Volatile oils may be used in moderate amounts to give a distinctive taste to the otherwise rather insipidly tasteless paraffin oil. Among the more desirable oils to be used for this purpose would be oil of peppermint, oil of cinnamon, oil of betula or methyl salicylate and oil of cloves. From 2 to 10 drops of any of these oils can be added to a pint of the oil. When larger doses of the oil are to be given at one time, it would, of course, be advisable to use a comparatively smaller quantity of the volatile oil as a flavor.[76] [76] In addition to the articles referred to in the preceding footnotes, the following are of interest in connection with this subject: Editorial, Therap. Gaz., 1885, ix, 353. Junker, F. A.: Med. Record, London, 1885, xiii, 506. Editorial, Med. News, 1886, xlviii, 105. Dunbar: Deutsch. med. Wchnschr., 1896, xxii, 33. Stubenrath, Franz Casimir: München. med. Wchnschr., 1897, xliv, 639. London Letter, Med. News, 1899, lxxiv, 504. Hutchison, Robert: Brit. Med. Jour., 1899, i, 724. Schlesinger, E. G.: Boston Med. and Surg. Jour., 1913, clxix, 14. Lane, W. Arbuthnot: Brit. Med. Jour., 1913, ii, 1126; Proc. Roy. Soc. Med., 1913, vi, 49; Surg. Gynec. and Obst., 1913, xvi, No. 6. Jordan, Alfred C.: Practitioner, London, February, 1913. Chrysospathes, J. G.: Zentralbl. f. Chir., 1913, No. 45; abstr., The Journal A. M. A., Dec. 13, 1913, p. 2201. From the foregoing it would appear that apart from the Pharmacopeia of the United States, practically all other known pharmacopeias describe a water-white mineral oil under the title “Paraffinum Liquidum” or “Liquid Paraffin” as a colorless, odorless, tasteless, non-fluorescent, oily liquid, free from acids, alkalies and organic impurities. As explained before, the specific gravity of the preparation as recognized in other countries and as offered on the American market at the present time varies considerably, and there appears to be some difference of opinion as to the exact nature of the product that is preferable for use for different purposes. This matter requires further investigation. Since the definition of liquid petrolatum in the U. S. Pharmacopeia permits the use of fluorescent products of widely varying specific gravities, it is recommended that physicians who desire the water-white non-fluorescent (Russian) mineral oil should use the term “Petrolatum Liquidum, Grave,” or “Paraffinum Liquidum, B. P.,” if the heavy product recommended by Lane is desired, and “Petrolatum Liquidum, Leve” if the light varieties are required. It is further recommended that under the foregoing names, manufacturers and pharmacists be requested to dispense the products, in accordance with the following descriptions: