Report of meeting held 17 Nov. 1938, with papers by T. Svedberg, K. Linderstrøm-Lang, K.O. Pedersen, F.J. and J. Philpot, D.M. Wrinch, A. Neuberger, W.T. Astbury, J.F. Danielli, J.D. Bernal and others. This was the occasion when Hodgkin gave a short, much-praised (and apparently unexpected) paper, under her maiden name one month before the birth of her son Luke (Ferry pp.170-172). Her contribution is on pp.35-36.