28p ASTRONOMICAL and 



Equal altitudes of the Sun. 

 A. M. ph 41' 37". P. M. 2" 42' 19" 



J. CafflopeK paffed the meridian at . 6^ 11' 37" 



Pole ftar at . . . . 6 19 8 



1800. 



Jan. ift. Therniometer 2 S" at fun rife, rofe to 54°. 

 — Wind N. E, fcattering clouds from the S. £. 



Emirfion of the ill fatcllite of If obfcrred at 1;'^ 5' 43". 

 — Belts diftinft, magnifying power 120. 



An immcrfion of the 4th fatellite is entered in the Nau- 

 tical Almanac to happen at Greenwich at 17" 18' 30'', and 

 the emerfioa at iS'' 44' 22". As the immerfion was to 

 happen but i' 32'' from the emerfion of the ifl; fatellite, it 

 was a favourable opportunity to make both obfervations at 

 ont; fetting. At 12" I placed myfelf at the telcfcope, and 

 as foon as I had adjufced the inllrument to my eye, I 

 thought the 4th fatellite jiad loll fome of its luftre. After 

 rioting the emerfion of the ill fatellite, I again applied my- 

 felf to the inllrument, but the 4th fatellite ftill continued 

 vifible, and had altered but very liule lince 1 firfl obferved 

 it; it was very diftindl at 12'' 42', and at 13'' had nearly 

 it not quite recovered its luftie. 



2d. Thermometer 54° all day. — Heavy rain, 

 •^vlnd N. E. till evening, lliilted to the N. W. 

 in the night when it became clear. 



3d. Thermometer 39° at fun rife, rofe to ^'^''. 



Equal altitudes of the Sun. 

 A. M. 9*" 27' 30". P. M. 3" i' 18". 



Emerfion of the ift fatellite of If obferved at G^ 35' 39". 

 • — Belts diftinct, and the planet and fatellites rcmarkalsly 

 well delined, magnifying power 120. 



Emerfion of the 2d fatcllite of If obferved at 9'' ^^' 59". 

 -—Belts and fatellites very diflinft, magnifying power 120, 



4th. Thermometer 36" at fun jrife, rofe to 54°. 



Equal 



