7 none ; ; ; Possibly an enhanced line accounts for maximum near ? 8 (?) ; Mg accounts for maximum at 9 (?) Unblended 10 (?) Ti, -5 Probably unblended 11 ; Maximum at due to Fe 12 ? ; V, Blended with Ti. See Note 1 13 ? ; ; Fe predominates. Maximum uncertain 14 ; Rise at due to Fe. In band 15 ; Rowland gives no Ti. Other lines account for later maximum. In band 16 ? ; ; Maximum undetermined. In band 17 Unblended 18 (?) ; ; Cr accounts for strength in V 1 ; V, Ti and Ti+ lines blended. V probably obliterated 2 none Unblended 3 none Ti, ; V probably effective at low temperatures, as these are the ultimate lines 4 none N; Cr 1 Unblended 2 none Nd? ; Unblended 3 none ; ; ; Cr probably predominates 4 none ; Cr ? Cr predominates 5 none Unblended Mn 1 none Unblended 2 none ; Fe predominates? 3 none ; ; Zr, -1 4 none ; Mn ? Mn predominates 5 none Mn-Fe ? 6 none Fe-Mn ? [Pg 129] 7 Fe, ; ; Mn predominates? 8 Fe-Mn 6 9 ; Co, ; ; V, Ca ? Fe 1 Mn-Fe Effectively unblended 2 () , No. 2 the weaker line, Mn+ affects the line at and before , producing maximum at . See No. 27 3 none Fe-Mn, 3 ? Effectively unblended 4 none Sc, Fe? 3; ; V, Y+ accounts for maximum at 5 - Sr+ Due entirely to Sr+ 6 ? ; ; -3 Maximum at due to Fe+ 7 Unblended 8 Unblended 9 () ; ; Ti+ () causes maximum at ; possibly Cr () causes rise at 10 () ; ; Ti predominates? 11 ; ; Ti, Fe probably predominates 12 none ; Ca produces rise in late classes? 13 Unblended. Rise at unexplained 14 Fe ? Unblended. Rise at unexplained, unless due to second Fe line 15 ; Rise at unexplained. See No. 25 16 ; 17 ; -3 Maximum at due to unknown line? 18 ; 19 ; 20 ; ; Fe predominates 21 ; ? 3; ; -1, 1, 1 22 ; Ti, ; Rise at due to Ca? 23 ; No. 23 the weaker line 24 ; ; No. 24 the strongest line 25 See No. 15. Rise at unexplained 26 ? ; 27 ; The stronger line. Responsible also for the maximum of line 2 28 ; ; ; ; Rise at due to V 29 none ; ; Cr and Mn predominate. Cr (ultimate) line responsible for rise at [Pg 130] 30 ; Maximum at due to Fe+ 31 ; Ca produces rise at 32 ; ; Rise at unexplained 33 Sr+ Due entirely to Sr+ 34 - ; Fe? 3; V-Fe?; 35 ? ; Fe, -3; ; ; -, 1; Fe-Cr 3 Too heavily blended 36 Co ?; ; Maximum at unexplained. Rise at due to Ti (ultimate line) 37 Cr, La, Mn, Ni, ; Ti, Fe2; Al?; Fe2 See Rowland, p. 37. An Fe+ line responsible 11 ; ; 39 none ; Fe, ; Nd? Rise at unexplained 40 () ; Rise at probably due to Ag 41 ; ; -3; -3 Maximum certainly due to Fe+. Neutral Fe causes rise in cool classes 42 ; -3; -1; -1N Maximum due to ionized iron 43 ; Maximum due to Fe+; later rise perhaps due to Mn Zn 1 Unblended 2 Unblended Sr 1 none ; Fe probably predominates, except perhaps at the lowest temperatures 2 ; Sr ?; Fe ? Fe probably strong, but Sr responsible for part of maximum at 3 Fe, ; ; ; La, Nd? ; ; Maximum uncertain owing to heavy blending Y 1