M.
| Magnification | [13] |
| Mechanical Stages | [78] |
| Megascope | [91] |
| Micrometers | [73] |
| Micrometer Eye-piece | [73] |
| Micrometer with squares | [73] |
| Micrometer-screw | [18] |
| Microscope after Dölken | [52] |
| " " Nebelthau | [50] |
| " " Unna | [33] |
| " stereoscopic | [69] |
| " mineralogical | [57] |
| " for dissections | [62] |
| " for reading thermometer scales | [102] |
| " for the examination of trichinae | [48] |
| Microscopical Cases | [103] |
| Micro-Spectroscope | [70] |
| Microtomes | [92] |
| Microtome knives | [96] |
| Moist chamber | [100] |
N.
| Nansen's Microscope | [102] |
| Nebelthau's Microscope | [50] |
| Net micrometers | [73] |
| Nose-pieces | [100] |
| Notice | [4] |
O.
| Object Marker | [101] |
| Objectives achromatic | [12] |
| " apochromatic | [14] |
| " photographic | [85] |
| Ocular for Demonstrations | [101] |
| Oil-Immersion | [12], [14] |
| Opaque illuminator | [102] |
| Outfit for Sputum Examinations | [103] |
P.
| Photographic Objectives | [85] |
| Photographic plates | [82], [85] |
| Photomicrography | [82] |
| Photo-micrographic Apparatus | [82] |
| Photomicrographic Apparatus with joint for inclination | [83] |
| Pfeiffer dissecting microscope | [64] |
| Pipettes | [70] |
| Plate holders | [82], [85] |
| Pocket Microscope | [65] |
| Pocket Lens | [68] |
| Polarizing Apparatus | [99] |
| Preface | [6] |
| Projection | [87] |
| Projection Apparatus, large size | [91] |
| Projection Apparatus after Edinger | [84] |
| Projection-lamp | [90] |
| Projection-lens | [90] |
| Projection-ocular | [91] |
| Publications | [104] |
R.
| Reflector | [83] |
| Revolving Eye-piece | [15] |
| Rheostat | [90] |