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Mr. D.W.Greennough, proposed by Mr. A. Smith, seconded by Mr. Priest. 

 Mr. W. J. Sco field ,, Mr. Emery „ Mr Eeed. 



Mr. E. M. Nelson „ Mr. Newton „ Mr. Groves. 



The Secretary announced that the names of these candidates would be 

 placed on the ballot paper in the order determined by lot by the President as 

 provided by the rules, and not alphabetically. 



The President announced that the Committee had appointed Mr. Hain- 

 worth as Auditor on their behalf, and he requested the members to nominate 

 a second on behalf of the Club. 



Mr. Dobson was proposed as Auditor on behalf of the Club by Mr. Oxley, 

 seconded by Mr. Jaques, and elected nem. con, 



Mr. Nelson exhibited and described a new objective, constructed by Messrs. 

 Powell and Lealand. He had been much engaged in examining various 

 minute organisms, such as Bacteria, which he had treated as diatoms or 

 other test objects, and resolved them, as it were. It would be very important 

 if morphological distinctions could be made out in these organisms, and 

 certain Bacteria or Micrococci could be identified with a particular disease. 

 The lens he was using was one of Messrs. Powell and Lealands l-25th wide 

 angle-glasses with two fronts. In using it he was greatly struck with the 

 increase of working distance on reducing the aperture. With an aperture of 

 1*40 the objective worked through tolerably thick cover glass ; with an aper- 

 ture of 1*14 it would work through a test diatom slip easily, so that the slide 

 could be reversed, and the object viewed from the back. The l-25th objec- 

 tive of 120° balsam angle worked through glass -006 easily. When using 

 Moller's type slide, which had a rather thick cover, the definition was re- 

 markably fine. It resolved Ampliiplenra pellucida with direct central light 

 through an achromatic condenser, without slot or stop. He remarked that 

 if the aperture were over 1"25 the difficulty of making the objective was 

 enormously increased. The front lens, as at present constructed, was more 

 than a hemisphere ; it was skilfully fixed to a piece of thin glass '003 in 

 thickness, and they all knew the difficulty of handling such delicate glass 

 without breaking it. Messrs. Powell, however, cemented the front lens of 

 their new objective to a piece of this glass, which was then fitted to the 

 objective. Mr. Nelson then described an adaptation of the fine adjustment 

 to the substage. In working with high powers he found it very necessary to 

 get an exact adjustment of the condenser, and this was extremely difficult 

 with the ordinary coarse adjustment. In one instance he was endeavouring 

 to show bovine tubercle in a large cell. It was a very thick section, and the 

 object to be shown was extremely minute. He had thoroughly examined the 

 object at home, but when he got to the meeting it took him a quarter of an 

 hour before he could hit off the exact focus with the coarse adjustment. If 

 the object was the smallest degree within or outside the focus of the con- 

 denser it instantly disappeared. The fine adjustment was also useful as a 

 protection in using the condenser with thin .slips. It was just as dangerous 

 to rack up the condenser as it w r as to screw down the objective. The fine 

 adjustment consisted of a cone at the end of a screw ; when the screw was 

 turned in, the cone pushed up the substage, which was pressed down by a 

 spring. On withdrawing the cone, the spring pushed the substage down. 



