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PROCEEDINGS OF THE SOCIETY. 
The Conversazione was held at 20, Hanover Square, on Monday, the 
30tli November, 1891. 
The following objects, &c., were exhibited : — 
Mr. F. W. Andrew : — Megalotrocha albo-jlavicans. 
Rev. G. Bailey : — Foraminifera from the London Clay. 
Messrs. R. and J. Beck : — Amphipleura pellucida. Arachnodiscus 
Ehrenbergi. Polycystinse from Barbadoes. 
Mr. E. T. Browne : — Foraminifera from the Chalk Rock. 
Mr. F. Chapman: — New Hyaline Foraminifera from the Folkestone 
Gault : viz. Vitriweblina Sollasi sp. n., V. Isevis Sollas, Poly- 
morphina Orbignii var. cervicornis var. nov. 
Messrs. C. Lees Curties and E. M. Nelson : — Projection Microscope 
Exhibition. 
Monochromatic Light Apparatus. 
Mr. E. Dadswell : — Thickened node of Nitella translucens. 
Mr. J. E. Ingpen: — Volvox and BatracJiospermum preserved in saturated 
solution of common salt ; one year in bottle. 
Diatom Structure in Medium : — Bromide of Antimony, Bromide 
of Arsenic, 1 part each, and Piperine, 2 parts. 
Messrs. W. Johnson & Sons : — Anthrax in Lung. 
Filaria sanguinis Jiominis (Diurnal and Nocturnal). 
Students’ Microscopes with new Substage Adjustment. 
Mr. R. Macer : — Argulus foliaceus. Epistylis flavicans. Lophopus 
crystallinus. 
Mr. G. E. Mainland : — Transverse Section of Fertile Head of Equisetum 
arvense: Spores and Elaters in situ. 
Longitudinal Section of Pilia grandiflora : Reticulate and Pitted 
Cells. 
Mr. A. D. Michael : — Hoplophora carinata v. pulcherrima , a South 
European Mite. 
Mr. J. H. Mummery : — Photographs and Drawings illustrating the 
Absorption of the Tubercle and other Bacilli by Leucocytes. 
Photographs of Micro-organisms in Dental Caries. 
Mr. E. M. Nelson : — Navicula firma , showing a spiral tube at the end of 
the raphe. Under an Oil-immersion 1/12. 
Mr. C. J. Pound : — Phagocyte enclosing Tubercle Bacilli. 
Effusion from Dorsal Lymph-sac of the Frog. 
Messrs. Powell and Lealand : — Cherryfield Rhomboides in Balsam with a 
new 1/12 in. Apochromatic Homogeneous Immersion 1*4 N.A. 
Mr. C. Rousselet : — A Collection of Rotifers. 
Mr. G. Smith : — Micro-Transparencies and Rock Sections. 
Mr. W. T. Suffolk : — Starch from Potato Fruit. 1/4 in. with Polariscope. 
Mr. J. J. Yezey : — Section of Passion Flower. 
Messrs. W. Watson & Sons : — Pacinian Corpuscles in Mesentery of Cat. 
Bacillus mallei , Glanders. 
Life-history of Blight of Grape-vine, Phylloxera. 
Chlorophyll in Leaf of Moss, Mnium. 
Group of Diatomacese from Glingore, J utland. 
Pleurosigma Genus Slide, 100 Species. 
The Microscope Lamps were kindly lent by Mr. G. J. Smith. 
