1. What are the clinical evidences of syphilis outside the nervous system? The brownish branny eruptions of the skin, the depressed scars and the scaly eruption on right heel and sole are very suggestive of syphilis. Such clinical evidences of syphilis are very important in systematic examination. Although the laboratory tests are of the utmost assistance in the diagnosis of syphilis, the clinical signs should not be neglected, and no physician should rest satisfied with laboratory signs alone. X-ray diagnosis of bone conditions sometimes succeeds when all other methods have failed. =GUMMA of cerebral cortex verified by operation; death.= =Case 27.= The presenting picture in the case of David Tannenbaum was that of deep dementia, in which condition the patient was brought to the hospital. There was a meagre history to the effect that about four months before admission, he had lost his job in a hotel through lack of further work. We heard that at this time he had begun to suffer with excruciating pains in the head; at first, worse at night, later, worse by day. It appeared that this pain, though it came and went, was chiefly localized on the left side of the head. For a fortnight, Tannenbaum had been dragging his legs, until finally he had become unable to walk at all. _Pari passu_ with these developments, Tannenbaum had become mentally confused and irritable, and his memory had become untrustworthy. For several days before admission, an appearance of marked dementia was presented, with slow incoherent, or at all events, irrelevant words, and a complete disorientation for person. However, his vision had become so poor that it would have been hard for him to have recognized any one. It appeared that the family history was entirely negative; that the patient was without education but had been physically very strong, and had been fairly successful at first in the junk business, and later in the clothing business; but latterly he had been less fortunate in the clothing business, and finally had to resort to work as a laborer around a hotel. His wife had had eleven pregnancies with but one miscarriage. Nevertheless, out of the eleven pregnancies, there were now but four living children. =Physically=, Tannenbaum was a rather small man; he was flabby and looked as if he had recently lost weight. The skin showed areas of pigmentation on the face and sides of the neck, and some dark copper-colored circular areas, marble-size, in the neck (syphilitic?). There was a slight radial arteriosclerosis. The heart was slightly enlarged with distant and indistinct sounds. There was a small pedunculated growth on the right side of the abdomen.