266 SPECIAL RESULTS IN THE URANOLOGI3AL 



Each of these important discoveries has not only had for its 

 direct result the immediate enlargement and enrichment of 

 the solar system as known to mankind, but it has also given 

 occasion to numerous similar discoveries : to the recognition 

 of 5 other interior comets (by Biela,Faye, de Vico, Brorsen, and 

 D' Arrest, between 1826 and 1851 ; and of 13 small planets, 

 three of which (Pallas, Juno, and Vesta), were discovered 

 between 1801 and 1807, and ater an interval of fully thirty- 

 eight years, in rapid succession, following the happy and well- 

 planned discovery of Astrsea by Hencke, December 8, 1845, 

 of nine others by Hencke, Hind, Graham, and de Gasparis, 

 from 1845 to the middle of 1851. Attention to comets 

 has so much increased, that in the last eleven years the 

 paths of 33 newly discovered comets have been calculated, 

 being nearly as many as were computed in the course of the 

 forty preceding years of the present century. 



