Colour. 
Yellow. 
Citron, 
Citron, 
Green. 
Green. 
Glaucous, 
Part 4. 
GASEOUS SPECTRA IN VACUUM TUBES. 
Strongest line yet; and not altered 
by condenser, ‘ - : 
Another strong line, with de- 
creasing haze beyond it, to 
further than the place of the 
Blow-pipe’s Green Giant, and 
without symptom thereof, , 
July 31, 1879. 
End of semi-resolvable haze, . 
Thin line, 
Strong line, 
thin ones, . 
End of above band, 
beginning band of 
AMMONIA. END-on 
Subject of Observation. Intensity. 
Part 8—continued. 
Line on heavy black era 11 
Haze intervenes, 
Line in haze, 11 
Line, U5) 
Broad line or bundle of thin ones, . 3 
Thinnest possible line, 0'2 
Line, . ‘ é ; é i 15 
Line, j 11555 
Very thin line, . 0°3 
Line, . . 1:3 
Haze band, 07 
Broad haze band, with line in ay 
centre, : A F 0°5 
Faint haze si Joes 0°2 
Semi-resolvable haze, . ‘ 0°5 
Bundle of thin hazy lines, 0°5 
Haze band, 1:0 
Faint haze band, 0°5 
Stronger haze band, 1:0 
Hazy line, A 5 5 : 1°0 
Strong hazy line, . : 5 ‘ U5 
Bundle of thin ce : : : 0°38 
Line, 1:0 
Hazy line, 0°8 
Hazy line, 0°5 
Bundle of lines, 1°7 
Single thin line, . : : ; 10 
Bundle of thin lines, . ; r ios 
Region of faint semi-resolvable haze, 0°5 
Bundle of close thin lines, . 5 2 
Faint hazy line, . é ° 1:0 
Line in fainter haze, . a 1:0 
Do. do. 0°8 
Faint haze band, 0°4 
TUBE. 
Appear- 
ance 
Il 
| 
It 
43 
43 
44 
44 
44 
44 
44 
44 
44 
44 
44 
45 
45 
45 
45 
45 
45 
46 
46 
46 
46 
46 
46 
46 
46 
46 
47 
47 
47 
47 
47 
47 
47 
47 
48 
48 
48 
48 
48 
48 
48 
48 
48 
48 
48 
49 
49 
50 
50 
50 
N H,—continued. 
| W.N. Place. 
874 
991 
114 
241 
358 
451 
548 
686 
798 
882 
984 
288 
268 
384 
468 
572 
908 
016 
098 
250 
298 
412 
458 
602 
730 
864 
020 
158 
298 
442 
590 
730 
870 
980 
096 
160 
216 
280 
820 
428 
576 
628 
680 
788 
884 
020 
910 
012 
170 
424 
Impurities. 
Oxygen ? 
Carbon ?+ 
111 
Constituents 
dissociated. 
Nitrogen ? 
Nitrogen ? 
Hydrogen 
Hydrogen ae 
++ Nitrogen ? 
Hydrogen 
Hydrogen + 
+ Nitrogen ? 
Hydrogen + 
+ Nitrogen ? 
Nitrogen ! 
Nitrogen ? 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen ? 
Nitrogen ? 
Nitrogen 
Nitrogen ? 
Nitrogen ? 
Nitrogen ? 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen 
Nitrogen ? 
Nitrogen ? 
Nitrogen 
Nitrogen 
Unclaimed for 
Ammonia. 
FD HOO 1D HOD VD 
Ammonia ? 
Ammonia ? 
