| G. Hinrichs on Spectral Lines. | 353 
$9. Oxygen spectrum, 
Line, w é Ww’ E 
a 6150 6150 0 
8 5328 nee : 5327 ~—1 
r 5185 ae 5 5190 +45 
4367 4367 0 
where d==1374. Range, from orange to near indigo. 
$10. Mercury spectrum, 
Line. Ww t wi E 
a 5782 5784 —2 
a’ 5759 <a: t 5759 0 
g 5461 Fae F 5459 +42 
9 5359 0 
* 43 
where d=25. Range, from yellow to near indigo. 
Tn the synopsis of Pliicker’s determinations given in this Jour- 
nal (vol. xxxix), we find also the lines of several compounds, 
and we will improve this opportunity to test the application of 
the law of multiple distances to the four binary compounds in- 
vestigated by Pliicker. 
§11. Tercklorid of phosphorus spectrum. 
Line, Ww D i 
f e921 
F- a 6493 
1, 469 tt Sa 
7 oe ae eee 
where d=36. 
$12. Bichlorid of silicon spectrum. 
ine, Ww D t we 
bd 6329 6329 0 
358 3 
te ee ee 
where d=116}. 
$13. Bichlorid of tin spectrum. 
Ling - W D é : 
a 6445 64444441 
651 65 
ee eee 
5 5333 at “i Se 
4524 net es 4524 0 
where d—=10. 
$14. Carbonic acid spectrum. 
i WwW D i ! E 
f 5599 409 41 5600 —1 
Ses 90 ae 
119 12 2 
7 4382 +2 
where d==10, 
