Table II.— Table of the Solar lines identified by Kirchhoff with rays in the spectra of gases ; distinguishing the intensity of each, its position in the spectrum, and the substance to which it is attributed. 



~ Greenish -yellow 



[To/ace p. 32. 



Standard rays 



Wave-lengths in eighth-metres . 



Indigo. f 

 43 44 45 46 47 48 



49 80 



Scarlet. 



6S 64 



Crimson. 



19 70 71 72 7:: 74 76 76 



Zinc 05 



B.inimi l'!7 



IS'o. of rays of intensity 

 Ditto ditto 5 

 Ditto ditto 4 

 Ditto ditto 3 

 Ditto ditto 2 

 Ditto ditto 1 



Wave-lengths 



;ighth-i 



The Mangan ese spectrum is not given in Kir chhoflf's map. 



55555555551 



556445655564 



Table III.— Table of the numbers of the other Solar rays recorded by Kirchhoff, distributed according to their intensities and situations*. 



43 44 45 46 47 48 49 50 51 52 53 » 



* The numbers of Table in. hnd been counted before the integer wave-lengths were laid down upon Kirchhoff's maps with the care that was afterwards taken. Accordingly l) 



55 50 57 58 59 60 61 62 63 04 6o « 



a oases a fow of the my- entered hi one column may more properly belong lo the column next before 



