216 Annual Report of the Council. 



Mathematics, and held that post till 1865. His counsel was 

 sought and held in esteem by the Trustees of the College, and 

 the opinions he gave on several matters are reproduced in 

 Mr. Joseph Thompson's book on the College, and indicate 

 well the character of the man. Mr. Sandeman's special study 

 was addressed to the fundamental principles of Elementary 

 Mathematics. In his Principles of Arithmetic, and, more 

 especially, in his Pelicotetics, he elaborates the basis on 

 which arithmetic is founded, and presents an analysis more 

 complete than any other which has been offered. At the 

 same time, the book leaves the impression that Sandeman 

 was a logician rather than a mathematician, and he was so 

 esteemed by Jevons. He also wrote a book on the motion 

 of a particle. Sandeman's habit of thought led him to insist, 

 at the beginning of each branch of the subject he professed, 

 upon a full consideration of the fundamental principles ; he 

 demanded for this purpose a much more complete school 

 education than his students possessed, and more severe 

 application than any considerable portion of them desired 

 to give. As a teacher he was not a success, and if the 

 students were discontented with him, he was dissatisfied with 

 them. In 1865 he resigned the professorship, and returned 

 for a short time to Cambridge, when family reasons forced 

 him to assume the charge of the business house at Perth. 

 This became his occupation till his death. Although he 

 lived very much as a recluse, he always retained his interest 

 in the Society, of which, at the time of his death, he 

 had been a member for forty-two years, having been elected 

 in 185 1. R. F. G. 



In Charles Clay, who died at his residence, 

 Poulton-le-Fylde, near Blackpool, on September 19, 1893, 

 the Society has lost one of its oldest friends — Dr. Clay's 

 connection with it having extended over the long period of 

 more than fifty-two years — and the medical profession in 



