Chemistry and Physics. 53 
acme and then converted into olefines by treatment with alcoholic 
pota These olefines were treated with cold hydrochloric acid, 
each of them being thereby separated into two fractions, one of 
which dissolved in the acid, while the other did not. The latter 
fractions “ssn secondary alcohols when suitably treated, that 
from the ane being methyl-butyl carbinol and that from the 
heptane ‘tren methyl-penty] carbinol. It hence appears that the 
derivative olefines are normal, and _— ra ries sgh oe CH,=CH 
2n+1. The former olefines ose soluble in hydro- 
SWicrie: acid in the cold, yielded Sooheae which appeared to be 
secondary, but which need further investigation. 
In some remarks upon this ete: a says that the 
above results do not necessarily prove the presence of a third iso- 
meric heptane in petroleum. He sotiees when treated with chlorine 
yields one primary, and may yield three secondary chloride 
re 
parafiin is necessary ; and the author proposes to make additional 
experiments with hexane from mannite.—J. Chem. Soc., I, xiii, 
301 ce se = so G. F. B. 
ether ; remaining li td did not contain a trace 0 
It was distilled with barium hydrate, the 
distillate being collected in aleohol and examin trace of 
methylamine or of dimethylamine could be detected. The residue 
from the evaporation of the alcohol, treated with platinic chlor- 
de, gave pure trimethylamine chloroplatinate. Pushing the 
g ead 
tillation still further, alkaline vapors were evolved, and the solu- ~ 
tion afforded on examination tetrmethytammonium chloride. 
1875 < 
5. On Glyceryl ether.—This ether, first discovered ie Roti 
mann and von Zotta, is prepared by dehydrating glycerin by 
means of calcium chloride. Von Zorra has re-investigated the 
