JOHN INNES HORTICULTURAL INSTITUTION Bayfordbury, Hertford, Herts, From 1 October, 1953, Mr W. J. C. Lawrence, V.M.H., will become Acting Director of the John Innes Horticultural Institution. From the same date the former Director’s address will be: Professor C. D. Darlington, F.R.S. Department of Botany University of Oxford