Gum guaiacum (pulverized), 2 troyounces.

Balsam of Peru, 2 fluidrachms.

Oil of sassafras, 1 fluidrachm.

*Volatile oily spirit, 1 pint.

"Digest the gum guaiacum and balsam of Peru in the volatile oily spirit for six days, in a closely stopped vial which is now and then shaken; afterwards strain the tincture and add it to the essential oil of sassafras." (Edinburgh Pharmacopoeia, 1770.) *Volatile oily spirit was made as follows: Take of

Volatile sal-ammoniac, 8 ounces.

Essential oil of rosemary, 1 1/2 ounces.

Oil of amber, 1 ounce.

Essence of lemon peel, 1/2 ounce

French brandy, 1 1/2 gallons

Draw off by distillation, in the heat of a water bath, near one gallon (Edinburgh Pharmacopoeia, 1770.)