582 



NEGEETTI AND ZAMBEA, HOLBORN VIADUCT, E.G., 



Gunter's Measuring Chain, 1207. 



Scales, 1595, 1597. 

 Gutta Percha Battery Cells, 2579. 

 Bottles, 2257. 



Exciting Baths, page 540. 



Frames, for Passe Partout, 



To Order. 



Funnels, 2241. 



,. Goods, Various, 2256. 



Gyle Tun Thermometers, 283. 

 Gyroscope, page 495. 



described, pages 495, 496. 



Hair Dividers, 1500. 

 Hammers, Mineralogical, 2258. 



;, Water, 2112. 

 Hand Folding Spectacles, page 215. 

 Hand Glass for Air Pump, 2869. 

 Handles, Electrical Glass, 2499. 

 Hanging or Cabin Compasses, page 320. 

 Hare's Calorometer, 25U4. 

 Harpoon Log, Walker's, 1390. 

 Harpoon Sounding Machine, 1393. 

 Harris's Balance Beam Electrometer, 2419. 



Electro-Thermometer, 2422. 



,. Electrical Machine, To Order. 



Unit Jar, 2420. 



Thunder Cloud Experiment, 2470. 

 Hall Thermometers, page 153. 

 Halleur's Wind Vane, 135. 

 Harbour and Pier Head Lights, page 224. 

 Hand Magnifiers, pages 221, 222. 

 Hay Stack Thermometer, 355. 

 Head of Hair, Electrical, 2445. 

 Head Rests, page 537. 

 Heat, Apparatus to illustrate, page 513. 

 Hedley's Circumferenter, 1154. 

 Helio- Pyrometer, or Solar Intensity Appa- 

 ratus, page 60, 56. 

 Heliograph, page 512. 

 Heliostat, Spencer's, 1737. 

 Hero's Steam Engine, 2997. 

 Hemisphere, Magdeburg." 2872. 

 Hemming's Blowpipe, Safety, 2168. 

 Henley's Quadrant Electrometer, 2413. 



Universal Discharger, 2407. 

 Hints for Applying Medical Galvanism, page 



458. 



Hittorf's Apparatus, 21/. 

 Horizons, Artificial, page 312. 

 Horizon Sweeps, page 234, Fig A. 

 Horn Centres, 1636. 

 Forceps, 3297. 

 Horse Eule or Gauge, 1707. 

 Horse-shoe Magnets, 2643. 



Compound, 2644. 



Horse-shoe Magnets on foot, 2685. 

 Horsford's Nitrogen Apparatus, 2145. 

 Horticultural Self- RegisteringThermometers, 



Negretti and Zambra's, 324. 

 Hot Air Bath, Taylor's, 2334. 

 Air Thermometers, 368. 

 Water ditto, 364. 

 Blast ditto, 370. 

 Blast Blowpipes, 2180. 

 Hour and Half-hour Glasses, page 325. 

 Hourly Recording Thermometers, pages 52 



to 56. 



How's Salinometer, 521. 

 Howson's Long Range Barometer, page 14. 

 Human Eye, Model of, 745. 

 Hutchinson's Spirometer, 3088. 

 Hydraulic Pressure Gauge, page 209. 



Machinery, Presses and Pumps, 



page 509, 

 Hydrogen Balloons, 2157. 



Gas Apparatus, 1990. 



Gas Generator, 2248. 



,, Lamps, for instantaneous light, 



2270. 

 Hydrometers, page 176. 



Aquarium, 461. 



Beaume's, 421, 423, 471. 



Board of Trade, Marine, 462. 



Carrier's, 498. 



for Chlorine Solutions, 468. 



Gay Lussac's, or Alcoholmeter, 499, 

 509. 



Combined with Saccharometer, 446. 



for Lemon Juice or Citric Acid, 480. 



for Soap or Soap Ley, 472. 



for Syrups, 470. 



for Wine, 469. 



., Negretti and Zambra's Improved, 

 557. 



, , Photographic or Argentometer , 511. 



Richter and Tralle's, 503. 



Scheefer's, 497. 



small Glass, 452, 453. 



Specific Gravity, 419, 420. 



Sikes', or Sykes', brass, 427, 

 page 178. 



Sykes' Glass, 425. 



Sikes', described, page 178. 



Standard Brass, 431. 



Pocket, 432. 



Hydrometer, Fahrenheit's, 501. 



Nicholson's, 533. 



Normal Alcoholmeter, 504. 



Dicas's and Allan's, 434. 



Paraffin or Petroleum Standard, 

 419. 



