5] EPHEMERIS OF NEPTUNE AND MERIDIAN OBSERVATIONS. 61 



Meridian Observations of Neptune made at the Cambridge Observatory by 

 Professor Challis, and compared with the Ephemeris. 



Greenwich M. T. Observed E. A. _^ ^ ^ Observed N. P. D. ^ca^'j/'^T) 



1847 h. m. s. h. m. s. , 



July 22 14 7 9-4 22 8 19'90 -0'23 102 6 43'3 - T4 



26 13 51 4-7 7 58-81 0'20 8 46'5 +0'2 



27 13 47 3-3 7 53-27 0'30 



29 1339 0-5 742-28 0'25 10 22'6 +1'8 



30 13 34 59-1 7 3672 0'20 10 50'6 -2'2 

 Aug. 3 131852-4 7 13'63 0'37 13 2'1 -1'5 



7 13 245-3 650-11 0'22 15 16'6 -I'l 

 9 125441-1 637-71 0'57 16 27'0 +1-2 



10 125039-3 631-80 0'41 16 58'0 -2'0 



11 124637-5 625-88 0'22 17 347 +0'2 



13 12 38 33-4 6 13'51 0'29 18 39'6 -4'0 



14 12 34 31-2 6 7-28 0'35 



20 12 10 18-5 5 29-87 0'38 22 48'0 +0'4 



21 12 616-2 523-50 0'48 23 23'8 +0'3 



23 11581T8 510-84 0-62 24 33'9 +1'6 



24 11 54 9-8 5 4-70 0'49 25 9'2 +2'0 

 27 1142 3-4 445-97 0'46 26 51'6 +0'2 



31 112554-9 42T07 0'52 29 7'2 -1'6 

 Sept. i 112152-9 414-97 0'45 29 42'9 +0'1 



2 111750-8 4 8-77 0'50 30 20'3 +3'6 



4119 46-9 3 56-59 0'46 31 26'6 +27 



8 10 53 39-3 3 32'58 0'44 33 36'3 +0'4 



9 104937-4 326-57 0'54 34 9'4 +1'1 



16 10 21 25-9 2 46-29 070 



17 1017247 241-04 0'43 38 18'4 +1-1 



The observations of Aug. 9, 13 and Sept. 6 were somewhat uncertain 



on account of clouds. The N. P. D. has been corrected for parallax. 



