576 PROCEEDINaS OF THE SOCIETY. 



capable of dividing spaces as minutely and exactly as Hcrr Nobort's 

 macliiue ; but most, if not all, of them refused to rule lines at all 

 conijiarable to Nobeit's Avhen the closeness exceeded about 50,000 to 

 the inch, and this was, be believed, mainly, if not wholly, due to im- 

 lierfection in the diamond, or in the method of regulating its pressure 

 upon the surface to be ruled. 



Mr. Hardy exhibited a colonj'^ of VorticcUoi having the stalks 

 agglutinated in a bundle, and covered witli transparent gelatinous 

 matter. It was found erect on leaves in colonies of 50 to 100, some 

 more erect than others, and coming off the leaf freely. When loose, 

 they appear very like large ConocJiilus, but sink by the weight of stalk. 

 The body was campanulate and very slightly retractile. Height, 

 2-4 mm. 



Mr. Cheshire exhibited a remarkable slide showing conductive 

 nerve-threads escaped from the sheath of the ganglionic chain running 

 through the first three segments of the abdomen of Vespa vuhjaris. 



The following Instruments, Objects, &c., were exhibited:— 



Mr. Bolton: — Volvox glohator (male?). 



Mr. Cheshire:— Slide showing conductive nerve - threads from 

 Vespa vulgaris. 



Mr. Crisp : — Model of an old Italian Microscope. 



Mr. Dowdeswell : — Septic microbes from high altitudes. 



Mr. Hardy : — Colony of Vorticellce. 



Mr. Madan : — Bertrand's polarizing prism, and modification of 

 Ahrens's prism. 



Mr. J. Mayall, jun. : — Diamonds belonging to Nobert's ruling 

 machine. 



Mr. Michael : — Slides of Oribatidae in illustration of his paper. 



Mr. H. Mills: — Six slides of Sfephanodiscus Niagaroe. 



New Fellows : — The following were elected Ordinary Fellows : — 

 Messrs. McLaughlin Berens, P. H. Emerson, G. M. Giles, M.B., 

 George Norman, Thomas Pray, jun., E. A. Schultze, Edward 

 Wethered, James E. Whitney, and W. G. de Witt, Eev. E. A. Hutton, 

 B.A., and Mrs. Earquharson. 



Meeting of 13th May, 1885, at King's College, Strand, W.C, 

 THE President (the Eev. Dr. Dallinger, F.E.S.) in the 

 Chair. 



The Minutes of the Meeting of 4th April last were read and 

 confirmed, and were signed by the President. 



Mr. Beck exhibited the " Star " Microscope (in two forms) which 

 his firm had recently brought out with a view to supply a want which 

 had been felt for an instrument which should be at the same time 



