302 PROFESSOR PIAZZI SMYTH ON 
ale ‘DATA, Conctuded! || =a 
lour of the Intensit: ance ©Y | Micrometer ical-origin-| CONC 7 
ye Object Observed, generally a black, fixed of black, 4 graphical Reading. iN se ’ pees nee = a 
Spectrum at Fraunhofer Line. thickness ear 7 a Nee Angstrom, PLACE per 35 
the Place. of line. symbol Rey. ST aleolae Thalen, &c. | Btish Inch. 3 zZ 
Spectrum. Bo 
Fine line. This not in Angstrom, 
and his two adjacent Iron lines not 
here, : 15 | 14-225 2 42 300 
Very fine line, . ily \ 14°343 42 344 
Amber. Suspected fine line, . 0°5 ' 14°378 Telluric water] 42 355 
vapour. 
Suspected line or lines, 0°5 © |, 14°457 42 382 
A fine line certain, 1955 | 14°590 Tron. 42 430 
Do. do. 13 | 14°644 ; Tron. 42 448 
Do. do. 1:3 : | 14°668 Tron. 42 454 
Do. do. 1°3 14°816 42 510 
Do. do. 13 | | | 14-343 | ( 42 512 Tron. Ue 519 
Very finest of lines, . iis ' 15:008 42 571 Tron. 42 570 
Do. do. 5 il: 1 15045 Titanium, 42 583 
Fine line, 1:5 | 15°235 2 42 653 
Do. - - 15 | 15°263 42 662 Titanium. 42 662 
Suspected line, | 5 - c 0°5 ' 15°304 Telluric 42 670 
watery vap. 
Fine line, possibly double, 07 \ 15°353 42 682 
Fine line, 0°5 ' 15°384 42 690 
Fine clear double, 1st line, 14 «|! (| 15°440 42 702 
"and do. 20 || If] 15-455 t 42 699 Tron. 42 705 || ® 
Very faintest of lines, : ° 0°5 ' 15°485 Telluric 42 715 
Do. doles : : 0°5 ' 15°510 watery vap.| 42 722 
Suspected thin band, 0°5 = 15°546 42 732 
Fine line, : it | 15°600 , Telluric 42 750 
watery vapour 
and chief 
“* Rain-band” 
lines, 
Finest of lines, . - : : 07 \ 15°618 42 753 
Do. ony. ; ; 1:0 ' 15°630 42 758 
Suspected fine line, ; : 0°5 ‘ 15°650 42 763 
Certain fine line, . ; 4 : 13 | 15°78 Tron. 42 802 
Very fine line, . ils \ 15°840 |. Telluric 42 822 
watery vap. 
Fine line, : : : : ‘ 14 | 15°878 Tron. 42 831 
Fine line; space between this and 
last line shaded, . : - 4 ily | 15924 Tron. 42 849 
Very fine line, probably | Sate : 0-4 ' 16°015 42 877 
Very fine line, . ; 5 geet | 16-048 Telluric water} 42 888 
rie : vapour. 
mber. Very fine triple line, 1st palest, : 0°5 16°108 F | 42 906 
y and line, Pl beoee ay l id 16-126 Telluric water! 45 gig i 
3rd darkest, .| 12 [I J 16°143 Vapour» | -apigie 
| Finest possible line, . ; E ie \ 16°190 Telluric water} 42 934 
| vapour. 
Do. do. 1 ; 16214 |} 42 942 
Strong line, : : : 4 3° 0 16248 42 953 Iron. 42 952 
Finest of lines, . : ; ie | 16274 42 960 
Excessively fine line, “double ? 07 Il 16°343 Telluric water) 42 981 
vapour, 
Excessively fine line, 0°5 \ 16°365 42 988 
AMBER colour ends here, and YELLOW begins. 
The large number of excessively thin, and generally unimportant lines encountered hereabouts is probably due 
faint traces of the rain-band lines, just visible, although the Sun is 70° high. 
| 
Vallow Excessively thin band suspected, . 0°6 a5 16400 43 000 
. : Certain fine line, . F - ; 1°3 | 16°458 Tron. 43 016 
Thinnest. and finest line, . ; ‘ ile ' 16°500 43 030 
Fine line, 3 ; : ; ; alt | 16°560 Telluric 43 048 
watery vap. 
