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, mineralogy, and 

 anthropology have predominated. 



The Institution also publishes a quarto series entitled " Smithsonian 

 Contributions to Knowledge." It consists of memoirs based on ex- 

 tended original investigations, which have resulted in important addi- 

 tions to knowledge. 



CHARLES D. WALCOTT, 

 Secretary of the Smithsonian Institution. 



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