XXX 
CONTENTS. 
PAGE 
American Type Microscope (Fig. 79) 831 
Sayre’s Pocket Dissecting Microscope (Figs. 80 and 81) 334 
Bausch & Lomb’s Attachable Mechanical Stage (Figs. 82 and 83) 334 
Powell’s Iron Microscope (Fig. 84) 336 
Bibliography 337 
Reichert’s New Polarising Microscope (Fig. 97) 432 
„ “ Austria ” Microscope (Fig. 98) 432 
„ New Pocket Microscope (Fig. 99) 432 
„ Polarising Hand Microscope (Fig. 100) 432 
Leitz — Eternod's New Large Model Mechanical Stage (Fig. 101) 434 
Etehnod — Adaptation of Greenough’s Binocular to the Ordinary Microscope .. . . 435 
Reichert’s New Coarse Adjustment (Fig. 102) 435 
The Compass Microscope (Figs. 125-129) 529 
Adams’ Compendious Pocket Microscope (Fig. 130) 532 
“ M .” — Fine Adjustment of the Microscope 535 
Flint’s Class Microscopes (Figs. 131-134) 537 
Bibliography 541 
Three Small Hand-Microscopes (Fig. 149) 643 
Reichert’s New Microscope (Fig. 150) 644 
Baker’s D.P.H. Microscope No. 1 (Fig. 151) 646 
Reichert‘s Cheap N on-inclinable Stand (Fig. 152) 647 
Nelson’s Stepped Rackwork ( Coarse Adjustment) (Fig. 153) 648 
Forgan, R . — Method of Enlarging and Deepening the Field of a Compound Micro- 
scope 648 
Berger’s New Microscope 649 
Watson & Sons’ “School” Microscope (Fig. 154) 649 
Bibliography 649 
(2) Eye-pieces and Objectives. 
Harting, H . — Formulx for Small- Apertured Objectives 84 
Schroeder, Hugo — Centering of Lenses 88 
Ross, Andrew — Primitive Form of Lens-correction (Fig. 103) 436 
Keeley, F. J . — Effect of Cover-glass Thickness on the Performance of Wide Aperture 
Dry Objectives .< 437 
Collins, F. Howard — Nomenclature of Objectives 437 
Bibliography 438 
Watson & Sons’ “ Holoscopic ” Eye-pieces (Fig. 155) 651 
Bibliography 651 
(3) Illuminating- and other Apparatus. 
Behrens’ New Projection Apparatus (Figs. 10-14) 89 
Abbe Camera Lucida (Fig. 15) 93 
Nagel, Wilibald A . — Monochromatic Light 94 
Hartnack’s Embryograph (Fig. 56) . . . 223 
Hammarberg’s Object Net Micrometer 224 
Reichert’s New Form of Drawing Apparatus (Fig. 57) 225 
Curties, C. L. — Direct- Vision Spectroscope (Fig. 85) 337 
Davis’ New Ebonite Reversible Compressor (Fig. 86) 337 
Beck's Achromatic Condenser (Figs. 87 and 88) . . . . 338 
,, New Triple Nose-piece (Fig. 89) 339 
Gebhardt — The Rational XJse of Dark-Ground Illumination 339 • 
Bibliography 340 
Reichert’s Electrically Heated Stage (Figs. 104 and 105) . 438 
Watson’s Dust-proof Triple Nose-piece (Fig. 106) 440 
„ Table- Stage (Fig. 107) 440 
Kohler’s Apparatus for Uniform Illumination (Figs. 135 and 136) 541 
Bibliography 543 
Behrens — Notes on Optical Projection (Figs. 156-158) .. .. 651 
(4) Photomicrography. 
Nedha8s’ Lehrbucli der Mikrophotographie 94 
Gebhardt’s Culture Dish-holder for Microscopic and Photomicrographic Purposes 
(Fig. 58) ' 
225 
