IN I 'IX 





Measuring thickness of slides and cov- 

 ers, 319-320 



spread of dividers, 134 

 Mechanical parts of compound micro- 

 scope, 27, 99 



care of, 92 

 Mechanical stage, 102 

 Mercuric chlorid, 362 



crystals, 361-362 

 Methemoglobin spectrum, 261 

 Method, collodion, 387 



paraffin, 375 

 Methyl alcohol, 349 

 Methylated spirits. 349 

 Methylene blue, 356 



alkaline, 362 



and eosin, 356, 398 

 Micrometer, 135, 143 



arrangement of ocular and stage, 



145. 158 

 calipers, 318 

 cobweb, 148 

 filar, 147-149 

 filling lines of, 136 

 net, no, 156 

 object or objective, 135 

 ocular and stage, 135 

 ocular or eye-piece, 143-153 

 ocular, valuation of, 143-145 

 ocidar, varying the valuation of, 



144, 157 

 photo-micrography and, 228 

 screw ocular, 146 

 stage and ocular (fig.), 135. 136 

 table of magnification, 143 

 Micrometry, 146-159 



adjustable objectives in, 150. 144, 



i57 

 comparison of methods, 153-157 

 compound microscope, 150, 159 

 condenser, image of a ale, 155 

 eikonometer, eiconometer, [49, 154- 



in jurisprudence, 157-159 

 limit of accuracy, 158 

 ocular micrometer, 1 52 

 remarks on, 1 57-159 

 simple mil n>M ope, 149 



Mil rometry, unit of measure in Ox), 150 



Micro-millimeter, 150 



mil run (p I, inikron, 150 



Mi( ro photograph, photo-mi< rograph, 



215 

 Mil ro-polariscope, . . 



experiments with. 2 

 Micro-projection, [84, 189, 197 



drawing with, 184, t8g 



magnification of, 170 



masks for spe< [mens in, 199 -200 

 Microscope, 4-6, 429, 430 



amplification of, 131 



binocular, 82-91, 43 l ~433 



care of, 92-94 



double objective, 83, 88 



Dutch, 429-430 



erecting, 88 



experiments with, 88-89, 9 1 



field, 29-30 



fig. of field, 84-85, 87 



focusing, 15, 36, 57-38, 42-43, 89, 

 224 



history of, 428-439 



magnification, 151 



photo-micrography with, 217-231 



polarizing, 264-269 



projection, and history, 197,438-439 



simple, 7, 1 33-1 40 



stand for embryos, 210 



solar, 198 



traveling, 105 

 Microscope, compound, 7, 16 



cost of, 100 



drawing with, 170-172 



Dutch and kcplcrian forms. 429- 



430 

 high-school, 99-100 

 history of, 429 430 

 laboratory, 99-100 

 magnification with, 1 $1 

 mechanical parts, 2; . 

 micrometry with, 150-159 

 optica] parts, i' 

 quality and cost. 99 

 testing, 97 99 



varying magnification of, 130, 157 

 working distant e 



