INDEX 



459 



Illumination, centering sources of light, 



65 



dark -ground, 67-76, 120 



daylight, 45, 53 



entire field, 48, 63, 109-110 



micro-polariscope, 267 



micro-spectroscope, 257 



oblique with air and oil, 112-113 



opaque objects, 46, 434-435 



photo-micrography, 222 



Wollaston's camera lucida, 163 

 Illuminator or condenser, 57 

 Image, absorption, 235 



aerial, 31, 33 



color, 80 



erect, 34, 174-176 



formed by lenses, 281-284 



geometrical construction of, 12-14 



inverted real of objective, 34 



magnification of real and virtual, 

 133, 140, 176 



real fig. of, 13-14 



refraction, 80 



retinal, 7, 34 



size and position, 133-139, 176 



swaying, 66 



tracing, 173, 178-181 



virtual, 8, 14, 15, 34, 139-141 

 Imbedding, 377-378, 387-392 



double in collodion and paraffin, 



391-392 

 Immersion, 21, 64, 437 



condenser or illuminator, 64, 297 



fluid or liquid, 21, 299-300, 352, 

 437-438 



objective, 21, 47, 80, 437~438 

 Incandescence or line spectra, 250 

 Incident light, 45 

 Index of refraction, 272, 295 



absolute and relative, 273-274 



table of substances, 277 

 Indicator ocular, 102, 195, 433 

 Infiltration, 376, 387 



collodion, 387-388 



dish and oven, 377 



double with collodion and paraffin, 

 391-392 



paraffin, 376-384 



Infusions and infusoria, 335 



infusoria for dark-ground illumi- 

 nation, 70 

 Initial or independent magnification, 19, 



305 



Ink for labels, etc., 339-340 

 Interpretation of appearances, 107 



dark-ground illumination to aid, 



120 



summary for, 125 

 Inversion of the image, 124 

 Inversion in drawing, avoidance of , 172, 



176 



Invisible and visible radiation, 246-247 

 lodin in alcohol, 361 



for removing mercuric chlorid, 361- 



362 



stain for glycogen, 359, 398 

 Iris diaphragm, 47 

 Isochromatic plates, 235 

 Isolation, 330 



formaldehyde, 332 

 nitric acid, 333 

 Isotropic objects, 267 



Japanese filter (lens) paper, 93 



Jar for slides, 360, 363, 385 



Jelly, glycerin, 357 



Jena glass, 437 



Jurisprudence, rm'crometry in, 157, 159 



Kerosene lamp, 61 

 Knife, sharpening of, 372 

 support, 380 



L 



Labels and catalogues, 337 

 Labeling microscopic preparations, 337- 

 338 



photographic negatives, 214 



serial sections, 410 

 Laboratory compound microscope table. 



55,95 

 desk, 96 

 lockers, 345 

 Lagrange disc or circle, 34 



