NOTES BY THE EDITOR. XIX 



X ' (new element) green coronal line 



TT , c Sub-incandescent. F 



Hydrogen ) 



Incandescent, C, F, near G, h 



X (new element), near D 



Magnesium, b, und lines in bluo and violet 



Sodium, D 



Barium, several lines 



Iron, etc., several lines, including E 



He further says : " The foregoing table excludes naturally the 

 substance or substances which give bright lines in the solar spec- 

 trum, which are visible at times in the spectrum of the chromo- 

 sphere. I have ventured to suggest that the substance which 

 gives the line in the green is a new element, because invariably 

 I have found that in solar storms the atmospheric layers are 

 thrown up in the order of vapor density, and because all the 

 heavier vapors are at or below the level of the photosphere 

 itself " 



" Parties in Sicily obtained evidence that the corona was radially 

 polarized. Hence the corona not only radiates, but reflects solar 

 heat to us." 



Lockyer offers as suggestions : 



" 1. The solar chromosphere extends some 5' or 6' from the sun 

 (Watson and others), its last layers consisting of cool hydrogen 

 (Mr. Abbay), and possibly a new element with a green line in its 

 spectrum (Young, Barton, and others) ; which line, if it be identi- 

 cal with the auroral line, as stated by Gould, may possibly be 

 present in the higher regions of our own atmosphere. 



"2. Outside this stratum the ra} T s, etc., are for the most part 

 due partly to our own atmosphere, partly to our eyes, for their 

 shape varies ; they are seen by some at rest, by others in motion, 

 and their spectrum is the same as that of the dark-moon (Maclear). 



"3. The white light of the chromosphere above the prominences, 

 as seen in an eclipse, is clue to its strong reflection of solar light, 

 as shown by the polariscopic observations (Ranyard, Peirce, Jun., 

 Ladd) . 



"4. The rosy tinge of the corona proper, that is, of the region 

 more than 5' or 6' from the sun, is due to our atmosphere contain- 

 ing light which comes from both the higher and lower strata of 

 the chromosphere (Peirce, Sen., Maclear, Abbay)." 



Professor Winlock found a faint, continuous spectrum without 

 dark lines. 



1474, Kirchoff, was found all round the sun to a distance of 20' 



