[50] We have been unable to ascertain through inquiries from the Surgeon-General's Office the nature of the experience which led to their incorporation in the ration, and whether they were added specifically as an antiscorbutic. They appear for the first time in the revision of the Army Regulations of 1895. The only reference to the antiscorbutic property of canned tomatoes which we have been able to find in the literature is in the excellent treatise by Munson on Military Hygiene. Recently it has been shown that lemon and orange juices (Givens and McClugage) can be dried and still preserve their antiscorbutic value. It is quite possible that concentrated preparations of this kind will be serviceable for army use and in regions where fresh fruit or vegetables cannot be obtained.[51] [51] Since the above was written, an article has appeared by P. W. Bassett-Smith (Scurvy: With Special Reference to Prophylaxis in the Royal Navy. Lancet, London, 1920, I, 1102) showing that _lemon juice can be prepared in tablet form_ and preserve its efficacy for at least three months. Each tablet contained the equivalent of 24 c.c. of lemon juice, and less than one-fifth of a tablet was sufficient to protect a guinea-pig from scurvy. This therapeutic procedure seems of great promise in providing an antiscorbutic ration for the navy or the army. Lind makes numerous ingenious suggestions for preparing antiscorbutic remedies (Lind, pp. 7, 8 and 9) which have a practical as well as historic interest. (Appendix 1.) One of these includes a formula for the preparation of orange and lemon juice which may be preserved for years; another gives a method for the preservation of berries and other fruits which are to be picked when partly ripe and put up in earthen pots; still another gives the recipe for preparing a simple decoction of fir tops, which was found by the Swedes efficacious in preventing the development of scurvy among their soldiers. It is interesting that a similar practice was resorted to in Vienna during the recent war and recommended as a prophylactic for scurvy in children (Tobler).