IXUEX. 



515 



Tougne, 



of frog, circulation in, 370 



of limpet, 455 



of wlielk, 454 

 Topping, Mr., 



cutting-maehine of, 337 



troughs for dissecting, 349 



thin cells, 291 

 Tracheae, 



to dissect, 367 



of insects, 423 

 Transparent objects, 



to view, 182 



to illuminate, 186 

 Triplet, Holland's, 31, 65, 162 

 Triple object-glass, 40 

 Troughs, 



for polyps, 140 



for fish, 142 

 Tube, 



cells, 292 



draw, 69 



fishing, 133 

 Tulley, Mr., 



object-glass of, 36 



U 

 Use of Miobosoope, 181 



VALENTiif's Knife, 347 

 Valentine, 



dissecting microscope of, 60 



white lead cell, 286 

 Vallianeria, circulation in, 379 



to keep, 382 

 Varley, Cornelius, 



improvements in microscopes, 44 



compound miscroscope of, 93 



forceps, 135 

 Vegetable, 



sections of, to make, 332 



skeletons, siliceous, to prepare, 

 333 



cuticles, list of, 400 



cellular tissue, 401 



fibro-cellular tissue, 401 



spiral vessels, 402 



ducts, 403 



A''egetable tissues, 400 



to dissect, 352 

 Viviani, 3 



W 



Watohmakek's Lens, 50 

 Weedon, Mr., 



instruments of, 349 

 Wells, dark, 128 

 Wenham, Mr., 



illuminator of, 116 



new medium for mounting ob- 

 jects in, 282 

 Whalebone, 



to cut, 241 

 Wheel auimacule, 



localities for, 394 

 Whelk, tongue of, 454 

 White, Alfred, 



lever stage, 89 

 Williams, Mr. John, 



apparatus for infusoria, 386 

 Wilson, J., 



microscope of, 11 



opaque microscope of, 12 

 Withering, Dr., 



microscope of, 25 

 Wollaston, Dr., 



microscope of, 30 



doublet of, 30, 65, 161 



periscopic doublet of, 28 

 Wood, 



cuttings of, by Custance, 24 



chippings of, 341 



sections of, to make, 335, 338 



ditto ditto, to mount, 340 



sections of, list of, 404 

 Woods, fossil, 405 

 Woody fibre, list of, 403 , 



Woodward, Mr., 



work of, 246 

 Writing diamond, 261 



Zahn, Jean, 

 work of, 9 



Zoophytes, 



list of, 415 



PriuteJ by W. ]1. UOX, 5, Great Queen-street. 



33* 



