(Contents. xxxi 



PAGE 



Blaoklock, A. W. — Critical Illumination (Fig. 25) 106 



Watson & 8oks' Revolving Microscope Tray (Fig. 26) 107 



iioHK, M. VON — The Biotar,a Projection System witli unusually large Aperture and 



Flat Field 233 



KoHLER, A. — Fluid Condensers of Large Aperture 234 



OxLET, A. E. — Arrangement for Circularly Polarized Light (Figa. y>2, 3ii) .. .. 234 

 Leitz Reflecting Condensers for Dark-ground Illumination and Ultra-microscopic 



Observations 235 



Zakkzewski. C. — Half-shadow Interferometer as Photometer 236 



KrCss Universal Arc Lamp, ivith Steady Light-source (Figs. 34-36) 236 



Gage, 11. P. — Radiant EJicie7icy of Arc Lamps 238 



Bibliography 238 



Studnicka, F. K. — Macro-projection by Use of the Micro-tcope 348 



Lehmann, H. — U V- Filter and U V-Filter-lamp as Aid" in Luminescence Analysis 



(Figs. 63-70) 348 



Nelson, E. ;\I. — Methods of Illumination (Fig. 71) 358 



I.EiSHMAN, W. li. — Correction of Errors of Refraction for Microscope Work (Fig. 79) 449 



RiES, T. — Simple Microscopic Place-fitider (Fig. 80) 450 



Bibliography 451 



Leitz — Apparatus for Drawing in Natural Sixes, or with Slight Magnification or 



Diminution ( Fig. 99) 5(j0 



Tammes, T. — Some Improvements in T. Tammes' Electric Microscopical Lamp . . 561 



jMetz. 0. — Leitz Step Micrometer with Simplified Micron Graduation (Fig. 100) .. 561 



'■ Ry&toh" Microscope Platform (Fig. 130) '. 659 



C. Baker's Miniature Arc Lamp (Fig. \?ji.) 659 



(4) Photomicrography. 



Wychgram, E. — Photomicrography in Natural Colours 108 



VlIs, F. — Cinematography of the Embryonic Developmeiit of the Sea-urchin .. .. -38 



Reid, D. J. — Axial Illumination in Photomicrography {Fig. 37) .. .. ■■ 239 

 Ernemann's Cinema Micro-apparatus for Production of Serial Pictures of Living 



Micro-organisms (Fig. 72) 356 



Rheinbebg, Julius — Miero-spect<a Method of Colour Photography (Figs. 81-85) .. 451 



Cookbtjrn, J. — Making of Photomicrographs 454 



Bowell, E. W. — Blue Screen .. ..' 562 



Watson, W. & Sons — Duplex Photo-Micrographic Camera (Fig. 10\) 562 



„ ,, „ Watson's''' Laboratory" Camera (Fig. 102) 562 



Wolff. M. — Observations and Contributions to the Practice of Scietdific Photo- 

 micrography and Maerophotography inclusive of Colour Photography with 



Autochrome Plates 661 



(5) Microscopical Optics and Manipulation. 



PULFRICH, C. — Stereoscopic Vision and Measurement lOS 



Lleopart. .J. M. Castellabnau y de — General Theory of tlie Microscopical Image 108 



Erfle, H.. & others — Theory of the Image-formation ill the Microscope 243 



Buocher, F. — Microscopical Work and Eye-accommodation 244 



Bibliography 245 



Gaubert, P. — Circular Polarization of Liquid Crystals 358 



Lleopart, J. M.,de Castellarnau y — General Theory of Image Formation in the 



Microscope 455 



Vles, F. — Optical Properties of Muscle 455 



BiFLL, L. — Optical Illusion observed when Blinking the Eyes 456 



Bifchitz, S. — Displacement of the Particles in the Brownian Movement. Phenomenon 



of the Borders 456 



Bibliography 564 



(6) Miscellaneous. 



Qubkett Microscopical Club 109 



Bibliography 109 



