Mr. Schroeter's Observations 
35 6 
to the eastward, the third about seven, and the fourth near 
eight of the same diameters, distant from the said limb. 
Fig. 2. shews Jupiter, with its belts, and of a somewhat 
spheroidical form, as it now appeared to me, and as distinctly 
as I had ever seen it. The equatorial belt, from a to d , was 
very apparent. It consisted properly of two zones, a b, and 
c d, of a brownish-grey colour, with a more luminous interval 
b c, between them. At e and /were two comparatively well 
defined stripes, which I had noticed for many years back, but 
which now crossed the whole disk ; and the polar regions ap- 
peared again, fromg and h, more dim and grey than the bright 
part of the planet. But what particularly struck me, were two 
nebulous undefined spots, i and k, which were sensibly darker 
than the principal zone d d ; and at /, a still more remarkable, 
circular, though imperfectly defined spot, somewhat brighter 
than the luminous interval between the zones, and perfectly 
similar to the remarkable luminous spot which I had ob- 
served in 1786 and 1787, on the same part of Jupiter, and which 
then led me to some very unexpected inferences concerning 
the atmosphere of that planet.* 
These favourable circumstances led me to the following ac- 
curate observation, which I was certain would prove instruc- 
tive to me. At io h 40' 50", I saw the spot i at about the 
middle of its parallel; and immediately after began the oc- 
cultation, than which a more distinct and beautiful one was, 
perhaps, never seen. 
Beytr. zn den veuesten Astron. Entd. p. 75. and Tab. I. fig. 6. 
