348 



INDEX 



Abbe 54-58 



Achromatic 49, 50, 229 



Apochromatic 50 



Bull's eye 60, 224 



Centering 50, 54 



Illuminating cone 52 



Mirrorwith 55 



Non-achromatic 55 



Numerical aperture 52 



Optic axis 50, 54 



Photo-micrography 224, 229 



Standard size 30, 55 



Substage „ 49 



See also illuminator. 



Condensing lens 40 



Cone, aplanatic 54 



illuminating 52 



Congo-glycerin 275 



Red 275 



Conjugate foci 4 



Construction of images, geometri- 

 cal 5 



Continuous, spectrum 158 



Contoured, doubly 107 



Converging lens 3 



Lens system 11 



Convex lenses . 3-6 



Correction, chromatic, or color 



4, 15. 185 



Cover-glass 65, 66 



Over and under correction 15 



Cotton, collodion, gun or soluble. 274 



Counterstaining 3 IO_ 3i7 



Cover-glass, or covering glass 248 



Aberration by 64 



Adjustment, specific directions 65 

 Adjustment for, in photo-micro- 

 graphy 235 



Adjustment and tube-length 



16, 17, 65 



Anchoring 255 



Cleaning 248-249 



Correction. 64,65 



Effect on rays from object__2i, 65 



Gauges : 249-250 



Measurer 249, 250 



Measuring thickness of 249 



Non-adjustable objectives, table 



of thickness 18 



No. 1, variation of thickness 250 



Putting on 103, 252 



Sealing 254 



Serial sections 322 



Thickness 17, 18, 249,322 



Tube-length 174 



Wiping .248 



Critical angle 64 



Crystals from frog for pedesis ..no 



Systems 180 



Crystallization under microscope 



58, 177-180 



Crystallography 176 



List of substances 179-180 



Currents, diffusion, avoidance 313 



Liquids 108 



Cutting sections 289 



Dark-ground illumination. 42, 56-60, 

 198 



Abbe illuminator 58 



Mirror 57 



Dark room for drawing 153 



Daylight, lighting 40 



Decalcifier 275 



Deck-plugs for collodion blocks—305 



Dehydration 258, 271, 311 



Demonstration, microscopes. .192-194 



Micro-projection apparatus 200-201 



Denatured alcohol." 271 



Deparaffining 302 



Designation of oculars 29 



Wavelength 165 



Determination of field of micro- 

 scope 33 



Equivalent focus 190-192 



Magnification 116, 191 



Working distance 47 



Diamond, writing 319 



Diaphragms and their employment 



42, 43. 50-58 



Diffusion currents, avoidance 313 



Direct, light 40 



Vision spectroscope 15s 



Disc, Ramsden 37 



Dissecting microscope 10, 194 



Dissociating liquids 275 



Dissociator, formaldehyde 275 



Miiller's fluid 275 



Nitric acid 261, 275, 280 



Distance, principal focal 4, 7, 35 



Standard at which the virtual 

 image is measured 123 



Working d. of simple micro- 

 scope or objective 47 



Working d.of compound micro- 

 scope 13, 39, 47 



Distinctness of outline 105 



Distortion in drawing, avoidance. 143 



Diverging lens 3 



Double spectrum 164 



Vision 116, 118 



Doubly contoured 107 



Refracting 175 



Draw-tube, Frontispiece. 



Pushing in 44 



