DOCUMENT 

 LIBRARY 



Woods Hole Oceanographic 

 Institution 



Copies of this publication may be obtained from the Publications Unit, U.S. Fish and Wildlife Service, 18th 

 and C Streets, N.W., Mail Stop 1111, Arlington Square Building, Washington, EKT 20240, or may be purchased 

 from the National Technical Information Service (NTIS), 5285 Port Royal Road, Springfield, VA 22161. 



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Cover credit: 



Sprague, Sgt. Charles. 1896. The Silva of North America. Vol. X. Houghton Mifflin, Boston. 



