780Ci7705: Water tower and boxes 1 to 6 of apparatus used for Ralph Parshall's study of evaporation from moist soils
System uses Mariotte regulation feed and was used for Ralph Parshall's unpublished study of evaporation from moist soils. Each tank (inside wooden boxes) supplies the circular evaporation pan directly in front of it. 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. Looking north toward west side of CSU's Oval. CSU's Forestry Building currently stands at this location. Plants growing in evaporation pans. Note on envelope reads, "Pikes Peak negatives. Evaporation."