EEPOET OF THE SECBETAEY. 



87 



lications sent as exchanges or doHations. Books sold or ordered through 

 tlie trade are, therefore, necessarily excluded. 



8. Specimens are not accepted for distribution, except when permission has 

 lieen obtained from the Institution. 



Respectfully submitted. 



C. G. Abbot, 



Assistant Secretary, 

 In Charge of Library and Exchanges. 

 Dr. Charles D. Walcott, 



Secretoi-y, Smithsonian InstitiUion. 



