INDEX 



293 



Illuminating, cone (for condenser), aper- 

 ture of, 45; objective, 13, 238; 

 power, 21. 



Illumination, for Abbe camera lucida, 

 129; artificial, 37, 48, 50; artificial 

 for photo-micrography, 229 ; center- 

 ing image of source of, 44 ; with air 

 and oil, 94, 95 ; dark ground, 49, 

 50 ; daylight, 35 ; of entire field, 51 ; 

 lamp for, 50 ; methods of, 35, 49 ; for 

 micro-polariscope, 151 ; for micro- 

 spectroscope, 144 ; oblique with air 

 and oil, 94, 95 ; of opaque objects, 

 144, 238 ; for photography, 208, 

 216, 229, 241 ; for photo-micrography, 

 2 3°> 2 33. 2 3S ; for projection, 250 ; for 

 Wollaston's camera lucida, 124, 



Illuminator, 41-50; vertical, 13, 23S. 

 See also condenser. 



Image, actinic, 221 ; aerial, 30, 230 ; center- 

 ing i. of source of illumination, 44 ; 

 color, 52, 58 ; inverted, real of ob- 

 jective, 30; of flame, 45 ; geomet- 

 rical construction of, 6 ; and object, 

 size and position, 5, 9, 10S ; real, 5, 9, 

 30-32, 103 ; refraction, 52, 5S ; retinal, 

 6, 9, 32 ; swaying of, 4S ; virtual i, 

 and standard distance at which meas- 

 ured, 6, 109. 



Image-power of objectives, iS. 



Imbedding, 177, 185. 



Immersion, fluid or liquid, 58, 271 ; illu- 

 minator, 47 ; objective, 11, 58-59. 



Incandescence or line spectra, 137. 



Incident light, 35. 



Index, of refraction, 53 ; of medium in 

 front of objective, 16-19. 



Indicator ocular, 247. 



Infiltration, collodion, 177 ; paraffin, 1S4; 

 paraffin dish for, 279. 



Ink for labels and catalogs, 195 ; for 

 drawing, 274. 



Interpretation of appearances under the 

 microscope, 90-102. 



Inventory card, 2S1. 



Iris diaphragm, 82, 157. 



Irrigating with reagents, 170. 



Isochromatic plates, 217. 



Isolation, 173 ; with formaldehyde, 173 ; 

 nitric acid, 175. 



Isotropic, 152. 



J-K 



Japanese filter or tissue paper, 60. 

 Jelly, glycerin, 170-171, 201. 

 Jena glass, 71. 



Jurisprudence, micrometry in, 121. 

 Knife support, 277. 



Labels and catalogs, 194-196, 203. 



Labeling microscopical preparations, 194; 

 photographic negative, 211 ; serial 

 sections. 193. 



Laboratory compound microscope, 64, 

 71-89. 



Lamp, acetylene, 37, 5r, 229 ; condenser, 

 250 ; electric arc, 37, 229, 250-255 ; 

 petroleum, 37, 50-51, 220, 229 ; spirit, 

 1S3. 



Lantern, magic, 249 ; slides, 241. 



Law of color, 13S. 



Lens, concave, 3 ; converging, 3 ; convex, 

 4 ; eye, 22 ; field, 32 ; holder, 7, 175, 

 217, 22S ; paper, 60 ; system, 9 ; 

 thick, 3. 



Lenses of micro-projection apparatus, 

 cleaning, 265. 



Letters in stairs, 93 ; fur photo-engraving, 

 274. 



Lettering oculars, 26. 



Light, with Abbe illuminator, 4S ; ace- 

 tylene, 37, 51, 229 ; artificial, 37, 50, 

 229 ; axial, 36, 40, 48 ; direct, 35 ; 

 central, 36, 40 ; electric, 37, 229, 250 ; 

 incident, 35 ; with mirror, 37 ; ob- 

 lique, 36, 41, 48 ; petroleum, 37, 50, 

 220, 229 ; for photo-micrography, 229; 

 polarized, 150; reflected, 35; sun, 

 229; transmitted, 36; utilized with 

 different objectives, 17; for vertical 

 illuminator, 239 ; wave length of, 

 142 ; Welsbach, 37, 229. 



Lighting, 35 ; for Abbe camera lucida, 

 129; artificial, 50; experiments, 37; 

 with horizontal camera, 230; for mi- 

 cro-polariscope, 151; for micro-spec- 

 troscope, 144 ; with a mirror, 37, 40; 

 with daylight, 35, 229 ; for photog- 

 raphy, 20S, 216; for photo-micro- 

 graphy, 229, 230; for vertical illum- 

 inator, 229. 

 Line spectrum, 137. 



Liquid, currents in, 98 ; homogenous, 1 1, 

 58, 271. 



M 



Magic lantern, 249. 



Magnification of compensating oculars, 

 24 ; effect of adjusting objective, 1 18 ; 

 determination of, 103-109 ; expressed 

 in diameters, 103 ; initial or indepen- 

 dent, 273 : of microscope, 103 ; in 

 micro-projection, table, 262 ; of mi- 

 croscope with Abbe camera lucida, 

 131 ; of microscope, compound, 105 ; 

 of microscope, simple, 104; of photo- 



