432 PUBLICATIONS OF THE SMITHSONIAN INSTITUTION. 



gress, 1st Session. Senate Miscellaneous No. 120. Read July 29, 1850. 

 Ordered to be printed July 30, 1850. Svo., pp. 272. 



22. Plantse Wrigbtianse Texauo-Neo-Mexicanae. By Professor Asa Gray, 



M. D. Part I. Accepted for publication March, 1850. [March, 1852.] 4to., 



pp. 146, and 10 plates. (S. C m.) 



An account of a collection of plants made by Charles Wright in western Texas, New Mex- 

 ico, and Sonora, in the years 1H51 and 1852. 



23. Microscopical observations made in South Carolina, Georgia, and Florida. 

 By Professor J. W. Bailey. Accepted for publication December 1, 1850. [1851.] 

 4to., pp. 48, and 3 plates. (S. C. ii.) 



24. Appendix I. to vol. III. of the Smithsonian Contributions to Knowledge ; 

 containing an ephemeris of the planet Neptune for the year 1852. By Sears C. 

 Walker, esq. [1853.] 4to., pp. 10. (S. C. lU.) 



25. Notices of public libraries in the United States of America. By Charles 

 C. Jewett, librarian of the Smithsonian Institution. Printed by order of Con- 

 gress as an appendix to the fourth annual report of the Board of Regents of 

 the Smithsonian Institution. 1851. 8vo., pp. 210. 



26; Smithsonian Contribuiions to Knowledge. Vol. II. 185]. 4to., pp. 

 464, and 24 plates. 



CONTENTS. 



(3.) Walker. Researches relative to Neptune. 

 (12.) Lieber. Vocal sounds of Laura Brid^eman. 

 (20.) Bailey. Microscopical soundings off Atlantic coast. 

 (13.) Ellet. Physical geography Mississippi valley and improvement of rivers. 

 (14.) Gibbes. Mosasaurus and three allied genera. 

 (16.) Agassiz. Classification of insects from embryological data. 

 (17.) Hare. Explosiveness of nitre. 



(23. ) Bailey. Microscopical observations in South Carolina, Georgia, and Florida. 

 (15.) Squier. Aboriginal monuments of state of New York. 



(4.) Walker. Ephemeris of Neptune for 1848. 



(6. ) Walker. Ephemeris of Neptune for 1 850. 



(7.) Walker. Ephemeris of Neptune for 1851. 

 (11.) Downes. Occultations visible in the United States in 1851. 



27. On recent improvements in the chemical arts. By Professor James C. 

 Booth and Campbell Morfit. 1852. 8vo., pp. 216. (M. C. ii.) 



28. Fifth annual report of the Board of Regents of the Smithsonian Insti- 

 tution, to the Senate and House of Representatives, showing the operations, 

 expenditures, and condition of the Institution, during the j^ear 1850. Special 

 session, March, 1851. Senate Miscellaneous No. 1. Read March 1, 1851. 

 Ordered to be printed March 7. 1851. 8vo., pp. 326. 



29. Occultations visible in the United States during the year 1852. Com- 

 puted bj' John Downes, at the expense of the fund appropriated by Congress for 

 the establishment of a Nautical Almanac, and published by the Smithsonian 

 Institution. 1851. 4to., pp. 34. (S. C. in.) 



30. Contributions to the natural history of the fresh water fishes of North 

 America. By Charles Girard. I — A monograph of the cottoids. Accepted 



