2 75 
the Nature of the Sun. 
openings that are visible, is most extended towards the north- 
following side.* It affects a circular form, more than the open- 
ing, but is not concentric with it. It has a small lip on the north, 
which I suppose denotes the direction of the gas coming out of 
the opening. A similar lip is visible in the opening itself, as if 
the gas, in coming out, pressed against the luminous clouds 
which limit the opening, and belong to the flat. 
2 h 10'. The lip or projection of the shallow about the open- 
ing is filled up at the sides ; they being now as broad as the lip's 
projection. The filling up is marked with points in the figure. 
Jan. 30, 1801. The large opening observed yesterday is no 
longer increased ; but seems to be nearly at its maximum. 
Feb. 4, 1801, i h io' The shallow of the large opening is 
much more round than the opening, though not concentric with 
it. Hence, its figure being no longer disturbed, I guess that the 
opening is near its maximum. 
There is some Difference in the Colour of Openings. 
March 1, 1 800. There are two large openings, which seem to 
be partially covered, or rather to have a thin, semi-transparent, 
luminous veil of clouds still hovering over them; this gives 
them a fainter black colour than openings generally have. 
Openings divide when they are decaying. 
Dec. 26, 1799. An opening observed the 23th is reduced ; and 
is divided in the middle by a lucid line.-f 
Dec. 27, 1799. The luminous bridge or passage across the 
opening is pretty broad, and has a branch about the middle. 
This branch of light has the appearance of a luminous cloud, 
* See Plate XVIII. Fig. 8. + See Fig. 9. 
N n 2 
