INDEX, 



703 



Fontaine, II. 557. 

 Fontana, II. 112, S12, 463, 



512. 

 Fontenelle, I. 249, 532, II, 



217,344. 

 Food of plants, II. 515. 

 Foot, 1. 111,11. 150. 

 Foramen of the retina, II. 



311. 

 Force, 1. 36, 33, 79, 11. 28; 

 129, 131, 139, 164. Acce- 

 lerating force,I. 27. Cen- 

 trifugal force, I. 35. Defi- 

 nition offeree, I. 27. De- 

 flective force, I. 33. Re- 

 gulation of force, I 91. 

 Force of electricity, I. 134. 

 Force of freezing water, II. 



379. 

 Force of gunpowder, XL 



260. 

 Force of horses, II. 167. 

 Force of light, II. 294,618. 

 Force of machines, II, 141. 

 Force of magnetism, 1. 134. 

 Force of mules, II. 167. 

 Force of steam, II. 133. 

 Force of water, II. 236. 

 Force of wind, II. 457. 

 Forcer for a pump, II. 251. 

 Forces, II. 377. Reciprocal 

 forces, II. 37. Regula- 

 tion of hydraulic forces, 

 I. 316. 

 Forcing pump, I. 332, 353, 



PI. 23, II. 250. 

 Fordyce, 11.513,518. 

 Forest, II. 498. 

 Forfait,!!. 234. 

 Forge, II. 205. 

 Forge hammer, I. PI. 18. 

 Forges, I. 224, II. 252. 

 Forging, I. 142. 

 Forkel, II. 264. 

 Form of tlie earth, II. 374. 

 Form of the sky, I. 454. 

 Forms of columns, II. 173. 



Forms of the planets, I. 



518. 

 Formula fur the elasticity 



of steam, II. 398. 

 Forrest, II. 455. 

 Forster, II. 366. 

 Forsyth, I. 730, II. 519. 

 Fortification, II. 260. 

 Fossil bones, II. 497. 

 Fossils, I. 720, II. 496. 

 Fossombroni, II. 146. 

 Fougeroux, II. 179, 180, 



207. 

 Founderies, II. 252. 

 Foundcry, II. 157. 

 Fountain of Hero, II. 337. 

 Fountains, II. 245, 247. 

 Foureroy, I. 753, It, 179, 



675, 678. 

 Fournier, If. 158. 

 Fowl, II. 279. 

 Fowler, II. 427. 

 Fraction, II. 1. 

 Fractions, II. 114. 

 Fracture, I. 135, 143, 146, 



II. 169. 

 Fracture from beat, I. 



643. 

 Fracture of a pillar, II. 174. 

 Fragment ueber die geogo- 



nie, II. 497. 

 Frame for rectilinear mo- 

 tion, I. PI. 14, II. 183. 

 Frame saw, I. PI. 4. 

 Frame work, II. 182. 

 Franc, I. 124, II. 102. 

 France, II. 365. 

 Francoeur, II. 130. 

 Franf ois de Neufchatcau, 



11.213. 

 Franklin, I. 658, 715, 750, 

 754, 756, II. 112, 280, 

 410. B. 1706, D. 1791. 

 Franklin's experiment on 



oscillations, 11. 223. 

 Frederic, I. 189, 596. 

 Freestone, II. 509. 



F reezing, 1. 642, 699, 11. 



379, 394. 

 Freezing mixtures, II. 410. 

 Freezing of acids, II. 395. 

 Freezing of water in pipes, 



II. 246. 

 Freeiing water, II. 386. 

 French calendar, II. 349. 

 French measures, I. Ill, 



II. 151. 

 French weiglits, I. 124, II. 



160, 161. 

 Fresco, 1. 96. 

 Fr^zier, I. 176. 

 Friction, I, 93, 152, 632, 

 667, II. 134, 137, 138, 

 169, 176, 200, 293, 383, 

 385, 414, 679. Avoiding 

 friction, I. 203, 212. 

 Friction of a pallet, II. 



560. 

 Friction of fluids, I. 292, 



PI. 20, 21, II. 61, 226. 

 Friction of ice, I. 653. 

 Friction of scaperaents, I. 



195. See corrections. 

 Friction of sluices, I. 314. 

 Friction of water, II. 227. 

 Friction of wheelwork, II. 



55, 184. 

 Friction quadrant, 11. 200. 

 Friction wheels, I. 213, PI. 



14, 18, II. 200. 

 Frigid zone, I. 570. 

 Frigorific experiments, II. 



385. 

 Fringes, II. 189, 641. 

 Fringes of colours, I. 466, 



11. 316, 639. 

 Fringes of Griinaldi, 11.640- 

 Frisi, I. 250, II. 130, 234, 



325, 338, 359. 

 Fritsch, 11. 303, 446. 

 rrug,II. 312. 

 Iroidour, II. 234. 

 Fromantil, II. 216. 

 FroQtinus, II. 224. 



Front view of a tekscope, 



II. 287. 

 Frosts, II. 451, 45?. 

 Fructification, II. 514. 

 Fry. II. 144. 

 Fuel, 11. 385, 410. 

 Fulling, I. 186,11. 188. 

 Fulminating mercury, IT. 



262. 

 Fulton, II. 234. 

 Funccius, II. 264. 

 Functions of the eye, II. 



312. 

 Funk, 11.127,264,366. 

 Funke, II. 326. 

 Funnel, II. 222. 

 Fur, II. 190. 

 Furiong, II. 150. 

 Furnaces, I. 346, II. 410 



. . 412. 

 Fnrze, 11. 233. 

 Fusee of a watch, 1. 192, PI 



15, 16, II. 193. 

 Fusorius, I. 246, 253. Fl. 



1450. 

 Fuss, II. 287. 

 Fust, I. -246, 253. 

 Fustians, II. 218. 

 Gabler, II. 127, 437. 

 Gaertner,II. 511. 

 Gage for wheels, 11. 181. 

 G.^ges for air pumps, I. 



341, PI. 22. 

 G.iilenreuth, II. 497. 

 Gi»<en, I. 410, II. 279. 

 Galilean telescope, I: 428, 



PI. 28, II. 78. 

 Galileo, I. 31, 39, 44, 192,. 



247, 248, 253, 274, 354, 



366, 405,407,474, 48.1, 



598, 004, II. 112, 558, 



610. 1M.562,D. 1642. 

 Galley, II. 242. 

 Gallitzin, II. 416. 

 Gallon, I. Ill, II. i:0, 



151. 

 Galvani, 1.67?, 752, 753, 



