INDEX 



459 



Illumination, dark-ground, 67-76, 120 

 daylight, 45, 53 

 entire field, 48, 63, rog-iio 

 micro-polariscope, 267 

 micro-spectroscope, 257 

 oblique with air and oil, 112-113 

 opaque objects, 46, 434-435 

 photography, 209 

 photo-micrography, 222 

 Wollaston's camera lucida, 163, 

 168 



Illimiinator 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; 140S 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 parafiSn, 



391-392 

 Immersion, 21, 64, 437 



condenser or illuminator, 64, 297 

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



437-438 



objective, 2r, 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, 



30s 

 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, 36r 



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 



J 



Japanese filter (lens) paper, 93 



Jar for slides, 360, 363, 385 



Jelly, glycerin, 357 



Jena glass, 437 



Jurisprudence, micrometry in, 157, 159 



K 

 Kerosene lamp, 61 

 Knife, sharpening of, 372 

 support, 380 



Labels and catalogues, 337 



Labeling microscopic preparations, 337- 



338 

 photographic negatives, 214 

 serial sections, 410 

 Laboratory compoimd microscope table,, 



55,95 

 desk, 96 

 lockers, 34s 

 Lagrange disc or circle, 34 



