Copies 



2 Australian Scientific Research Liaison Office, Washington, D.C. 



3 Hydrodynamics Laboratory, National Research Laboratory, Ottawa, 



Canada 



Dr. P. Ursell, Trinity College, Cambridge, England 



Dr. Vandry, Admiralty Research Laboratory, Teddington, England 



Prof. J.K. Lunde, Skip smod ell tank en, Tyholt Trondheim, Norway 



Prof. L. Troost, Superintendent, Netherlands Ship Model Basin, 

 Haagsteeg 2, Wageningen, The Netherlands 



Directeur du Bassin d'Essais Des Carenes, 6, Boulevard Victor, 

 Paris XV, France 



Director, Swedish State Shipbuilding Experimental Tank, Goteborg 24, 

 Sweden 



Dr. G. Hughes, National Physical Laboratory, Teddington, Middlesex, 

 England 



Editor, Journal of the British Shipbuilding Research Association, 5, 

 Chesterfield Gardens, Curzon St., London W. "1, England 



Editor, Physics Abstracts, Institution of Electrical Engineers, Savoy 

 Place, London W.C. 2, England 



Editor, Index Aeronauticus, Ministry of Supply, Millbank, London 

 S.W. 1 , England 



Head, Aerodynamics Department, Royal Aircraft Establishment, Farn- 

 borough, Hants, England 



Head, Aerodynamics Division, National Physical Laboratory, Teddington, 

 Middlesex, England 



Head, Aeronautics Department, Imperial College, London, S.W. 7. 

 England 



Head, College of Aeronautics, Cranfield, Bletchley, Bucks, England 



Prof. J. Kampe de Feriet, Faculte' des Sciences, Universite' de Lille, 

 Lille (Nord), France 



Directeur, Laboratoire Dauphinois d'Hydraulique des Ateliers Neyrpic, 

 Avenue de Beauvert , Grenoble (Isere), France 



Office National d' Etudes et de Recherches Ae'ronautiques 3, rue Leon 

 Bonnat, Paris XVI, France 



Prof. D.P. Riabouchinsky, Centre National de la Recherche 

 Scientif ique, 13 Quai d'Orsay, Paris VII, France 



Prof. J.M. Burgers, Laboratorium Voor Aero-En Hydrodynamica , Nieuwe 

 Laan 76, Delft, The Netherlands 



Dr. R. Timman, National Luchtvaartlaboratorium, Sloterwag 145, 

 Amsterdam, The Netherlands 



Director, Aeronautical Research Institute of Sweden, Ranhammarsvagen 

 12, Ulsvunda, Sweden 



Prof. J. Ackeret, Institut fur Aerodynamik Der Eidgenossiche 

 Technische Hochschule, Zurich, Switzerland 



Dr. L. Malavard, Office National d'Etudes et de Recherches Aero- 

 nautiques, Chatillon, Paris, France 



