CONTENTS. XXV11 



MICROSCOPY. 

 A. Instruments, Accessories, etc. 



Cl? Stands. i"age 



Watson's Vulcan Metallurgical Microscope (Fig. 5) 70 



Winder's Special Metallurgical Microscope for Observing Structure of Metals under 



Strain (Fig. 6) 71 



Watson and Sons' Micrometer Microscope (Fig. 7) 72 



Leitz' Double Microscope (Fig. 8) 74 



Leitz' Stereoscopic Binocular Microscope for Metallurgical Purposes (Figs. 20, 21) 208 



Beck's (R. & J.) New Binocular Microscope (Figs. 22-26) 205 



Watson & Sons' No. 2 Metallurgical Microscope (Fig. 27) 210 



Old French Microscope by Joblot (Fig. 29) 297 



Emich, F. — Greenough Binocular Microscope 300 



I .ehmaNN, H. — Luminescence Microscope : its Construction and its Applications 300 



Ives, F. E. — Binocular Microscopes 488 



Watson & Sons— Watson-Conrady " Bicor " Binocular Attachment (Figs. 56. 57) . . 576 



,, Agricultural Microscope (Fig. 58) 579 



„ Grand Model Van Heurck Microscope (1914 Model) (Fig. 59) .. 579 



(2) Eye-pieces and Objectives. 



Zeiss' New Homogeneous Immersion 1/7 301 



Healy's Comparison Ocular 301 



Nelson, E. M. — Measurement of the Initial Magnifying Powers of Objectives 



(Fig. 34) " 394 



(3) Illuminating 1 and other Apparatus. 



Lowe, F. — Zeiss Pocket Iiefractometer for Mineralogists and Jewellers (Fig. 9) .. 75 



Watson-Conrady Condenser Vertical Illuminator (Fig. 10) 77 



Wychgram's New Low-current Microscopical Lamp 78 



Heath, C. E. — New Safety Device for High-power Lenses and Cover-glasses (Fig. 1 1) 78 



Freihekr, W. — New Epidiascope 79 



Huldsschinsky, K. — Simple Method for Obtaining Photomicrographs (Fig. 12) .. 79 

 Brandt, R. — Neio Electrical Heating Apparatus applicable to any Microscope 



(Fig. 30) 301 



Berek & Jentzsch's Small Intense-light Monochromator (Figs. 31, 32) 303 



Grundy, J. — Improved Form of Cheshire's Apertometer (Fig. 35) 396 



Cheshire, F. J. — Two Simple Apertometers for Dry Lenses (Figs. 36, 37) .. .. 398 



Ainslie, M. A.— Variation of Cheshire's Apertometer (Figs. 38, 39) 400 



Draper, B. Bt. — Dark-ground Illumination with the Greenough Binocular .. .. 402 



Akehurst, S. C. — Changer for Use with Substage Condensers (Figs. 40, 41) .. .. 40:! 



„ „ Substage Illumination 405 



Levy, F. — New Microscope Illuminators 405 



Zoth, A. — Application of Direct Coolers to Projection 405 



