382 Celestial Phenomena from April 1. to July 1. 1830. 



On the 22d of ]\Iay, there wlil be an Occultation of Aldebaran by the Moon : 



Immersion, 

 Emersion, . 



18 42 16, at 184° 



19 13 8, at 258°. 



The angle denotes the point of the Moon's limb where the j)henomenon will 

 take place, reckoning from the vertex of the limb towards the right hand round 

 the circumference, as seen with a telescope which inverts. 



The following Occultations were observed at the Observatory, ]Marischall 

 College : 

 1829, Mean Time. 



Aug. 21. y Tauri, Emers. 22 43 33,4 



22. i Tauri, Emers. 2 29 41,0 



75 Tauri, Emers. 2 37 49,0 



160 Mayer, Emers. 3 45 51,3 



Aldebaran, Immers. 5 36 14,6 



The Telescope used was a 34 feet achromatic by Dollond. The observa- 

 tions have been corrected for the error and rate of the clock, wliich were ob- 

 tained bv transits of the sun and stars. 



Mean Time. 



D. H. / ,/ 



Dec. 9. Aldebaran, Immer. 17 46 29,1 

 Emers. 18 37 44,8 

 Immersion instantaneous. 



At Emersion, the star was 0',2 in 

 recovering its full splendour. 



