7 
(4) Photomicrography. page 
Zeiss, Carl — Apparatus for the Projection of Microscopic Images (Figs. 99-101) .. 692 
Pringle’s (A.) Vertical Photomicrographic Apparatus (Fig. 102) 695 
Kent, A. F. Stanley — Practical Photomicrography 695 
(5) Microscopical Optics and Manipulation. 
Ambronn, H . — New Method for the Determination of the Refractive Indices of 
Anisotropic Microscopic Objects 697 
Klein, C . — On Work with a Polarization Microscope and a Simple Method for the 
Determination of the Sign of the Double-refraction 698 
(6) Miscellaneous. 
Progress in Microscopy 698 
Tolman, H. L . — Microscopy at the Columbian Exhibition 699 
Brook, G., f.r.m.s.. The late 701 
Weir, W. W . — The Microscope in Public Schools 701 
(3. Technique. 
Cl) Collecting Objects, including Culture Processes. 
Dall, W. H . — Collecting Mollusca 702 
Riley, C. V . — Collecting and Preserving Insects 702 
Klein, E . — Examining for Influenza Bacilli 702 
Miller, W. D . — Method of Examining Saliva for Pathogenic Organisms .. .. 703 
Roux, E., & L. Vaillard — Preparing the Antitoxic Serum of Tetanus 703 
Wortmann, J . — Concentrated Must as a Nutrient Material for Fungi 704 
Miquel, P . — Sterilizing Power of Porcelain Filters 704 
Beyerinck, W . — Cultivating Lower Algx in Nutrient Gelatin 704 
Bibliography 704 
(2) Preparing Objects. 
Janssens, F . — Mode of Studying Gills of Lamellibranchs 705 
Hickson, S. J . — Preparation of Early Stages of Distichopora violacea 705 
Ruffer, M. A., & H. J. Plimmer — Examination of Protozoa in Cancerous Tumours 705 
Taylor, T. — Freezing Attachment to Microscopes (Fig. 103) 706 
(3) Cutting, including Imbedding and Microtomes. 
Moll, J. W. — Reinhold- Giltay Microtome (Figs. 104-106) 706 
(4) Staining and Injecting. 
Spohn, G . — Nature of the Staining Process 711 
Roulet, C . — New Process of Double-staining Vegetable Membranes 711 
Waldner, M . — Staining living Sex-cells 711 
Laver an, A . — Demonstrating Malaria Parasites 711 
Everard, C., & others — Preparing and Staining Blood-films for Examination 
of Leucocytes 712 
Ramon y Cajal, S . — Mode of Investigating Retina of Vertebrates 712 
(5) Mounting, including Slides, Preservative Fluids, &c. 
Edwards, A. M . — Gum Thus 713 
Weaver, A. P . — Pneumatic Bubble-remover 713 
Mann, G . — New Fixing Fluid for Animal Tissues 714 
(6) Miscellaneous. 
Noll, F . — Apparatus for Observing Movements in Plants 714 
Jentys, St . — Determination of Diastase in Leaves and Stems 714 
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