Ch. M. Glasgow A. W. Kay, F.R.C.S., and others ............ 112 Anaesthetic Contamination L. Strnmin, F.F.A.R.C.S ................... 113 Serum Alkaline Phosphatase and Rickets T. C. B. Stamp, M.R.C.P., and Joan M. Round, B.SC . .......................... 113 Hyperactive Children W. C. M. Scott, L.M.S.S.A., D.P.M ........... 113 Calcitonin in Osteogenesis Imperfecta R. Smith, M.D., and others ....