ON THE ATOMIC GROUPING IN ORGANIC BODIES. 
909 
Compound. 
Valerianic acid 
(Kahlbaum). 
Aceto-acetic ether 
(Hodgkinson). 
Diethyl aceto-acetic 
ether (Hodgkinson). 
Approximate 
wave-length. 
746 
9071 
913/ 
913/ 
917/ 
917/ 
930/ 
949 
971 
1002 
1027 
1040 
1020/ 
1047/ 
1047 
741 
886 
895/ 
907/ 
907/ 
913/ 
913/ 
917/ 
1003 
1003/ 
1133 / 
1020 
1040 
1047/ 
1066/ 
1096/ 
1107/ 
1132 
Lines (L) and bands (B). 
Scale on plates. 
Intensity. 
745 
L 
1 
892] 
898 j 
0 
to 
1 
4 
898] 
/ f 
to 
1 
902 j 
r 
l 1 
to 
3 
4 
902] 
912 j 
!- b 
1 
4 
to 
0 
927 
L 
1 
947 
L 
1 
972 
L 
1 
2 
992 
L 
1 
1003 
L 
3 
4 
987) 
1010 J 
B 
0 
to 
l 
1010 
1 
740 
L 
1 
2 
872 
L 
1 
4 
880/ 
892 / 
892/ 
898/ 
898/ 
902 / 
972 
972 
1070 
987 
1003 
10101 
1025 / 
1045/ 
1055 / 
1070 
B 
0 to i 
0 to 1 
x 
4 
1 
i to J 
f to | 
1 to 1 
1 to I 
Broad line. 
Very fine. 
5? 
55 
Broad line. 
End of spectrum. 
Broad line. 
End of spectrum. 
900 
907 
907 
913 
913 
917 
917 
922 
1003 
1020 
1040 
1047 
1066 
1020 
1066 
1066 
1096 
1107 
1159 
1171 
} 
} 
} 
} 
} 
} 
884 
892 
892 
898 
898 
902 
902 
905 
972 
987 
1003 
1010 
1025 
987 
1025 
1025 
1150 
1045 
1055 
1095 
1105 
1160 
} 
I 
} 
} 
} 
} 
} 
} 
B 
B 
B 
B 
L 
L 
L 
B 
B 
B 
B 
B 
0 to i 
i to 0 
2 t'° 
1 to 
0 to 
1 to / 
1 to \ 
1 
Broad line. 
Background of spec¬ 
trum. 
End of spectrum. 
