CH. xxxi. ASTRONOMICAL WORKS. 301 



Chief Works consulted. Airy's 'Report on Astronomy,' British 

 Association, 1833; J. D. Forbes's 'Progress of Mathematical and 

 Physical Science' Sixth Dissertation; 'Encyclopaedia Britannica,' 

 new edition ; Guillemin, ' The Heavens ; ' Herschel's 'Astronomy ;' 

 Grant's ' Physical Astronomy ; ' ' Reports of the Astronomical So- 

 ciety;' 'The Orbs of Heaven,' Mitchell; Proctor, 'On Shooting- 

 Stars and Meteors.' 



