a 250 H. A. Newton on Altitudes of Shooting Stars. 
Art. XXVII.—Altitudes of Shooting Stars observed on the night : 
of Nov. 13-14th, 1863, at Washington, Haverford College, Ger- 
mantown, Philadelphia, and other places. Computed by H. A. 
NEWwTon. 
A BRIEF notice of observations made upon shooting stars on 
: the night of Nov. 18-14th, 1863, was given in this Journal, [2] 
xxxvii, 141-145. <A collation of the data thus accumulated 
: h 
surface in statute miles (one mile =1609 meters) of the meteors 
at their first appearance, and at their disappearance. In the 4 
second column is the hour of the day, and in the fifth column 
are numbers designed to express the measure of confidence 
which I have in the determinations of the altitudes of the mid- 
dle points of the paths. These numbers range from 1 to 10, 
and depend upon the probable accuracy of the observations and 
Hore than half of these altitudes were computed from obser- 
vations made by the assistants in the United States Naval Ob- 
ton by the party from the Coast Survey Office under charge of 
_ Mr. Schott, of those at Germantown by Mr. Marsh, at Phila- 
_ radiation from the sickle in Leo. We have some reason to 
expect a still greater increase this year. 
For several numbers of the tablé the altitudes are not given. 
The observations were not in those cases entirely reliable, and 
| only the altitudes of the middle points of the visible paths were 
compu -hey were as follows: 
No. 10 mid. alt. 143 miles, w't 3 | No. 37 mid. alt, 50 miles, wt 1 
13 « 138 « 11 8 a “ oT ks. ome 
* 40 “ te 
“ “ 9 “ ‘sé 35 CUS ss 
Hes “a id - " : | 61 135 
