Pellitory, Anacyclus Pyreihrum. Half a dozen pharmacopeias, including our own, retain this "heap powerful medicine," probably because some people like to chew it as a sialagogue and because druggists sell it as "Persian Insect Powder" instead of the Asiatic variety, and put it in "Our Own Dentifrice." Assuredly there is no occasion to retain it as a medicinal agent in this late day.