OBSERVATIONS OF THE PLANET NEPTUNE, BY PROFESSOR CHALLIS. 



[From the Monthly Notices of the Royal Astronomical Society. Vol. VII. (1847.)] 

 CAMBRIDGE. In the Meridian. 



1846 



With the Northumberland Equatorial. 



Greenwich M. T. R. A. N. P. D. No. of Measures. 



1846 Oct. 



