XXXY1 
CONTENTS. 
Edwards, A. M . — Bod Illuminator •• 
Reichert Illuminating Apparatus (Figs. 41 and 42) 
,, Movable Object-Stage (Fig. 43) 
Salomons, Sir David — Optical Projection 
Kurtschinski, W. P. — Electrical Thermostat (Fig. 44) 
Heydenreich’s Regulator and Remarks on Thermostats (Fig. 45) 
Rdusselet’s New Compressorium (Fig. 46) 
Koch, A. — Air-pump* for Microscopical Purposes (Fig. 47) 
Bate, G. P. — White Ground Illumination 
Maddox, R. L. — Rod Illuminator 
Leitz — New Form of Camera Lucida 
Griffiths, E. H. — Three new Accessories for the Microscope (Figs. 65-68) 
Rogers, W. A. — Filar Micrometers 
Reichert’s New Heating Apparatus (Fig. 69) 
„ New Cover-glass Measurer (Fig. 70) 
Sir David Salomons’ Electric Lantern (Figs. 71 and 72) 
Behrens, W. — WinkeVs Movable Object-stage (Fig. 97) 
Rogers — Value of Artificial Sources of Light 
Macer’s (R.) Reversible Compressorium (Fig. 98) 
Ambronn, H. — Application of Polarized Light to Histological Investiga- 
tions 
Preston, W. N. — Practical Drying Oven (Fig. 107) 
Boettcher, F. L. J. — Slide Carriage and Object-finder (Fig. 108) .. 
Bernhard, W. — Desk for Microscopical Drawing (Fig. 109) 
Piffard, H. G. — Improved Means of Obtaining Critical Illumination for 
the Microscope: Piffard’ s Electric Lamp (Fig. 110) 
Preston, W. N. — New Mounting Table (Fig. Ill) 
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(4) Photomicrography. 
Nachet’s Camera (Fig. 7) 
„ large Photomicrographic Apparatus (Fig. 14) 
Bousfield’s Photomicrography 
Smith, T. F . — Podura Scale 
Fabre-Domergue — Photomicrography and direct positive Enlargements 
(Fig. 29).. .. .. 
Smith, T. F . — Monochromatic Yellow Light in Photomicrography .. 
Piffard, H. G. — Monochromatic Yellow Light in Photomicrography 
Izarn — Photography of Gratings and Micrometers engraved on Glass 
Barker, D. W. — Camera for Microphotography (Fig. 48) 
Deck, Lyman S. — New Heliostat (Fig. 73) 
Sternberg, G. M . — Photomicrographs by Gas-light (Fig. 74) 
Reichert’s New Photomicrograpliic Apparatus (Figs. 75-77) 
Zeiss, Carl — Apparatus for the Projection of Microscopic Images (Figs. 
99-101) 
Pringle’s (A.) Vertical Photomicrographic Apparatus (Fig. 102) . . 
Kent, A. F. Stanley — Practical Photomicrography 
Atkinson, G. F . — Photography as an Instrument for recording the Macro- 
scopic Characters of Micro-organisms in Artificial Cultures .. 
Piffard, H. G . — A suggested Improvement in the Correction of Lenses for 
Photomicrography (Figs. 112 and 113) 
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