| Description | E G T Liddell's dissertation 'The Excitatory and Inhibitory States in Reflex Activity' submitted for the degree of Doctor of Medicine at Trinity College, University of Oxford. Chapters include 'Observations on Spinal and Decerebrate Knee-Jerks with Special Reference to their Inhibition by Single Break Shocks,' 'Excitation and Inhibition in Recruitment Reflexes,' 'A Review of the Humoral theory of Excitation and Inhibition,' and a conclusion 'Concerning the Humoral theory applied to Interneuronic Loci.' Contains photographs of Liddell's experimental results. |