1931. W. P. Evans, M.A., Ph.D., F.R.S.N.Z.—For research in pure and applied chemistry. 1932. Te Rangi Hiroa (P. H. Buck), M.D., Ch.B (N.Z.) F.R.S.N.Z.—For researches in Maori ethnology. 1933. W. N. Benson, B.A., D.Sc., F.G.S., F.R.S.N.Z., and J. Marwick, M.A., D.Sc., F.R.S.N.Z.—For researches in New Zealand? geology. 1934. G. E. Weatherburn, M.A., D.Sc.—For outstanding original work in mathematics, especially in the use of vector analysis. 1935. W. B. Benham, M.A., D.Sc., K.B.E., F.R.S., F.R.S.N.Z.— For original researches in New Zealand zoology. 1936. W. R. B. Oliver, D.Sc., F.L.S., F.Z.S., F.R.S.N.Z.—For-research in New Zealand botany. 1937. J. R. Hosking, B.Sc., Ph.D.—For research in the chemistry of New Zealand plants. 1938. H. W. Williams, M.A., Litt.D., F.R.S.N.Z.—For researches in ethnology. 1939. J. A. Bartrum, M.Sc., F.R.S.N.Z.—For researches in geology. Award of the Hutton Memorial Medal. 1911. W. B. Benham, M.A., D.Sc., K.B.E., F.R.S., F.R.S.N.Z.—For researches in New Zealand zoology. 1914. L. Cockayne, C.M.G., Ph.D., F.R.S., F.L.S., F.R.S.N.Z.—For researches in the ecology of New Zealand plants. 1917. P. Marshall, M.A., D.Sc., F.G.S., F.R.S.N.Z.—For researches in New Zealand geology. 1920. J. E. Holloway, L.Th., D.Sc., F.R.S., F.R.S.N.Z.—For researches in New Zealand pteridophyytic botany. 1923. J. A. Thomson, M.A., D.Sc., F.G.S., F.R.S.N.Z.—For researches in geology. 1926. C. Chilton, M.A., D.Sc., LL.D., M.B., CM., F.L.S., F.R.S.N.Z.—For his continuous researches on the amphipodouscrustacea of the Southern Hemisphere. 1929. G. V. Hudson, F.E.S., F.R.S.N.Z.—For research in entomology. 1932. J. A. Bartrum, M.Sc., F.R.S.N.Z.—For researches in-geology. 1935. G. H. Cunningham, D.Sc., F.R.S.N.Z.—For research in mycological botany. 1938. David Miller, Ph.D., M.Sc., F.R.S.N.Z., F.R.E.S., F.L.S.N.S.W.—For researches in entomology. Grants from the Hutton Memorial Research Fund. 1919. Miss M. K. Mestayer £10, for work on the New Zealand mollusca. 1923. Professor P. Marshall £40, for study of the Upper Cretaceous ammonities of New Zealand. 1927. Miss M. K. Mestayer £30, for research on brachiopoda and mollusca.