This American plant (Spigelia Marylandica) is a very good medicine for worms (vermifuge). It may be made into a a tea thus: Put together half an ounce of broken and bruised pink-root; senna leaves and fennel seed, each two drachms; manna, one ounce; and boiling water, one pint. Let it stand (after stirring) covered for an hour. Dose, a wineglassful for an adult, half a wineglassful for a child two or three years old, thrice daily. It is best not to go beyond these doses, as, in very large amount, it acts poisonously. There is a fluid extract of spigelia, also, a convenient preparation; dose, a teaspoonful; and still better (because the senna makes it more sure to pass off by the bowels), the fluid extract of spigelia and senna; dose of this also, a teaspoonful, repeated every two or three hours until it operates.