274 Scientific Proceedings, Royal Dublin Society. 
'UNGSTEN. 
Spectrum 1 shows the lines yielded by a strong solution of 
sodium tungstate; spectra 2, 3, 4, 5 give, as before, the effect of 
dilution. The lines of this element are not very persistent, few 
remaining with the ‘01 per cent. solution. 
QUANTITATIVE SpEcTRUM oF SopiumM T'UNGSTATE. 
Measure. || ate || Goaror || Measures ||. eres all geri 
ment. 2 sistency. ment. eS sistency. 
—- 9 -—— 460°71 3017°6 26 
285-99 4680°8 6 461-41 3014°3 lo 
287-06 4660-0 6 468°31 2980-0 26 
289-68 4610-1 20 468-90 2977°3 26 
— 10-11— 475-18 2947-1 3X 
309°21 4302°3 6 475°66 2944-5 3x 
309°72 4294°8 8 x 477-72 2935°1 3 o 
311-51 4269°5 6 480-23 2923°2 lo 
326-25 4074°5 6x 1.9 = 
4070-0 6x 486°10 2896-15 26 
—_12-———— 489-97 2879°5 20 
331-66 4008°9 8 x 493-03 2866-4 26 
——-13——_ 497-16 2848-2 1 
352°76 3780°9 40 501-16 2831°5 2 
353°85 3768-6 4o ——20-—_ 
300'93 3750°9 26 515°25 2774°6 3 
370°24 3617-7 6» 517-77 2764-4 4x 
—— 1416) —— —21 
425-09 3215°7 as 0% 526°98 2729°69 4 o 
——1/7-——_ 528°26 2724°2 4X, 
454:18 6061-4 4x 532°58 2709°7 4o 
454-45 3049-9 3X 534°32 2702-2 4 
——18-——— 535°57 2697°8 4x 
459°27 8024°5 4 536°53 2694°5 26 
