“Darpin” or Kennedy’s Pinus Canadensis, Dark, does contain tannin, but, as the simplest of chemical tests demonstrate, Pinus Canadensis, Light, does not contain tannin. It might as truthfully be called maple syrup or beef tea. It is almost a work of supererogation to discuss the therapeutic claims made for preparations sold under false pretenses as to composition. It is enough to mention that Kennedy’s Pinus Canadensis, Dark or Light, is recommended in Albuminuria Diarrhea-Dysentery Fetid Perspiration Endometritis Fissures Fistula Gonorrhea Hemorrhage from the Nose Uterine Hemorrhage Leucorrhea Nasal and Pharyngeal Catarrh Piles Sore Throat Ulceration of the Cervix The intelligent physician of to-day knows that his forefathers in the days of the stage-coach employed tannic acid in its crude form and treated intestinal disease in a very unsatisfactory manner; he knows, further, that advances in our knowledge of pathology have rendered the use of tannic acid in gastro-intestinal therapeutics largely unnecessary and that when it is used it should be in some form that will pass the stomach unchanged. So far as its use as local application is concerned, he knows, without need of instruction from the Rio Chemical Company, when tannin is indicated, and the Pharmacopeia furnishes a suitable preparation for the physician so that he need not resort to an unscientific nostrum like Darpin. The physician who is competent to treat a case of gonorrhea does not need to be told that alum and zinc sulphate may be useful in such conditions, and he does not want them palmed off on him for something else under the name of Pinus Canadensis, Light, Abican or what not. Also, he prefers to use them, when they are needed, singly and in strength suited to the conditions of the individual case.