70 May 23 New York It is suggested that the increase of the English Sparrow will be self-limited. Already, as several have told me, sparrows are not as plentiful about Eastern cities as they used to be. This is due perhaps in part to replacement of the house by the motor, in other words, to reduced food-supply. In addition, as urged by Dr. Stone, other factors must come in—appearance of new checks such as internal parasites and external predatory enemies. Among the latter are crows around Washington, cats, & sharp-shinned hawks. It is thus to be expected that the native birds will gradually come into their own again. At Amer. Mus.—I find that F.M. Chapman has left for South America. W.deW. Miller is in