170 



ASTRONOMICAL and 



Mean Latitude 



37 o 22.9 North. 



LcngituJe deduced from the eclipfcs of If's fatellite-s and 

 one lunar obfervation. 



1 796. Dec. 20th. 



26th. 



37 th. 

 28th. 

 31ft. 



4th. 



5th. 



1797. Jan 



Clock too fall: mean time . 2 10 Daily gain. 

 Stopped on the 23d by the extreme cold. , „ 



Clock too flow mean time . o 38 



do. . . . . o 19.5 



do. . . . . . o 7.5 



Clock too fall mean time . o 38 5 



do. . . . . o 54.J 



do. ..... I 2.0 



18.5 

 12 



I5-S 

 4 



7-5 



The immerfion cf the 3d fatellite of Zj! was obferved on the 2cth of 

 December at 9'' 8' 47' P. M. as before noted: The clock by equal alti- 

 tudes of the fun taken on that day appeared to be too fall 2' ic" mean 

 time, and gained by fubfequent obfervations at a mean rate about 10'' per 

 diem. The clock Avas therefore too faft at the time of the obfervation 2' 

 14", the obfervation was of courfe made at 9*" 6' 37" P. M. mean time, 

 to which add 1' 13" the equation of time, tlie fum 9'^ 7' 90" will be the 

 apparent time of the immerfion, which taken from 15'' a' 34" the appa- 

 rent time at Greenwich by the theory, will leave 5'' 54' 44" for the dif- 

 ference of meridians. 



An emerfion of the firft fatellite of If was obferved on the 2 i ft of De- 

 cember at 6'' 56' 00" P. M. The clock at that time by admitting the 

 mean daily gain to be 10" was too faft 2' 25" mean time, the obfervation 

 was therefore made at 6'' 53' 35" mean time, to which add o' 46" tlie 

 equation of time, and the fum 6'' 54' 21" will be the apparent time of the 

 obfervation, which dedufled from 12'' 49' 29" the apparent time at Green- 

 wich by the theory, will give 5'' 55' 8'' for tlie difference of meridians. 



Another emerfion of the ift fatellite of 1( was obferved on the 28th of 

 December at 8'' 48' 38" P. M. 'J'lie clock at that time was about i" too 

 flow mean time. The obfervation was therefore made at 8'' 48' 39" mean 

 time, fiom which deduift 2' 44" die equation of time, and the remainder 

 8'' 45' 55" will be the apparent time of the obfervation, which dedudled 

 from 14*' 41' 53" the apparent time at Greenwich by the theory, will give 

 5'' 55' 5^'' f^"" '^^'^ difference of meridians. 



On the 5th of January 1797, at 2'' 54' 18" P. M. by the clock, the dif- 

 tance between the neareft limbs of the O and J was obferved to be 84° 

 1 6' 39" the clock at the time of obfervation was i' 2" too faft mean time, 

 the obfervation was therefore made at 2'' 53' 16" mean time, from which 



deduft 



