472 INDEX 



PAGE 



Files, method of using, to prepare metals for study 435 



Films of material for analysis, preparation 303 



Filter tubes 285 



Filtration 284 



Fluorescence microscope 1 . . 49 



Fluorides as reagents, precautions 316 



Forceps 149, 155 



Fusions 296 



Gas lamps 153 



Gases, testing for evolution of 311 



Glass, refractive index of '. 243 



Glass rods 148 



Glycerin , use of 302 



Grade of abrasive wheels 432 



Grain of abrasive wheels 432 



Graduated circles, testing of 56 



Grain size, determination of 193 



Greenough-type microscopes 71 



Grinding material for analysis 297 



opaque objects for microscopic study 43 l 



wheels 43 T 



Ground glass with Abbe condenser 27 



loss of light in using 161 



Habit of crystals ., 252 



Hack saws, small 169 



Half-shadow illumination 231 



Hemacytometer cells 206 



Hemihedral crystals 251 



Hemimorphic crystals 251 



Hemispheres for orientation 142 



Hexagonal system, characteristics of 267 



Holohedral crystals 251 



Hot stages 220, 222 



Hydrofluoric acid as a reagent 316 



Idiomorphic crystals 251 



Ignition 296 



Illumination 2 ° 



dark-field 36 



differential color 47 



dual 35 



orthogonal 47 



polarized light 5° 



reflected light 29 



with Silverman lamp 33 



