The following case, so far as we can ascertain, is only the second in which on microscopic examination a tubercle was found in the lumen of the central vein and the first in which such a tubercle has been associated with periphlebitis retinalis in the other eye. The clinical investigation of this case was made under the supervision of one of us (G. V. S.). REPORT OF A CASE Cutaneous tests to 0.001 and 0.01 mg. of old tuberculin were negative; a test A white man aged 31, a taxicab driver, was first seen in the outpatient department of the Episcopal Eye and Ear Hospital on Nov. 12, 1931, with the complaint of poor vision in the right eye for a few weeks. A history was obtained of recurrent attacks of poor vision, followed by intervals of improvement, during the past six years. The attack which brought the patient to