93. Control Weir Data, Progress Report, Dec. 1926
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Data, correspondence between Ralph Parshall and J. C. Stevens, drafts, and final reports relating to single jump flumes and control weir experiments. Reports include Farmers' Bulletin 813 "Construction and Use of Farm Weirs" by Victor M. Cone and "Progress Report on the Control Weir or Critical Depth Flow Meter" by Ralph Parshall. Photographic prints of negatives 780Ca1201, 780Ca08, and 780Ca07 appear in "Progress Report on the Control Weir or Critical Depth Flow Meter".