258 



INDEX. 



Oblique illumination, 34 

 Ocular micrometer, 38 

 Opaque injections, 65 



objects, 77 

 Opticians, list of, 27 

 Orbitolites, 159 

 'Organs of touch, 218 



of taste, 218 



of smell, 218 



of sight, 219 



of bearing, 222 

 Origin of rocks, 92 

 Organic principles, 184 

 Oolites, 90 

 Otoliths, 222 

 Oscillatoriae, 151 

 Oxalate of lime, 241 



Pabulum, 118, 183 

 Paleontology, 97 

 Palmellaceffi, 139 

 Parasites, human, 242 

 Parthenogenesis, 126 

 Pathology, microscope in, 226 

 Pathological formations, 232 

 Parabolic illuminator, 36 



speculum, 37 

 Pettenkofer's test, 102 

 Penetration. 55 

 Periscopic eye-piece, 26 

 Preserving objects, 76 

 Pleurosigma test, 58 

 Pigott's, Dr. R.. eye-piece, 26 

 Pigmentation, 229 

 Phosphates, 240 

 Physical movements, 53 

 Photography, microscopic, 48 

 Phenomena of cells, 120 

 Polariscope, 42, 99 



in mineralogy, 90 

 Polycystina, 95, 160 

 Polymorphism, 136 

 Polyps, 164 

 Polyzoa, 168 

 Popular microscopes, 30 

 Porifera, 160 

 Preparation, 58 



by teasing, 61 



by section, 61 



of minerals. 84 



of crystals/85, 99 



in viscid media, 65 



of vegetables, 156 



embryonic, 204 

 Preservative fluids, 73 

 Preserving objects, 76 

 Primordial utricle, 129 

 Protoplasm, 118 

 Progressive force, 130 

 Prothallium of ferns, 126 

 Prism for oblique light, 35 



Protophytes, 129 

 Protozoa, 158 

 Pus, 189 



Raphides, 132 



Reade's condenser, 34 



Recklinghausen's moist-chamber, 41 



Red blood-corpuscles, 186 



Reproduction, 125 



Resolution, 55 



Resin, 133 



Reticulated vessels, 131 



Respiratory organs, 213 



Retina, 221 



Rhodospermeae, 153 



Rhizopods, 158 



Rotatoria, 163 



Sarcode, 118 

 Salivary glands, 209 



corpuscles, 189 

 Schleiden and Schwann, 118 

 Sclerogen, 130 

 Schultze's warm stage, 42 

 Scales of Lepidoptera, 175 

 Section-cutter, 63 

 Secretory organs, 208 

 Sections of hard tissues, 62 

 Sensory organs, 218 

 Selenite stage, 44 

 Seeds, 157 



Shadbolt's turntable, 78 

 Shell structure, 170 

 Silica in plants, 131 

 Simple tissues, 186 

 Soemmering's steel disk, 40 

 Spectra of substances, 102 

 Sperm-cell, 125 

 Spectrum analysis, 101 

 Spiral movements, 130 



vessels, 131 

 Spot lens, 36 

 Sphagnum. 155 

 Spherical aberration, 22 

 Sphaeroplea, 152 

 Sponges, 160 



Spontaneous generation, 125 

 Stage micrometer, 38 

 Staining cells, 122 



tissues, 63 



fluids, 69 

 Starch, 132 

 Stems of plants, 156 

 Still cells, 140 

 Students' microscopes, 28 

 Strieker's gas chamber, 41 

 Sublimation, 99 

 Surirella gemma, 56 

 Stomata, 157 

 Sputa, 243 



