CONTENTS. 
XXXI 
PAGE 
Weinschenk, E . — Method for the exact Adjustment of the Nicol Prisms 463 
Nelson, E. M.— Optical Pule 464 
Pulfrich Refractometer (Figs. 76-80) 464 
Klein, 0 . — Universal Apparatus for the Investigation of Thin Slices in Liquids 
(Figs. 81 and 82) 467 
Melntkow-Raswedenkow, M . — Regulating d’Arsonvdl’s Thermostat 468 
New Thermometer for Regulating the Temperature of Paraffin Baths, Ac 562 
Betting, C . — New Rotating Disc for the Preparation of Lacquer Rings (Fig. 88) 562 
Box for Colouring-Reagents 563 
Simple Thermosiat for Microscopes of Different Construction 563 
Karawaiew, W . — New Thermostat heated without the use of Gas (Figs. 95-99) .. 674 
Heidenhain, M. — Object-holder of Aluminium for Observation of Objects on both 
sides (Fig. 100) 677 
Wessel, D. C . — New Cover-Glass Clip 678 
Kaiser, O . — Simple Arrangement for Draicin'g Microscopic Preparations under very 
low Magnifications Fig. 101) 678 
Siddons, H. G. F . — New Form of Dissecting-Stand and Lens-Carrier (Fig. 102) .. 679 
(4) Photomicrography. 
Walmsley, W. H . — Some New Points in Photomicrography 126 
Marktanner-'L'urneretscher, G . — Advances in Photomicrography 126 
Hunter, J — New Method of Illumination for Photomicrography 248 
Forgan, W . — Method of Photographing Large Microscopic Sections 249 
Heurck, H. van — Acetylene and Photomicrography (Fig. 67) 353 
Fox, C. F. — Walmsley s “ Autograph ” Camera, and Walmsley, Fu J ler, & Co.’s 
Acetylene Gas Generator 354 
Leaming, E . — Photographic Technique of Wilson’s Atlas 468 
Goedicke, J . — Optical Works of C. P. Goerz in Schoneberg, Berlin 563 
Borden, W. C — Practical Photomicrography 563 
Czaplewski, E . — New Photomicrographic Apparatus 680 
(5) Microscopical Optics and Manipulation. 
Stokes. A. C. — Collar-Adjustment of the Objective as affected by a Change of Eye- 
pieces 127 
Czapski — Rheinberg's Colour Contrast Method 369 
Rheinberg, G . — On an Addition to the Methods of Microscopical Research by a New 
Way of Optically Producing Colour- Contrast between an Object and its Back- 
ground, or between Definite Parts of the Object itself 373 
Ambronn, H . — Appearances of Colour on the Boundaries of Colourless Objects under 
the. Microscope (Fig. S3) 468 
Nelson, E. M . — Tests for Microscope Objectives 681 
Rayleigh — On the Theory of Optical Images with special reference to the Microscope 
(6) Miscellaneous. 
Modern Microscopy 127 
Ferenczy, Max — Optics and Mechanics at the North German Commercial and 
Industrial Exhibition at Lvbeck, 1895 127 
Nelson, E. M. — Stanley’ s Optical Rule 135 
Dolley, C. S . — The Planktonikrit , a Centrifugal Apparatus for the Volumetric 
Estimation of the Food Supply of Oysters and other Aquatic Animals .. .. 470 
Kuhlman, C. G. — The Microscope as a Gwde in Medicine 470 
White, M. O . — Red Blood- Corpuscles in Legal Medicine 471 
History of the Microscope 471 
The late Mr. Slack 472 
Cunningham, K. M. — Arc- Light Dust as an effective Abrasive Material 564 
Davis, E. — Presidential Address 564 
Brauns, R . — Microchemical Reaction for Nitric Acid 687 
Behrens, H . — Sublimation and the Determination of Melting-points in Micro- 
chemical Investigations (Fig. 107) 687 
The late Mr. F. C. S. Roper 688 
