318 
Wave- 
length 
(Rowland) 
REPORT—1896. 
CoPpPER (SPARK SPECTRUM)—continued. 
Reduction 
Intensity to Vacuum 
and 
Character 
| 
Oscillation 
Frequency 
in Vacuo 
Previous Measurements 
(Rowland) 
At 
2031°3 
2025-7 
201773 
2016-0 
20142 
2013719 
1999'68 
1989-24 
1979°26 
1970°5 
1943°88 
2030°9 T. & S. 
2025°7 
492141 
49350°1 
49555°5 
49587°5 
49631°8 
» | 49656-7 
» | 15:8 | 499992 | 
16-0 | 502545 | 
161 | 505078 
16-2 | 507323 
1165 | 51427-0 
| ! 
| 2016°0 
| 2015°8*'",, 
mire 
2013-2 
| 1999-9 
2s | 1989-4 
Qs | 1979-4 
| 1970-4 
| 1944-1 
§ Observed 
4590:2, 4552°5, 
4384-6, 4355:5, 
3940°6, 39286, 
3810:°3, 37596, 
86559, 36523, 
3492°1, 3487°8, 
3342°6, 3327:2, 
3282-7, 3277-4, 
3201°8, 3192-2, 
3160°2, 3158°9, 
3132-4, 3128°9, 
3065-9, 3055-9, 
2989°2, 2983:9, 
2621-0, 2602°8, 
also by Exner and Haschek, who give also the following lines: 
4525°5, 4520-3, 4513-5, 4494-6, 4485-7, 4458-2, 4437°5, 4420°8, 4896-2, 
4348-2, 4829-0, 4253-8,4182-9, 4144-2, 4057-1, 4003:1, 3973:3, 3964-6, 
3925°3, 3921-3, 3907°6, 3866-1, 3851-1, 3848-1, 3842°8, 3825°3, 3820°9, 
3711-9, 3695-4, 3684-8, 3681-5, 3677-0, 3676:8, 3671-8, 3665-8, 3664-2, 
3648-4, 3629°8, 3589-1, 3546-4, 3545-0, 3529°3, 3514-6, 3500-3, 3498-3, 
3465'8, 3459-7, 3440°8, 3422-3, 3420-4, 3395-4, 3384:9, 3375-6, 3344°7, 
3324-2, 33229, 3821-9, 3318-8, 3315-6, 3301-2, 3293-9, 3288-4, 32845, 
3276-4, 3268-4, 3262°7, 3238-9, 3234-1, 3228-2, 3220-9, 3211-7, 3207-4, 
3189-4, 3187-8, 3186-2, 3184-7, 3181-7, 3176-0, 3171-4, 3168-4, 3165°5, 
3157'5, 31569, 3154-7, 3151-6, 3149-7, 3147-9, 3144-9, 3138-4, 3135-2, 
3120-6, 3118-3, 3113-6, 3105-1, 3103-7, 3100-1, 3094-1, 3082-7, 3081°8, 
3053-9, 3047-1, 3038°5, 3025-0, 3023-5, 3022-7, 3021-7, 30150, 3012°0, 
2978-4, 2874-4, 2858-2, 2762-9, 2735-6, 2731-9, 2725-7, 2647-7, 2646-4, 
2388-3, 2387-3, 2365-7, 2279-8, 2273:3, 2269-1, 2250°3, 22460, 2176:5. 
Notr.—The spark employed by Eder and Valenta was of extraordinary power 
from a large Ruhmkorff coil, actuated by a current of 8 amperes at 110 volts in com- 
bination with a 
large condenser. 
The number of lines observed is thus greatly in excess of the number of those 
observed by Thalén and other observers. 
Sitver (Spark SPEcTRUM). 
Eder and Valenta: ‘ Denkschr. kaiserl. Akad. Wissensch. zu. Wien.,’ 1896. 
Exner and Haschek: ‘Sitzber. kaiserl. Akad. Wissensch. Wien.,’ civ. (1895), cv. (1896). 
* Observed by Kayser and Runge in the Arc spectrum. 
Reduction to 
Wave- Intensity : Vacuum | Oscillation 
length Pail Previous Measurements Frequency 
(Rowland) Character (Rowland) 1 in Vacuo 
| A+ mG 
6037°3 2n 6037-4 Thalén 1:64 45 | 16559°2 
56787 | In 1°55 48 | 176049 
*5667-9 In , , | 176384 
5656°99 1b 134 | . | 17672+4 
5646°50 In 56463, ie , | 17705-3 
5628'40 2n 5627'2,, - 3 17762°2 
