Notes on papers passed for publication in the Proceedings A V Hill, FRS, 'The series elastic component of muscle'. A V Hill, FRS, 'The development of the active state of muscle during the latent period'. G Causey and G Werner, 'The distribution of the phosphorus and radioactive phosphorous in peripheral nerve during rest and activity'. Communicated by J Z Young FRS. J D Fulton, L P Joyner, H King FRS,, J M Osbond and J Wright, 'Amoebicidal action and chemical constitution'. A V Hill FRS, 'A note on the heat of activation in a muscle twitch'. p20. March - May 1950