Hackle............................................ i 803 Hackling machine.................................. i 804 Hammer, drop...................................... ii 85 Hammer, gold-beater's............................. ii 59 Hammer, miner's................................... ii 421 Hammer, pneumatic................................. ii 88 Hammering......................................... i 820 Hammers, Hand..................................... ii 79 Hammers, piano.................................... ii 540 Hammers, Power.................................... ii 85 Hammers, Steam, Direct-acting..................... ii 88 Hammers, stone.................................... ii 820 Hammers, trip..................................... ii 88 Hand-car..................................... ii 344, 655 Hanger............................................ ii 97 Hardening machine (leather)....................... ii 285 Hardening metals.................................. ii 863 Harmonium......................................... ii 511 Harness, loom..................................... ii 352 Harrows........................................... i 10 Harvesters........................................ i 19 Hat-making Machinery.............................. ii 99 Hay-fork.......................................... i 26 Hay-loader........................................ i 26 Hay-rake.......................................... i 25 Hay-sweep......................................... i 25 Hay-tedder........................................ i 23 Head (barrel) machinery........................... i 122 Header............................................ ii 883 Heading........................................... i 321 Heading machine (cartridge)....................... i 328 Heat, distribution of in boiler................... i 158 Heat, equivalent of............................... i 516 Heat-engines...................................... i 637 Heat utilized in furnace.......................... i 864 Heater, feed-water................................ i 175 Heating apparatus, designing...................... ii 112 Heating by Steam and Hot Water.................... ii 110 Heck-box.......................................... i 815 Heddle............................................ ii 352 Heel-burnishing machine........................... ii 762 Heel-tool......................................... ii 263 Heel-trimmer...................................... ii 761 Hemmer............................................ ii 750 Hob............................................... ii 266 Hide-mill......................................... ii 282 Hide-reel......................................... ii 282 Hoist, blast-furnace.............................. i 872 Hoist, mining..................................... ii 423 Hoisting engines.................................. i 643 Holder, slotting-machine tool..................... ii 780 Holland, drainage of.............................. i 467 Hollander......................................... ii 521 Hook, ice......................................... ii 129 Hook, safety...................................... ii 423 Hopper-boy........................................ ii 395 Horse-Power................................ ii 117; i 637 Horse-power, strength of.......................... i 81 Horse-shoe forging machine........................ i 833 Hose, India-rubber................................ i 150 Hot blast......................................... i 865 House-drainage.................................... i 470 Housing........................................... i 323 Howitzers......................................... ii 485 Hullers, Coffee and Rice.......................... ii 119 Hulling machine, clover........................... i 29 Human strength.................................... i 82 Hurdy-gurdy....................................... ii 443 Hydraulic accumulator............................. i 1 Hydraulic brake................................... i 219 Hydraulic capstan................................. i 312 Hydraulic cement.................................. i 378 Hydraulic crane................................... i 420 Hydraulic derrick................................. ii 443 Hydraulic engine. See ENGINES, WATER-PRESSURE Hydraulic forging................................. i 835 Hydraulic foundations............................. i 837 Hydraulic jack.................................... ii 206 Hydraulic lamp.................................... ii 230 Hydraulic main.................................... i 914 Hydraulic mining.................................. ii 434 Hydraulic press................................... ii 564 Hydraulic punching machine........................ ii 629 Hydraulic ram..................................... ii 664 Hydraulic riveting machine........................ ii 673 Hydraulic screw dock.............................. i 462 Hydrodynamics..................................... ii 120 Hydro-electric machine............................ i 555 Hydrometer, or Areometer...................... ii 122, 71 Hydrostatics...................................... ii 123 Hypocycloid....................................... ii 17
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