Smithsonian Institution, 
International Exchanges, 
Washington, D. C. 
and forwarded with carriage charges to Washington prepaid. 
2. In forwarding a consignment the sender should mail a letter to the Insti¬ 
tution stating by what route it is being shipped, and the number of boxes or par¬ 
cels comprising the shipment. A list giving the name and address of each con¬ 
signee should also be furnished. It is important that this request be complied with 
in order that a detailed record of the contents of consignments may be kept in the 
files of the Exchange Office for use in answering inquiries concerning the forward¬ 
ing of packages. 
3. Packages should be legibly and fully addressed, using, when practicable, the 
language of the country to which they are to be forwarded. In order to avoid any 
possible dispute as to ownership, names of individuals should be omitted from pack¬ 
ages intended for societies and other establishments. 
4. Packages should be securely wrapped, using cardboard, if necessary, to 
protect plates from crumpling. 
5. Letters are not permitted in exchange packages. 
6. If donors desire acknowledgments, packages may contain receipt-forms to 
be signed and returned by the establishment or individual addressed. Should pub¬ 
lications be desired in exchange, a request to that effect may be printed on the 
receipt-form or on the package. 
7. The work carried on by the International Exchange Service is not in any 
sense of a commercial nature, but is restricted to the transmission of publications 
sent as exchanges or donations. Books sold or ordered through the trade are, there¬ 
fore, necessarily excluded. 
8. Specimens are not accepted for distribution, except when permission has 
been obtained from the Institution. 
For a list of bureaus or agencies through which the distribution of exchanges 
is effected see next page. Those in the larger countries and many of those in the 
smaller countries forward to the Smithsonian Institution reciprocal contributions for 
distribution in the United States. 
