Unpublished paper, 'The chemical constitution of protoplasm as shown by the rate of tissue disintegration' by Horace M [Middleton] Vernon Vernon presents experimental observations regarding the chemical constitution of protoplasm. He describes the onset of the disintegration processes, the effect of sodium fluoride on the disintegrative process, the effect of ether and chloroform, the effect of lactic acid, the differential reactions of disintegrating tissues to stimuli and the adaptation to environment shown by disintegrating tissues. Annotations in ink throughout. Includes table of contents. Subject: Physiology / Chemistry / Biology Received 30 January 1906. Read 15 February 1906. Communicated by [Francis] Gotch. 1906