THE SMITHSONIAN INSTITUTION. 7 



54. Downes. — Occultations of Planets and Stars by the Moon 

 during the year 1853. Computed by John Downes, at the expense 

 of the fund appropriated by Congress for the establishment of a 

 Nautical Almanac, and published by the Smithsonian Institution. 

 1853. 4to. pp. 36. (S. C. vi.) Trice 20 cents. 



3. Walker. — Researches relative to the Planet Neptune. By 

 Sears C. Walker, Esq. ' 1850. 4to. pp. 60. (S. C. n.) Price 

 50 cents. 



4. Walker. — Ephemeris of Neptune for the Opposition of 1848. 

 By Sears C. Walker, Esq. 1849. 4to. pp. 8. 



5. Walker. — Ephemeris of the Planet Neptune for the date 

 of the Lalande Observations of May 8 and 10, 1795, and for the 

 Opposition of 1846, '47, '48, and '49. By Sears C. Walker, Esq. 

 April, 1849. 4to. pp. 32. (S. C. n.) Price 20 cents. 



6. Walker. — Ephemeris of the Planet Neptune for the year 



1850. By Sears C. Walker, Esq. April, 1850. 4to. pp. 10. 

 (S. C. ii.) Price 10 cents. 



7. Walker. — Ephemeris of the Planet Neptune for the year 



1851. By Sears C. Walker, Esq. Dec. 1850. 4to. pp. 10. 

 (S. C. ii.) Price 10 cents. 



24. Walker. — Ephemeris of the Planet Neptune for the year 



1852. By Sears C.Walker, Esq. 1853. 4to.pp. 10. (S. C. m.) 

 Price 10 cents. 



18. Gould. — On the History of the Discovery of the Planet 

 Neptune. By B. A. Gould, Jr. 1850. 8vo. pp. 56. Price 25 

 cents. 



79. Runkle. — New Tables for determining the Yalues of the 

 Coefficients in the Perturbative Functions of Planetary Motion, 

 which depend upon the ratio of the mean distances. By John D. 

 Runkle, Assistant in the office of the American Ephemeris and 

 Nautical Almanac. Nov. 1856. 4to. pp. 64. (S. C. ix.) Price 

 50 cents. 



94. Runkle. — Asteroid Supplement to New Tables for deter- 

 mining the value of b , and its derivatives. By John D. Runkle. 

 May, 1857. 4to. pp. 72. (S. C. ix.) Price 50 cents. 



100. Gilliss. — An Account of the Total Eclipse of the Sun 





