5-18 CONGRESSIONAL PKOCEEDINOS. 



MICROSCOPICAL SCIENCE. 



Microscopical Examination of Soundings made by the U. S. Coast Survey off the 

 Atlantic coast of the United States. By Prof. J. W. Bailey. 



Microscopical Observations made in South Carolina, Georgia, and Florida. By 

 Prof. J. W. Bailey. 



Notes on New Species and Localities of Microscopical Organisms. By Prof. J. W. 

 Bailey. 



A Flora and Fauna within Living Animals. By Josei>h Leidy, IVL D. April, 1853. 



ZOOLOdY AND PHVSIOLOCiV. 



The Classification of Insects from p]mbryological Data. By Prof. Louis Agassiz. 

 1850. 



Catalogue of the Described Coleoptera of the Ignited States. By Frederick Ernst 

 Melsheimer, M. D. ; revised by S. S. Haldeman and J. L. Le Conte. 



Synopsis of the 'Marine Invertebrata of Grand Manan, or the Region about the 

 mouth of the Bay of Fundy, New Brunswick. By W. Stimpson. 



Contributions to the Natural History of the Fresh Water Fishes of North Amer- 

 ica. By Charles Girard. 



Anatomy of the Nervous System of Rana pipiens, L. By Jeffries Wyman, M. D. 



Catalogue of North American Reptiles, in the JMuseum of the Smithsonian Insti- 

 tution. Part I — Serpents. By S. F. Baird and C. Girard. 



Plantie Wrightiante Texano-Neo Mexicante. By Asa Gray, M. D. Part I. Pp. 

 146, and 10 plates. 



Plantse Wrightianse Texano-Neo Mexicanse. Part II — An account of a collection 

 of plants, made by Charles Wright, in western Texas, New Mexico, and Sonora, in 

 the years 1851 and 1852. By Asa Gray, M. D. Pp. 120, and 4 plates. 



Nereis Boreali- Americana, or Contributions to a History of the Marine Algge 

 of North America. Part I — Melanospermea?. By William Henry Harvey, M. D., 

 M. R. I. A. Pp. 152, and 12 colored plates. 



Nereis Boreali-America, or Contributions to a History of the Marine Algse of 

 North America. Part II — Rhodospermis. By William H. Harvey, M. D., M. R.I. A. 

 Pp. 262, and 24 plates, colored. 



Plantfe Fremontianae; or description of plants collected by Colonel J. C. Fremont 

 in California. By John Torrey, F. L. S. 1853. Pp. 24, and 10 plates. 



Observations on the Batis Maritima of Linnseus. By John Torrey, F. L. S. 



On the Darlingtonia Californica; a new pitcher plant from northern California. 

 By John Torrey, F. L. S. 



PALAEONTOLOGY. 



A memoir on Mosasaurus, and the three allied new genera, Holcodus, Conosaurus, 

 and Amphorosteus. By Robert W. (iibbes, M. D. 



Memoir upon the Extinct Species of Fossil Ox. By Jo.seph Leidy, M. D. 



The Ancient Fauna of Nebraska; or a description of remains of extinct Mamma- 

 lia and Chelonia from the Mauvaises Terres of Nebraska. By Joseph Leidy, M. D. 

 Pp. 124, and 25 plates. 



HIBLIOGRAPHY. 



Bibliography of American Natural History for the year 1851. By Charles Girard. 

 Notices of Public Libraries in the United States. By Prof. C. C. Jewett. 

 Directions for Collecting, Preserving, and Transporting Specimens of Natural His- 

 tory. Prepared for the use of the Smithsonian Institution. Two editions. 



