99 ASTRONOMICAL OBSERVATIONS 



An Emerfion of Jupiter's ftrjl Satellite. 



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30th of Sept. by watch emerged - - 9. 15. 10 

 Too flow at noon - - 4-21.27 



Lofs till obfervation at 185",! + 1,15, 



Emerfion 9-37-52 



Ephemeris 4.05.02 



Longitude in time 5. 32.50 



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 in degrees 83.12.30 



I fuipeft that a miftake was committed in writing 



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 down the time, and that it ought to have been 9,16,10. 



But this is as it is entered in the original book. 



13th Oclober, at 1.48 fet the watch forward one hour 

 without flopping it. 



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On Meridian, Oa. 15th 23.51.53,5 



Equation of E. A. - 4- 6,8 



23.52.00,3 flow 7.59,7 

 Equation of time 2 3-45-3 1 ?7 && 6.28,6 



The obfervation of the paflage over the meridian 

 was not taken the next day after the emerfion as ufual, 

 and between the 17th and 18th the watch ran down; 

 therefore the rate is afcertained from the mean time, 

 compared with the 29th September and ifl October. 



And 



