328 PROFESSOR PIAZZI SMYTH ON 
aot TATE lcnemicsorisin | Couetteed | aan 
Colour of the - uae . Intensity avht a Micrometer f 2 Pee ean WAVE. | 
Continuons’ | Ob est Observt gee a Diack xed ef biaian| SMMC | eedlage | gang | fuente || AU |e 
Spectrum at thickness tive R Grating Nor-| Thalen, &e. PLACE, per || 3's 
the Place. obiine: symbol. Ae mal Solar British Inch. 56 
Spectrum. i 
System of lines, very sharp— 
1st component, 1 1) 12°890 59 680 6 
2nd do. 2 | 12°905 59 686 3 
3rd do. : 3 12°914 duos 59 689 4 
j romium 
4th do. -| 4 | Wilf} 12-924 Calcium,’ { | 59 693] 
5th do. 5 II 12-941 and Iron. || 59 698 
9 
6th and chief, sf 12968 59 707 
7th component, 2 | 2 (12°987 U| 59 714 7 
Group of lines— 
1st and small component, il fi) ( 13°040 59 733 95 
2nd and powerful, 6 | | |fij4 13110 | 59 758 Tron. 59 758 
3rd do. do. 6 i 13.134 | 59'765| Irn. || 59 765), 
4th component, small, 2 | J 13°154 59 771 6 
Fine unequal double line— 
1st component, . Oona 13°198 59 786 
2nd = do. : 2° | 13°216 Tron. 59 793 
VIOLET. | Grand double line— 
Ist component, .| 4 |{ [| 13252 59 805 
Qnd do. 4 || 13-282 59 814 
Fine line, 1 | 13°309 59 821 
Strong line, A ok” ee | 13°348 Iron. 59 837 
Strong group of lines : 1st component, 3 | 13°430 59 863 12 
nd do. 3 Teil 13°465 59 875 || 3 
3rd do. 3 13°473 59 878 
i 13°558 59 905 
3 | 13°585 59 918 
: “4 1 13°602 59 921 
Group of alternating lines, BS 3 u | 13°623 iran 59 928 
Bho , 13°638 59 932 
WET) | 13°656 Tron. 59 940 
A grand triple group, where place 
appears to be faulty in Angstrom’s 
Map— 4 
1st line, ee eee es | 13695 Titanium. || 59 952 F 
2nd and chief line, .| 8 i 13°736 |59959>?| iron. 59 965] io 
3rd and last line, . : 3 | 13°768 59 975 
haze includes all three. 
VIOLET colour ends here ; LAVENDER begins. 
Triple group (single in Angstrom)— 
1st line, 3 13°845 Tron. 
Qnddo. .| 4 | ¢i[]}| 13°854 Tron. 
3rd do. .| 4 | I 13-866 
Fine line, 1 | 13°912 
Strong line, 2 | 13°945 
0. : 2 | 13°965 
Lavender. | Strong double line : Ist component, . 3 | 1 13988 Tron. 60 054 6 |. 
(Single in Angstr.), 2nd do. 3 | 14:000 60 060 
“ Little g,” a very powerful and hazy 
line : haze ce 14:080 Manganese. || 60 089 ; 
Ist side of g, . 14'107 60 100 | 
g ’ 60 100) Calcium. 3 
2nd side of g, 14'128 60 103 
Terminal line to the 11 
haze, 14°162 Calcium. || 60 114 | 
