Age does not seem to play a definite rôle in regard to the incidence among adults. Scurvy frequently has been encountered among old men, and is of common occurrence among the most vigorous of the nation, the young soldiers and sailors. Some have stated that it takes place less often among soldiers in the twenties than among those in the thirties, but this has not been demonstrated. The fewest cases have been reported among children over two years of age. It was due to the apparent immunity of this age-group that, until very recently, German writers doubted the identity of infantile and adult scurvy. The exclusion of children of this age is merely fortuitous and, moreover, is by no means absolute. One of the earliest cases of scurvy in children, reported by Montfalcon, occurred in a child six years old. Bateman in America described a case in a child of about this age. Barlow, in one of his first articles, reported scurvy in a small group of older children. The case so frequently quoted by German authors in this connection is that of Fraenkel, who described both clinically and pathologically a case of scurvy in a boy eight years of age. These cases by no means exhaust the number which are reported. Recently, Tobler has given us an account of scurvy, occurring during the war, in a Viennese foundling asylum which harbored children between the ages of two and fourteen. =Season and Climate.=--Many of the older writers laid great stress on the influence of season on the occurrence of scurvy, which they believed broke out particularly in the cold and damp months of the fall, winter and early spring. It is true that most of the epidemics have occurred at these seasons of the year. This is merely what should be expected, considering that the disease depends mainly upon the supply of fresh fruits and vegetables. Where conditions are abnormal, as in war, there have been notable exceptions to this seasonal incidence. In the "Report of the War of the Rebellion" there is an instructive graph illustrating the occurrence of scurvy in our Civil War and in the Crimean War, which shows that this disease prevailed to the greatest extent during the winter months in the former, whereas in Crimea, the season of greatest frequency was the summer time. One of the severest outbreaks of scurvy on record is that which occurred at the siege of Thorn in Germany in the year 1703. During the months of July and August, when the weather was excessively hot, scurvy ravaged the besieged army. There are, furthermore, many reports of scurvy in the tropics during the dry season. In the island of Aruba, in the Dutch West Indies, which has been visited by scurvy year after year, and which is referred to elsewhere, the disease is endemic during the dry, hot season. Formerly it broke out on the men-of-war and vessels of the mercantile marine while they were in southern waters. As regards infantile scurvy, it has always seemed to