196 THE HISTORY OF SCIENCE 



the discovery made by Galle must be regarded as a 

 happy accident. This view, however, has not been 

 sustained. 



REFERENCES 



Sir Robert Ball, Neptune's Jubilee Year, Scientific American, 



Supplement, Oct. 10, 1896. 



Sir Robert Ball, The Story of the Heavens, chap. xv. 

 B. A. Gould, Report on the History of the Discovery of Neptune, 



Smithsonian Contributions to Knowledge, 1850. 

 Robert Grant, History of Physical Astronomy. 

 Simon Newcomb, Popular Astronomy. 

 Benjamin Peirce, Proceedings of the American Academy of Arts 



and Sciences, vol. i, pp. 57-68, 144, 285, 338-41, etc. 



