NATURE AND EXTENT OF FOULING OF SHIPS' 

 BOTTOMS ::::::::::: By J. Paul Visscher 



From BULLETIN OF THE BUREAU OF FISHERIES, Vol. XLIII, 1927, Part II 



Document No. lOSl : : : : : : : : : : : : : : : : : : : : : : 



JiT 



3 OCEAlsiOGRAPHIC INSTrrUTK}§^ 



PRICE 35 CENTS 

 Sold only by the Superintendent of Documents, U. S. Government Printing OfiBee, Washington, D. C. 



U. S. GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1928 



