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Copies 



2 Director, Ordnance Research Laboratory, Pennsylvania State College, 

 State College, Pa. 



2 Dr. R.T. Knapp, Director, Hydrodynamic Laboratory, California Insti- 

 tute of Technology, Pasadena 4, Calif. 



2 Dr. L.G. Straub, Director, St. Anthony Palls Hydraulic Laboratory, 

 University of Minnesota, Minneapolis 14, Minn. 



2 Director, Experimental Naval Tank, Department of Naval Architecture 

 and Marine Engineering, University of Michigan, Ann Arbor, Mich. 



2 Dr. V.L. Streeter, Illinois Institute of Technology, 3300 Federal 

 Street, Chicago 16, 111. 



2 Head, Department of Naval Architecture and Marine Engineering, 

 Massachusetts Institute of Technology, Cambridge 39. Mass. 



Dr. C.C. Lin, Department of Mathematics, Massachusetts Institute of 

 Technology, Cambridge 39. Mass. 



Director, Applied Physics Laboratory, Johns Hopkins University, 

 8621 Georgia Avenue, Silver Spring, Md. 



Prof. W. S. Hamilton, Technical Institute, Northwestern University, 

 Evans ton, 111. 



Prof. G. Birkhoff, Harvard University, Cambridge, Mass. 



Prof. K.E. Schoenherr, School of Engineering, Notre Dame University, 

 South Bend, Ind. 



Prof. W. Spannhake, Armour Research Foundation, 35 West 33rd Street, 

 Chicago 16, 111. 



Dr. W. Pell, Division of Applied Mathematics, Brown University, 

 Providence, R.I. 



Dr. J.V. Wehausen, Editor, Mathematical Reviews, Providence, R.I. 



Dr. C.H. Lee, U.S. Naval Postgraduate School, Annapolis, Md. 



Prof. C. Yih, Department of Civil Engineering, Colorado A and M 

 College, Fort Collins, Colo. 



Dr. D. Gilbarg, Department of Mathematics, Indiana University, 

 Bloomington, Ind. 



Prof. J. Vennard, Department of Civil Engineering, Stanford 

 University, Palo Alto, Calif. 



Prof. B.A. Bakhmeteff, Department of Civil Engineering, Columbia 

 University, New York 27, N.Y. 



Dr. G.F. Wislicenus, Mechanical Engineering Department, Johns Hopkins 

 University, Baltimore 18, Md . 



Librarian, American Society of Mechanical Engineers, 29 West 39th St., 

 New York l8, New York 



Librarian, American Society of Civil Engineers, 33 West 39th St., 

 New York 18, N.Y. 



Director, U.S. Waterways Experiment Station, Vicksburg, Miss. 



Dr. G.B. Schubauer, National Bureau of Standards, Washington, D.C. 



Director, Institute for Fluid Dynamics and Applied Mathematics, 

 University of Maryland, College Park, Md . , 1 for Dr. Weinstein 



