INDEX TO L. CASELLA'S CATALOGUE. 



251 



Harris's Unit Jar Electrometer, 1964. 

 Haiiy's Needle Electroscope, 1955, 

 Hawthorne's Slide Rule, 580. 

 Head of Hair, 1993. 

 Headley's Dials, 404 and 404*. 

 Head Rests, 1769 to 1772. 

 Hearing Trumpets, 2583. 

 Helio-pyrometer, 32. 

 Hemispheres, Madgeburg, 2229. 

 Henley's Quadrant Electrometer, 1952. 



Universal Discharger, 1992. 

 Hoare's Double Slide Rule, 582. 

 Hofmann's Combustion Furnace, 2737. 



Gas Lamp, 2723. 



Holtz's Electrical Machines, 1935. 

 Homersham's Gun Metal Gauge Taps, 2344 

 Horizons, Artificial, 876 to 879. 

 Horizontal Sun Dials, 848 to 856. 

 Horse Shoe Magnets, 2033 to 2038. 



Compound, 2039 to 



2056. 



Horsford's Nitrogen Bulb, 2780. 

 Hot Air Baths, Taylor's, 2730 and 2732. 

 Hot-bed Thermometer, 179. 

 Hot-blast 283. 



Oil Ovens, 2733 and 2734. 

 Water Thermometers, 277 and 278. 

 Household Lifting Pump, Model of, 2282. 

 Hydraulic Press, 2269. 



Pressure Gauges, 2315 to 2317. 

 Ram, Montgolner's, 2272. 

 Testing Apparatus, 2270. 

 Hydrostatic Balances, 2286. 

 Bellows, 2266. 

 Equilibrium Apparatus, 2263 



and 2264. 

 Paradox, 2265. 

 Presses, 2267 and 2268. 



Bramah's, 2267 & 2268. 

 Weighing Machines, 2908 to 



2914. 



Hydrometers, Aquarium, 2549 and 2550. 

 Beaume's, 2538 to 2540 and 



2554. 

 Board of Trade, 2533 and 



2534. 

 Carrier's, 2545. 



for Acids, etc., 2528. 

 Heavy Fluids, 2538. 

 Light Fluids, 2539. 

 Oils, 2530 and 2532. 

 Soap Leys, etc., 2540. 

 Spirits, 2493 to 2499. 

 Gay Lussac's, Richter's 



Tralle's, 2554. 



Photographic,2552 and 2553. 

 Sets of Three, 2543 and 2544. 

 Syke's, 2493 to 2497. 

 Twaddle's, 2554. 



Hygrometers, Alpine, 57 and 229. 

 Daniel's, 58. 



Dew Point, 59 and 2906. 

 Dyne's, 2906. 



Garden, 185. 



Mason's, 50 to 56. 



Regnault's Condensing Dew 



Point, 59. 

 Hypsometer, 85. 



Pocket, 86. 

 Tables for, 87. 



Illuminating Apparatus for Telescopes, 



1408. 



Inclined Planes, 2386 and 2387. 

 India-rubber Tubing, 2896 to 2898. 



Vulcanized in Sheets, 2900. 



Induction Coils for Blasting, 2145. 



Rhumkorff's, 2136, 2139 



to 2142. 



Induction Conductor, 1994. 

 Inhalers, 2597 and 2598. 



Chloroform, Snow's, 2598. 

 Inhaling Tubes, 2599. 

 Ink or Pencil JBows, 774 and 775. 

 Instruments, Altitude and Azimuth, 396. 

 Dissecting for Microscopes, 



1236 to 1244 

 Drawing, Half Sets of, 739 



to 744. 



Drawing, Sets of, 713 to 738. 

 Gauging, Sets of, 287 and 288. 

 Transit, 386 to 394. 

 Insulated Plates, 2129. 



Wire for Connecting, 2146- 

 Insulating Stools, 1966. 



Supports, 1958 and 1959. 

 Irregular Board, 2397. 

 Iron Bar Measure for Gauging, 292 and 293 

 Iron Gauges for Soap Works, 2304. 

 Scribing, 295 and 296. 



Jars, Gas, 2630 to 2639. 



Covers for, 2640. 



Trays for, 2642. 



Glass, for Hydrometers, 2756. 



Leyden, 1944. 

 Jordan's Ear Illuminator, 2569. 



K 



Kaleidoscope, 1818. 



Kater's Pocket Azimuth Compass, 450. 



Key or Spanner for Air-Pumps, 2222. 



Key's Fog Signals, 990. 



King's Barograph, 19. 



Knives, Corn, and Files, 2579 and 2580. 



