INDEX OF TECHNICAL TERMS. 



xliii 



Nycthemer, a. 207 



Octaeteris, a. 139 

 Octants, a. 235 

 Oolite, c. 578 

 Optics, ft. 372 

 Organical sciences, c. 417 

 Organic molecules, c. 460 

 Organization, c. 417 

 Oscillation, center of, b. 80 

 Outcrop (of strata), c. 548 

 Oxide, c. 155 

 Oxyd, c. 155 

 Oxygen, c. 146 



Palaeontology, c. 560 

 Palaetiological sciences, c. 527 

 Parallactic instrument, a. 217 

 Parallax, a. 203 

 Percussion, center of, b. 82 

 Perfectihabia, a. 60 

 Perigee, a. 182 

 Perijove, ft. 235 

 Periodical colours, b. 439 

 Phases of the moon, a. 162 

 Philolaic tables, . 457 

 Phlogisticated air, c. 143 

 Phlogiston, c. 135 

 Phthongometer, b. 368 

 Physical optics, 6. 372 

 Piston, b. 64 

 Plagihedral faces, b. 424 

 Plane of maximum areas, b. 1 20 

 Pleiocene, c. 577 

 Plesiomorphous, c. 248 

 Pliocene, c. 577 

 Plumb line, a. 216 

 Pneumatic trough, c. 142 

 Poikilite, c. 578 _ 

 Polar decompositions, c. 176 

 Polarization, b. 406, 409 



circular, 6. 423. 482 



elliptical, b. 485, 488 



moveable, 6. 462 



plane, ft. 483 



of heat, 6. 545 



Poles (voltaic), c. 185 



of maximum cold, b. 533 



Potential levers, 6. 125 

 Power and act, a. 58 

 Precession of the equinoxes, fl. 1 99 

 Predicables, a. 288 

 Predicaments, a. 288 



Preludes of epochs, a. 12 



Primary rocks, c. 549 



Primitive rocks, c. 549 



Primum calidum, a. 64 



Principal plane (of a rhomb), 6. 407 



Principle of least action, b. 121 



Prosthaphaeresis, a. 184 



Provinces (of plants and animals), 



c. 621 



Prutenic tables, a. 402 

 Pulses, b. 343 

 Pyrites, c. 275 



Quadrant, a. 215 

 Quadrivium, a. 276 

 Quiddity, a. 338 



Quinary division (in Natural His- 

 tory), c. 388 

 Quintessence, a. 54 



Radiata, c. 492 

 Radiation, 6. 520 

 Rays, 6. 375 

 Realists, a. 347 

 Refraction, b. 376 



of heat, b. 548 



Remora, a. 261 



Resinous electricity, c. 12 



Rete mirabile, c. 466 



Retrograde motion of planets, a. 172 



Roman calendar, a. 143 



Rotatory vibrations, b. 362 



Rudolphine tables, a. 402, 454 



Saros, a. 166 



Scholastic philosophy, a. 332 



School philosophy, a. 18 



Science, a. 6 



Secondary rocks, c. 549 



mechanical sciences, b. 3 2 3 



Second law of motion, b. 37 

 Seconds, a. 215 

 Secular inequalities, b. 106 

 Segregation, c. 615 

 Seminal contagion, c. 457 



proportions, a. 67 



Sequels of epochs, a. 13 

 Silicides, c. 276 

 Silurian rocks, c. 578 

 Simples, c. 301 

 Sine, a. 244 

 Solar heat, b. 530 

 Solstitial points, a. 157 

 Solution of water in air, b. 561 

 Sothic period, a. 134 



