L.

La Condamine, 477.

Labor organizations, 11.

Labor, how affected by inventions; reducing, and increasing, 152, 153, 162, 163, 293, 308, 380, 381, 460.

Lace making, 306.

Laconium, 202.

Ladd electric machine, 133.

La Hire, 167, 170.

Laird, John, 440, 443.

Lallement, P. (See Bicycle.)

Lamps and lamp lighting, 359, 450.

Lancaster, cannon, 263.

Land reclamation, 107.

Lane, 1828, 37.

Lane-Fox light, 137.

Langen and Otto. (See Gas Engine.)

Langley, Prof., 4.

L’Hommedieu, 348.

Lapping-cotton, 299, 300.

Lasts, making of, 344, 345.

Lathes, 241-243, 340, 345, 349; for turning irregular forms of wood, 344.

Lattice work bridges, 103.

Laundry, 335.

Lavoisier, 58, 60, 63.

Lawn mowers, 40.

Lazy tongs mechanism, 160.

Le Bon, 1801, 185, 452.

Leaching, 236.

Lead, 219. (See Metallurgy.)

Leather, 361-372.

Leeuwenhoek of Holland, 65.

Leeu, 280.

Leckie, 41.

Le Conte, 63.

Lefaucheux, M., 267.

Leibnitz, 183.

Lenoir, 189.

Lesage, 121.

Lescatello, 1662, 24.

Leyden jar, 114.

Libavius, 58.

Liebig, 64.

Lieberkulm, Dr., 409.

Light, 2.

Lighting. (See Lamps and Gas.)

Light Houses, illumination, 105, 410.

Linotype, 288, 289, 290.

Linville bridge, 103.

Lippersheim, 409.

Liquid air, 216, 217.

Livingstone, Dr., 221.

Livingston, Robt., 84, 85.

Lixiviation, 236.

Locks, 420-427.

Locomotives, 82, 83, 84, 88.

Looms, 293, 297, 302. (See Textiles.)

Loomis, Mahlen, 150.

“London Engineering,” 288.

London exhibition, 1851, 470.

London Times, 283, 285.

Lontin regulator, 137.

Lost arts, 219.

Louis XI., XIV., 254, 255.

Lowell, Francis C., 298.

Lowe, T. S. C., gas, 454, 455.

Lubricants, 237.

Lyall, James, 306.

Lyttleton, 442.