lation showed an increase. This was probably because of relative inactivity in addition tu having ample supplies of food. Weight changes are shown in Appendices A and B. The special measurements taken on children age 19 or less showed no significant abnormalities. Chest X-ray examinations revealed only long-standing changes ascribable to previous disease.* Estimates of bone age from wrist X-rays! were in keeping with the stated age. X- rays of long bones showed no abnormalities ascribable to radiation effects. Of 40 Kahntests given to exposed individuals, three were 3+. Two of these gave a history of, or had physical findings consistent with, late syphilis. Previous yaws per se did not result in a positive Kahn test. REFERENCE sa . on ee MESTgingyeep Sen ST 1. John Caffey, Pediatric X-ray Diagnosis, Year Book Publishers, 1950. *The authors are indebted to CDR C. D. Burroughsfor interpreting the X-ray films. Morea « 13