AT THE OBSERVATORY AT PARAMATTA. 



65 



not agree with the observation, the operation must be repeated with a new hy- 

 pothesis off. 



The opportunity of observing a comet whilst its node is in opposition pre- 

 sents itself often, offering a means of ascertaining the inclination with the 

 more preciseness the greater a — Q is, as the sinus thereof suffers then but 

 little alteration by an error in the longitude of the node, which is all that is 

 assumed as given. 



The two next Comets were discovered and observed by me at Paramatta. 



F. Comet in Orion, Sept. 1826. 



Original Comparisons of the Comet with fixed Stars, made with a Wire Micro- 

 meter. 



MDCCCXXIX. 



