It is interesting to find in the records of the Society the subjects of the dissertations contributed by Reid during the six years in which he was its mainspring,[9] as well as the questions which he proposed for debate. They signally illustrate the course of his thoughts in these years. On May 24, 1758, ‘Mr. Reid intimat that he designed as the subject of his discourse some Observations on the Philosophy of the Mind, and particularly on the Perceptions we have by Sight.’ On June 17, 1758, he read a paper ‘On the Difficulty of a just Philosophy of the Human Mind; General Prejudices against D——d (_sic_) Hume’s System of the Mind; and some Observations on the Perceptions we have by Sight.’ On March 14, 1759, he presented an ‘Analysis of the Sensations of Smell and Taste.’ On 26th February 1760 ‘Mr. Reid intimat that in his discourse he was to continue his Analysis of the Senses’; and accordingly, on the 20th of August in the same year, he gave notice of his intention of ‘taking Dr. Gregory’s place and reading a paper on the Sense of Touch.’ In July 1761 he appears with a paper on the ‘Transit of Venus’ in that year; and on the 26th January 1762 he gives a ‘Valedictory Address,’ as first annual president of the Society (the members having previously taken the chair by rotation)—on ‘Euclid’s Definitions and Axioms,’ in which he returns to the favourite studies of his youth. In 1761 he had resumed his investigation of the Senses, for in September he is credited with another paper on the ‘Sense of Seeing.’ His last contribution, in October 1762, was on ‘Perception,’ which summed up his characteristic work in the Society. And after reading this paper, ‘Mr. Reid declined to give it for insertion in the Records, in regard that he proposed soon to send it to the press, along with some other discourses which he had read before the Society.’ A minute on 28th October 1764 announces that, ‘as Dr. Reid has left this country, no discourse is to be expected from him.’