Part 103

Mercury, (planet) 83, 85, 114.

Mercury, or quicksilver, 16, 140, 141.

Meridians, 93.

Microscope, 200. single, 200. double, 200. solar, 202, 203.

Minerals, 12.

Minutes, 94.

Momentum, 38, 56.

Monsoons, 149.

Month, lunar, 108.

Moon, 78, 79, 80, 82, 85.

Moonlight, 162, 163.

Motion, 14, 32, 36. accelerated, 36. axis of, 48. centre of, 48, 55. compound, 46. curvilinear, 47, 49. diurnal, 78. perpetual, 35. retarded, 35. reflected, 43. uniform, 34.

Mirrors, 172. axis of, 176. burning, 177. concave, 174, 176, 209. convex, 174, 175. plane or flat, 172. reflection of, 173.

Neap tides, 116.

Nerves, 166. auditory, 151, 166. olfactory, 166. optic, 164, 166.

Night, 78.

Nodes, 110.

Octave, 156.

Odour, 13.

Opaque bodies, 157, 158.

Optics, 157.

Orbit, 86.

Pallas, 84.

Parabola, 51.

Parallel lines, 25.

Parallel of latitude, 94.

Pellucid bodies, 157.

Pencil of rays, 158.