Scope and Contents 5 envelopes of papers on growth, senescence and death; passage of water through membrane (folder); arithmetical dynamics in zoology (envelope); animal dynamics (folder); plaice (pocket file); plaice ovaries (folder, cf. box 16); data on experiments on sponge currents (small envelope); two crambo experiments (envelope); The Challenger Society (printed leaflets etc. in folder); commonplace book (?) with miscellaneous notes on philosophical topics; small sketch book; two small notebooks...