36 



INDEX OF TECHNICAL TERMS. 



Metonic cycle, a. 122. 

 Mineral alkali, b. 264. 

 Mineralogical axis, b. 537. 

 Minutes, a. 163. 

 Miocene, b. 529. 

 Mollusca, b. 47 S. 

 Moment of inertia, a. 356. 

 Momentum, a. 337, 338. 

 Moon's libration, a. 375. 

 Morphology, b. 469, 474. 

 Movable polarization, b. 105. 

 Multiple proportions (in Chemistry), 



b. 285. 

 Music of the spheres, a. 82. 

 Mysticism, a. 209, 211. 



Nadir, a. 184. 



Nebular hypothesis, b. 501. 



Neoplatonists, a. 207. 



Neutral axes, b. 81. 



Neutralization (in Chemistry), b. 263. 



Newton's rings, b. 77, 124. 



scale of color, b. 77. 

 Nitrous air, b. 273. 

 Nomenclature, b. 389. 

 Nominalists, a. 238. 

 Non-electrics, b. 194. 

 Numbers of the Pythagoreans, a. 82, 



216. 

 Nutation, a. 465. 

 Nycthemer, a. 159. 



Octaefceris, a. 121. 

 Octants, a. 180. 

 Oolite, 6. 529. 

 Optics, b. 51, &c. 

 Organical sciences, b. 435. 

 Organic molecules, b. 460 

 Organization, 6. 435. 

 Oscillation, Centre of, a. 356. 

 Outcrop (of strata), b. 512. 

 Oxide, b. 282. 

 Oxyd, 6. 282. 

 Oxygen, 6. 276 



Palaeontology, t. 519. 

 Palsetiological sciences, b. 499. 

 Parallactic instrument, a. 165. 

 Parallax, a. 159. 



Percussion, Centre of, a. 357. 

 Perfectihabia, a. 75. 

 Perigee, a. 146. 

 Perijove, a. 446. 

 Periodical colors, b. 93. 

 Phases of the moon, a. 134. 

 Philolaic tables, a. 304. 

 Phlogisticated air, b. 273. 

 Phlogiston, b. 268. 

 Phthongometer, 6. 47. 

 Physical optics, b. 52. 

 Piston, a. 346. 

 Plagihedral faces, b. 82. 

 Plane of maximum areas, b. 380. 

 Pleiocene, b. 529. 

 Plesiomorphous, b. 335. 

 Plumb line, a. 164. 

 Pneumatic trough, b. 273. 

 Poikilite, b. 530. 

 Polar decompositions, b. 293. 

 Polarization, 6. 72, 74. 



Circular, b. 82, 119. 



Elliptical, b. 122, 124. 



Movable, b. 105. 



Plane, 6. 120. 



of heat, b. 153. 

 Poles (voltaic), b. 298. 



" of maximum cold, b. 146. 

 Potential levers, a. 318. 

 Power and act, a. 74. 

 Precession of the equinoxes, a. 155. 

 Predicablcs, a. 205. 

 Predicaments, a. 206. 

 Preludes of epochs, a. 46. 

 Primary rocks, 6. 513. 

 Primitive rocks, b. 513. 

 Primum calidum, a. 77. 

 Principal plane (of a rhomb), b. 73. 

 Principle of least action, a. 380. 

 Prosthapheresis, a. 146. 

 Provinces (of plants and animals), b. 



562. 

 Prutenic tables, a. 270. 

 Pulses, b. 33. 

 Pyrites, b. 352. 



Quadrant, a. 164 

 Quadrivium, a. 199. 

 Quiddity, a. 234. 



