between the viscosity of liquids and their chemical nature. 603 
Normal Propyl and Ally] Compounds. 
Normal propyl. 
Difference. 
Allyl. 
ij cK 
Hydrocarbons .... 
550 
(34) 
483 
Iodides . 
795 
50 
745 
Bromides. 
686 
51 
635 
Chlorides. 
557 
53 
504 
Alcohols. 
869 
210 
659 
Ethylene and Acetylene Bromides. 
Ethylene. 
Difference. 
Acetylene. 
r, dp-. 
7/ d?. 
Bromides. 
1089 
194 
895 
Isologous Hydrocarbons. 
n. 
^ O' 
Diff. 
C/jHj;,. 
Diff. 
CnHojz —3* 
Diff. 
C^^H3^^ —g* 
»/ 0?. 
d?. 
V d?. 
5 
480 
60 
420 
65 
415 
6 
550 
67 
483 
-Ill 
661 
7 
593 
.. 
- 3 
596 
8 
646 
• • 
• • 
• • 
22 
624 
Substitution of Halogen for Hydrogen. 
Bromine for hydrogen. 
Chlorine for hydrogen. 
. 
n. 
Diff. 
CwHgwBr. 
Chlormethanes. 
Diff. 
ct~. 
rjd^. 
>] d\ 
2 
3 
4 (Iso) 
1089 
1085 
1274 
492 
399 
513 
597 
686 
761 
Methylene chloride . . 
Chloroform. 
Carbon tetrachloride 
587 
743 
1077 
156 
334 
: 
i 
4 H 2 
