pl23_theb1324.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23theb1324jpg-0Description
Underground magnetic observatory built at the University of Wisconsin in 1870's.Built under direction of Coast Survey.Observations made to Coast Survey specifications.One of many academic geophysical observatories built under guidance of C&GS;
Credit
Harper's New Monthly Magazine, March 1879, p. 520. NOAA Central Library
Display Date
1879
Location
Wisconsin, Madison
Collection
Historic Coast & Geodetic Survey
Keywords
Geophysics
Geomagnetism