IN RELATION TO QUANTITATIVE CHEMICAL ANALYSIS. 
331 
The Cadmium Spectrum. 
Scale numbers. 
Wave-lengths. 
1 per cent. 
0-1 per cent. 
0 - 01 per cent. 
O’001 per cent-. 
Hundredths of an inch. 
79-37 
/ 3612-0 
3612-0 
3612-0 
79-68 
1 3609-6 
3609-6 
3609-6 
94-30 
/ 3466-7 
3466-7 
3466-7 
94-50 
]_ 3465-2 
3465-2 
3465-2 
101-45 
3402-8 
3402-8 
119-0 
3260-2 
205-87 
2747-7 
2747-7 
248-24 
2572-3 
2572-3 
326-8 
f 2321-6 
329-85 
J 2313-5 
2313-5 
2313-5 
339-25 
] 2288-8 
2288-8 
2288-8 
348-15 
L2265-8 
2265-8 
2265-8 
2265-8 
377-48 
2196-4 
400-2 
2146-8 
The Aluminium Spectrum. 
Scale numbers. 
* Wave-lengths. 
1 per cent. 
0 - l per cent. 
0’01 per cent. 
0 001 per cent. 
Hundredths of an inch. 
/ 49-85 
/ 3960-9 
3960-9 
3960-9 
3960-9 P 
1 51-16 
{ 3943-4 
3943-4 - 
3943-4 
3943-4 P 
The air lines 
contiguous to the 
above are very strong, hence it is 
a little doubtful 
whether they are present in the spectrum of a solution so dilute as 0"001 per cent. 
/ 70-02 
f 3713-4 
1 71-05 
1 3701-5 
f 79-17 
/ 3612-4 
3612-4 
3612-4 
\80-5 
1 3601-1 
3601-1 
3601-1 
82-07 
3584-4 
f 142-86 
/ 3091-8 
3091-8 
3091-8 
3091-8 
1144-5 
{ 3081-2 
3081-2 
3081-2 
3081-2 
148-5 
3056-6 
191-76 
2815-3 
2815-3 
2815-3 
2815-3 
226-3 
2659-3 
2659-3 
228-26 
2651-2 
2651-2 
249-66 
2566-9 
2566-9 
308-55 
2373-3 
309-0 
2372-0 
309-6 
2370-2 
309-94 
2367-2 
310-62 
2364-5 
The line with wave-length 3584‘4 is both much longer and stronger than either 
2 u 2 
