INDEX. 127 



Magnetism, terrestrial, account of Professor Hansteen's discoveries 

 in, xiii. 432. Intensity of magnetic force in various parts of 

 the world, 434. Effect of earthquakes on, ib. 



< by percussion in iron and steel, experiments and 



observations on, xiv. 376 



I apparent, of metallic titanium, xvii. 129. Supposed 



effect of, on crystallization, 158. Thermo-magnetism, ib. 

 Influence of, on chronometers, 197, 365. Intensity, changes of, 

 in ships of war, 261. xix. 333. New effects of, 276. Theory 

 of, 317. xix. 122 

 of an iron shell, effects of, on the rate of chronome- 



ters, xviii. 34 



influence of copper, &c. on, xix. 147. Imparted to 



iron bodies by rotation, 263. Alteration of, in an iron plate, 

 occasioned by a rotation on its axis, 265. Developed by the 

 act of rotation; repetition of M. Arago's experiments on, 276. 

 On the mutual action of magnetic and unmagnetic bodies, 336 



Magnitude and distance, notions of, how far acquired by the sense 

 of touch, iii. 3 



Maio (Signor), notice of ancient MSS. discovered by, xii. 193 



Maize, analysis of, xi. 206 



properties of the zei'ne of, xii. 402 



M'Keever (Dr. T.)on the influence of solar light on the process 

 of combustion, xx. 387 



Malacolite,analysis of, xii. 329 



Malambo-bark, discovery of, i. 59. Account of its physical pro- 

 perties, 61. Chemical, 63. Observations on its leading prin- 

 ciples, 64 



Malays, of Batavia, character of, vi. 18 



Malformation of the heart, singular case of, i. 49 



Malic acid, the same as the sorbic, vi. 153 



MalloAv, flowers of, a test for alkali, xiv. 445 



Mammoth, remains of, discovered, v. 140 



found in Siberia, description of, viii. 95 



— . account of the remains of one found near Rochester, 



xi. 20 



