EXTRACT, in pharmacy, the name given to preparations formed by evaporating or concentrating solutions of active prin ciples; tinctures are solutions which have not been subjected to any evaporation. "Liquid extracts" are those of a syrupy con sistency, and are generally prepared by treating the drug with the solvent and causing the solution to be concentrated until it attains the desired consistency. "Ordinary extracts" are thick, tenacious and sometimes even dry preparations.