Mr. J. S. Ames on some Gaseous Spectra. 57 



\. N. 



49750 



2010-05 +-04 



4974-0 H. 



4917-1 ^ 



2033 72 



4916-72 



48139 



2077-32 



4813-01 



4722-6 )■ 



2117-48 



4721-61 



4666-35^ 

 4648-4 | ) 



2143-00+0-5 



4665-22 



2151-28 



4647-30 



4573-7 1 

 4489 6 f 



2186-41 



4572-78 



2227-37 



4488-60 



4415-7 

 4356-3 J 



2264-65 



441468 



2295-53 



4355-80 



4344-4 ^ 



2301-81 



? 



4269-15 | 



2342-39 



4268-83 



4200-85 y 



2380-47 + -06 



4200-26 



4141-2 | 



2414-76 



4140-24 



4094-0 J 



2442-60 



4093-69 



4059-0 ] 



2463-66 



4058-27 



3998-0 | 



2501-25 



3997-22 



3942-55 y 



2536-43 



3941-5 E 



3894-25 | 



2567-89 +-07 



3893-5 



3856-9 ; 



2592-76 



3856-2 



3804-85] 



2628-22 



3804-2 



3755-15 



266301 



3754-45 



3710-15 y 



2695-31 



3709-3 



3671-35 | 



2723-79 



3670-5 



3642-0 ; 



2745-74 +-08 



3640-9 



3576-85 ] 



2795-76 



3576-0 



3536-5 



2827-65 



3536-4 (?) 



350015 y 



2857-02 



3499-1 



346905 | 



2882-61 



3468-1 



3446-2+J 



2901-75 



3445-3 



3371-2] 



2966-30 +'09 



3370-8 



3338-6 | 



2995-27 



3338-1 



3309-4 y 



3021-70 



3308-7 



3284-8 

 3267-5J 



3044-325 



3284-2 



3060-44 



3267-1 



3158-9] 



3165-66+-10 



3158-3 



3135-7 1 



3189-08 



3134-9 



3116-4 f 



3208-83 



3115-75 



3103-8J 



3221-86 



3103-2 



2976-7 | 



335942 +-11 



29761 



2961-9 I 



3376-21 



2960-8 



2953-0+ J 



3386-38 



2952-4 



2819-7 I 



3546-48 +-13 



2818-7 



2814-15/ 



3553-47 



2813-1 



The study of these hands is most interesting. We have 

 here the hest means of testing the accuracy of Deslandres's 

 so-called laws. Measurements show that the series of lines in 

 each hand obey his law fairly well, and in this sense are iden- 

 tical. The physical properties of the series are not always, 

 however, the same. We can also arrange the bands themselves 

 in five series as Deslandres* did, and in each of these series 

 the same law of distribution holds with considerable accuracy. 



* Comptes Rendus, civ. (1887), 



