Note 270 — A CYCLOPÆDIA OF PRACTICAL RECEIPTS, &c. VOLUME II (continued 46)
Reading edition
Alcohol of ·825 contains 92·6% of real or anhydrous alcohol; or, in the language of the Excise, is about 621⁄2% o.p., and in round numbers may be said to be of about twice the strength of brandy or rum, as usually sold.