108 PROFESSOR PIAZZI SMYTH ON 
ALCOHOL TU BE, “Ep ton: 
C,H,O. Carbon, Hydrogen, and Oxygen. 
Observed 12th July 1879. From this date a more rigid system adopted of dividing the Spectrum into 
5 parts, with special references, settings, and focussings for each. The references kept strictly apart from the 
observations. 
. Unel 
Colour. Subject of Observation. Intensity. ap a W.N. Place. — Impurities. Couette features tt 
: ¥ : for Alcohol. 
a ies None beyoudll 
ordinary Carbo- 
Hydrogen, ang 
# 
Parts 1 and 2 of asinine Magi 
Scarlet- Faint line, . : 1 | 38 351 Carbon 
Red. Red hydrogen, 8 | 38 707 x Hydrogen 
ache ed Broad haze band, . . . 2 = 4 ae 2 
= Narrow haze band, . : 2 = 40 141 Carbon ? 
Hazy band, . “ . ° 3 = es ae Carbon 
=e 40 669 
Do. 3 = 40 892 Hydrogen 
Hydrogen 
ee 40 954 
Do. 3 =| } 41 335 | ewossge 
Carbo- ae 
Orange. 25, 41 384 Hydrogen arbo- 
m De; : 4 = 41 626 * and Hydrogen 
Hydrogen 
Strong edge of band, 5 BSG. 41 810 x Carb 
Shaded-off edge of same, Le cs 42 068 ites 
Hazy band, 4 = | - A x Hydrogen 
| Hazy band, 3 = re oe 2 
L Excessively thin line, 05 | 42 725 ? 
Hazy band, 9 2 = re ie Hydrogen 
Yellow line (not sodium), 4 | 43 157 ) x Hydrogen 
Part 3 of Spectrum— oo0 
a | Former yellow line, : | = co aot 
ellow. | ydrogen 
Strong yellow line, . 4 1 43 737 x Hydrogen 
Haze intervenes, . 3 
Marked line, . 2 I 44 146 Hydrogen 
Hazy line, 3 HH 44 364 Hydrogen 
[ Broad faint haze band, 1 = } oF oor Nitrogen? | + Hydrogen 
( Line probably citron 1 of blow- Carbo- Carbo- 
| Plpe; -- , , : : 3 | eerie Hydrogen | Hydrogen 
Tube’s citron band, sharp be- 
De ceca sion tt Teta ae ue 
: oO do extends faintly to 
Citron. Haze further intervenes, ae 
ae Carbo- arbo- 
| Haze band, 2 = 45 990 Hydrogen?! Hydrogen 
Faint I : 15 46 180 Carbo- Carbo- 
ik er ezy Teen? 46 867 Hydrogen?) Hydrogen 
( Sharp beginning of band, 2 ry. 47 067 Carbon 
| Faint hazy region, . 1 a aa Hydrogen ? 
Faint h i piste Hydrogen ? 
aint hazy region, . 48 375 ydrogen ! 
Green band’s sharp beginning, 6 et 48 792 x Cnn ae 
RAG 5 F arbo- arbo- 
Green. Blow-pipe’s green giant therein, 8 | 49 173 ‘ Hydrogen | Hydrogen 
Part 4 of Spectrum— 7 eden 
Green giant in tube, . 7 | 49 179 x ous en 
; ar'bo- arbo- 
Its second line do., 3 49 520 x Hydrogen | Hydrogen 
