PREFACE. 



The following classification has been prepared by Mr. Goode to facili- 

 tate the work of collecting and arranging the material gathered by the 

 National Museum to illustrate the resources of the United States as 

 derived from the animal kingdom, in the International Exhibition of 

 1870. It is also intended to indicate the general character of the 

 articles which are to be included in this branch of the exhibition. 



Contributions of specimens of the different classes enumerated are 

 much desired, for the purpose of making the proposed display complete, 

 and should be addressed to the Smithsonian Institution, Washington, 

 D. C. 



JOSEPH HENRY, 

 Secretary Smithsonian Institution. 



