152 
Mr. Schroeter's new Observations 
vations of this kind contained in my memoir on the rotation, 
to which I have referred, § 12 to 23, will find 14, in which the 
southern horn appeared much smaller than the northern, but 
only one or two instances of the opposite phenomenon. And, 
if it were merely deception, why does the smaller horn, when 
the planet is seen through light clouds, always disappear sooner 
than the broader one, and become visible again later? (See 
§ 12. No. 4. of the memoir.) 
It further appears likewise, 
( c ) From the observation, that sometimes , though much set - 
domer, one horn, and particularly the southern, is seen rounded 
about the time of the elongations, but the other pointed. And by 
this very circumstance chiefly is 
4 . The period of rotation, which I had concluded to be 
nearly 23 11 21', confirmed and rendered evident by the new 
observations given above. 
Having already explained this curious circumstance when 
the observations themselves were stated, I will here only make 
the following remarks. 
(a) If the very remarkable observations of the 26th, 27th, 
28th F ebruary, 13th March, 2d and 3d April, when the southern 
horn appeared rounded, but the northern pointed, are com- 
pared together, the abovementioned period will be found to 
suit them all, during an interval of 37 days, as exactly as can 
possibly be expected, and indeed to very inconsiderable frac- 
tions. If, on the other hand, they are compared with the 
older observations of this phaenomenon, namely, those of 28th 
December, 1789, 31st January, 1790,* the 25th, 27th, and 30th 
* See Sekn. Fragm. §522. 
