8 B. E. Moore 
types of separation. Runge has noted a vibration difference per 
cm. of 1691 in two pairs of lines. 
3891.97; and 6497.07 and 5853.9. The longer wave-length of the 
first pair corresponds to the satellites of the first adjacent series, 
and the remaining line to the same series’ shorter wave-length. 
In the second pair of lines the shorter wave-length is the satellite. 
The longer wave was not measured. The measurements here gave 
a value of +.93 for AA/A?, which is closer to the triplet value 
-++.915 of the first adjacent series’ shorter wave-iength than the 
value +.87 for 3892. Line 6487.7 possesses the same separation 
as the line 6497.1, but is characterized by the perpendicular com- 
ponents being much stronger than the parallel. The separation 
of the triplet lines in group II have the same separation as the 
middle line of the first subordinate series. 
TABLE Bay 
H. G. PUN PAKS IN airs H. K. INKS 1N.S 
4934 X 45252 4900 A 4554 2 5854 Xv 41662 
R. M. TR M. Rk. M. R. M. R. M. Re M. 
—1.44|—1.45)—1.42)—1.44|—1.75|—1.83]—1.75|—1.83|/—1.76|—1.76|—1.63] ..... 
— .jA|— .72|— .76|— .72|/—1.09/—1.11|/—1.08/—1.11/—1.19|—-1.19|—-1.16} ..... 
+ .73/+ .71)/+ .75\-+- .74\— .86\— .85|— .86/— .385|— .92)..... — .88\— .87 
+1.45)-+-1.46)4-1.45/+1.44,4+ .85/+ .87/4 .85/+ .87)4+ .58|\— .58!— .62]..... 
a tet MER en Rei le +1.07)+-1.11/+1.06)41.10/4+ .58/+ .57)/4+ .55)..... 
eee ea aero eee actcre 3404 tel curs +1.75)+1.80)+1.79)+-1.82)/4 .91).....|4+ .90/4 .87 
RSET A “oie. o.a\w [Lie icietaier| deters ali oreas susuh de aee-O0e | ac yee gh see etcmeye: el t= ea |= tT hh rote 
ais, | eee heme PPE | RACSPR PSE ART a eee Pree empty SS +1.76)+-1.74)/+1.70] ..... 
These pairs are 4166.24 and — 
