INDEX. 



7]1 



Lace, II. 188, 218. 



Lacepede, I. 750, II. 416. 



Lacondamine, II. 151, 358, 

 362, 303, 457. 



Liicroix, II. 114, 118, 119, 

 120. 



Ladder, II. 175. 



Laf;rtius, II. 216. 



Lafaille, I. 247. 



Lafond. See Sigaud. 



Lagrange, I. 7, 250, 287, 

 406, 604, 522, II. 110, 

 130, 224, 537, 539, 544, 

 546, 547, 548, 618. 



Laliire, I. 129, 249, 253, II. 

 307, 373, 524, 557, 558, 

 561. B. 1610, D. 1718. 



Laliirc's pump, I. 332, 348, 

 n. 23. 



Lake, I 579. 



Xake of Geneva, II. 480. 



Lakes, II. 451, 479, 498. 



Lakes of America, II. 307. 



Lalandc, I. 501, 540, 598, 

 PI. 33, II. 143, 150, 190, 

 214, 234, 325, 346, 371, 

 377, 381. 



Lallaraaiid^I. 750. 



Lamarck, II. 481. 



Lambert, I. 375, 406, 407, 

 480, 483, 491, 493, 526, 

 631, 637, 751, 756, II. 

 145, 280, 291, 295, 300, 

 314, 325, 387, 393, 404, 

 408, 473, 538, 681. B. 

 1728, D. 1777. 



Lambton, U. 362. 



Laiii<-therie, II. 110, 497. 



Laminating, II. 188. 

 Laminating machine,I. 222, 



II. 205. 

 Limp, I. PI. 21, IL 290,412. 

 Lampadius, 11.384,417,483. 

 Lampblack, II. 485. 

 Lamp furnace, II. 411. 

 Lamp micrometer, II. 290, 

 352. 



Lamp of Amiens, II. 245. 



Lamps, LSI 1,11. 245. 



Lampyris, II. 292. 



Lamy, II. 219. 



Land, L 571. 



Landaulet, II. 202. 



Land breezes, I. 704. 



Landen, I. 250, 353, IL 

 113,116,350.8. 1719, D. 

 1790. 



Landriani, II. 250,448,486. 



Lane, I. 683, PI. 40. 



Langenbuecher, II. 431. 



Limfjez, II. 170. 



Langlais, II. 263. 



Langsdoi f, I. 365, II. 11 1, 

 219, 225. 



Languedoc, II. 231, 496. 



Langwitli, II. 319,013,644. 



Lantern, II. 184, 196. 



La Peyrouse, II. 185. 



Laplace, I. 7, 60, 108, 110, 

 249, 250, 370, 407, 441, 

 460, 482, 505, 521, 522, 

 541, "565", 580,589,684, 

 652, 750, 754, 755, II. 

 130, 325, 363, 364, 873, 

 391, 393, 409, 466, 501, 

 COO . . 666, 669, 670. 



Laplatricre, II. 187, 188, 

 211. 



Larcher, II. 333. 



Larive. See Delarive. 



Larynx, I. PI. 26, II, 550. 



La Sevre, IL 384. 



Last, II. 151. 



Lasts, II. 189. 



Latent beat, 1. 652, II. 409. 



Lateral adhesion, I. 140, 

 627. 



Lateral cohesion, II. 174. 

 Lateral friction, IL 251. 

 Lateral friction of fluids, I. 



297, II. 222, 223. 

 Lateral vibrations of rods, 



II. 263. 

 Lathe, I. 228, II. 122, 209. 



Latitude, I. 536, 54S, II. 



364, 365. 

 Latitudes of stars, II. 334. 

 Latorre, II. 285. 

 Launching ships,ll. 172,240. 

 Laurie, I. PI. 24. 

 Laurie's bellows, II. 253. 

 Lausanne, II. 111. 

 Lavoisier, I. 634, 652, 750, 



II. 390, 408, 503, 508. 



B. 1743, D. 1794. 

 Law of aberration, II. 294. 

 Law of equilibrium, 11.45. 

 Law of interference, II. 



633. 

 Laws of gravitation, I. 515. 

 Laws of gravity, IL 338. 

 Laws of heat, II. 404. 

 Laws of mechanics, II. 140. 

 Laws of refraction, I. 413. 

 Lazowsky, II. 448. 

 Leach, II. 211, 234. 

 Lead, II. 383, 403, 509. 

 Leaden pipes, I. 317, IL 



205, 245. 

 ieague, II. 151. 

 Leaky, II. 369. 

 Least action, II.' 140. 

 Leather, II. 184, 189. 

 Leaves, I. 729, II. 513. 

 Lecat, II. 516. 

 Leccbi, II. 219, 224. 

 Lee, I. 244. 

 Leeuwenhock, IL 1)2,527, 



596, 599. 

 Leeuwenhoek's micro- 



scopes, II 285. 

 Lee way, I. 325, II. 240. 

 Legeudre, II. 149, 360. 

 Legentil, II. 292. 

 Legs, I. PI. 9. 

 Lehmann, II. 306, 492,496. 

 Lehrgebaeude dcr optik,Il. 



280. 

 Leibnitz, I. 79, 249, 368, 

 475, II. 112, 377. B. 

 1040, D. 1716. 



Leidenfrost, IT. 396. 

 Leipzigermagazin, II. 110. 

 Leiste, IL 254. 

 Lelyveld, II. 118. 

 Lemaire, II. 362. 

 I^moine, II. 217. 

 Lempe, II. 141. 

 Lemoniiier, II. 336, 370, 



437, 520. 

 Length of a pipe, II. 569. 

 Length of curves, II. 121. 

 Length of the pendulum, 



II. 146, 363. 

 Lenoir. IL 149, 150. 

 Lens, 1.416, IL 72. Crys- 

 talline lens, II. 311. 

 Lens of least aberration, II. 



281. 

 Lenses, I. 423, 472, PI. 27. 



II. 210, 281. Grinding 



lenses, I. 231. 

 Lenses not spherical, II. 



283, 284. 

 Leo, I. 504. 

 Leone, II. 492. 

 Leroy, II. 263, 365. 

 Lescailler, II. 239._ 

 Le Sags, II. 377, 510, 

 Lescmelier, II. 384. 

 Leslie, I. 372, 030, 649, 



710, 754, II. 49, 223, 



231, 384, 475, 520, 662. 

 Leslie's discoveries, II. 407. 

 Leslie's hygrometer, 11. 469. 

 Leslie's thermometer, I. PI. 



34. ■ 

 Lesparat, II. 148. • 

 Letherland, 1. 195. 

 Lettere fisicomttcorologi- 



che, IL 500. 

 Letterpress, I. 122. 

 Letters, II. 276. 

 LeucippuB, IL 744. 

 Leupold, I. 250, 253, II. 

 118, 125, 25'3, 282. D. 

 1727. 

 Lcutmann, II. 413. 



