369 



and the opposite state of 

 man in the aggregate, 67. 

 Advantages conferred on, 

 by the augmentation of 

 physical resources, 68. Ad- 

 vantages from intellectual 

 resources, 69. 



Mariotte, his law of equili- 

 brium of an elastic fluid 

 recently verified by the 

 Royal Academy of Paris, 

 231, His difference be- 

 tween solar and other heat, 

 315. 



Matter, indestructibility of; 

 Divided by grinding, 40. 

 By fire, 41. Dilated by 

 heat, 1 93. Inertia of, 202. 

 Polarity of, one of the 

 ultimate phenomena to 

 which the analysis of na- 

 ture leads us, 245. In- 

 herent activity of, 297. 

 Causes of the polarity of, 

 299. Imponderable forms 

 of, 310. 



Measure, the standard, diffi- 

 culty of preserving it unal- 

 tered, 128. How to be as- 

 sisted in measurement, 1 29. 

 Our conclusions from, 

 should be conditional, 130. 



Menai Bridge, weight and 

 height of, 60. 



Mechanics, practical, 63. 



Metre, the French, 126. 



Microscopes, power of, 191. 



Millstones, method of making 

 in France, 48. 



Mind, its transition from the 

 little to the great, and vice 

 versa, illustrated, 172. 



Mineralogy unknown to the 

 ancients, 79. Prejudiced 

 by the rage for nomencla- 

 ture, 139. Benefited by 



the progress of chemical 

 analysis, 293. 



Minerals, simple, apparent 

 paucity of, 294. Difficulty 

 in classing them, 295. 



Mitscherlich, his law of iso- 

 morphism, 170. His ex- 

 periments on the expansion 

 of substances by heat, 243. 



Motion, 87. Simplicity and 

 precision of the laws of, 

 179. 



Nature, laws of, 37. Immu- 

 tability of, 42. Harmony 

 of, and advantage of study- 

 ing them, 43. Prove the im- 

 possibility of attaining the 

 declared object of the al- 

 chemist. How they serve 

 mankind generally, 44. 

 Illustrated by mining, 45. 

 Economy derived from a 

 knowledge of, 65. How 

 to be regarded, 100, 101. 



Nature, objects of, an enumer- 

 ation and nomenclature of, 

 useful in the study of, 

 135. Mechanism of, on 

 too large or too small a 

 scale to be immediately 

 cognisable by our senses, 

 191. 



Newton, his proof of Gali- 

 leo's laws of gravitation by 

 an experiment with a hol- 

 low glass pendulum, 160. 

 His foundation to hydrody- 

 namical science, 181, Fixes 

 the division between statics 

 and dynamics, 223. His 

 investigation of the law of 

 equilibrium of elastic fluids, 

 231. His law of hydro- 

 statics, 232. His founda- 

 tion of hydrodynamics, 256. 



