ON THE NORMAL PARAFFINS. 
27 l 
The first five fractions consisted of a fine crystalline powder, the last three were 
glistening needles. 
These observations clearly indicate that only pentoio and acetic acids had been 
formed by the oxidation, and therefore that the Pinus heptylene is pure butyl- 
methyl-ethylene, C 4 H 9 .CH = CH.CH 3 , which had been formed from the secondary 
heptyl chloride, C 4 H 9 —CH 2 —CHC1.CH 3 . 
These results, taken in conjunction with those of former investigations, leave no 
doubt, therefore, that by the action of chlorine upon a normal paraffin not all the 
chlorides indicated by theory are formed, but only the primary and a secondary 
chloride which contains the group — CHC1.0H 3 . One of us has formerly shown that 
by the action of bromine upon normal paraffins from petroleum only secondary 
bromides corresponding to chlorides are formed (Phil. Trans., 1878, Part I., p. 49). 
Venable has since shown that Pinus heptane is acted upon in the same way (Ber. 
Deutsch. Chem. Ges., Bd. xiii., S. 1649). 
