The INDEX.

Mars (2.) p. 155. k. 9&1.

< she celestial Matter wry subtile (2.) p. 221. n, 1243.

.- 'it does not move Bodies, p. 222. n. 1244.

The Quantities of Matter in Planets (2.) p. 231. n. 1255.The Medium of Light (1.) p. 7. n. 15.

Mercury pines in a Vacuum (2.) p. 11. n. 571. and fbi.The Planet Mercury (2.) p. 155. n. 958.

Meridians (2.) p. 181. n. 1077. p. 188. n. 1114,xi 16.

First Meridian, p. 189. n. 1120.

Meridian Line (2.) p. 186. n. 1101.

Microscope (2.) p. 74- n - 7 6 °-

magnifies small Objects, p. ibid. n. 761,

. __ it magnifies more when compounded, p. 76.

n. 765.

Milky Way, p. 284. n. 1199.

— - it is an Assemblage of Stars, p. ibid. n. 1200.

Mirrors or Looking-glasses plane ( 2.) p. 87. n. 799. and

sol.

— --- spherical and convex, p. 89. n. 806. and sol.

-- -spherical and concave, p. 90. n. 8x3. and sol.

-- —burning, p. 91. n. 814.

. - cstindric and conic, p. 117. n. 863.

The Phænomena of the Moon (2.) p. 174. n. 1035. and

sol.

Why it appears bigger near the Horizon, p. 67. n. 735.It turns round its Axis, p. 157. n. 970. p. 184. n. 1092.It always turns the fame Face towards the Earth, p. 184,n. 1092.

Eclipse of the Moon (2.) p. 176. n. 1047.

-- when it happens, ibid. n. 1049. 1051.

-- Partial, p. 177. n. 1052.

--- Total, ibid, ». 1053.

- Central, ibid. n, 1054.

The Gravity. of the Moon towards the Earth, p. 211.n. 1225.

U 4

The