Officers for the year 1957–58.

• President: L.H. Briggs, D.Sc., D.Phil. (Oxon), F.N.Z.I.C., F.R.S.N.Z.

• Vice-Presidents:· R. S. Allan, Ph.D. (Cantab.), D.Sc., F.R.S.N.Z. L. R. Richardson, M.Sc., Ph.D. (McGill).

• Honorary Treasurer: S. Cory Wright, M.C., B.Sc. (Eng.), A.M.I.C.E., M.N.Z.I.E.

• Honorary Editor: J. T. Salmon, D.Sc., F.R.S.N.Z., A.R.P.S., F.R.E.S.

• Honorary Librarian: L.R. Richardson, M. Sc., Ph.D (McGill).

• Secretary:. Miss M. Wood, F.C.I.S., Royal Society of New Zealand, Victoria University of Wellington, P.O.Box 196, Wellington, C.1.

• Cable and Telegraphic Address: Royalsoc, Wellington.