This section is from the book "A Treatise On Therapeutics, And Pharmacology Or Materia Medica Vol2", by George B. Wood. Also available from Amazon: Part 1 and Part 2.
One of these cathartics may be selected, when the milder have failed, and it is highly important that the bowels should be evacuated. A drachm or two of jalap may be given, suspended in mucilage; or about half the quantity of scammony, rubbed up with milk or the yolk of egg and water; or half a drachm of extract of colocynth and an ounce of soft soap dissolved in water, forming the Enema of Colocynth (Enema Colocynthidis, Lond.)) a pint of the vehicle being used in each case.