INDEX. 



507 



Condenser, 

 Boss's, 113 

 Smith's, 115 

 Abraham's, 119 

 Shadbolt's, 205 

 Gillett's, 207 

 Condensing lens, 122 



small, 123 

 Corals, list of, 415 

 Corks, loaded, 350 

 Correction of object-glass-, 



Ross's, 170 

 Coventry, 



micrometer of, 209, 211, 217 

 Covers of thin glass, 265 

 Crystallization of salts, to view, 449 

 Cuff, 



microscope of, 20 

 micrometer of, 22, 210 

 Culpeper, 



microscope of, 20 

 Cultivation of water-plants, 389 

 Currents in fluids, to view, 451 

 Custance, 



wood sections of, 24 

 Cuthbert, 



reflecting microscope of, 35 

 Cuticles, 



vegetable, 400 



siliceous, vegetable list of, 400 

 Cutting-machine, 335 

 Topping's, 337 

 forceps, 345 

 board for glass, 262 

 method of using, 263 

 Cylinders, 



mounting objects on, 321 

 Cynips, 420 



D 



Dahceb, 



microscope of, 96 

 Dark chamber, 112 



stops, 128, 212 

 Darker, Mr., 



polarizing apparatus of, 249 



method of mounting objects, 317 



machine for cutting thin glass, 

 268 



cell, 285 

 Deep cells, 



to mount objects in, 297 

 Dermestes, 



hairs of, 469 

 Desmidiese, 



to collect, 391 



method of mounting, Mr. 

 Thwaites's, 287 

 Diamond, 



lens, 66 



Diamond, 



cement, 276 

 glazier's, 259 

 writing, 261 

 method of using, 260 

 Diaphragm, 111 

 French, 125 

 Directions, preliminary, 181 

 Direct light, 193 

 Discs, 



to mount opaques on, 318 

 Dissecting instruments, 343 

 forceps, 343 

 cutting forceps, 345 

 microtome, 345 

 needles, 348 

 needle-holders, 349 

 non-cutting, 349 

 rests, 351, 354 

 troughs, 349 

 scalpels, 346 

 scissors, 344 

 spring scissors, 345 

 Valentin's knife, 347 

 Dissecting lens, 51 

 Dissecting microscope, 

 Naehet's, 355 

 Powell's, 52 

 portable. Smith's, 54 

 Ross's, 55 



Slack's, 56 



Ross's, 58 



Valentine's, 60 



Smith and Beck's, 62 



Oberhauser's, 355 



Author's, 359 



Dissection, 



of nerve, 359 



muscle, 360 



animal tissues, 353 



vegetable tissues, 352 



tracheae of insects, 361 



spiracles of insects, 362 

 Divini Eustachio, 



microscope of, 5 



doublet of, 28 

 DoUand, 



achromatic telescope of, 33 

 Doublet, 



periseopic, "WoUaston's, 28 



microscopic, WoUaston's, 30, 65, 

 161 



Herschel's, Sir J., 29 

 Draw tube, 69 

 Drebbel, Cornelius, 2 



microscope of, 3 

 Drilled cells, 293 

 Dry method of mounting objects, 313 



Gillett's, 314 



paper cell, 316 



