Pontifex, Son And Thorndyke by R. Austin Freeman

(Dr. Jervis's Narrative)

FROM my long association with Thorndyke, I was often able to deduce something of his state of mind and his intentions from observation of his actions. Particularly interesting was it to me to watch him (as unobtrusively as possible) packing his green canvas "research case" in preparation for some investigation, for, by noting carefully the appliances and materials with which he provided himself, I could form a pretty clear idea as to the points that he thought it necessary to elucidate.