INDEX. 



Abbe's apertometer, 62 



camera lucida, 113 



illuminator, 43, 89 



test-plate, 72 

 Aberration, spherical, 52, 65, 73 

 Absolute alcohol, 132 

 Acetate of copper preserving 6uid, 

 181 



screens, 88 

 Achromatic and apochromatic objec- 

 tives compared, 56 



correction, 49, 74 



objectives, 55 

 Acidulated alcohol, 164 

 Actinomycosis, 163 

 Adjusting a microscope, 121 

 Alcionium, spicules of, 210 

 Alcohol, acidulated, 164 

 Alcohol, grades of, 280, 281 

 Aleurone, 183 

 Algffi, marine, 184 



preserving fluid for, 181 



staining and mounting, 172 

 Alum water, 282 

 Ammonium bichromate, 133 

 Analyzer, 102 

 Anohylostoma, 165 

 Angular aperture, 60 

 Aniline, blue, 147 



blue-black, 147 

 Animal sections, staining, 145 



tissues, hardening, 128 

 Annular vessels, 177 

 Antheridia of moss, 181 

 Anthers, 168 

 Apertometer, Abbes', 62 

 Aperture, angular and numerical, 60 



and power, 64 

 Aplanatio aperture, 93 



magnifiers, 34, 35 

 Aplanatism, 49 



Apochromatic correction, 49 



objectives, 1, 54 

 Aqueous media, mounting in, 153 

 Archegonia of moss, 181 

 Ashe's camera lucida, 113 



Bacilhis anthracis, 160 

 tuberculosis, 159 



Bacteria, staining and mounting, 159 



Baker's condenser, 90 



microscopes, 28, 32, 36, 68 

 monochromatic light apparatus, 

 86 



Beale's reflector, 113 



Beck's condenser, 91 



microscopes, 25, 39, 38 

 two-speed fine adjustment, 24 



Berlin blue for injecting, 166 



Bertrand's lens, 29 



Binocular eyepieces, 81 

 microscopes, 31 



Bismark brown solution, 282 



Black varnish, 222 



Bleaching, 169 



Blood, double staining, 153 



Body-tube, the, 27 



Borax carmine, staining, 169 



Bone, 185, 205 



Books, 281 



Botterill's trough, 118 



British microscopes, 42, 231 



Brush for ringing, 223 



Bull's-eye condenser, 104 



0. 



Cambridge rocking microtome, 231 

 Camera lucida, various, 112 

 Canada balsam, finishing off, 222 

 mounting in, 175 



