- 
ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 301 
TiIn—continued. 
L IL. daneneity i II. pi 
Spark Spectrum} Arc Spectrum | Gparacter Spark Spectrum | Arc Spectrum Ghatencen 
Hartley Liveing I Hartley Liveing I 
and Adeney and Dewar : and Adeney and Dewar : 
2229°6 8sd 2151:2 2sd 
2221°5 8sd 2119-2 4sd 
2215°2 2sd 2113°6 4sd 
2210°1 2210°7 6sd 2079°3 4sd. 
2199-2 2198°7 2sd 2066°1 4sd 
2195-0 2194°1 2sd 
* Observed also by Lecog de Boisbaudran in the Spark Spectrum of Stannous Chloride solution. 
t Observed also by Lockyer; the ‘indices’ attached to these numbers denote the relative ‘ lengths’ of 
the lines, 
t 2sd in Hartley and Adeney’s photograph, 
I. Spark Spectrum 
Cornu | Thalén 
65560 
6543:1 
6260°4 
6257-6 
6221°1 
6214:3 
6125-4 
6097°6 
6090°6 
6083°4 
6064-7 
5998°9 
5978°2 
5998-0 
5976°9 
5965°5 
5964-4 
5951°5 
5940°3 
5920°7 
5918-2 
5898-1 
5952-0 
5921-7 
5919-0 
5899-1 
5865-4 
57381 
57141 
5701°6 
5688-6 
5679°1 
5674-4 
5661-6 
5647°1 
5643°1 
56291 
|| 4523°3, Mascart. 
§ 3259°9, Cornu. 
TITANIUM. 
II. Are Spectrum yee nae de 
Angstrém ae ie Il. 
| 4sd 
2sd 
6260°4 (6260°4) 8sc r 
*(6257°6) 10ne by 
6sd 
6218°5 
6214°3 6sd 
61270 
8sd 
6097°6 6sd 
6090°6 8sc 
6083°4 6sd 
6064:7 8sc 
5998°9 8sd 
5978°2 10se 
5965'5 10sec 
59520 10sec 
6§sd 
6sd. 
5899-1 10sec 
5865-4 10sec 
6sd 
5714:1 4sd 
2nd | 
5688°6 8sd 
5679°1 6sd | 
5674°4 10sec 
5661°6 10sec 
4sd 
5643°1 10sec 
