Uf 



:i«s 



iti'PoiiT -1884. 



DlDYMII'.M roHtiiuiit/. 



Spark Spcctnim 

 'riialon Kir-lilicill' 



*i:j'.',')0 

 4:t():(u 



4-_'.S.">(» 

 J4282I) 



4277-.-. 

 42720 

 42(ilO 



Till! following? lines butwceu tho wavis-lcnjifths ;i!M)0 and 1000 Imvp Ik-ou obscrvH 

 by J.Dckvcr in tlui arc-si)octnitn of Diilymium, :(:t!i|'0. IlitH.".-,. :i!»78H, ;f!>7.')-8, ;i',)721, 

 liitfii-n. :Vj():ii), :i!K;:i:t, :i',»(>2!», :tiM;2'i, 'Mcx^, :{'.h!ii, :i'.):.7(t. .!!»:.(»•<.», -MrtO], :!',)i(ir,, 

 •A'JM'J, :ju2G1, ;ii)2()-), a!)i8i, :ii>i7t», :i!)i()i, :i!m»7\s, :!it().-);i, •.\w)i\\. 



KUHIl .u. 



spnrk 



Spnrk I ' Sp;irk ' Spark ' ^p«rK 



SiiCL'trum I I'ltcnaity Spcctnim '"'''"^'fy Spcctriim InftuMty Spectnim Intcnsiiv 

 ' iinil Mini and mill 



Thaldn 



and 

 ('liariicter 



Tlialrii 



(!07f)») 

 r)()41-() 



fiour. 



fi8SI0 

 587 1'O 

 r>8fl40 



r.8r):)() 

 r)82(;o 

 r)7(i2() 



57380 



57:i20 



r)(i2(!() 



5l8.-)0 

 54:)C>-0 



r.2.*.(;() 



52l7-() 

 ■ilSSO 

 5ir>4'0 



5i;{;}0 



5070(1 



< liaracter 



2 

 I 

 4 

 2 



i; 

 s 

 <; 

 <; 



4 



2 



i 2 



,,,, ,, .Character! „., ,. CliiiriK'ter 

 IhaliMi „ llialcri 



5041-5 

 4!t510 

 4H!»i)0 

 4S71-.-> 

 4S'J()0 

 4Sl!M> 

 47!li5 

 47»;20 

 47580 

 47500 

 4(!78-0 



I. FIntnc Spectrum 

 l.ivciii;; 



(;2:tO 



IIODO 

 tiOIt) 



5570 



5:t2it 



Fmokink. 



1 1. Spnrk Sp(>ctruni 



Salct 

 ( (;!)20 



■ t;8(io 



L(!7H0 

 (!400 



(;2:!o 



Intensity nnd Character 



II. 



Intensity and Cliarnc'pr 



