This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol1", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
Opium has been known, and probably used, from the earliest period of Grecian history. It ranks among the most important medicines, and, in the variety of its applications, and extent of its employment, stands at the very head of the catalogue. I shall first treat briefly of the indications it is calculated to fulfil, and afterwards, more at length, of its special uses.