The preparation is a pale yellow, clear solution having an odor of alcohol. The addition of potassium ferricyanid solution does not produce any blue coloration, thus demonstrating the absence of ferrous chlorid (iron protochlorid). Instead potassium ferrocyanid solution produces at once an intense blue precipitate and potassium sulphocyanate solution an intense red coloration, thus proving the presence of iron in the ferric condition. It is obvious that the claimed superiority of Three Chlorides over preparations containing ferric iron is absurd. Since it contains iron in the ferric condition, Three Chlorides decomposes soluble iodids with the liberation of free iodin. The assertion that it is a suitable “vehicle” for the administration of iodids is likely to lead the physician unwittingly to administer free iodin. As the laboratory report shows, the “formula” of Three Chlorides (Henry) is incorrect, for protochlorid of iron (ferrous chlorid) was absent from the preparation. There is, however, a more serious objection to the formula than the misstatement of fact. When the physician is dealing with conditions that call for mercury, arsenic or iron, it is irrational and unscientific to prescribe a preparation containing these three drugs in fixed proportions. OBJECTIONABLE ADVERTISING Three Chlorides is marketed in bottles having the name “Three Chlorides” blown in the glass, in a carton containing a circular extolling the curative powers of this and other proprietaries of the same concern. Thus a physician who prescribes Three Chlorides is likely to place in the hands of his patient the advice that “Three Chlorides ... is suitable for the prolonged treatment of children ...” “In tertiary syphilis, with or without potassium iodide, it holds first rank among remedies directed against the specific taint ...” Further, that “Maizo-Lithium” is: “A Genito-Urinary Sedative” and a “remarkable uric-acid solvent.” Also that “Satyria” is: “An Ideal Genito Tonic and Nerve Reconstituent.” “Indicated in Prostatic trouble, Cystitis, Urethritis, Gonorrhea, Gleet, Leucorrhea, Sexual Debility and Impotence.” We are told that “As a hematinic, the protochloride of iron justifies the confidence of the medical profession.” “The protochloride, more than any other salt of iron, stimulates the paptic [_sic_] and hydrochloric glandular system of the stomach, increasing the flow of acid gastric juice.” It is unnecessary to discuss the truth or falsity of these assertions, since Three Chlorides does not contain the protochlorid of iron. For the same reason, it is obvious that the small amount of iron which it contains is the only possible justification for the claim that the preparation is “... Non-Productive of ... Constipation or Teeth Discoloration.”