INDEX. 



719 



Orbits of the secondary 



planets, II. 340. 

 Orders of arcliitecture, I. 



165. 

 Orders of plants, I. 732. 

 Ordinate of an ellipsis, II. 



24. 

 Ordnance, II. 263. 

 Ore, II. 213. 

 Organ, I. 402, 404, II. 275, 



554, 610. 

 Organic geometr\', II. 120. 

 Organ pipe, II. 569. 

 Organ pipes, I. 385, 401, 



402, PI. 26. n. 266, 275, 



537, 539. 

 Organs of the voice, II. 275. 

 Oriani, II. 300. 

 Orifices, II. 61. 

 Origine des fontaines, II. 



479. 

 Origines des inventions, II. 



217. 

 Orion, I. 497, II. 672. 

 Ornithorhynchus, II. 672. 

 Ornithorliynchus hystrix, 



II. 678. 

 Orreries, I. 507, II. 374. 

 Ortliographical projection, 



I. 116, PI. 8, II. 21. 

 Oscillation, II. 53, 137. 

 Oscillations, II. 194. 

 Oscillations of a system, II. 



139. 

 Oscillations of a thread, II. 



139. 

 Oscillations of floating bo- 

 dies, II. 220, 223. 

 Oscillations of fluids, I. 



287,11. 223. 

 Oscillations of the sea, II. 



343. 

 Oscillations on pulleys, II. 



138. 

 Osiris, I. 403, II. 566. 

 Ostrich, II. 311. 

 Otto, II. 367,496,4)8. 



Oulton, II. 249. 



Ounce, II. 161. 



Oval, II. 557. 



Oval dome, II. 176. 



Ovallathe,II. 122, 209. 



Ovarium, II. 517. 



Oven, II. 403. 



Ovens, 11.410,411. 



Overflowing lamp, I. PI. 21. 



Overflowing well, II. 246. 



Overflow of the sea, II. 490. 



Overshot wheel, 1.320, PI. 

 22, II. 236. 



Ovid, I. 237. 



Owl, II. 312. 



Oxen, II. 181. 



Oxidation, II. 424, 498. 



Oxidofiron, 11. 211. 



Oxygen, I. 434, II. 514. 



Oxygen gas, I. 634, II. 292, 

 509. 



Oyster shells, II. 293. 



Packing press, II. 204. 



Padlock, II, 180. 



Pain, II. 178. 



Painters, II. 217; 



Painting, I. 454, II. 142, 

 217, 323. 



Painting wood, II. 180.- 



Palatine academy, II, 109. 



Palatine society, II. 447. 



Palladio, I. 253, PI. 11, II. 

 172. B. 1508, D. 1580. 



Palladium, II. 323. 



Palladius, II. 245. 



Pallas, I. 508, 531, II. 334, 

 372, 497, 674, 676. 



Pallet, II. 560. See Cor- 

 rections. 



Palm, II. 153. 



Palmo, II. 154. 



Palpable characters, II.3 16. 



Pan, II. 154. 



Pane of glass, II. 294. 



PanciroUus, II. 217. 



Pangrapli, II. 144. 



Panorama, I. 455, 11. 314. 



Pantheon, I. PI. 12, II. 459. 

 Pantograph, I. 103, PI. 6, 



II. 144. 

 Pantomcter, II. 144. 

 Pantometrum Pauccianum, 



II. 156. 

 Paper, I. 98, 187, 244, II. 



143, 217, 218. 

 Paper hangings, II. 190. 

 Paper making, II. 190. 

 Paper mills, II. 190,213. 

 Papers on naval architec- 

 ture, II. 239. 

 Papier mach^, II. 157. 

 Papin, I. 345, II. 141, 24S, 



347, 253. 

 Papin's digester, II. 410. 

 Pappus, 1. 243, 253, II. 113. 



Fl. 388. 

 Papyrus, I. 98. 

 Parabola, I. 39, 375, PI. 2, 



II. 24. 

 Parabolas, I. PI. 10. 

 Parabolic glasses, II. 283. 

 Parabolic jet, I. 286. 

 Parabolic orbit, I. 522. 

 Parabolic path, II. 33. 

 Parachutes, I. 306, II. 256, 



263. 

 Paradox. Hydrostatic pa- 

 radox, I. 263. 

 Parafeu, II. 200. 

 Paragallo, II. 493. 

 Parallax, 1. 54 2, II. 329,555. 

 Parallax of a micrometer, 



II. 289. 

 Parallax of a spheroid, II. 



357. 

 Parallax of the sun, I. 544. 

 Parallel circle, II. 350. 

 Parallelepiped, II. 18. 

 Parallelepipeds, II. 19. 

 Parallel lines, II. 9, 12, 13, 



118, 158. 

 Parallel motion, I. PI. 14. 

 Parallelogram, I. 2,5, II. 13, 



IS. 



Parallel planes, II. 17. 

 Parallel rulers, I. 102. PI. 



14, II. 144. 

 Paralysis, II. 314. 

 Parajjet, II. 174. 

 Paraselenes, II. 303. 

 Paravolcan, II. 494. 

 Parchment, II. 143. 

 Pardies, I. 357, 366, 479, 



II. 118, 129. B. 1636, 



D. 1673. 

 Parent, I. 219,324,11. 129. 



B. 1666, D. 1716. 

 Parent's mill, I. 331. 

 Parhelia, I. 443, PI. 29, II. 



303. 

 Paris, I. 454, II. 360, 365. 

 Parisian academy, I. 249. 

 Park, II. 442. 

 Parker, I. 171, II. 175, 



ISO. 

 Parker's lens, II. 407. 

 Parkinson, II. 130, 498. 

 Parrot, If. 466. 

 Partial differences, II. 119. 

 Partial electricity, I. 661. 

 Partial reflection, I. 461, 



II. 584. 

 Particles of light, II. 320. 

 Particular geography, II. 



365. 

 Partridge, II. 605. 

 Pascal, I. 748, 756, II. 112, 



472, 558. B. 1623, D. 



1662. 

 Pasigraphy, II. 143. 

 Pasquich, II. 130. 

 Passage, II. 562. 

 Passage of heat, II. 405. 

 Passive strength, I. 93, PI. 



11, II. 168, 169. 

 Patent pipes, II. 205. 

 Paternoster work, I. 335. 

 Path of light, II. 299, 321. 

 Path of the centre of gra- 

 vity, I. PI. 3. 

 Path ofthesun, I. 595. 



