OF THE SMITHSONIAN INSTITUTION. 6 



REGULAR SERIES. 



1. Ancient Monuments of the Mississippi Valley ; comprising the results 



of extensive original surveys and explorations. By E. G. Squier 

 and E. H. Davis. 1848. '4to., pp. 346, 207 woodcuts, 48 plates. 



IS. C. I.) 



2. Smithsonian Contributions to Knowledge. Vol. I. 1848. 4to., pp. 



360, 207 woodcuts, 48 plates. 



CONTKNTS. 



Squier and Davis. Ancient Monuments, Mississippi Valley. No. 1. 



3. Researches relative to the Planet Neptune. By Sears C. Walker. 



1849. 4to., pp. 60. (S. C. ii.) 



4. Ephemeris of the Planet Neptune for the Opposition of 1848. By 



Sears C. Walker. 1848. 4to , pp. 8. (S. C. ii.) 



5. Ephemeris of the Planet Neptune from the date of the Lalande Obser- 



vations of May 8 and 10, 1795, and for the Opposition of 1846, '47, 

 '48, and '49. By Sears C. Walker. April, 1849. 4to., pp. 32. 

 (S. C. II.) 



6. Ephemeris of the Planet Neptune for the year 1850. By Sears C. 



Walker. April, 1850. 4to., pp. 10. (S. C. ii ) 



7. Ephemeris of the Planet Neptune for the year 1851. By Sears C. 



Walker. December, 1850. 4to., pp. 10. (S. C. ii.) 



8. * Occultations visible in the United States during the year 1848. By 



John Downes. 1848. 4to., pp. 12. 



9. * Occultations visible in the United States during the year 1849. By 



John Downes. 1848. 4to., pp. 24. 



10. * Occultations visible in the United States during the year 1850. By 



John Downes. 1849. 4to., pp. 26. 



11. Occultations visible in the United States during the year 1851. By 



John Downes. October, 1850. 4to., pp. 26. ,S. C. ii.) 



12. On the Vocal Sounds of Laura Bridgman, the Blind Deaf Mute at 



Boston ; compared with the Elements of Phonetic Language. By 

 Francis Lieber. 1850. 4to., pp. 32, one plate. (S. C. ii.) . 



13. Contributions to the Physical Geography of the United States. Part 



I. On the physical geography of the Mississippi valley, with sug- 

 gestions for the improvement of the navigation of the Ohio and, 



* These three papers by Mr. Downes, Nos. 8, 9, 10, were not published in the series 

 of Contributions. 



