468 



INDEX 



Stake's and Angstrom's law tor ab- 

 sorption spectra, 252-253 

 Storing negatives, 214 



preparations, 340-345 



ribbon sections, 381 

 Strops and stropping for section knives, 



372 

 Student or laboratory locker, 345 

 Style brief, Wistar Institute's, 188 

 Substage, '27, 188 

 condenser, 57 

 Sudan III for fat staining, 365 

 Sulphonal with polariscope, 269 

 Sulphuric or sulfuric add, ether, 320, 356 

 Support of microtome knife, 380 

 Surface sections, 400 

 Swaying of image, 66 

 Systems of objective, front, middle, and 



back, 20-21 



Table, black for, 365 



laboratory or student, 55, 95-96 



projection and drawing, 179, 186 

 Tables, aperture of objectives, 296 



coUodion method, 391 



immersion liquids, 301 



magnification and ocular 



micrometer valuation, 143 



negative record, 232 



paraffin method, 386 



refractive indices, 277 



size of field, 30 

 Temporary mounting, 321 

 Tester for homogeneous liquids, 299-301 

 Testing a camera, 212 



a microscope and its parts, 97 

 Thickness of cover-glasses for non-ad- 

 justable objectives, 285-286 



for serial sections, 404 

 Tissues, fixing, etc., 368 



washing apparatus for, 369 

 Towels, lintless, 315 

 Tracing images for drawings, 173, 178, 



181 

 Transections or cross sections, 406 

 Transferring collodion sections, 390 

 Transmitted light, 46 



Tray for ribbons and slides, 199, 342- 



344 

 Tripod magnifier, 16, 211 

 Tube of microscope, 47 

 Tube-length (fig.), 47, 79, 286-287 

 cover-glass adjustment by, 287 

 ••Turn-table (fig.), 324 



U 

 Ultramicroscopy, 75 

 Unadjustable objectives and covers for, 



285-286 

 Under-correction, 285, 288 

 Unit of measure in microscopy (ji), 150 

 wave length of light, 256 



Valuation of ocular micrometer, 144-148 

 Varnish for writing on glass, 401 

 Varying magnification in compound 

 microscope, 139, 157 

 ocular micrometer valuation, 144, 



Velocity of light and sine law, 277 



under the microscope, 117 

 Velox printing paper, 178 

 Vertical carhera (fig.), 210 



microscope, projection with, 203 



sections, 400 

 Vials, straight and bent-neck, 331 



block with holes for, 332 

 Vibrations, avoidance in photography, 



217-218 

 Virtual focus, 12 



image, 8, 9, 15, 133 



standard distance at which meas- 

 ured, 139 

 Visible and invisible radiation, 246-247 

 Visibility, 127, 234 

 Vision, double, 134 



standard for adults, 130 

 Visual angle (fig.), 6, 9, 127-129 



focus, 222 



necessary for resolution, 127-129 



W 

 Washing apparatus for tissues, 369 

 Watch glasses, 349, 359 



