298 REPORT—1885. 
THALLIUM—continued. 
SS 
Intensity In i 
Are Spectrum and Character Are Spectrum and phates 
Liveing and Dewar Liveing and Dewar 
2921°3 10 2699°7 n 
2917°8 10 2665:0 n 
2895°2 2652°3 
2825°'8 2609-4 r 
2826°9 2608°6 8r 
2714 6 n 25520 r 
2710°4 " 2517°0 n 
27088 8nr 
* 5348°0 Miiller ; 4345-1 Ketteler ; 5352 Bernard ; 5348 Riihlmann; 5348°8 Mascart, 
THORIUM. 
Spark Spectrum Eee Spark Spectrum inte 
Thalén and Character rs bh dissin ee andiCharacter 
5698°6 2sd 4863°6 6sd 
5640°1 2sd 4392°5 10nc 
5537-1 6sd 4381°5 10ne 
54461 6sd 4281:0 10sec 
53746 6sd 42775 8sc 
4919-1 6sd 4272'5 6sc 
Lockyer has observed the following lines in the arc spectrum of Thorium between 
wave-lengths 3900 and 4000 :—3999°6, 3995:3, 3993°7, 3991-0, 3989-8, 3987°3, 3986-4, 
3980°4, 3979°4, 3975°3, 3972°4, 3971-2, 3966-6, 3959-2, 3958°5, 3955-0, 39538, 3945-1, 
3944-4, 3940°3, 3937°8, 3937°2, 3936:2, 3934-7, 3931°9, 3931-1, 3928°5, 3924-4, 3918-3, - 
3900°5. 
THULIUM. 
Spark Spectrum inte Spark Spectrum Intensity 
racter and Cha 
Thalén and Character Se an ayncter 
be 1 4481-0 2 
DBIEY 5 4386°5 3 
5305°7 5 42415 2 
boe8e 4 4204-0 2 
ald 1 4187°5 2 
4615-0 2 4106°5 1 
4522-0 3 4093-0 1 
