Family news. Work with Williams using string galvanometer, results of experiments on proprioception and 'action currents', and interpretation of the results. Interest in Sherrington's last three papers and one by Graham Brown. Sherrington's attribution of discovery to Forbes. Query re: Sherrington's abandonment of the concept of 'rebound'. Interest in Sherrington's attainment of 'regular rhythm by balancing E+I'. Query re acceptance of Piper over Buchanan on motoneurone discharge. Discussion of evidence for rhythmic discharge of nerves and experiments re: this with Williams. Query re: crossed extention reflex in hopping animals, enclosing copy of notes on auditory reflex in cats ('I will send you the results of histological examination of the brain when I know them'), visit by Tozer.