APPENDIX TO THE REPORT OF THE SECRETARY. 
REPORT OF THE ASSISTANT SECRETARY. 
SMITHSONIAN INSTITUTION, 
Washington, D. C., December 21, 1864. 
Sir: I beg herewith to present a report, for 1864, of the operations which — 
you have intrusted especially to my charge; mainly, those relating to ex- 
changes and the collections. 
Very respectfully, your obedient servant, 
SPENCER F. BAIRD, 
Assistant Secretary Smithsonian Institution. 
_ 
Prof. JoserpH Henry, LL.D., 
Secretary Smithsonian Institution. 
EXCHANGES AND TRANSPORTATION. 
The distribution of publications of the year included volume xiii of the 
Smithsonian Contributions to Knowledge, of 558 pages and seven plates; 
volume v of Miscellaneous Collections, of 774 pages; and the Annual Report 
of the Institution for 1862, of 450 pages ; making an aggregate of 1,782 pages 
and seven plates. 
As heretofore, the packages transmitted and received included all the ex- 
changes between the learned institutions and men of science generally of 
America and other parts of the world, the details of which are shown in the 
accompanying tables. As in previous years, the Institution has to make its 
grateful acknowledgments for services rendered in connexion with these opera- 
tions by the Cunard, the Bremen, the Hamburg, and the Pacific Mail Steam- 
ship lines; the Panama Railroad Company, the Adams Express Company, 
the Hudson’s Bay Company, &e. Privileges similar to those granted heretofore 
by the Adams Express Company have, during the year, been also extended 
by the Harnden and the American Express Companies. 
To Messrs. Hiram Barney and Simeon Draper, collectors of the port of New 
York, and Mr. George Hillier, of the custom-house ; and to Mr. Samuel Hub- 
bard, of the Pacific Mail Steamship Company, in San Francisco, the Institu- 
tion continues to be under many obligations for important aid extended in con- 
nexion with its system of exchanges and transportation. Its thanks are also 
due to Messrs. F. Probst & Co. of New York, and their correspondents in 
Vera Cruz, Messrs. Lefimann and Gutheil, for valuable assistance in the ex- 
changes with Mexico. 
The regular foreign agents of the Institution—Dr. Felix Fligel, of Leipsic; 
Messrs. Gustave Bossange & Co., of Paris; Mr. William Wesley, of London; 
and Mr. Frederick Miiller, of Amsterdam—have continued to discharge their 
duties to the full satisfaction of the Institution. | 
