780Ci26: Wooden boxes, first box holding supply tank attached to glass tube and meter stick used for Ralph Parshall's study of evaporation from moist soils
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System uses Mariotte regulation feed and was used for Ralph Parshall's unpublished study of evaporation from moist soils. For more information see "48. Reports, Evaporation -- Soil Moisture, R.L. Parshall" in the Irrigation Research Papers, Water Resources Archive, CSU Archives and Special Collections.