( 4 ) 



Summaby or Cubbent Keseabohes. &c. — continued. 



PAGE 



Agaricini 825 



Development of Sclerotium of Peziza Scleroliorum 825 



Development of the Sporangia of the Phycomycetes .. .. 826 



Alternation of Generations in the Hypodermic 827 



'• Mai Nero" of the Vine .. .. 827 



Aubernage: a Disease of the Vine .. .. 827 



Parasites of the Saprolegniex , . 828 



Diastatic Ferment of Bacteria 829 



Bacteria of Intermittent Fever 830 



Bacterial Parasite of the Chinch Bug « .. 830 



Etiology of Distemper . . .. .. ,. 831 



Experimental Production of the Bacteria of Distemper .. .. 832 



Germs of Malaria .. 832 



Prevention of Fermentation by Vegetable Acids 833 



Fermentation of Maize-starch .. .. ... .. 833 



Fermentation of Nitrates .. 834 



Composition of Fucus amylaceus . . 834 



Mazsea, a new genus of Cryptophyceee 835 



Besting-spores of Conferva . . ... 836 



Diatoms of the Baltic .. ... .. 837 



Motion of Diatoms (Figs. 147-149) .. .. 837 



Symbiosis of Animals and Algse 840 



Vampyrella and its Allies .. 840 



Mioboscopy. 



Petrographical, Miner alogical, or Lithological Microscopes. — Rosenbusch, 



Fuess, Beck, Swift, &c. (Figs. 150-155) .. .. .. 842 



"Jumbo" Microscope { Fig. 156) 850 



" Midget" Microscope (Fig. 156) 852 



Beck's Histological Dissecting Microscope (Figs. 157 and 158) 852 



Gundlach , s Globe Lens 852 



Designation of Eye-pieces 853 



Objectives of small and large Aperture .. .. 853 



Correction-adjustment for Homogeneous-immersion Objectives 854 



Nelson's Adapter for Rapidly Changing Objectives (Fig. 159) 858 



Gundlach' '& Calotte Diaphragm (Fig. 160) .. .. .. .. 859 



Bohm's Wool-measurer (Fig. 161) 859 



Gundlach's Substage Refractor .. .. , 860 



Apparent Size of Magnified Objects . . . . 861 



Committee on Ruled Plates 861 



Quelcett Microscopical Club 861 



Hogg on the Microscope .. 862 



Wright's Experimental Optics .. .. 862 



Methods of Microscopical Research in use in the Zoological Station at 



Naples (Fig. 162) 866 



Andres' Methods of treating Actinia 881 



Flemming's further Method for Staining Nuclei .. , ^. 883 



Iodine-green and Methyl-green 883 



Preparation of Epidermis 883 



Unpressed Mounting 884 



Staining with Magdala-red 885 



Preparing Fossil Foraminifera, Spicules, &c. 886 



Preparation of Diatoms 887 



Mounting Sections in Series 888 



Eau de Javelle for removing the Soft Parts of Preparations , 889 



Gum and Glycerine for Imbedding 890 



Roy's Microtome (Figs. 163 and 164) 892 



Bo&cker' 's Microtome with Automatic Knife-Carrier (Figs. 165-107) .. .. 893 



Staining Bacillus tuberculosis .. 895 



Obituary 899 



Pboceedings op the Society 901 



