THE SMITHSONIAN INSTITUTION. 37 



7. The Ancient Fauna of Nebraska, or a Description of Remains of 



Extinct Mammalia and Chelonia, from the Mauvaises Terres of 

 Nebraska. By Joseph Leidy, M. D., Professor of Anatomy in the 

 University of Pennsylvania ; pp. 126, and twenty-five plates. 



8. Occultations for 1853. 



Volume V contains pages 538 — plates 45 



Volume VI contains pages 476 — plates 53 



Or an aggregate of quarto publications 1,014 98 



Of these volumes, volume V has been distributed. Volume VI has 

 not yet been bound up, but will be delivered and distributed early in 

 1854. 



In addition to the above, several memoirs for the seventh volume are 

 in hand, and the engravings nearly complete ; among these are : 



Chap])clls7nith, on the Tornado of Indiana. 



Leidy, on the Extinct Sloths of North America. 



Bailey, on New Microscopic Forms. 



The octavo publications have also been of considerable extent, and 

 are as follows : 



Seventh Annual Report of the Board of Regents of the Smithsonian 

 Institution, for 1852 ; pp. 96. 



Report of the Secretary of the Smithsonian Institution, for 1852; 

 pp. 31. 



Catalogue of North American Reptiles in the Museum ot the Smith- 

 sonian Institution. Part 1 — Serpents. B}- S. F. Baird and C. Girard, 

 pp. 188. 



Catalogue of the described Coleoptera of the United States. By 

 Frederick Ernst Melsheimer, M. D. Revised by S. S. Haldeman and 

 .1. L. Le Conte, pp. 190. 



In addition to these a large number of circulars, relating to various 

 subjects, has been printed. 



2. DiSTRIBUTIONOF PUBLICATIONS AND EXCHANGES. 



(a.) Fcrreign Distributions and Exchanges. 



The records of Ibreign distributions and exchanges for the year 1853, 

 show a large increase, both in transmissions and receipts, over 1852, 

 thus exhibiting a steady enlargement of the sphere and extent of ope- 

 rations, gratifying to all who are interested in the speedy diffusion of 

 knowledge throughout the world. As in past years, the Smithsonian 

 Institution has been a most important medium of communication be- 

 tween the American scientific societies and their European correspon- 

 dents. 



The names of the institutions making use of the facilities afforded by 

 the Smithsonian Institution, as well as the complete statistics of the 

 whole business, will be found detailed in the accompanying tables. 



The packages, amounting in the aggregate to 1,604, bearing 567 

 addresses, weighing 12,220 pounds, and occupying nearly 400 cubic 

 feet of capacity, all left the Institution in May, and for a large number 



