124 
PROFESSOR PIAZZI SMYTH ON 
HYDROCHLORIC ACI D—continued. 
| Colour, | 
Citron. 
Green. 
Glaucous. 
Violet. 
Lavender. 
Subject of Observation. 
Part 83—continued. 
Terminal line of that space, . 
Narrow band of lines, 
Dual lines in a region of linelets, 
Single line in a region of fainter 
lines, : : ‘ 
Single line jn do. do.—perhaps 
Citron 1, of Blow-pipe flame, 
Grand Citron band, sharp beginning 
of, ‘ 
Line on tail of above, f 
Line stil] on tail of Citron band, 
Line, after a region of linelets, 
Line, . ‘ 
Line in hazy region, : . 
Lines in region of half-resolved 
linelets, . ; ° 4 c 
Peculiar nebulous band, amongst 
linelets, . 
Strong line, 
after 
linelets, : 
half-resolved 
Grand green Carbon band, . 
Blow-pipe’s green eu on tail of 
band, : ; 
Line, ‘ : 
Line, possibly green giant 2, . 
Line, 
Sharp beginning of faint band, 
Do. 
Do. ne 
Do. do, 
Possibly a dual line in faint haze, : 
Brilliant Glaucous Hyena 
Blue band begins : 5 
Part 4. 
Exceeding sharp, thin ee 
Sharp line, 
Sharp distinct line, 
Faint band, , 
Band begins sharply, 
ends less aed Ye 
Line, 
Band, . 
Sharp line, pr robably Violet Hydro- 
gen, . 
Part 5. 
Line, supposed Violet ee? F 
Line, fainter, ‘ 
Band, 
Line, 
Do. 
Dor 5 : 
Faint line or band, 
Faint band, - ; 
Last certain light, | 5 ; 
| Intensity. 
~_—_—_—_—— 
15 
i) SoS OCOCOFNKFHENFH 
SD He OAAASH 
RO HHOSOOH 
SD KAROMNI AWS 
SOrFROCOrFRF Oo FD 
SCO St OVor 
Appear- 
ance. 
os 
rr 
Seaeee 
: Pay 
a 
is, | 
I 
1 
: 
W.N. Place. 
44 133 || 
44 277 
44 395 
44 549 
44 696 
44 920 
45 113 
45 250 
45 508 
Impurities. 
Carbon 
Carbon 
Carbo- 
Hydrogen 
Carbo- 
Hydrogen 
Carbon 
Carbon 
Carbon 
58 526 
Marsh-gas 
Marsh-gas? 
Marsh-gas? 
Marsh-gas ! 
Left unclaimed 
for Hydro- 
chloric Acid. 
Constituents 
dissociated. 
Hydrogen 
Hydrogen + 
Hydrogen 
Chlorine 
Chlorine 
Hydrogen ? 
Chlorine 
Chlorine 
Chlorine ~ 
Chlorine 
Chlorine ? 
Chlorine ? 
Chlorine 
Hydrogen ? 
Chlorine ? 
Chlorine ? 
Hydrogen 
Chlorine 
Chlorine 
Chlorine 
Chlorine 
Hydrogen 
Hydrogen 
Chlorine 
Chlorine 
January 26.—After much trying of various prisms on this tube, I was struck to-day with its light being now generally — 
pink in place of blue,—with the standard Hydrogen lines being very strong,—and with large groups of lines in the Red, — 
Orange, and Yellow, being like those in a Hydrogen tube; also like those produced in old Cyanogen tubes, by too abundant 
ractice and use; while the Chlorine lines are becomin 
Jarbon may very probably be burned and deposited out ; 
(Rear ilorac i faint! and the Carbon bands are nearly gone! 
u 
‘The 
t is the Chlorine changing into Hydrogen? 
