1. Lt. (j.g.) C.E.C., U.S. Navy; formerly, Grad. Research Asst., W. M. Keek Laboratory of Hydraulics and Water Resources, California Institute of Technology, Pasadena, Calif.
2. Prof. of Hydraulics, W. M. Keck Laboratory of Hydraulics and Water Resources, California Institute of Technology, Pasadena, Calif.