the Nature of the Sun . 
281 
Sometimes there are Shallows without Openings in them. 
Feb. 7, 1801. There is a pretty large shallow inclosed by the 
ridges which follow some preceding openings. 
Feb. 12, 1800. A place where yesterday I saw five or more 
nodules, at present contains low ridges inclosing some shallows. 
Incipient Shallows come from the Openings , or branch out from 
Shallows already formed, and go forwards. 
Jan. 18, 1801. In a cluster of openings, there is an incipient 
shallow, coming from one of them. 
Jan. 19, 1801. The incipient shallow is increased, and has 
now spread all round the opening. 
Jan. 24, 1801. A large opening sends from its shallow already 
formed, a narrow projection, towards the end of a neighbouring 
shallow belonging to a smaller opening, as if they were going to 
meet. 
Probable Cause of Shallows. 
Jan. 25, 1801, 9 h 20'. Two branches A B,* of a shallow 
coming from an opening C, are going towards the south. It 
seems as if they were destined to meet the incipient shallow of 
a south-following opening D. 
9 h 50'. The shallow B is now very nearly united to the narrow 
part of the shallow surrounding the opening D. The shallow 
A seems to advance, in a direction towards the farthest south- 
following opening E. 
io h 20'. The shallow B is now completely run into the shal- 
low about D; and the shallow A is grown broader towards F. 
1 i h 30'. The shallow B is so completely joined to the shallow 
* See Plate XIX. Fig. 13. f Fig. 14. 
Oo 
MDCCCI. 
