are necessary. The word synthetic, however, has acquired an entirely different meaning, which has been used to a considerable extent in the past, usually in an honorable manner, but often for the purpose of deceiving not only the public, but physicians as well. This feature has been claiming recognition in no unmistakable terms during the past few months. It is held by some that the mixing together of the various cinchona alkaloidal salts, in proportion as found by analysis of the cinchona barks, the same dissolved in simple elixir and colored with caramel, is a elixir of cinchona bark. Other illustrations are the common headache mixtures, which consisted in the past, and at present to a lesser extent, chiefly of acetanilid, sodium bicarbonate or ammonium carbonate and caffein. These mixtures are at times so named as to lead to the belief that they are synthetic chemicals. In some cases a hypothetical chemical name, together with a structural formula, is attached to make the deception even more complete. Since the passage of the act the acetanilid has been replaced in many instances by para-acetphenetidin (commonly known as phenacetin) and antipyrin. This subject will be considered in a subsequent portion of this paper. It is also claimed that a so-called raspberry extract, made by dissolving various esters in alcohol (grain or wood) and coloring the solution with cudbear, is a raspberry extract. There are undoubtedly different views as to whether or not the latter claims are justifiable, but in my opinion the Arst definition, or a similar one, is the only one that should receive any recognition in the chemical world. As a matter of fact, the latter is simply used to attract the attention of the public and has no basis for existence whatever.