33d CONGRESS, 

 x 1st Session 



IRESS, A 



ion. ) j 



THE 



U. S, NAVAL ASTRONOMICAL EXPEDITION 



THE SOUTHERN HEMISPHERE, 



THE YEARS 1849-'50-'51-'52. 



Lieut. ARCHIBALD MAOU.\E, } 



Master S. LEUVAHD PHBLPS, > Assistants. 



Captain's Clerk E. R. SMITH, ) 



VOLUME III. 



OBSERVATIONS TO DETERMINE THE SOLAR PARALLAX. 



BY LIEUT. J. M. GILLISS, LL.D. 



SUPERINTENDENT. 



WASHINGTON: 



A. O. P. NICHOLSON, PRINTER. 



MDCCCLVI. 



