INDEX 



457 



Dutch compound microscope (fig.), 429 

 Dyes in microscopy, 392-393 



Eikonometer (fig.), I 54~i5S 



micrometry and magnification with, 



IS4-I55 



Elastic stain, 355, 397 

 Electric arc lamp, 417-419 



incandescent for projection, 41 7-420 

 Electrification of paraffin ribbons, 381 

 Embryos, camera for, 210 



photographing, 209 



serial sections of, 402 

 Enlargements of photographs, 232-234 



focusing and printing for, 233 

 Eosin, 355-356 



counterstaining with, 395-396 

 Eosin-methylene blue, 356, 398 

 Equivalent focus, oculars and objec- 

 tives, 19 



Erect images, 174-176 

 Erecting binocular, 88 

 Ether-alcohol, 356 



sulphuric, 356 

 Ethyl alcohol, 348 

 Examination of dust, etc., in rooms, 123- 



124 



Excluder of light (fig.), 226-227 

 Experiments, 15, 28-34, 37-40, 53-56, 

 61-70, 77-82, 88-91, 109-125, 

 224-231, 258-264, 267-269 



adjustable and immersion objec- 

 tives, 77-82 



binocular microscopes, 88-91 



compound microscope, 28-34 



dark-ground or field, 67-75 



focusing, 37-40 



interpretation of appearances, 109- 

 125 



lighting, 53-70 



micro-polariscope, 267-269 



micro-spectroscope, 258-264 



mounting, 321 



photo-micrography, 224-231 



simple microscope, 15 

 Exposure for photographs, 240-241 



with color screen, 241 



Eye and microscope, 5 



visual acuity, 127 



visual angle, 128 

 Eyes, care of, 94-96 



muscae volitantes in, 122 



unlikeness of the two, 91 

 Eye-lens of the ocular, 25, 308-309 

 Eye-piece or ocular, 23 



demonstration, 433 



micrometer, 143, 153 



parfocal, 38-39, 309 

 Eye-point, 15, 33 



demonstration of, 33 



Farrant's solution, 356 

 Field and fig. of, 29, 1 10 



camera lucida, 161-162 



illumination of, 48, 63, 109-110 



view with microscope, 29, 

 Field-lens of ocular, 33, 308-309 



dust on, 109 



Filar micrometer ocular, 147-149 

 Filtering balsam, 350 

 Fine adjustment, 27, 97-98 

 Fir, balsam of, 350 

 Fixation, 368 

 Fixative, albumen, 348 

 Fixer, 368 



Flemming's fluid, 356 

 Fluid, Muller's, 362 



Zenker's, 366 



Fluorite lens, n, 292, 436-437 

 Focus, n, 284 



actinic and visual, 222 



appearances with different, 121 



equivalent of objectives and ocu- 

 lars, 19, 27 



depth of and aperture, 303-304 



principal, 11-12, 284 

 Focus, real, 12-14 



virtual, 12 



visual and actinic, 222 

 Focusing, 15, 36 



adjustments, testing, 97-98 



binocular microscope for the two- 

 eyes, 89 



compound microscope, 37-38 



