45, CORNHILL, E.G., AND 122, REGENT STREET, W., LONDON. 



601 



Watchmaker's Magnifiers, 700. 

 Watchman's Comptroller, Patent, Supplied 



To Order. 



Water Battery, 2541. 

 Barometer, 24. 

 Baths, 2114. 

 Bottle, 2116. 

 Elastic. 2198. 

 Colours, page 344. 

 Hammers, 2112, 2891. 

 Pumps, models of, page 472. 

 Ram, Mongolfier's,2931. 

 Snail, 2929. 



Troughs, Glass, for Lantern, 1798. 

 Wheels, models of, page 480. 

 Gauges for Boilers, page 197. 

 Pressure, Table, page 480, 559. 

 Water-tight Exciting Baths, 3263. 

 Waves of the Sea, moving Lantern Slide to 



exhibit, 1824, 1825. 

 Waves, length of, page 67. 

 Wealemefna, 1285. 



Weather Glasses, see Barometers, &c. 

 Wedge, Gladstone's, 1089. 



Improved Model of, 3049.* 

 Wedgwood's Pyrometer, 597, 2959. 

 Weed Knife, 1023. 

 Weighing and Measuring Machine, for use 



with Spirometer, 3090. 

 Machine, Duckham's, 592. 

 Weights, Decimal, 2222. 

 Aluminium, 2353. 

 Grain, Standard, 2358, 2359. 

 French, 2360 to 2362. 

 Troy, 2356. 

 Paper, 1648. 



Well Fixing Dishes, Porcelain, 3270. 

 Wheatstone's Anorthoscope, 754. 



Apparatus for determining 

 differential resistance, 2769. 

 Kaleidophone, 3067. 

 Stereoscope, fig. 768. 

 Ditto, Reflecting, To Order. 

 Telegraph Instruments, Magneto 



Electric, pages 466, 467. 

 Rheostat, 2768. 



Photometer, 750. 

 Military Telegraph, page 467. 

 Magnetic Counters, page 467. 

 Wheel Barometers, page 136 to 138. 

 Wheels, different forms of, 3047. 

 Whewell's Anemometer, 148. 

 Whirling Rings, 3044. 

 Table, 3044. 



Apparatus for Gassiot Star, 2733. 

 Whirls, Electrical, 2462. 



Whistles, Steam, page 210. 



White Light, Apparatus to show composition 



of, 718, 724, 725. 

 White Cloud Illuminator, 952. 

 Whole and Half Drawing Compasses, 1545. 

 Will & Varrentrap's Nitrogen Apparatus, 



2144. 



Percy's Apparatus for Alkalies, 2142. 

 Wind Gauges, pages 96 to 111. 



Vanes, page 96. 

 Windlass, Model of, 3049. 

 Windmills for Air Pump, 2886. 

 Wine or Liqueur Analyser or Test, page 193. 

 Spirit Condensing Still or Alcoholic 



Test, page 193. 



., and Spirit Dip Rule, page 345. 

 Winter's Electrical Machine, 2381. 

 Wire Cage for Breaking Squares, 2898. 

 Conducting, covered with Cotton, Silk, 

 Gutta Percha, &c , 2507, 2584, 2717, 

 2771, 2799, 2811. 

 Gauge, Milner's, page 348. 

 Gauze Cylinder, Electrical, 2487. 

 Gauze, 2350. 

 Gold, Silver, Platinum, Copper, 



Magnesium, &c., To Order. 

 Frames, Rectangular (Thermo-elec- 

 tric), 2721. 



Sliding, and Brass Plate, 2858. 

 Rope Lightning Conductors, 



pages 127 to 129. 



Woodward's Electrical Machine, 2382. 

 Wollaston's Cryophorous, 1948, 2970. 

 Calorimotor, 2523. 

 Galvanic Battery, 2520. 

 Goniometer, 753. 

 Steam Apparatus, 2996. 

 ' Boiling Point Apparatus, 131. 

 Wood Boards for preparing Paper, To Order. 

 Clips, 972, 3291. 



Woolwich Set of Drawing Instruments, 



1481. 



Woulffe's Bottles, page 394. 

 Writing Diamonds, 2224, 1003. 

 Wurtemburg Syphon, 2091. 



Yacht Signal Lamps, pages 322, 323. 



Compass, page 319. 



Aneroid Barometers, page 149. 



Barometers, page 145. 



Binnacles, pages 319, 326. 

 Y Level, best, 1127 to 1 130. 

 Y Shaped Keepers for Magnets, made 



To Order. 



Youth's Chemical Cabinets, page 409 

 2 R 



