930 PKOCEEDINaS OP THE SOCIETY, 



Dr. Maddox : 



Three pierced culture cells. 



Specimens of coloured lichenized nutritive paper exposed for 



Bacteria, &c., and unexposed. 

 Two Photographs of apparatus used at the Observatory of Mont- 



sourisj Paris, in Bacteriology. 

 Eough diagram of Dr. Miquel's Udo-bacteriemetre for rain 

 analysis. 

 Dr. Van Heurck : 



Photomicrographs of A. LindJieimeri x 3000. 

 A. pellucida X 2850 and 7000, showing " beaded " or alveolar 

 structure. The photomicrographs produced with Powell and 

 Lealand's 1/8 in. of 1'47 N.A., and their vertical illuminator, 

 the preparation being one of the silvered slides of Dr. A. Y. 

 Moore intended specially for use with the vertical illuminator. 

 Mr. J. Mayall, jun. : 



A modification of Wenham's single plate mechanical stage, by 

 which the plate is suppressed and the slide lies on the rotating 

 stage bed. 

 Mr. Michael : 



Plumularia setacea with extended tentacles as in nature (slightly 

 stained.) 

 Mr. E. M. Nelson : 



Ampliipleura pellucida in Prof. H. L. Smith's medium, ref. ind. 

 2-4 X 2400 with Powell and Lealand's 1/12 1-43 N.A., illu- 

 minated with oblique light with Powell and Lealand's truncated 

 condenser 1 • 4 N. A. 

 " Comma " bacillus (Dr. Koch) x 2500 with Powell and Lealand's 

 1/25 1-88 N.A. 

 Messrs. Powell and Lealand : 



Section of Triceratium favus prepared by Dr. J. H. L. Flogel 

 X 800 with 1/16 oil-immersion. 

 Mr. B. W. Priest : 



Haliphysema. 

 Mr. T. B. Eosseter : 



Stephanoceros eicTihornii and other Infusoria. 

 Mr. G. J. Smith : 



Limestone with shells, from Headon Beds, Christchurch Bay, 

 Hants. Quartz Diatase from Freiburg, with polarized light. 

 Mr. James Smith : 



Pleurosigma elongatum x 1200 with 1/16 immersion. 

 Messrs. Swift and Son : 



Photograph of Blow-fly's Tongue taken with their new 1 in. 

 objective. 

 Mr. Eidley : 



' Challenger ' Deep - sea Sponges — Specimens of Esperia and 

 Tedania showing canal-system and histological elements. 

 Mr. Amos Topping : 



Transverse section of head of Lamprey (stained). 



