ON THE ATOMIC GROUPING- IN ORGANIC BODIES. 
905 
Lines (L) and bands (B). 
Compound. 
Approximate 
wave-length. 
Scale on plates. 
Intensity. 
Diethyl ether 
741 
740 
L 
(Hopkin andWiLLUMs). 
9071 
L 
892' 
[ B 
1 
920 j 
r 
903 j 
958 
985 j 
935' 
959 j 
[ B 
0 to 1 
10401 
1075 J 
1003 
1030 
[ B 
{ 
0 to 1 1 
1 to 0 J 
1 at 1025. 
1086 
1037 
B 
1 
As in ethyl iodide. 
1185 
1072 
B 
1 
1165 
1100 
B 
1 
1075' 
10301 
1130 j 
[ B 
1 
2 
Background. 
— 
11301 
1140 j 
[ B 
1 to 1 
1140 
1 
End of spectrum. 
Amyl ether 
753 
751 
L 
1 
(KahlBx\.um). 
893 
878 
L 
1 
2 
913 1 
922 j 
8981 
905 J 
f B 
1 
2 
922] 
9051 
1 
927 j 
\ 
910 j 
1 
927] 
942 J 
9101 
920 j 
1 
2 
9421 
949 J 
9201 
927 J 
r B 
O 
O 
h|<m 
966' 
9421 
[ B 
f 
0 to 1 
1002 I 
> 
972 j 
l 
1 to 0 
1040 
1003 
L 
1 
Broad. 
1066 
1025 
L 
1 
As in ethyl iodide. 
10401 
1066 J 
1003' 
1025 
\ B 
1 
4 
1066' 
10251 
1175 j 
\ B 
1 
2 
11391 
. 
10751 
f B 
r 
0 to 1 
1150 
1085 j 
l 
1 to 0 
1165 
1100 
B 
1 
As in ethyl iodide. 
— 
11751 
1180 j 
| to 1 
1180 
1 
End of spectrum. 
6 A 
MDCCCLXXXI. 
