Concrete chimney experiment at the University of Wisconsin.
Photograph

Experimental Farmall Tractor

Date: 1926
Description: Engineering photograph of an experimental McCormick-Deering Farmall Regular tractor.

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