410 



ANNUAL OF SCIENTIFIC DISCOVERY. 



TABLE OF GEOGRAPHICAL POSITIONS, DETERMINED FROM ASTRO- 

 NOMICAL OBSERVATIONS, BY BREVET LIEUTENANT-COLONEL J. D. 

 GRAHAM, U. S. COUPS TOPOGRAPHICAL ENGINEERS, DURING THE 

 YEARS 1857, 1858, AND 1859. 



Many of the tables of the latitudes and longitudes of places in the United 

 States are made up by mixing, indiscriminately, the results announced by 

 astronomers and geographers, with the imperfect ones which are derived from 

 measurements, with the dividers, upon the most convenient maps within reach, 

 without in any case giving credit or authorities. This is a great injustice to 

 a class whose labors are prosecuted through many a sleepless night, often 

 amidst severe exposures to the weather arid climate incident to our vast extent 

 of territory, solely in pursuit of those truths upon which its accurate geo- 

 graphical delineation must depend. 



The accompanying table, therefore, of latitudes and longitudes of places in 

 the West, derived from recent astronomical observations made by Lieuten- 

 ant-Colonel Graham, U. S. A., will, it is believed, from their undoubted 

 accuracy, be regarded as a valuable contribution to American geographical 

 statistics. - Ed. 



