Stand, 18, 28 



Care of, 195 



Selection of, 183 



Striae, 112 



Substage, 33, 156 



Complete, 157 



Substage Condenser, Illumination with, 154 



Substage Diaphragm, 53 



Use of, 129 



Systems of Objectives, 65, 99 



Table, Drawing, 175, 193 



Test Objects, 132 



Test Plate, 133, 147 



Judging Spherical Aberration with, 142 



Use with Immersion Objectives, 147 



Triple Nose-piece, 43, 118 



Triple System of Lenses, 66 



Triplet Magnifiers, 16 



Tripod Magnifier, 18 

 Tube Length, 35, 36, 61, 183 



Tubes or Bodies, 44 



Turn Table, 193 



Under-Correction of Objectives, 86 



To Judge, 



Universal or Society Screw, 31 



Upper Iris Diaphragm, 157 



Variable Objectives, 64 



Virtual Focus, 6 

 Virtual Image, 8, 58, 105, 106 



Water Immersion Objectives, 



Working Distance, 17, 96 



To Measure, 

 Working Space below Stage, 



