1. The patient in the case being reported had injured her left forearm during an attack of typhoid.
2. Following the injury a swelling appeared on the left forearm.
3. For a year there was intermittent pain in the swollen area, the pain gradually growing more constant and more intense.
4. A roentgenogram showed a circumscribed abscess in the cortex of the left ulna.
5. The bone abscess was opened with a chisel and the cavity curetted.
6. The bacillus typhosus was obtained from pus taken from the bone abscess.
7. Six months after the bone abscess was opened, a roentgenogram showed the left ulna to be normal except for a slight irregularity of the surface of the cortex.
8. Three and a half years have elapsed, and there has been no recurrence of the abscess.