SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE. 



THE 



LAW OF DEPOSIT 



FLOOD TIDE: 



ITS DYNAMICAL ACTION AND OFFICE. 



CHARLES HENRY DAVIS, A.M., A.A.S. M.A.P.S. 



LIEUTENANT U. S. NAVY. 



ACCEPTED FOR PUBLICATION 



BY THE SMITHSONIAN INSTITUTION, 



DECEMBER, 1E51. 



