402 Meteors of November, 1868. 
the train. After this aperture closed up I could distinctly see 
a small star through the vapory mass. This cloud-like object 
ined visible, with slight changes in its outlines, for thirty 
minutes,” 
The latitudes and longitudes of the several places of ob- 
servation of this meteor are as follows. ; 
Latitude. Longitude. 
Williamstown, 42° 45’ 18.40 
Poughkeesie, 41 40 50" 73 53 30” 
New Haven, 41 18 33 72 55.25 
Wilkesbarre, 41 15 75 54 
Palisades, 41 030 73 54 7 
Haverford, # 40 036 75 1816 
Washington, 38 5339 77 248 
The place of Jupiter 
. 0° 27 23". The relative positions of the places are represen- 
ted in a skeleton map, upon plate II. The corresponding po- 
sitions of the paths upon the heavens are presented in an ad- 
Joining diagram, upon which are also exhibited the radiant, 
the pole star, and Jupiter. 
veral methods of computing the actual position of a 
track from the observed paths have been published. The most 
complete is by Bessel n the Astronomische Nachrichten, vol. 
> p- : andes, 
Newcomb, &e. I have, however, found the following the most 
convenient method of treating observations. With a sixteen 
inch globe it is sufficiently accurate for any ordinary data. 
First, I rectify the celestial globe for the mean latitude of 
the places of observation, and for the mean local time of the 
Sppearance of the meteor. Then upon the globe I paste nar- 
row strips of paper to represent the several observed paths. 
In a similar manner are indicated the zeniths of the places, 
instant in the uction of the several lines joining the places 
of ohentaeicetaee i I. ine : 
two observations, be in the horizon of the rectified globe, and 
in all cases wi very near that horizon. ‘When the meteor 
belongs to a group having a well defined radiant, that point, 
or region, is Marked in like manner. 
There are certain geometrical conditions which the observa- 
tions, if correct and complete, must now fulfl, Thus, through 
