FLAME SPECTRA AT HIGH TEMPERATURES. 
177 
Lithium. 
Lithium chloride. Exposure 30 minutes. Kayser and .Runge’s measurements 
refer to arc spectra of the alkalies and alkaline earths. ‘Ueber die Spectren der 
Elemente,’ Konigl. Preuss. Akademie, 1890, IV. 
Ivory scale 
numbers. 
1 
Kayser and Runge’s measurements. 
1 
\ 
X. 
2-8 
1490713 
6708-2 
P.s. 
64-1 
2173 
2172794 
4602-37 
D.s. 
90-,S 
2420 
2419878 
4132-44 
D.s. 
174-55 
3094 
3093322 
3232-77 
P.s. 
P.s. Principal series. 
D.s. Diffuse series. 
Sodium. 
Sodium chloride. A perfectly pure specimen specially prepared. Exposure 
35 minutes. A very strong continuous spectrum extends from X6020 to 3600, it 
continues weakly to X3320. Loc. cit., Kyyser and Runge. 
Kayser and Runge’s measurements. 
1 
Ivory scale 
1 
X. 
Remarks. 
numbers. 
x, 
1 
K 
X. 
60 
15340 
6518 
Bands and lines not pre- 
8-0 
15574 
6420 
viously observed. Some 
9-5 
15748 
6349 
. 
rather broad, others narrow. 
r 10-8 
15898 
6290 
1 
Band with lines upon it. 
{ 11-2 
15946 
6271 
L 12-3 
16042 
6233 
/ 
Stronger edge of band. 
14-2 
16290 
6138 
Stronger edge of band at 
15-81. 
16-8 
16595 
6026 
• • 
• • 
Centre of band with stronger 
edge at 17-25. 
20-0 
16975 
/1696091\ 
11697738/ 
/5896-16\ 
V5890-19; 
D 
25-3 
17575 
/1758007\ 
Vl759665y 
/5688-26\ 
V5682-9 } 
D.s. 
47-8 
2007 
/2006610\ 
V2008314j 
/4983-5\ 
V4979-3 ) 
D.s. 
61-1 
2142 
/2141603\ 
V2143531; 
/4669-4\ 
14665-2/ 
D.s. 
165-6 
30280 
/3027487\ 
1,3028037/ 
/3.303-07\ 
1,3302-47 ) 
P.s. 
P.s. Principal series. 
D.s. Diffuse series. 
2 A 
MDCCCXCIV.—A. 
