396 PROCEEDINGS OF TflE 



of an Anopheles larva that he had taken at Epping in July 1913, 

 and stated that he had found two others at Lyon House in August 

 of the same year. Mr. Hilton moved a vote of thanks to 

 Mr. Lang for his kindness in sending the specimens and writing 

 a description of them, which was passed with acclamation, and 

 after some further remarks by Dr. Rodman and Dr. Leeson a 

 hearty vote of thanks was accorded to Mr. Ofltord for his interesting 

 address. A paper by Mr. E. M. Nelson on " The Measurement of 

 the Magnifying Power of the Microscope " was taken as read. 



At the 531st Ordinary Meeting of this Club, held on 

 February 12th, 1917, the President, Dr. A. B. Rendle, M.A., 

 F.R.S., F.L.S., in the chair, the minutes of the meeting held on 

 January 8th were read and confirmed. 



Messrs. A. Goodman, Benjamin J. Thomas and Arthur H. 

 Niblett were balloted for and duly elected members of the Club. 

 Nomination forms were read for the first time on behalf of four 

 candidates. 



The President read the list of nominations for the officers 

 and four members of the committee for the ensuing year. There 

 was very little change, and the nominees were duly elected. 



The Secretary read the 52nd annual report, and the Treasurer 

 the balance sheet. Both indicated that the Club's affairs are 

 in a satisfactory position. 



Mr. W. R. Traviss exhibited a specimen of the very useful life- 

 slide described by Mr. Banham in the last number of The English 

 Mechanic, and also an adapter to enable fairly high-power 

 -objectives to be used with a Wenham binocular. The adapter 

 can only be used for such objectives as have the optical system 

 separable from the mount. The end-piece is unscrewed, and the 

 upper part is cut off and drilled out to carry the optical part, which 

 is put in from the top. Mr. Traviss said that a useful substitute 

 for the adapter could be made from the cork from a vinegar 

 bottle, or a strip of paper of suitable length wound round the 

 objective end, so that it might be pushed or screwed into the nose- 

 piece. 



The President then delivered his annual address, taking as his 

 subject " The Use of Microscopic Characters in the Systematic 

 ^tudy of the Higher Plants." 



