QUEKETT MICROSCOPICAL CLUB. 349 



may be no one can say, for it cannot be seen with sufficient dis- 

 tinctness for identification. Probably in its cleaned state it may 

 be a very common and well-known form, but had it not been for 

 its filaments, its presence in these sandy conglomerations would 

 never have been suspected. Other species of diatoms on this slide 

 were quite free from sandy grit. 



Mr. Nelson ako sent a note on Amphipleura Lindheimeri. 



At the 495th ordinary meeting of the Club, held on January 

 27th, the President, Prof. A. Dendy, D.Sc, F.R.S., in the 

 chair, the minutes of the meeting held on December 23rd, 1913, 

 were read and confirmed. 



Messrs. H. A. Gee, G. H. Shelley, A. Walker, the Rev. G. H. 

 Nail, Lieut.-Col. J. Clibborn and L. E. Harris were balloted for 

 and duly elected members of the Club. 



The list of nominations by the Committee of officers for the 

 ensuing year was then made there being no change from that 

 elected last year. 



The President having mentioned that four members of the 

 Committee Messrs. Wilson, Heron- Allen, Bryce and Caffyn 

 would retire by rotation, but were eligible for re-election, except 

 Mr. Caffyn, who did not wish to serve again, asked for nomina- 

 tions of members to fill the vacancies created. 



The following gentlemen were thereupon nominated : Messrs. 

 Heron -Allen, Wilson, Bryce, Gabb, A. Morley Jones and Todd, 

 whose names would appear on the voting paper at the next 

 ordinary meeting. 



Mr. A. E. Hilton was then elected as Auditor on behalf of the 

 members. 



Mr. S. C. Akehurst (Hon. Librarian) read " Some Remarks on 

 Sub-stage Illumination " ; the subject was illustrated by a number 

 of photographs projected upon the screen. 



Mr. T. A. O'Donohoe read a paper, entitled "An Attempt to 

 resolve Pinnularia nobilis" This was illustrated by photographs 

 projected upon the screen. 



Mr. M. A. Ainslie said that the whole question of diffraction 

 spectra was of course of vital importance in the resolution of any 

 fine structure, and in many cases it could not be done with a dry 

 lens. By means of diagrams drawn on the blackboard as he pro- 



