The senior Erb, at the last Congress of Internal Medicine held at Leipsic, gave an epitome of his observations on this disease since the publication of his long article on the subject in 1898. In his earlier paper he showed the close relation of "intermittent lameness" (intermittierendes Hinken) to arteriosclerotic changes in the vessels of the leg and foot. His more recent studies are of great interest in connection with the etiology of the affection.
Since the disease is a form of arteriosclerosis, the same causes that are held responsible for arteriosclerosis in general may be assumed to play a part in its etiology, but certain peculiar facts seem worthy of emphasis. In the first place the disease is one of the upper classes rather than of the lower; of 45 cases studied by Erb only two were not within his clinic; the rest were private cases. Secondly, it is