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 =S.= Saccharimeter, Mitcherlich 102 Screw-micrometer eye-piece 73 Simple dissecting microscope, wood case, with handrests 66 Sliding Microscope (Nebelthau's) 50 Sliding Microtome 92, 95 Slide for counting the corpuscles of the blood 71 Spectroscope 70 Stage-Micrometer 73 Stage for Dissections 66 Stand for supporting specimens 83 Stand A 24 Stand I 28 Stereoscopic Binocular stand 69 Stand Ia 30 " Ia with English Foot 32 " Ib 34 " II 36 " IIa 38 " IIb 40 " III 42 " IV 44 " V 46 " VI 48