Twenty Seventh Lecture Typescript account of a lecture given by Norman on the classification on insanity, which Norman states is best described without patients present. He discuss the difficult of arriving at any complete scheme of classification, then presents a scheme being developed by 'the Association with which I am connected', although he warns it is not 'a perfect scheme at all'. Norman goes through the various classifications, identifying the key fearures and referring back to cases seen by the class in previous lectures. 18 May 1906