Ill I: ( Ml IS TllloRY OF THK SPOTS 163 



length, or nearly twice as far a- tanco of tin- 



: n tli.- rarth : Then npoU were eeen of such a 

 i that when they readied the son's edge they 

 made a notch on the rim. It waa evident they were 

 not volcanoes spouting forth solid matter to immense 

 heights and blackening with solar smoke the photo- 

 ", as Schroeter called the envelope of light which 

 slothed the sun. They were not dark bodies like 

 tig round this fiery ball. Nor were they 

 of black scum floating on an ocean of I 

 iii 177!) l!< i-schel saw a great spot whirl, 

 ired to ! <li\i<il into two parts. One 

 wan more tl no thousand miles in length, 



\vas about twenty thousand, and a ridge of 

 'parated the one from the <t ; I 

 < observed another, "a fine large *] 

 followed it t< the edge of the sun. He came to 

 conclusion that he was looking into a vast pit, 

 very broad, shelving sides," on to " the real solid 

 ly of the nun itself." Eight years aft. , in 1791, he 

 to the same conclusion regarding another large 

 it was a pit below the level <>f the bright 

 i the dark part it hod a broad margin 

 surface, and also lower down, 

 ipai > spots were the facula, as H \. lius 



_'ts of elevation above the rough surface " 

 sun. "About all the spots the shining matter 

 seemed to have been disturbed; and was un< 

 lumpy, .ui'l zigzagged in an irregular main 

 These waves or ridges of 1 Tightness are of immense 

 extent, but ll.-i--di.-l objected to call them torches, as 

 y appeared like the shrivelled us on a 



dried apple, extended in length, and most of them 



