CASE VIII.—C. H., aged thirty-eight. Failure of sight (two years) from double optic atrophy; pupils medium, with Argyll-Robertson phenomenon; moderate double ptosis, but no ocular paralysis; shooting pains in lower limbs (eight years); knee-jerks absent; considerable ataxia and failure of control over bladder; syphilis at nineteen years. CASE IX.—G. S., aged forty. Pallor of disks and peripheral contraction of visual fields; four months later loss of knee-jerks and gradual development of ataxia; pupils normal throughout; death at the end of twelve months with symptoms of meningitis; syphilis at twenty-five years. II.—CASES WITH ARGYLL-ROBERTSON PHENOMENON. (_a_) _Argyll-Robertson Phenomenon, without Other Evidence of Disease._ CASE X.—A. L., aged thirty-three, the subject of slight hypermetropic astigmatism. Pupils small, not quite circular, with Argyll-Robertson phenomenon; no other ocular defect, and no evidence of a spinal lesion. No history of syphilis. CASE XI.—K. S., aged forty-three. Pupils rather small, unequal, quite destitute of light response, though moving freely in convergence; no other ocular defect except some presbyopia; no evidence of spinal disease, though left knee-jerk not easily obtained. Unmarried; syphilis seems highly improbable. CASE XII.—G. G., aged sixty. Pupils small, with distinct Argyll-Robertson phenomenon. Knee-jerks, not easily obtained, but not definitely abnormal, and no other evidence of spinal disease. Patient suffers from defective vision, probably from tobacco poisoning (central scotoma for red); no history or evidence of syphilis. (_b_) _Argyll-Robertson Phenomenon, with Other Ocular Disturbance Suggestive of Locomotor Ataxia._ CASE XIII.—D. T., aged forty-two. Pupils below medium size, destitute of light response, with free movement in convergence; had for seven days suffered from diplopia, and under observation gradual development of complete paralysis of right external rectus; no other ocular defect. Knee-jerks distinct, and no suggestion of spinal disease; chancre of lip and secondary syphilis nine years before. (_c_) _Argyll-Robertson Pupils, with More or Less Evidence of Spinal Disease._ CASE XIV.—T. F., aged fifty-five. Right pupil 2mm., left 3 mm., each with Argyll-Robertson phenomenon; no other ocular defect except presbyopia. Ten years ago had difficulty in passing urine, and since then occasionally voids it involuntarily, and for eighteen years has been liable to seizures of pain in calves, insteps, and heels; knee-jerks normal, and no objective signs of spinal disease. Venereal sore when aged twenty, but no secondary symptoms, and father of six healthy children.