308 Dr. Herschel’s Observations to investigate 
Jan. 27, 1800. The sun is every where coarsely indented, but 
not punctured ; there being no black points in the indentations. 
SIGNS OF ABUNDANCE OF LUMINOUS MATTER IN THE SUN. 
Visible Increase of empyreal Clouds. 
Feb. 12, 1800. The indentations, in many parts, are changed 
to small shallows of corrugations. There seems to have been a 
gradual increase of the luminous clouds for some time past. 
The reason why I am not positively assured of this increase is, 
that my present method of viewing the sun is so much better 
than formerly, that, by seeing things to greater advantage, there 
may be some deception in the seeming change of appearances. 
March 5, 1800. I can now entertain no doubt that the lumi- 
nous clouds are more copious than they were some time ago. 
The corrugations seem all to be better filled. Hardly any of the 
indentations have pores. 
Many Openings , Ridges, and Nodules. 
March 5, 1 800. A range of openings has a very fine appear- 
ance ; there are 55 of them. The most south and largest has a 
considerable shallow about it. Two, just north of it, have shal- 
lows on the northern side, but not towards the south, where the 
borders of the openings seem to be full as elevated as the highest 
luminous clouds. Near the south-following margin are exten- 
sive ridges, studded here and there with nodules. 
Nov. 17, 1800. The sun is beautifully ornamented with 
openings, shallows, ridges, and nodules. 
Dec. 2, 1800. The sun is every where richly covered by lu- 
minous clouds. Ridges and nodules are also to be seen in many 
places. 
