100 Astronomical and Nautical Collections. 



YeATly chang* fieouiar 



R'.A. 1835. 1S25. alteration. 



U M s S 



Leonis 11 40 7-577 3-0667 - 0-0077 



Virginis 11 41 34-743 3-1244 —0-0006 



a Virginis 13 15 59-118 3-1459 + 0-0112 



« Bootis ....... 14 7 40-911 2-7323 + 0-0012 



1 « Libra ..... 14 41 1-368 3-3000 + 0-0156 



2 a Libra? .... 14 41 12-738 3-3020 + 0-0155 



a Coronse 15 27 16*823 2-5364 + 0024 



« Serpentis .... 15 35 39-245 2-9491 4- 0-0063 



a Scorpii 16 18 41-517 3-6616 +0-0157 



a Herculis 17 6 40-286 2-7306 + 0-0037 



* Ophiuchi .... 17 26 48-818 2-7771 + 0-0035 



a Lyrae 18 31 0-831 2-0300 + 0-0016 



7 Aquilae 19 37 56-371 2-8549 - 0-0008 



a Aquilae 19 42 14-637 2-9286 - 0-0014 



Aquilae 19 46 43-025 2-9501 - 0-0015 



1 « Capricorni . . 20 7 56-495 3*3331 —0-0081 



2 a Capricorni . . 20 8 20*327 3'3375 — 0-0081 



u Cygni 20 35 28-088 2-0413 + 0-0024 



a Aquarii 2J 56 47*581 3-0838 - 0*0043 



a Piscis Austr. . . 22 47 57*812 3-3402 - 0-0217 



a Pegasi 22 56 2-973 2-9812 + 0-0053 



a Andromedse . . 23 59 21-515 30777 + 0*0177 



Notwithstanding this extreme accuracy in taking the mean of 

 observations to a single ten-thousandth of a second in time, it is 

 rumoured that between Professor Bessel and another experienced 

 astronomer, there is a " constant difference in observing the right 

 ascension," amounting to " nearly a whole second of time," as 

 •was " ascertained for some months during his stay" at that astro- 

 nomer's house : and the preceding remarks of Mr. Henderson 

 sufficiently confirm the credibility of such a rumour. 



v. Abstract of Captain Sabine's Experiments to determine the figure 

 of the Earth. Printed at the expense of the Board of Longitude , 

 4/o, London, 1 825. 



* " In the year 1816, an address to the Crown was moved in the 



