L.

Lake Timsah, 260.

Lathe at Woolwich, 198.

Lathe, Blanchard, 96. screw-cutting, 87.

Lap of slide-valve, 9.

Lebel rifle, 188.

Lens, formation of image by, 616. in steps, 600. photographic, 616.

Lepidosiren, 685.

LETTERPRESS PRINTING, 306.

Leyden jar, 490. discharge, 538.

LIGHT, 380. electric, 497. invisible, 383.

LIGHTHOUSES, 593.

Limiting angle, 399.

Link motion, 16.

Linotype, the, 645.

Lithium, 425.

LITHOGRAPHY, 636.

Liverpool and Manchester Railway, 14.

Lock-gates, 267.

Locks in Manchester Ship Canal, 264, 266.

LOCOMOTIVE, THE, 14. balancing of, 20. compound, 18.

Lodge, Professor O., 540.