IV. 



record their deep gratitude for and appreciation of the services 

 rendered to the Society by the late Fkancis Aecher, T. J. 

 Moore, Dr. Drysdale and A. Norman Tate, the two latter 

 having filled the Presidential chair with great distinction. 



During the past Session nine new Members have been 

 enrolled, while the loss through resignation and death amounts 

 to twenty. The total numbers at present are — one hundred and 

 four Ordinary, seven Honorary and one Associate Members. 



The following is a summary of the proceedings of the Society 

 during the year 1892 : — 



JaniiMry loth. — The President elect, Mr. AVilliam Carter, M.D., F.R.C.P., 

 delivered his Inaugural Address, subject — " Some Facts and Fallacies of the 

 Microscope." 



February 19th. — In consequence of the continued illness of Mr. C. H. H. 

 Walker, the reading of his Paper, originally fixed for the 5th, was again 

 postponed. 



Mr. I. C. Thompson, F.L.S., F.R.M.S., kindly took his place, and read 

 a Paper ou "Difiraction and Aperture as affecting Microscopical Vision," 

 with Illustrations. 



March ilh. — The following Paper was read by Mr. Joseph Davies : — " Pedesis, 

 or the Brownian Movement of Particles." 



At the Conversazione the following subjects were illustrated : — 



Chalk with Nummulites J. M. Williams. 



Fresh Water Alga?, Characium Sieboldii, &c Thos. Birks. 



Hisperia Linea and Lineola, and their distinction F. N. Pierce, 



Pterodina Patina and variety Wii. Narramore. 



Section of Rhinoceros Horn W. H. Read. 



Pedetic motion of Pumice Stone particles suspended in 



pure water A. N. Tate. 



Pedetic motion of Gamboge particles suspended in sap 



from a tree, &c Joseph Daties. 



Pedetic motion of Indigo particles suspended in ordinaiy 



water, &c G. W. Gray. 



