Enema Terebinthina. Br. - This is used specially in tympanites, or flatulence of the bowels; and is one of the most effectual remedies in that condition. it also sometimes answers a good purpose in spasm of the bowels, obstinate constipation, amenorrhoea, and threadworms in the rectum. it may be made by rubbing from half a fluidounce to two fluidounces of the oil with the yolk of an egg, or with mucilage of gum arabic, and mixing it with half a pint or a pint of water. The egg is peculiarly efficacious in facilitating an equable diffusion of the oil in the vehicle, which is important in order to prevent too concentrated an action on any one point of the membrane. The British Pharmacopoeia directs one fluidounce of the oil and fifteen fluidounces of mucilage of starch.