62 



ASTRONOMICAL OBSERVATIONS 



JUPITER'S FIRST SATELLITE. 

 IMMERSIONS. 



EMERSIONS. 



1774, 29th Dec. 



1777, 30th Jan. 



1778, i5ihMarch 



7th April 

 14th. 



1779, 3d May 



11.25.47 

 12.36.1 1,8 

 8.40.49,6 

 9.00.02,2 

 10.56.35,1 

 12.07.38,8 



5-3*-5 2 

 6.42.30 

 2.47.41 

 3.07.00 



5-03-3° 

 6.14.37 



5-53-45 



5-53-4 1 ' 8 



5.53.08,6 



5-53-° 2 > 2 

 5-53-05' 1 

 5-53-o i J 8 



Dellond's triple objeS 



glais. 



Ditto. 

 Ditto. 

 Ditto. 



SECOND SATELLITE. 



IMMERSIONS. 



1776, 4th Dec. 



1 ith. 



1 8th. 



29th. 

 1780, nth July 



Emerged from behi«d 

 the body 9 27.04.5, 

 and was quite cl^ar 

 ot the body at 

 9 18 SJ.J. 



DilUnd » triple objeft 

 glafs 



EMERSIONS. 



1775. 29th Dec. 



*777> 2 3 d J an -. 

 29th April 



6th May 



1779, 8th May 



8.47.41,7 



7-3 2 -44>3 

 7.20.34,1 

 9.59.28,9 



li -45-53 5 5 



2.53.1 o 

 i-37-4i 

 i« 2 5-43 

 4.04.1 1 



5-54- 2 3>7 

 5-55-°3 ; 3 

 5-54-5 1 ' 1 

 5*S5>*7>9 



5-53-4°>5 



Here the tables feera 

 to have been cor- 

 rected. 



WWi triple objeft 

 glafs. 



THIRD 



