VII. Toxic conditions and blood diseases: Chronic lead poisoning, 3. Ulcerative endocarditis, (fatal), 1. Purpura hemorrhagica (fatal), 1. Henoch’s purpura (fatal), 1. Chlorosis with cerebral symptoms (recovery), 3.
VIII. Headache and double optic neuritis (without localizing symptoms); probably syphilitic (recovery, with blindness, 2; with impaired vision, 4), 6.
IX. Headache and double optic neuritis (without localizing symptoms); no evidence of syphilis; duration six and two and a quarter years, respectively. Termination still uncertain, 2.
X. Headache and double optic neuritis (without localizing symptoms); no evidence of syphilis; recovery with blindness, 8; with impaired vision, 3; with good vision, 8, 19.
The following are brief abstracts of the notes of the cases in Group X. which have come under our observation and which we have followed for a considerable period of time. The number of years during which each case has been followed is given in parentheses after the brief note.
1. A boy, aged ten years. Double optic neuritis, headache, and vomiting; slight internal strabismus of the left eye. Recovery with normal vision. (Seven years.)
2. A young woman, aged seventeen years. Headache, vomiting, and double optic neuritis. Recovery, but with impaired vision in one eye and blindness in the other. (Five and a half years.)
3. A young woman, aged eighteen years. Double optic neuritis, headache, and vomiting; several epileptic fits. Recovery, with useful vision in one eye; vision in the other is very defective. (Seven years.)
4. A young woman, aged eighteen years. Double optic neuritis, headache, and vomiting. Recovery, but complete blindness followed. (Four years.)
5. A young woman, aged nineteen years. Double optic neuritis, headache, and vomiting. Recovery with good vision. (Three years.)