26 



22nd of August at 6h. 3m. a.m. the third satellite will enter 

 on Jupiter's face ; at 6h. 58m. the second will be eclipsed ; 7h. 

 17m. the fourth will enter on Jupiter's face ; 7h. 53m. the 

 first will enter Jupiter's face. Times of reappearance respec- 

 tively 9h. 38m., lOh. 2m., lOh. 12m., llh. 43m. Jupiter will 

 therefore be without satellites for one hour and three quar- 

 ters. 



Professor Airy made this announcement ^t one of the Eoyal 

 Astronomical Society's meetings on account of it being favor- 

 able for observation at Greenwich Mean Time, but when re- 

 duced to Hobart Time Mean Time the phenomenon is found 

 to take place by daylight ; we have, however, a similar occur- 

 rence with the exception of the fourth satellite on the 25th 

 of August, which, if the sky be clear, will be advantageously 

 situated for observation in Tasmania. 



The order of disappearance and reappearance of the satel- 

 lites for H. T. M. T. will be as follows :— 



h. m. s. 



Tlurd satellite will eclipse and disai)pear at 7 29 12.4 p.m. 



Second ditto will occult and disappear at 8 16 



First ditto will transit and immerse 8 44 



First ditto will immerse from ti-ansit at 11 3 



Third ditto wiU occult and reappear at 11 6 



Second ditto will occult and reappear at 11 8 



With an inverting telescope the fourth satellite will appear 

 to the west of Jupiter, and moving eastward. 



Jupiter will rise on the 25th at 5h. 23m. p.m., and set on 

 the 26th at 6h. 47m. a.m., at which time he will be in oppo- 

 sition to the Sun. 



Olservatory, 8th July, 1867. 



