( 4 ) 



SUMMAEY OF CUBEENT EkSEABCHES, (fec. — C<Jtltinued. 



FAGS 



DIastatic Ferment of Bacteria 883 



Microh;a of F.sh 88i 



Fermentation of Bread 885 



Cell-nucleus and Pores in the Walle of Phycochromacew 885 



Foml Algx 885 



Occurrence of Aphanizomenon Fhs-aquse in Ice 886 



Ovuliies, a Group of Dichoiomnus Siphonex 886 



New Type of Algas in Stigmaria-coal 887 



Parasitic Algri-lihe Plants in Bussian Coal 887 



Sphnroplea annulina 888 



Zoochorella 8S9 



Vohox Glflbator. Is it a Hollow Sj^lierei 889 



Sectons of Pinnularia (Figs. 155 and I5>j) 891 



Microscopy. 



Bfch's Pathological Microscope (Fig. 157) 894 



Ckev liter's Microscopes 896 



Swift and Son's Pocliet Microscope (Figa. 158 mi 159) 896 



Mirat'd's Eevdver Microscope (Fig. 1()0) 897 



J'eJIelan's'' Continental" Microscripe (Fig. IGl) 899 



Zeifs's Mineralogical Microscope (Fig. 1G2) 900 



Bausch and Lomh Optical Company's Fitting for Neutral-tint Camera 



Lucida (Fig. 163) 902 



Test.'raj the Bino'-ular Arrangement 902 



Baiifch and Lomh Optical (hmpuny's Safety Nose-piece (Fig. 164) .. ,. 903 



Matthews' Device for Exchanging Oljedites (Fig. 165) 903 



Watsons Adapter Nose-piere (Fig. 166) 904 



Boerher's MovahU Stage (Fig. 167) 904 



FoTs Compressor (Fig. 168) 905 



Slark's Tubular Lire-box (Fig. 169) 906 



Wenham's Reflex Illuminator 907 



Praitical Benefits conferred by the Microscope 907 



Bale's Eye-piece Micrometer 908 



A yl ward's Apparatus for Pond-Life Hunting 911 



Capturing and Breeding Insects, Acari, d:c., for Mounting 911 



Treatment of Pelagic Fish Eggs 912 



Jl'at^r-hnth and Moulds firr imbedding .. .. 913 



Fearnley's Modification of the Graces- Williams EtJier Freezing Microtome 



(Fig. 170) 913 



Improvements in the Thoma Microtome (Fig. "[71) 914 



Andres, Giesbrecltt, and Mayer's Section-stretcher (Fig. 172) 916 



Cutting Sections of Prohosces of Honey feeding hisects 917 



Staining Kith Bose Beugale, Iodine Green, and Bleu de Lyon 918 



Carmine Staining 918 



Stain for Freifh Tissues of Vertehrata 918 



Series Preparations 919 



Mounting Minute Insects and Arari in Balsam 920 



Collecting together Scales of Insects and other Minute Objects upon one place 



on d Slide 920 



Mounting Hydrozoa, Pohjzoa, &c., with extended Tentacles 921 



Mount ing Leaves of P inus 921 



Cleaning Diatoms 922 



Preparation of Fresh-wnter Alg% for the Herbarium 922 



Brmcn's Slide-box (Fig. 173) ' 923 



Cataloijuing, Lahelling, and Storing Preparations 924 



Examining Sp<tnges 928 



Exhibiting Volvoz and Amoeba 928 



Pbooeedings of the Society 933 



Inpex 941 



