34 
RunGe), we get a series with the formula: 
109675.0 
10 AA GOA Agee ee 
(x + 1.651360 — 657.42 21)? 
ii AE 
So the series differs from the others only in its asymptote. We 
find the following lines: 
ie zt Ai 16 | hip? nie Intensity ; 
1 uu 3073.15 ae te 23 : 
2 | 2433.581) | 2433.57 +0.01 0.03. 1 
3 | 2931.80 | 2231.80 0 is Vee a ae 
A | 2141.1 2141.19 —0.09 | 0.20 me 
5 | 2091.7 2092.30 | —0.60 | 0.50 a 
6 | 2063.8 | 2063.79 | 40.01 | 0.50 = 
43073.15 for «=41 does not occur in the are-spectrum of tin. The 
spark-spectrum has the line 23071.9, which is given as diffuse and 
broad. There appears to be good agreement for this series. The 
terms for «= 7.8 etc. are outside the region of observation. 
The translation 5618.84 gives the series with the formula: 
109675.0 
(a + 1,651860 — 657,42 4—')? 
10° A—! = 50926.14 — 
eo 18 
which yields: 
sina UE i (Geet ae 
x | dy dy | Aw peren | Intensity 
1 | 032.90») | 3032.90 | of 008 | 8 
2 | 2408.21 | 2408.27 | 0 0.03 | 1 
3 | 2200.78 | 2210.55 | ia 0.10 Pee 
4 | 2121.5 2121.57 —0.07 0.20 za 
5 | 2073.0 | 2073.50 | —0.50 0.50 = r 
For Àà=2209.78 Liversc and Dewar found 2 == 2210.7, which 
gives a difference of + 0.15. with the value found by me. There is 
1) Exner and Hascuex |. c. 
