341 



almost despair with which he contemplated what they might be 

 coming to. 



Mr. E. M. Nelson said that Mr. Edward Swan had sent three 

 simple microscopes for exhibition which were of some interest. 

 The lenses were of the form known as Coddingtons', although 

 Coddington had nothing whatever to do with their invention. 

 It was Wollaston who first suggested placing a diaphragm between 

 two plano-convex lenses ; Brewster subsequently improved this 

 plan by making both the plano-convex lenses hemispheres, and 

 afterwards he constructed the lens out of a solid sphere of glass, 

 a groove being cut round its equator and filled with black paint 

 for a diaphragm. 



These lenses are mounted as " Compass " microscopes. The 

 " Compass Microscope " was introduced as early as the year 1702, 

 but the examples upon the table were designed by Mr. Gairdener, 

 and made by Bryson of Edinburgh. Mr. Parsons has found them 

 figured and described in "Carpenter on the Microscope," 1st 

 Edition, p. 66, fig. 17. Mr. Newton Tomkins shortly afterwards 

 designed an improved form which is figured and described in the 

 "Transactions of the Microscopical Society of London," vol. vii., 

 p. 57 (1859). Mr. Newton Tomkins was a prominent member 

 of the Microscopical Society, and was instrumental in bringing 

 Mr. Moginie's microscopes to public notice. He mentioned this 

 because Moginie's microscopes may often be seen in use in this 

 Club. 



Meetings for the ensuing month were then announced, the 

 Secretary again reminding the members that their next meeting 

 would be the Annual Meeting of the Club. 



Annual Meeting. — February 16th, 1900. 

 J. Tatham, M.A., M.D., F.E.M.S., President, in the Chair. 



The Minutes of the preceding meeting were read and confirmed. 



The following gentlemen were balloted for and duly elected 

 members of the Club : — Mr. E. E. Barker, Mr. B. E. Crossland, 

 Mr. Thomas A. O'Donohoe, Mr. F. Tomlinson, and Mr. E. H. 

 Barrett. 



