604 
MP:SSRS. T. E. THORPE AND J. W. RODGER ON THE RELATIONS 
Compounds differing by one Carbon Atom. 
7/ cP. 
Diff. 
>,d-. 
Diff. 
Tetraclilormetliane . 
Tetrachloretlijlene . 
1077 
898 
-179 
Methyl alcohol .... 
Aldehyde . 
401 
322 
-79 
Isomers. 
Normal and Iso Compounds. 
- 
Normal. 
Difference. 
Iso. 
Pentanes . 
480 
- 9 
489 
Hexanes. 
550 
- 1 
551 
Heptanes. 
593 
5 
588 
Propyl iodides .... 
795 
- 21 
816 
Propyl bromides . 
686 
- 19 
705 
Propyl chlorides . 
557 
- 10 
567 
Butyric acids. 
702 
2 
700 
Propyl alcohols 
869 
- 59 
928 1 
Butyl alcohols .... 
813 
-104 
987 i 
Butyl Alcohols and Ethyl Ether. 
y d\ 
, 
Difference. 
Normal butyl alcohol ..... 
883 
104 
Isobutyl alcohol. 
987 
1 
! 
256 1 
Trimethjd carbinol. 
1243 
1 
! 
Ethyl ether. . . . *. 
459 
i 
Amyl Alcohols. 
y d". 
1 
Difference. 
Inactive amyl alcohol. 
936 
i 
- 16 
Active amyl alcohol. 
920 
104 ; 
Dimethyl ethyl carbinol .... 
1024 
i 
