INDEX 



459 



Illumination, 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, 11 2-1 13 

 opaque objects, 46, 434~435 

 photography, 209 

 photo-micrography, 222 

 Wollaston's camera lucida, 163, 

 168 



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, i33 _I 39» J 76 

 swaying, 66 

 tracing, 173, 1 78-181 

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

 Imbedding, 377-378, 387~39 2 



double in collodion and paraffin, 



39 I_ 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, 



39I-39 2 

 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 

 Iodin 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, 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 compound microscope table, 



55,95 

 desk, 96 

 lockers, 345 

 Lagrange disc or circle, 34 



