( 4 ) 



SuMMAET OF CuEEKNT Eesearohes, &c. — Continued. 



New CyanopTiycea 694 



Organic Bodies in fhe Thermal Waters of (he Pyrenees 694 



Fossil Confervites 694 



Cell-division in Closferium 695 



Sections of Diatoms 695 



MiCEOSCOPY. 



Bailey's Portable Microscope (Figs. 120 md 121) 697 



ChevaZlier's Inclining Microscope (large model) (Figs. 122-125) .. .. 698 



Hirschwald's Microscope-Goniometer (Figs. 126 a,nd 127) 700 



PlossVs Large Stand (Fig. 128) 703 



Swift and Son's Badial Inclining Microscope (Figs. 129 and 130) .. .. 704 



Projecting Lanterns 706 



^ss2/Wa7i Lejis (Figs. 131 andl32) 707 



Lindsay's Microscope (Fig3. 133 and 13 i) 708 



Janssen s Microscope (Fig. 135) .. .. , 708 



*' Contrihuiion to the History of the Compound Microscope " (Figs. 136 , 



and 137) 709 



Standard Eye-pieces 711 



Grunow's Camera Lucida .. .. 713 



Standard Body-tube for Microscopes 713 



Sliding Body-tubes 713 



McCalla's Nose-piece 713 



Smith's Rotating Stage 713 



Bausch and Lomb Optical Go's Compressors (Figs. 138 and 139) .. .. 714 



Frog-plate (Fig. 1^0) 715 



Apparatus for Examining the Circulation in the Lung and Mesentery of the 



Frog (Figs. Ul-Ul) 715 



Madan's Modification of Darher's Selenite Holder (Figs. Ii8-150) .. .. 718 



Sternberg's ' Photomicrographs and how to make them ' 720 



Photomicrography by Lamplight .. .. 721 



Focusing the Image in Photomicrography 722 



Collecting, Cultivating, and Displaying Microscopic Aquatic Life .. .. 727 



Collecting and Preparing Infusoria 729 



Potassic Iodide for Preserving Infusoria 730 



Preparing Insects and Spiders 730 



Fluid for Preserving Delicate Crustacea and Codenterates 732 



Hertwigs' Macerating Fluid .. 732 



Blue Stain 733 



Belong' s Microtome (Fig. 151) 733 



Cutting Sections of Hairs 734 



Fixing Sections 735 



Fixing and Staining Sections on the Slide 736 



Freeing Objects from Air 736 



Making Cells of Thin Glass 737 



Dry Mounting 737 



Glycerine Mounting 739 



Mounting Objects '' Opaque" in Balsam 740 



Styrax and Liquidambar as Substitutes for Canada Balsam .. ., ,. 741 



Practical Processes in Vegetable Histology 741 



Rapid Method of Demonstrating the Tubercle Bacillus without the use of 



Nitric Acid .. .. 764 



Grinding down a Slice of a Calcareous Fossil for Microscopical Ex- 

 amination 765 



Verification of Microscopical Observation 766 



Examination of the Corpuscles held in Suspension in Water , 772 





