19 



region, of May 8 and 9, 1795, agreed with me in the opinion that this star was 

 Neptune, if Lalande had observed that planet at all, and that on searching the 

 region it would prove to be missing. So fully were we convinced that the 

 result would be in accordance with our anticipation, that on the 3d of February 

 an account of what had been done, and what was expected, was transmitted 

 to the following persons, not connected with the Observatory, namely, to Lieut. 

 Gilhss, U. S. N., to Professor A. D. Bache, LL. D., and Professor Jos. 

 Henry, LL. D. 



No. 29. The weather still continued cloudy until the afternoon of February 

 4th, when it became clear. On the evening of this day Professor Hubbard was 

 directed to observe the stars of the following list, which I had prepared, for the 

 purpose of testing the question of the presence or absence of the star believed 

 to be the planet Neptune. 



This list, for convenience sake, was taken from Hussey's XIV Hour in the 

 Berlin Star Charts, the loci of Neptune having been changed to mean places as 

 a fixed star, January 1, 1800. 



The list used by Prof Hubbard, February 4, 1847, was as follows : 



No. 



Magnitude. 



R. A. 1800. 



Dec, 1800. 





' ^ 



ft. 



m 



s. 



/■ ^ N 



1 



9 



14 



8 



1 



— 11 39.2 



2 



9 



14 



8 



3 



11 27.5 



3 



8 



14 



8 



5 



11 8.0 



4 



8 



14 



10 







11 26.5 



5 



9 



14 



10 



27 



10 55.1 



6 



8 



14 



10 



33 



10 28.4 



7 



9 



14 



11 



27 



10 53.3 



8 



8 



14 



12 







11 8.3 



*9 



7.8 



14 



12 



1 



11 21.0 t|l? 



10 



6 



14 



12 



41 



10 47.6 



11 



9 



14 



13 



20 



11 25.8 



12 



7 



14 



13 57 



10 45.2 



13 



9 



14 



15 53 



10 42.9 



14 



8.9 



14 20 



32 



10 58.4 



Eeduction 



to 1847 .... 



• + 



2 



31.2 



— 13.2 



On the morning of the 5th, Prof Hubbard reported to Lieut. Maury that he 

 had verified our expectations, in so far as related to the absence of the star No. 

 9 of the guide catalogue. He had found each of the other 13 stars twice. He 

 had repeatedly brought the star No. 8 to the proper place, in order that No. 9, 

 if now in the Heavens, should be in the field. It was not now in the Heavens. 



No. 30. If it had been strongly expected that the star would be reported to 

 be missing, how much must the belief in its identity with Neptune be increased 

 by this report. I immediately commenced, February 5, to compute the Dis- 

 Art. 1.— 3 



