PottoK—Lines of the Spark-Spectra of the Elements. 199 
BLUE RA YS—continued. 
Wave- | EHlement and Wave-_ | Element and Wave- Element and 
Length. Intensity. Length. Intensity. Length. Intensity. 
4513°7 Br 5 4510°5 Une 4501-4 bret 
4512°9 ial 4510-4 Bro) 4501-1 ice. 
4511-9 Al 6 4507-7 NGG 4501-1 xe 0 
4511-4 In 50 x 4506°1 Baa6 4500°9 Er 6 
4510°7 The 4502°5 Kr 9 4500-0 Blue ends. 
INDIGO RAYS. 
4498-9 Pt 4 4454-1 Kr 10 4411-2 Nd 7 
4497-1 Zr 10 4453-2 Mn 4410-2 Ru 8 
4497-0 Cr 6 4452-2 Veil4 4409-0 Pr 10 
4496-7 Pr 10 4451°8 Mn 6 || 4408-9 Nd 5 
4495-5 Ag 8 4451-7 Nd 10 4408-7 Vee 
4494-6 Zr 10 4450-1 Pr 5 4408-4 10 
4491-0 Ur 3 4449-5 Ce 4 4407-9 V 12 
4489-6 Rowe 4449-3 Ti 10 4406-9 V 12 
4489-1 Var 16 4447-2 N 12 4406-0 Pr 10 
[No. 10, |Gold.] 4447-1 One 4404-9 Fe 10 
4488 4 Au 18 4446-5 Nd 8 4402-7 Ba 8 
4486-0 ao 4444-4 V 10 4401-0 Nd 5 
4484°3 WwW 6 4444-0 Ti 165 4400°8 Vals 
4481°3 Mg 10 x || 4443-3 Zr 10 4400-1 Kr 6 
4479-4 |- Al 6 4449-7 Pe 4 4399-9 Ti 0 
4478-2 Br 8 4441-9 Vai 4399-6 im € 
4476°3 Ag 5 4441-9 Br 8 4398-2 Yt 15 
4474-9 Vv 10 4438-2 Sr 3 4396-5 Br 5 
4474-8 Mo 6 4438-0 A a 4396°3 Pr 5 
4474-3 Vado 4437-4 Au 4 4395-7 Au 38 
4473-8 Pa 6 4436°5 Mn 4 4395-4 V 20 
44728 Br 8 4436-5 R 20 4395-2 Pr 5 
4472-6 Ur 6 4436-3 V 10 4395°2 Ti 15 
4471°6 He 6 4435-7 Eu 30 4395-0 Os 8 
4471-4 Ce 6 4435°1 Ca 10 4391°8 Ca 8 
4469-9 Vv 12 4434°1 Ur 3 4391°3 atin 8 
4468-9 Pr 7 4439-1 Ba 8 4390°9 Nd 6 
4468-7 Ti 15 4430-1 La 8 4390°6 Ru 8 
4466'S As 8 4429-4 Pr 12 4390-1 V 30 
4465-2 Ur 3 4497-7 Lai 4388°8 He 10 
4465-0 Sito 4426-1 N 5 4388:1 He 3 
4463°8 Kr 10 4425-6 Ca 10 4387°9 Th 5 
4463-2 Nd 9 4425-3 Br 5 4387°3 Pb 9 
4463-2 Ur 3 4422-8 Yt 10 4385°9 Nd 7 
4462°6 Vite 4420-6 Os 10 4385°1 Cr 6 
4462°2 Mn 6 4419°8 Er 8 4384-9 Vv. 40 
4460-4 Ce, 8 4419-0 Ce 6 4383°7 Fe 10 
4460-2 Ru 8 4417-1 Onno 4383-6 ibe, 
4460-0 Vou 4415°9 Cd 10 4382°3 Ces 
4460°5 Vo 12 4415°3 Fe 8 4382°1 Th 8 
4457-6 Ti 10 4415-1 Op aS 4380-0 Zr 12 
4456-6 Nd 5 4413°3 Cd 2 4379-4 V 40 
4455-0 Ca 10 4411-9 Mo 6 4378-3 ey 8) 
SCIENT. PROC. R.D.S , VOL. XI., NO, XVI. 20 
