A SKETCH READ BEFORE THE MASS. HOM. MED. SOCIETY, OCT. 14, 1868. BY CONRAD WESSELHOEFT, M.D., OF BOSTON. THIS drug at first promised no very decisive results, but further acquaintance has convinced me that it will be one of the most useful remedies in our new materia medica. I have made several provings of it upon myself and have obtained a number from others, with dilutions as well as with considerable quantities of the tincture, and also with the root of the plant. While my own observations coincide perfectly with those collected by Dr. E. M. Hale, I have been enabled to add a few new peculiarities, and perhaps, to fill up a few vacancies by procuring some provings from females. Beginning with the head, numerous experiences point to the applicability of Iris to a certain form of "sick headache," characterized by dull, throbbing, or hammering, and also shooting or acute boring pains in one side (generally the left, or passing from right to left) of the forehead, with nausea. The headache, if beginning in the morning grows more violent in the afternoon and towards night, but is generally present and most severe in the afternoon and towards evening, aggravated by violent motion, but relieved by moderate exercise in the open air; such, at least, was my personal experience. Another peculiarity of the headaches is their paroxysmal charaoter, coming in repeated attacks through the day, or appearing at |