ADVERTISEMENT 



The present series, entitled " Smithsonian Miscellaneous Collec- 

 tions," is intended to embrace all the octavo publications of the Insti- 

 tution, except the Annual Report. Its scope is not limited, and the 

 volumes thus far issued relate to nearly every branch of science. 

 Among- these various subjects zoology, bibliography, geology, 

 mineralogy, and anthropology have predominated. 



The Institution also publishes a quarto series entitled " Smith- 

 sonian Contributions to Knowledge." It consists of memoirs based 

 on extended original investigations, which have resulted in important 

 additions to knowledge. 



CHARLES D. WALCOTT, 

 Secretary of the Smithsonian Institution. 



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