ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 257 
On Wave-length Tables of the Spectra of the Elements and Compounds. 
—Report of the Committee, consisting of Sir H. i. Roscor (Chair- 
man), Dr. MaRsHALL Watts (Secretary), Sir J. N. LOCKYER, Pro- 
fessor J. Dewar, Professor G. D. Liverne, Professor A. SCHUSTER, 
Professor W. N. Hartvey, Professor WoLcoTr Gixns, and Captain 
ABNEY. 
CHLORINE (VACUUM-TUBE). 
Eder and Valenta: ‘ Denkschr. kais. Akad. Wissensch. Wien,’ Bd. lxviii. 1899. 
S. = Salet; P. = Pliicker; T. = Thalén; H. = Hasselberg. 
Pres- } 
Pressure Pressure sure 70 | Reduction | 
10 to 20 mm, 30 to 40 mm. | to 100 ito Vacuum 
mm. 2 ill tion 
| | Previous Measure- |—-——_— iedtnce 
aiave. a Wat. tate | Bee ments (Rowland) a WOO 
length | j,q | length rae ann Veo (eae 
een) Cha: | (PO }cha. | \Cha- “ee 
(a) racter| land) (b) | acter | racter | 
5672-2 a4 155| 4:8) 17625 
3571 lb 1-54] ,, 741 
25°5 Zz | 153)! a 
23°1 z H | ” ” 79 
5580-1 ween 5597-5 P., alsoT. | 1°52) 4-9 916 
70-4 a ABC: [Ree Al bee 48 
a | n | 380 12h | ” ” 
5457-70 | 2 57-70 | Abr | | | ( 88-la 
57-28 | 3s | 57:30 | 3by |'b (54578H.,alsoS.P.T. 1°49] ,, 89'5a 
|} 56391! 2s | 5649 | obj} | | 92-4a 
4512 | Is | 45-1 In | { 18029°0a 
44-412| 3s | 4452 | 4by |'b | 45-0H.alsoS.P.T.| 5, | 5:0|) 362:5a 
45:587 Be 43-64 | 6b | | | 65-28 
703| 2s | 23-7 4br 432:6a 
93-441| 6s | 23-4 | 10b" b | 26H, alsoSP.T 148), || “33.5q 
5392300} 4s | 92:3 6b \5393°7 H., also S.P.T.| 1°47) 5-1 539°9a 
5285°8 5 (3285'°9 H., also P. T.|_,, i 913 
5221-48 | 4s 21:54 6b b | 208H.,alsoS.P.T., 144) 5:2| 191465a 
1807 | 33 | 1816 | 8by | b | 170H.,also P.T.| 1°43] ,, 59:0a 
5193-6 an | 15195°6 P., also T. | 1°42) 5:3} 249 
89:74 | Ib | | $9:8 H.,alsoP.T.} 5, | 5 63°5 
76:0 3 Wet Pi also Titel) sch, 315 
pie: § 734 In | 73:2 alone Ls ml ae me 24 
-- | GU6H., also P:T.) 3. |} = 
62°50 1 | s6a°0 Pe ” ” 65:2 
| 589 in teat ye 79 
Ae: 13°3 In 13°6 H., also P.T.| 140] 5:4) 551 
510518 | 2s | 0318 | 4b | OF0 Hieitap Pet bie, 90°2a 
5099°36 | 1bt 5098:8 H., also S.P.T.| 1:39} ,, | 604-9 
896 | gn | a | 43 
e 83:59 | 1 i. 65:7 
| 5078361) 4s | 78:38 | 4br 78:3 H.,alsoS.P.T.| 1:38} ,, 86-0a 
4995°7 In 149987 H.,alsoS.P.T| 1°37} 55} 20012 
70°3 In | 73:3 H ,alsoS.P.T! 1:36} 114 
ABT ih 2 | 462 H.,also P.T! 1-35! 5-6| 225 
| — | SUOwMbawesOnie dees). | sy cae 
1899. F 
