loih January, IQIJ- 



Professor J. A. Lindsay, M.A., M.D., F.R.C.P., President, 

 in the Chair. 



"ANIMATED MOTION." 

 By Professor William Stirling, M.D., D.Sc, LL.D. 



(Abstract) 



The Chairman said they were honoured by having a dis- 

 tinguished representative of science with them that night, and in 

 their name, as well as in the name of the Belfast Natural History 

 and Philosophical Society, he offered Dr. Stirling a very cordial 

 welcome. Dr. Stirling occupied the chair of physiology in 

 Victoria University, Manchester, and he was the author of several 

 well-known handbooks on subjects relating to that chair, He had 

 also acquired a most distinguished reputation as a pubHc lecturer, 

 and he was sure the large audience in that hall would listen with 

 the greatest pleasure and interest to Dr. Stirling's address. 



The Lecturer, who was cordially received, said movement 

 was one of the most characteristic features of active animal life, 

 but movement was not confined to animals ; it was also manifested 

 in some very remarkable forms, even by plants, especially by those 

 plants which were of somewhat low origin. That night he proposed 

 to show them a series of films dealing with movement studied 

 from the physiological point of view. As they knew, there were 

 some movements easily analysed by the naked eye, but there were 

 other movements which were not so easily analysed. He asked 

 them to pay special attention to certain films which exhibited to 

 them an entirely new departure in cinematography. If they took, 

 for instance, 2,000 impressions per second and slowed it down to 



