733 



INDEX. 



Polypus, II. 516. 

 Pompeii, II. 493. 

 Poncclet, II. 489. 

 Pondicherry, II. 301. 

 Ponds, II. 480. 

 Pont Notre Dame, II. 



249. 

 Poppe, II. 217. 

 Population of England, II. 



36T. 

 Porcelain, II. 1,57, 206. 

 Porcelain thermometer, IT. 



388. 

 Pores, I. 609,11.379. 

 Porisms, II. 118. 

 Porosity, 1. 459. 

 Porta, II. 124. 

 Portable observatory, II. 



353. 

 Portclumiire, II. 283. 

 Porter cask, II. 233. 

 Porterfield, I. 452, 478, 



433, II. 311, 523 . . 



525, 573, 575, 592, 



603. 

 Porters,1. 132,210, PI. 17, 



II. 166. 

 Portfolios, II. 143. 

 Port of London, 11. 233. 

 Port of Toulon, II. 199. 

 Positive electricity, I. 661. 

 Post chaises. It. 203. 

 Postulates, II. 9, 10, 557. 

 Potash, II. 403, 509. 

 Potatoe, II. 292. 

 Potatoe bread, II. 519. 

 Potatoe cutter, II. 208. 

 Potatoe mill, II. 214. 

 Pottery,!. 223,11.206,214, 



918. 

 Pouchet, II. 447. 

 Pound, I. 124, II. 161. 

 Pounding, II. 214. 

 Poupart, II. 601. 

 Powder, II. 259. 

 Powder horn, II. 262. 

 Powder magazine, II. 485. 



Powdermill, 1. 232, 11.813. 



Powder proof, I. 134, II. 

 259, 265. 



Powder thrown on glass, 

 II. 419. 



Power, II. 124. Mecha- 

 nical power, I. 321. 



Powers, II. 4. 



Powers and products, II. 



lis. 



Pownall, II. 459. 

 Practical astronomy, 1. 536. 



11. 346. 

 Practical mechanics, II. 



141. 

 Prange, II. 142, 314. 

 Preceptor, II. 110. 

 Precession of the equinoxes, 



I. 505,519,11.341,349, 

 373, 374. 



Preliminary mechanics, II. 

 142. 



Premiums of the Society of 

 Arts, 11. 218, 204. 



Preparation of food, II. 

 411. 



PreparHtion of raw mate- 

 rials, II. 185. 



Preparations of vegetables, 



II. 5J2. 

 Preponderance, I. PI. 5, 



6, n. 54. 

 Presbyopic sight, I. 452. 

 Presensations of animals, 



II. 448. 

 Preservation from light- 

 ning, II. 485. 

 Preservation of ships and 



their crews, II. 243. 

 Preservation of wood, II. 



180. 

 Preserving fresh water, II. 



481. 

 President of the ft. S. II. 



672. 

 Press. Bramah's press, I. 



263, PI. 23. 



Presses, I. 220, 22?, II. 



304. 

 Pressure, I. 59, II. 37, 134. 



Hydraulic pressure, II. 



62. 

 Pressure engine, II. 251. 

 Pressure of a fluid, I. 261. 

 Pressure of earth, I. 161, 



II. 173, 232. 

 Pressure of fluids, I. PI. 19, 



II. 58, 222. 

 Pressure of running water, 



II. 223. 

 Pressure of the atmosphere, 



I. 273. 

 Pressure of the air, EI. 



220. 

 Pressure of threads, II. 41. 

 Pressure of water, II. 255. 

 Pressure on a pivot, II. 



133, 139. 

 Provost, I. 638, 686, 698 



. . 700, 754, II. 406, 



438, 681, 682. B. Pre- 



vost, I. 709. 

 Price, II. 117. 

 Priestley, I. 480, 751, II. 



127, 157, 217, 280, 416, 



429. B. 1733, D. 1804. 

 Primary mountains, I. 574. 

 Prime number, II. 349. 

 Primes, II. 116. 

 Principle of motion, II. 



140. 

 Principles of mechanics, II. 



137, 140. 

 Pringle, II. 112, 500. 

 Printer's grammar, II. 158. 

 Printing, I. 93, 118, -121, 



246, II. 158, 217. 

 Printing from stones, I. 



221. 

 Printing press, 1.22 1,11.204. 

 Printing stuffs, II. 188. 

 Prints, II. 142. 

 Prism, I. 414, 416,438, PI. 



56, 27, II. 17. 



Prismatic micrometer, II. 



«89, 290. 

 Prismatic spectrum, I. PI, 



29, II. 679. 

 Prisms, II. 19, 20. 

 Prize for heat and light, II. 



520. 

 Prize respecting heat, II. 



384. 

 Proclus, I. 213, 253, II. 



485. 

 Procyon, I. 497. 

 Product, II. a. 

 Production of cold, II. 



411. 

 Progressions, II. 4. 

 Progressive motion, I. 129. 

 Progressive motion of light, 



II. 294. 

 Projectiles, I. 33, 37, 286, 



PI. 2, II. 32, 132. 

 Projectiles from the moon, 



II. 341. 

 Projectiles with resistance, 



II. 226. 

 Projection of a knife from a 



lump of snow, II. 394. 

 Projection of a picture, II. 



21. 

 Projection of a Sphere, I. 



117, PI. 8. 

 Projection of eclipses, II. 



346. 

 Projection of light, I. 



459. 

 Projections, II. 374. 

 Projections of areas, II. 



118. 

 Projections of the sphere, 



II. 374. 

 Projections of the stars, II. 



328. 

 Prony, I. 36.'?, II. 114, 149, 



219,236,360,398. 

 Proofs, I. 644. 

 Propagation of heat in 



fluids. II. 405. 



