RULES OF DISTRIBUTION. vii 



may be desired, a small number is set aside, and sold by the Insti- 

 tution, or its agents, at the prices affixed, which are intended 

 merely to cover the actual cost of their publication. They may 

 be obtained either directly from the Institution or of its general 

 agents, Messrs. D. Appleton & Co., New York. 



JOSEPH HENRY, 



Secretary, S. I. 



SMITHSONIAN INSTITUTION, 



WASHINGTON, June, 1862. 



RULES OF DISTRIBUTION. 



The following rules have been adopted for the distribution of 

 the series of the Smithsonian Contributions, and Miscellaneous 

 Collections: 



1. They are to be presented to all learned societies of the first 

 class which publish Transactions, and give copies of these, in 

 exchange, to the Institution. 



2. To all foreign libraries of the first class, provided they give 

 in exchange their catalogues and other publications, or an equiva- 

 lent from their duplicate volumes. 



3. To all the colleges in actual operation in this country, provided 

 they furnish, in return, meteorological observations, catalogues of 

 their libraries and of their students, and all otner publications 

 issued by them relative to their organization and history. 



4. To all States and Territories, provided they give, in return, 

 copies of all documents published under their authority. 



5. To all incorporated public libraries in this country, not in- 

 cluded in any of the foregoing classes, now containing more than 

 10,000 volumes; and to smaller libraries, where a whole State or 

 large district would be otherwise unsupplied. 



Institutions devoted exclusively to the promotion of particular 

 branches of knowledge, receive such articles published by the In- 

 stitution as relate to their objects. Portions of the series are also 

 given to institutions of lesser grade not entitled to the full series, 

 and also to the meteorological correspondents of the Smithsonian 

 Institution. 



