46 S. Mis. 53. 



The fourth volume, also issued and distributed in 1852, consists of a 

 single work, viz: Grammar and Dictionary of the Dacota Language. 

 Edited by the Rev. S. R. Riggs ; pp. 41G. 



Several Memoirs, intended lor the 5th and 6th volumes, are in press, as 

 follows : 



Memoir on the Fossil American Ox. By Dr. Joseph Leidy. 

 Plant^e Wrightianae, Part II. By Dr. Asa Gray. 

 North American Alga3, Part II. By Dr. Harvey. 

 Plantse Fremontianae. By Dr. John Torrey. 



In addition to these, the following are ready to go to press : 



Nervous Anatomy of Rana Pipie?is. By Dr. J. Wyman. 

 Winds of the Northern Hemisphere. By Prof. J. H. Coffin. 

 A Fauna and Flora of Animals. By Dr. J. Leidy. 

 Fossil Vertebrata of Nebraska. By Dr. Leidy. 

 Nearly all the illustrations of these have been completed, and are 

 ready for binding with the text, whenever ready. 



Of octavo works, the following have appeared : 



1. The Sixth Annual Report of the Board of Regents of the Smith- 

 sonian Institution ; pp. 100. 



2. Directions for Making Collections in Natural History ; pp. 24. 



3. On the Construction of Catalogues of Libraries and of a General 

 Catalogue. By Prof C. C. Jewett ; pp. 78. 



4. Meteorological and other Tables. B}' Prof A. Gu3'ot; pp. 176. 



5. Catalogue of Paintings in the Stanley Gallery ; pp. 76. 

 Making a total of 980 pages quarto and 514 octavo. 



There are now in press — 



1. Catalogue of Serpents in the Museum of the Smithsonian Insti- 

 tution. 



2. Bibliography of American Natural History for 1852. 



A second edition cf the Report on Recent Improvements in the 

 Chemical Arts, has been called for by the public and distributed. 



In addition to the above, a large number of circulars, calling for or 

 communicating information on a great variety of subjects, has been 

 issued. 



II.— DISTRIBUTION OF PUBLICATIONS AND EXCHANGES. 

 {a.) FOREIGN DISTRIBUTION. 



The experience of the year 1852 has given gratif^dng evidence of 

 the efficiency of the system of foreign exchanges now followed by the 

 Smithsonian Institution, The receipts for the year will be found to have 

 increased nearly eight-fold over those of 1851. The undertaking on the 

 part of the Smithsonian Institution to receive parcels from the various 

 societies in the United States, and distribute them to its agents 

 in Europe, and to receive their foreign exchanges in return, has been 

 found productive of the happiest results. The scientific relations be- 

 tween the two worlds have been very much strengthened in this way, 

 and a correspondence established of the greatest importance to all 

 parties. It may safely be estimated that at least three-fourths of the 



