478 INDEX 



PAGE 



Spectroscopic ocular 131 



Stage, attachable mechanical 138 



method of centering 55 



Stellite instruments 170 



Step micrometer 185 



Strontium, common salts 339 



detection by bichromates 347 



oxalic acid , 341 



sodium bicarbonate 349 



sulphuric acid 339 



Sublimation 288 



Subliming cell 291 



point determinations '. 291 



Sulphates, detection of 427 



Sulphides, detection of 428 



Sulphites, detection of - 428 



Sulphuric acid, reagent in qualitative analysis 415 



Supports for objects '. 149 



Symmetrical extinction 254 



Tables for microscopic work 156 



Tartrates, detection of 429 



Testing graduated polarizers and analyzers 56 



stages 55 



Tetragonal system, characteristics of 267 



Textile fibers 452 



Thermocouple for melting points : 224 



Thickness, measurement of : 100, 243 



Thomae cell iu 



Thiocyanates, detection of 428 



Thiosulphates, detection of 428 



Tin, common salts 393 



detection by cesium chloride 393 



Tongs 155 



Trichites 251 



Triclinic system, characteristics of 267 



Trimorphous crystals 251 



Tungsten lamps for microscopy 161 



Turmeric-viscose-silk fibers 448 



Ultracondenser, Jentzsch 122 



reflecting 37 



Ultramicrons 107 



Ultramicroscopes 105 



Ultramicroscopic studies, preparing solids for 113 



Ultraviolet ray illumination 48 



Uniaxial crystals 254 



