INDEX 479 



PAGE 



Vapors, tests involving 314 



Velocity of abrasive wheels 434 



Vertical illumination, appearances in 30 



Vertical illuminators 77 



adjustment of 78 



auxiliary stage with 88 



disk 78 



lamp for use with 158 



Leitz 83 



Nachet... 82 



objectives for use with 80 



polarized light with 51 



prism 78 



stand for use with 85 



Tassin , 85 



Vises and clamps 1 7° 



Watch glasses 152 



Weight, determination of 212 



Work tables , X56 



Working distance 2 



Works microscopes 101 



Zinc, common salts 353 



detection by potassium mercuric thiocyanate 353 



oxalic acid 359 



sodium bicarbonate 357 



nitroprusside 361 



sulphide fibers, preparation of 440 



as reagent 4 x 5 



