198 Scientific Proceedings, Royal Dublin Society. 
BLUE RA YS—continued. 
Wave- Element and Wave- Element and Wave- Element and 
Length. Intensity. Length. Intensity. Length. Intensity. 
4699°4 O 8 4620°4 Wr 3 4562-5 Ce 5 
4697°1 xX 7 4619-9 Vie@ 4561°4 Bi 7 
4693°5 Br 8 4617-4 Mo 10 4560°9 We a 
4692°7 La 8 4616°3 Cr 7 4559-0 Au 6 
4688:0 Zr 10 4616°1 Tm 2 4558°9 Cr 10 
4686°1 Ge 10 4614°9 Br’ 6 4558°7 la 6 
4683-8 Au 2 4614:1 N 8 4555°8 Th 8 
4683°4 ID A 4609°5 K 6 4565d°4 Cs 10 
4682°4 R_ 50 4609°7 O 2 4555d°3 Ur 4 
4682°4 Ika, 8 4607°8 Au 6 4554°7 Ru 10 
4680°8 WaeeG) 4607°5 Sr 10 4554°2 Ba 10 
4680°4 Zn 10 4607°3 N 8 4554°2 Wis eS 
4678:9 Breas 4607-0 ite, 6 4553°5 Mo 6 
4678-4 Cd 10 4606°0 Se 10 4552°6 IPR 
4676-4 O 3 4605°4 fe 8 4552°0 Ss 10 
4675°8 we 4604:0 Cs 7 4550°6 Os 8 
4675:0 Cu 6 4603°9 Ur 4 4549°8 Ti 15 
4673-2 Au 6 4602°4 Li 10 4549°8 V 12 
4672-7 Br 6 4601°6 Br 3d 4549-7 Ih 7 
4672-0 la 6 4601°5 N 9 4549-6 Au 6 
4671-4 Kr 10 4600°9 Cr 6 4546:1 Cre 
4671-4 xX 10 4600°3 V 10 4545°6 We let 
4669°4 Na 3 4596°3 O 6 4543°8 Whe 7 
4669°1 lhe, © 4594°3 We 19 4543°1 Br 8 
4668°7 Ag 2 4694°2 Eu 10 4542°8 Nd 565 
4665°2 IN@, 3 4593°3 Cs 6 4540°9 Cr 565 
4.663°1 Al 10 4592°4 Sb 6 4540°7 Cr 5 
4662-7 Cd 3 4591°6 Crib 4539°9 Ce 8 
4662°1 1m 4591-1 O 5 45388°9 Brew 
4660-0 We GB 4588-4 Cr 10 4538°4 Ur 4 
4656°1 lim 1) 8 4587°9 A 7 4536'1 dui 
4655-7 La 8 4587-2 Cu 8 4535°9 Cr 6 
4652-2 Bp | 4586°6 Ver e2 4534°4 Pri6 
4651°3 Cu 8 4586°1 Ca 4 4533°3 1 NO 
4649°2 O 8 4586°4 Sn 8 4531°5 Sr 1 
4646-2 Au 3 4584-6 Ru 8 4530°9 Cr 7 
4643-4 INS 4581°7 Ca 4 4530°3 INL 8 
4642°0 K 1 4680°6 V 10 4530°0 Br 5 
4641-9 O 9 4579°8 Ba 6 4528°6 Ce 8 
4638°9 O 5 4578'8 Ca 4 4527°5 Ce 10 
4637°8 In 8 4577°4 V 10 4526°6 (Ore 7 
4635-0 I 6 4675°9 Br 6 4526°3 taro 
4634-0 N 3 4575°1 lia 6 4525'8 Br 8 
4633°8 + 1K 4 4574:1 Ba 4 4525°d ibe 7/ 
4630°8 Niel, 4573°9 Ur 8 4525°2 Ba 10 
4630-1 | Aa, 4572°9 Renee 4525:°0 Ss 10 
4628°3 Ce 10 4572°5 Ce 10 4§24:9 Sn 10 
4627°4 Ku 8 4572:0 V 10 4524°8 ».« 6 
4627°3 Ope &) AMisy7| PAO} Ti 20 4523°2 Ce 8 
4624°4 Kr 10 4670°1 Ope 8 4523:°0 Ubi, LC) 
4624-4 xX 15 4567°9 Ur 3 4522°8 Eu 15 
4623:°0 Br 8 4564°8 Vial? 4522-7 Tm 2 
4622°3 Di 4 4663°9 40h, 1G) 4522°5 La 8 
4621°7 N 9 4563°5 4M & 4516°5 Ur 4 
