CERTAIN HARMONIES OF THE SOLAR SYSTEM. 63 



acal Light, he says : " So bright was it toward the base that it produced a weak 

 reflected glow to the west, and we could occasionally fancy a tail of the faintest 

 conceivable light extending nearly to the zenith." (Length of the bright light was 

 63°.) " Nevertheless there was no doubt of the lenticular form of the chief mass 

 of light, and the place of its apex as measured, was always consistent enough."^ 



This was almost three days after the full moon, and seems to present an exam- 

 ple of Case 3d. Under the date of Sept. 8th, Prof. Smyth says of the Zodiacal 

 Light — " bright at base, glowing toward the lower part of the axis."^ 



This was one day after the first quarter of the moon ; and we here would seem 

 to have an example of Case bth. 



(90 bis) The observations of Col. Charles G. Forshey, already alluded to in (72), 

 were made while Col. Forshey was superintendent of tlie Texas Military Institute 

 (Lat. 30° N., Long. 96°25' W. of Greenwich), in 1858, 1859, and 1860. 



Among these observations we find the following, which seem to furnish consist- 

 ent examples under the Cases described in (85) ; and the list might readily be 

 extended. 



Case \st. 



Evening of Oct. 5, 1858 ; 1 day before new moon. 



Evening of Nov. 6, 1858; 1 day after new moon. 



Evening of Nov. 7, 1858 ; 2 days after new moon. 



Evening of March 3, 1859; | day before new moon : — 



Light narrow, except near the horizon, and towering high. 



Case 2d. 



Evening of Oct. 12, and morning of 13, 1858 ; between new moon and the first 

 quarter. A midnight band of light seems to be delineated ; sucli as will also be. 

 noted among the observations under Case 5th. 



Approaching to the conditions of Case 2d: — 



Evening of March 31, 1858; 2| days after full moon. 



Evening of Nov. 10, 1858 ; 3 days before the first quarter of the moon. 



Evening of Nov. 13, 1859; 3| days after full moon. 



[The three last-mentioned instances are specially described in Note 3 to (72).] 



Evening of Nov. 11, 1858: — 



This observation may be specially classified with the preceding three. It was 

 made three days before the first quarter of the moon. The position, therefore, is 

 nearly that of Case 5th. 



Case Sd. 



Evening of April 22, 1859, 2 days before the last quarter of the moon. 



Figure seems to show the peculiar bright spot indicated in the description of 

 our Case dd, of this Article. 



Case 4:th. 



Evening of Oct. 29, 1858 ; day of last quarter of the moon. 



Time Uh. to 127i. P.M. 



' Paa-e 217 Page 298. 



