518 



INDEX. 



Maximum squares, 68. Note 136. 



point of heat in solar spectrum, 



247. 



Mayer, M., his catalogue of stars, 418. 

 Mean time, 93. 



distance, 10. Note 41. 



motion, 11. Notes 43, 45. 



longitude, 11. Note 47. 



motions and major axes, their con- 

 stancy, 22. 



motions of Jupiter and Saturn, law 



of, 29. 



motions of Venus and the earth, 



30. 



motions of Jupiter's satellites, law 



of, 34. 



Measures, standards of, 100. 

 Melloni, M., his experiments on the i 

 transmission of caloric, 241 et seq. On ' 

 the point of maximum heat on the ! 

 solar spectrum, 247. 

 Mercury, the planet, rotation of, 74. 



, climate of, 275. 



Meridian, 53. 



, mensuration of, 53. Note 124. 



, form of, 54. 



, quadrant of, 101. 



Messier, M., on Lexel's comet, 388. 

 Was the first who observed Encke's 

 comet, 393. 



Metals, dilatation of, 256. 

 Meteorites, 446. 



Meteors and shooting stars, 447. 

 Metre, a French measure, 100. 

 Mica, its action, on light, 209, 210. 

 Milky Way, 62, 413 et seq. 

 Mines, temperature of, 277- 

 Minor axis of an ellipse, 6. Note 24. 

 Mirage, 175. 

 Miraldi, M., discovers the rotation of 



Jupiter's fourth satellite, 79. 

 Mitscherlich, Professor, on crystalliza- 

 tion, and the effect of heat on crys- 

 talline bodies, 124. His theory of 

 isomorphism, 126. On the expansion 

 of crystalline bodies, 258. 

 Molecular attraction, 114. 

 Molecules, or ultimate particles, 120. 

 Moll, Professor, his temporary magnets, 



359. 

 Momentum of the planets, 14. Note 



Monocotyledonous plants, 305. 



Monsoons, 138. 



Moon, theory of the, 39. 



.periodic and secular perturbation 



of, 40 et seq. 



, action of planets on, 41. 



, disturbs her own motion, 41. 



, acceleration of, 43. 



, periods of her secular inequalities, 



43. 



, mean anomaly of, 43. Note 106. 



, form of, 77- 



, mass of, 64. 



, rotation of, 77. 



, libration of, 78. 



, constitution of, 78. 



, light of, 274. 



, atmosphere of, 273. 



, phases of, 45. 



, eclipses of, 45. 



, orbit of, 39. 



, nutation of, 44. 



and earth's reciprocal attraction, 6. 



Moon's southing, 108. Note 155. 



Moorcroft, Mr., his botanical observa- 

 tions, 303. 



Moser's discoveries, 268. 



Mosotti, Professor, his theory, 115 et 

 seq. 



Motion, mean, 11. Notes 43, 45. 



, true, 11. Note 44. 



of Solar System, 8. 



of translation and rotation, 8. 



of solar perigee, 97- 



of lunar perigee and nodes, 43. 



of ether, 401. 



Mundy, Captain, his observations on 

 mirage, 175. 



Musical sounds, 146. 



instruments, 159 et seq. 



strings, vibrations of, 156 et seq. 



Note 176. 



N. 



Nature, laws of, 452. 

 Nebulae, 433. 



:, forms of, 434, 435. 



, stellar and planetary, 433, 437. 



, constitution of, 434. 



distribution of, 434, 441. 



