[AL] See also preceding reports on Liquid Petrolatum or “Russian Mineral Oil” and Clinical Experience with Liquid Paraffin (Liquid Petrolatum). Angier’s Emulsion is essentially a petroleum product. When it was first put on the market commercial interests had been fostering the idea that petroleum products had food-value, and the manufacturers of Angier’s Emulsion, making use of the idea, advertised it as a “food-medicine” and an “ideal substitute for cod-liver oil.” The impression thus created has been kept alive through persistent advertising in spite of scientific proof to the contrary. To-day many who know that petroleum products have no food-value are still likely unconsciously to class Angier’s Emulsion among nutrients. Although the manufacturers now advertise this product as “purely mechanical in its action,” they yet show a disposition to profit by the old misapprehension, since, so far from expressly disavowing the old claims as erroneous, they mingle with the new ones vague claims of “tonic and reconstructive merits” apparently designed to sustain, in those who do not take time to consider the evidence carefully, the old faith in the claimed nutritive qualities of the preparation. While the Council judges a preparation by the claims made for it at present, and not by any past misstatements when these have been thoroughly corrected, the past advertising of Angier’s Emulsion so instructively illuminates the scientific worthlessness of proprietary therapeutic claims in general, and the whole course of its history is so typical that the referee has thought it well to review the subject briefly. The Council has authorized the publication of the following report. W. A. Puckner, Secretary. Angier’s Petroleum Emulsion was brought out in 1881--that is to say, before the food-value of petroleum products had been experimentally disproved. Its advertising history well illustrates the weed-like vitality of a financially profitable therapeutic fallacy. The shifting claims made for this preparation are such good examples of the generally unreliable therapeutic pretensions of proprietary medicines--whether of the “patent medicine” or of the “ethical proprietary” type--that it has been deemed advisable to present a brief review of the conflicting claims made for it at various times. A PETROLEUM PRODUCT