G. Jones on the Zodiacal Light. 169 
mornings then being very favorable for correct observation, on 
account of the high angle of the ecliptic with the horizon. 
Again, in April, 1855, the apices and greatest body of the light, 
Were north of the ecliptic, even at times when I was, myself, to 
the southward of that line; as was the case in the first hours of 
the evening observations, up to the 18th of that month. The 
following general view rather shows us that there is something 
on this subject which may yet be learned, than that we have 
now the materials for anything definite and certain on the sub- 
ject. 
1853. April—The planes of ecliptic and Zodiacal Light cross 
each other. ; 
July.—By evening observations, the apex of Zodiacal 
Light appears to be north of the ecliptic. Morning ob- 
ns. 
September.—Apices on the south, by morning observa- 
* * % 
[The discussion of theories here follows in the volume and 
after objections to others, he comes to the one adopted. 
my ition on our globe, and even b 
ge tf pod tion in a single night; and 3. That the Bie of 
ected light require an arrangement, or a shape, of this nebu- 
’ oS will give us, at the base of the Zodiacal Light, 
SECOND SERIES, VOL, XXIII, NO. 68.—MARCH, 1867. 
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