CONTENTS. XXXV 



PAOB 



Ignatowsky, W. v. — Illuminating Arrangement for the Metal- Microscope (Fi^s 



77, 78) I °. 515 



Siedentopf, H. — Microscopical Observations with I) 'n-k- ground Illumination 'Figs. 



79-81) 517 



Scheffer, W. — Work vrith the Paraboloid Condenser 518 



Hensoldt & Sons' Neio Angle Prisms for 90 . ISO , 45°, owl Roof-prism (Fi°-s. 



82-8.=.) " 518 



Imboden, W .— Simple Drawing awl Projection Apparatus (Figs. 86, 87) .. .. 518 

 Reichert's Reflecting Condensers for Dark-ground Illumination, and some Auxili- 

 aries (Figs 98-105) 636 



Berget, A. — Divergent Microscopical, Amplifier (Fig. 106) .. 041 



Lord Rayleigh — Apparatus for Measurements of the Defining Power of Objectives 641 



Meyer's Search-stage ii. (Perquirator) (Figs. 107, 108) 642 



Poschl, V.— New Method of Measuring Hardness (Fig. 109) 644 



Swift & Sons' Stage Goniometer (Fig. 110) 646 



Watson's New Eolos Immersion Paraboloid (Fig. Ill) 647 



Boeke, H. E. — Arrangement for Microscopical Observations at Extreme Tempera- 

 tures (Fig. 120) .. ' 768 



Lehmanx, Dr. H. — Eighly lleflecting Lantern Screens for Aidoehrome and other 



Projections 769 



Koristka's Paraboloid Condenser (Fig. 121) 770 



Koristka's Projection Apparatus for Liquid (Fig. 122) 771 



(43 Photomicrography. 



Calmers. H., & L. P. Clerc — Contribution to the Theory of the Photographic Web 252 



Makktanner-Tirneretscher. G. — Advances in Photomicrography and, Projection 253 



Bibliography 253 



Siedentopf, H. — Resolution of Edges in Microscopical Images (Fig. 88) .. .. 520 

 Heusner, H. L. — Simple Stand for Photography of Macro- and Microscopic Objects 



(Fig. 89) ' 521 



Jullien, J. — Economic Monochromatic Filters 522 



Ries, J. — Kinematography of Fertilisation and Cell-division (Fig. 90) 522 



Jullien, J. — Practical Photomicrography 523 



Bibliography 524 



Fournier, E. E. — Photography by Reflection under Contact 647 



Chevroton, L. — Chronophotomicrography 648 



Scheffer, W. — Mirror-reflex Camera for Photomicrography (Fig. 112) 648 



Bagshaw, W. — Elementary Photomicrography 772 



(5) Microscopical Optics and Manipulation. 



J. D. — Microscopic Measurements 100 



Perkin, J., & E. E. Fournier — Brownian Movements 253 



Lord Rayleigh — Aberration of Sloped Lenses, and their Adaptation to Telescopes 



of unequal Magnifying Power in Perpendicular Directions . 254 



Evans, J. W. — The Optical Examination of a Crystal Section in a Rock Slice .. 271 



Bibliography 523 



Nelson, E. M. — On the Measurement of Very Minute Microscopical Objects .. .. 549 

 (Jlerici, B.— Simple Arrangement for Determining Microscopically the Index of 



Refraction •■ 649 



Bibliography •• •• 64'.» 



Keelet, F. J. — Microscopical Image Formation 772 



Perrin, J., & Dabrowski — Bmwnian Movement and Molecular Constants .. .. 7/4 



(6) Miscellaneous. 



100 



Gage's Microscopy 



Powell, C— Cholesterol, Fluid Crystals, and Myelin Forms '" 



White, C. Powell — Crystals in Tumours j"J 



Smith. J. I.orrain, & (J. Powell White— Crystals in Fat-cells 



Quekett Microscopical Club 



Rules for the Sections and Sectional Meetings 



