2002 PROCEEDINGS OF THE SOCIETY. 



Mr. J. D. Hardy:— Collecting bottle. 



Mr. J. Mayall, jun. :— (1) Swift Microscope with triple " stepped- 

 rack;"'(2) Swift's patent fine adjustment; (3) Amfhipleura jpellucida 

 coated with silver. 



New Fellow: — Mr. George Thomas Bettany was elected an 

 Ordinary Fellow of the Society. 



Meeting of 12th November, 1884, at King's College, Steand, W.C, 

 THE Peesident (the Eev. W. H. Dallingee, F.R.S.) in the 

 Chair. 

 The Minutes of the meeting of 8th October last were read and 



confirmed, and were signed by the President. 



The List of Donations (exclusive of exchanges and reprints) re- 

 ceived since the last meeting was submitted, and the thanks of the 

 Society given to the donors. 



Photo-portrait of the late F, A. Nobert, with his ruhng 



machine, enlarged by Mr. J. Mayall, jun Mr. J. Mayall, jun. 



Mr. J. Mayall, jun., said that at the last meeting he had called 

 attention to a triple " stepped-rack " fitted to a Microscope which he 

 then exhibited. It had since been found that this arrangement was 

 rather difficult to fit with sufficient accuracy, so that a new form with 

 a double rack had been substituted. This was found to have the 

 required smoothness of motion (see p. 958). The Swift Microscope, 

 which he exhibited thus fitted, had also a modified form of the Wale's 

 inclining limb by which Mr. Swift was able to secure the complete 

 rotation of an ordinary form of mechanical stage, which had been 

 seldom obtained in combination with the " Jackson " form of stand. A 

 polarizing prism, made after the formula of Dr. Bertrand, as described 

 supra, p. 965, was applied to the MicroscoiDe. He also exhibited 

 an unmounted prism made upon the same plan, showing the pecu- 

 liarity of its construction, by which a field of about 44° was obtained. 



Mr. Crisp exhibited and described Fasoldt's nose-piece {supra, 

 p. 959). 



Prof. Bell said that he had placed on the table for exhibition a 

 cluster of branched Vorticellce, which had been sent by Mr. Bolton in 

 the hope that some Fellow of the Society might be able to name 

 them. They were not mentioned in Kent's Infusoria. 



Dr. Maddox exhibited one of Miquel's culture slides, described 

 ante, p. 815. He also referred to Dr. Miquel's method of propagating 

 bacilli by the use of sterilized gelatinized paper, some of which he 

 exhibited. If it was desired to obtain these organisms from the 



