AGENCY OF THE 
William Wesiep & Son, SMITHSONIAN INSTITUTION 
AND UNITED STATES GOVERNMENT 
SCIENTIFIC BOOKSELLERS SY PUBLISHERS. DEPARTMENTS. 
Important Works in Natural History and Physical Science for Sale, New and Second-hand. 
28, Essex Street, Strand, London.......: y OM OLY Gol 89 9 
peg tee, ow, Cou Brr Lge ; 
We ater oLLig 2 of Buy tyke Ooh tr fore prrrodrcoly 
ro dre cof Aareorin tung ke £ re lode il bee 
