458 



INDEX 



Focusing, effect of cover-glass on, 42- 



43 



experiments, 36-38 



for printing enlargements, 233-234 



glass, 210-212 



high objectives and low, 37 



in photo-micrography, 224 



screen for photography, 2 10-21 1 



simple microscope, 15, 36 



slit of micro-spectroscope, 254 



stand, 210 

 Form of objects, determination of, in 

 Formaldehyde, formalin, 356 



dissociator, 354 



isolation with, 332 



percentages, 347 

 Formula for aperture, 295 



for cataloguing specimens, 338-339 



for desired percentages, 346 

 Fraunhofer lines, 251 

 Free-hand sections, 374 

 Free working distance, 39-40 

 Front combination or lens of objective, 



21 

 Frontal sections, 407 

 Fuchsin, acid, 364 



basic, 355 



picro, 364 

 Function of objective, 31, 32 



of ocular, 32 



Gauge for cover-glasses, 318-319 



Gauze absorbent, 315 



Gelatin, 361 



Geometrical construction of images, 12, 



281 

 Glass cleaning mixture, 320 



ground, 31 



rod, appearance under microscope, 



slides or slips, 312-317 



varnish for writing on, 401 

 Glasses, graduate, 348 



watch, 249, 259 

 Glycerin, 357 



Congo, 354 



mounting objects in, 325 



Glycerin jelly, 357 



for anatomic preparations, 358 

 for microscopic preparations, 326- 



327,357 

 Glycogen, iodin stain for, 359, 398 

 Graduate glasses, 348 

 Ground-glass focusing screen, 31, 210- 



211 

 preparation of, 31 

 Gun cotton, 353 



H 



Hardening collodion, 388 



tissue, 368-369 

 Hematin, 359 

 Hematoxylin, chloral, 359 



iron, 359 



staining with, 394 

 Hemoglobin spectrum, 260 

 High School microscope, 99 

 Highly refractive, 116 

 Histology, physiologic, 340 

 History of lenses and microscopes, 424- 

 442 



of photo-micrography, 216 

 Holder for magnifier, 17 



for sectioning paraffin, 378 

 Homogeneous immersion condenser, 64, 

 297 



cleaning, 82 



experiments with, 81-82 



history of, 437-438 



liquid, 21, 299-300, 352, 438 



numerical aperture of, 295-296 



objectives, 21, 295, 437 



tester, 299-300 

 Hones and honing, 372-373 

 Hood for front of objective and fig., 203 

 Huygenian ocular, 25-26, 146 



for movable scale micrometer, 146 



for photo-micrography, 221 



Illumination, 45-76 



air and oil, n 2-1 14 

 artificial, 54-75 

 camera lucida, 163-168 

 centering sources of light, 65 



