300 



usual negative results of the observations before made in Phi- 

 ladelphia. 



On the evening of the 11th, clouds came up from the E. N. E. 

 soon after 9 o'clock, and finally covered the whole sky, which re- 

 mained overcast during the night. On the nights of the 12th-13th, 

 and 13th-14th, the sky was remarkably clear, except towards the 

 horizon, on the morning of the 13th, and during a small part of the 

 morning of the 14th. 



From 11 to 12 on the night of the 12th, there were three ob- 

 servers ; and the space embraced by their observations was that part 

 of the visible heavens from the east round to the north, through the 

 south. The moon was up, having passed the full about two days. 

 During this hour six meteors were counted. From 12 until 4 A. M. 

 of the 13th, there were two observers taking in a range of rather 

 more than half the visible heavens. Eighteen meteors were counted, 

 namely, nine between 12 and 1, three between 1 and 2, and six be- 

 tween 2 and 4 A. M. The paths of nine of these meteors were as- 

 certained to converge to the region occupied by the head of the Lion, 

 eight were variously directed, seven were doubtful or not ascertained. 

 Of all the meteors seen, one appeared as large as Sirius seen by the 

 naked eye, three as stars of the first magnitude, one of the second, 

 three of the third, five of the fourth, and three of the fifth; the mag- 

 nitudes of eight were not noted. 



Two observers were on the watch on the evening of the 13th and 

 morning of the 14th, from 11 o'clock until 4, except for half an hour 

 at 2 A. M., the portion of the sky. embraced in the observations being 

 from the east to the west, through the south. The total number of 

 meteors counted was seventeen. The paths of eight of these passed, 

 when produced, towards the Lion's head, seven were in other direc- 

 tions, two not noted, or doubtful. Three were of the second magni- 

 tude, six of the third, five of the fourth, and one of the fifth ; two 

 were not noted. 



The apparent velocities noticed of meteors having a common ra- 

 diant, or nearly so, were as follows : — 



Path of 8° described in .8" from y Pegasi, vertically downwards. 



3° to 4° in .7" from « Andromedse, downwards. 



17^° in .4" obliquely from a point midway between the Pleiades 

 and Aldebaran, on a line which, if produced, would pass through 

 Castor. 



