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 
1876. 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. 
