72 Royal Society ;— 
ether prepared in this manner gave the following numbers on ana- 
lysis :— 
Theory. Experiment. 
Cf .. vf 9°17 56°29 
H,,.... 8°04 8°75 
OI ae 
The quantity of this substance at my disposal was so small (the 
greater part of my product having been lost) that I could not purity 
it completely ; hence the experimental numbers do not exactly accord 
with the theoretical. 
~ 
Action of Hydrochloric and Benzoie Acids on Glycol.—Formation 
of Chlorbenzoate of Glycol. 
A mixture of equivalent quantities of glycol and benzoic acid, pre- 
viously fused and powdered, was exposed to the action of dry hydro- 
chloric acid gas for several hours, the mixture being maintained at 
the temperature of 100° during the action of the acid, as in the case 
of the former compounds. The product thus formed presented the 
appearance of a soft white solid, and contained a considerable quan- 
tity of uncombined benzoic acid. This was removed by agitating it 
with hot water, till, on cooling, it no longer became solid, but re- 
mained perfectly fluid. Finally it was dissolved in alcohol, and pre- 
cipitated by water. The body thus prepared, and without being 
distilled, was analysed, having been previously dried iz vacuo over 
sulphuric acid. Another specimen, prepared in the same manner, 
at a different time, was also analysed, having, however, been previ- 
ously distilled. During the distillation it was observed that not a 
drop of fluid passed over till the mercury had risen to 254°, and be- 
tween that temperature and 270° the entire liquid distilled over. 
What passed over between 260° and 270° was collected separately ; 
this was the portion analysed. The numbers obtained on analysis 
agree with the formula C! Ee O \ O,,as the following Table shows:— 
li Ges 
Cl 
Theory. Experiment. Portion distilled. 
‘= I, Il. 
C,,.. -- 98°54 59°70 ve 58°69 
Be ey 501 i 531 
O 17°39 
Cl 19°24 17°93 
100-90 
The portion not distilled contained doubtless a trace of free ben- 
zoic acid, which would affect the carbon and chlorine, but not the 
hydrogen. 
Chlorbenzoate of glycol, as I shall call this compound, has a 
