726 



INDEX. 



397, 400, 409, 438, 443, 



444, 459, 473, 607, 609, 



610, 631. B. 1739, D. 



1804. 

 Rochfort, II. 250. 

 Rochon, I. 121, 11. 295, 



456, 4Sr. 

 Rock crystal, II. 290, 309, 



310. 

 Rockets, II. 146, 263. 

 Rod, II. 150. 

 Rods, I. Ill, PI. 9, 14, II. 



155, 181. Sounds of ro<is, 

 J. 384. 

 Rods suspended, II. 162. 

 Roeding, II. 370. 

 Roehl, II. 325, 356. 

 Roemer, I. 436, 477, 483, 



II. 558. B. 1644, D. 17 10. 

 Roesler, II. 346. 

 Rohault, II. 125. 

 Rohr, II. 105. 

 Roller, I. PI. 17. 

 Roller pump, I. 334, PI. 



23. 

 JRoUers, I. 213,11. 182, 200, 



204, 212. 



Rollin, II. 217. 



Rolling, I. PI. 2. 



Rolling clock, II. 191. 



Rolling figures, II. 24. 



Rolling press, II. 204. 



Roman buildings, 11. 175. 



Roman foot, II. 147. 



Roman money, II. 160. 



Roman ounce, II. 160. 



Romans, I. 1 18, 244. 



Roman year, I. 539. 



Rome, I. 700. 



Romieu, I, 406, 407, II. 

 544. 



Romrae, I. 364, II. 229, 



239,241. 

 Rood, II. 151. 

 Roof, I. 72, 169, PI. 5. II. 



42. 

 Roofs, I, PI. 13,11. 178. 



Room, 11. 537. 

 Root cutter, II. 208. 

 Rooting up trees, 11. 200. 

 Roots of equations, II. 114, 



146. 

 Hope and pulley, II. 166. 

 Rope crane, II. 198. 

 Rope making, I. 181, II. 



186. 

 Rope pump, I. 327, PI. 21. 



11. 251. 

 Ropes, 1. 183, 11. 168, 170, 



171, 178, 181, 186. 

 Ropes for towing, II. 243. 

 Ro»e, II. 414. 

 Rosenberg, II. 417. 

 Rosenthal, 11. 137, 391, 



447, 448. 

 Rosetta, I. 721. 

 Rosnier, I. 365, II. 256. 

 Rot, 11. 180. 

 Rotation, I. 42, 81, 85. 



Corrections. II. 52, 137. 



Corrections. 

 Rotation of balls, II. 260. 

 Rotation of billiard balls, 



1. PI. 5. 



Rotation of the earth, I. 



525, 702, II. 334, 341. 

 Rotation of the moon, I. 



511, 521. 

 Rotation of the planets, I. 



505, II. 333, 341, 372. 

 Rotation of the sun, I. 500, 

 Rotation of tubes, II. 386. 

 Rotation of stars, II. 331. 

 Rotationsof chords, II. 646. 

 Rotation with progression, 



II. 138. 

 Rotation with resistance, 



II. 138. 

 Rotatory motion, I. PI. 5, 



II. 182. 

 Rotatory power, I. 83, PI, 



2, II. 52, 137. 

 Rotatory power of a stream, 



H. 63, 238, 



Rotatory pump, I. 330, II. 

 250. 



Rotatory saw, II. 210. 



Rotolo, II. 162. 



Rotten wood, II. 292, 293. 



Rotterdam, II. 109. 



Roubo, II. 179, 202. 



Rouland, 11. 431, 447. 



Rouse, II. 457. 



Rousseau, II. 273, 506,567. 



Rowe, 11. 119. 



Rowing, I. 131, II. 165, 

 242. 



Rowning, II. 127. 



Roy, II. 148,155,921,362, 

 363, 367, 368, 390, 391, 

 393. 



Royal Institution, I. 251, 

 755, II. 676. Objects of 

 the Royal Institution, 1. 1 . 



Royal Society, I. 7, 248, 

 249, 749, II. 105, 671, 

 676. 



Roy's expansions of mer- 

 cury, II. 461. 



Rozier, II. 107, 109. 



R. S. Library of the Royal 

 Society. 



Rudder, I. 325. 



Rudders, I. 150, II. 241. 



Rude, II. 496. 



Rudiments of ancient ar- 

 chitecture, II. 172. 



Rudolph, I. 597. 



Rulers, I. 100. 



Rules, II. 144. 



Rules of philosophy, I. 

 16. 



Ruling, II. 143. 



Ruling machine, I. 119, II. 

 158. 



Rumford. Count Rumford, 

 I. 350, 364, 632, 633, 

 635, 652, 757, PI. 27, II. 

 112, 169, 261,294,520, 

 543, 623, 631. 



Running, I. J30,P1. 9. 



Rupert. Prince Rupert, 1. 



335. Prince Rupert's 



drops, I. 614. 

 Ruptur«, II. 168. 

 Rupture of a pillar, II. 



174. 

 Rush work, II. 188, 

 Russel, I. 534, II. 142, 



336. 

 Russia, II. 366, 451. 

 Russian stoves, II. 411. 

 Rust, II. 207. 

 Rutherford, I. 697. 

 Rutherford's therreoiceter, 



I. PI. 41. 

 Ruthcrforth, II. 126. 

 Ruts, II. 202, 204. 

 S. A. II. 110. 

 Sacks, II. 188. 

 Saddle, II. 203. 

 Saddlery, II. 203. 

 Safety valve, II. 259. 

 Sagittae, II. 25. 

 Sagittarius, I. 504. 

 Sail, I. PI. 22, II. 240. 

 Sailing carriages, II. 201. 

 Sailing chariots, II. 238. 

 Sailmaker's assistant, II. 



241. 

 Sails, II. 238, 241. 

 Saint Auban, II. 260. 

 Saint Fond, 11. 256. 

 Saint Lucia, II. 494. 

 Saint Paul's cathedral, I. 



165. 

 Saint Pierre, I. 601, II. 



128. 

 Saint Vincent, II. 494. 

 Sal ammoniac, II. 510. 

 Salinas, II. 272. 

 Salmon, II. 200, 272. 

 Salt marsh, II. 233. 

 SaltnesS; II. 479. 

 Saltpetre, II. 261. 

 Salts, II. 673. 

 Salt works, II. 411, 511. 

 Saluces, II. 261. 



