1. Twenty-seven patients with a Brown-Séquard syndrome resulting from trauma have been studied, fourteen of the left side of the cord and thirteen of the right. There were sixteen gunshot wounds and eleven closed injuries.

2. The prognosis for recovery is much better than the initial catastrophic nature of the symptoms and signs would indicate.

3. The pattern of recovery is discussed in detail and the long and rather tedious course of the treatment is indicated.

4. Spasticity on the side worse affected still presents a difficult problem, but a less severe one than that presented by flaccid paralysis.