INDEX. 



?29 



Sky, I. 454, PI. 30,11.313. 

 Slate, II. 175, 209. 

 Slating, II. 179. 

 Sleep, II. 518. 

 Slicing tallow, 11.209. 

 Slicing turnips, II. 208, 209. 

 Slider pump, I. 334, PI. 



23. 

 Sliding rule, I. PI. 7. 

 Sling, I. 33, 226. 

 Slitting mill, I. 227, PI. 18. 



II. 208, 209, 218. 

 Sloughing, I. 730. 

 Sluice, I. PI. 21. 

 Sluice board, II. 199. 

 Sluice gates, II. 180. 

 Sluices, I. 313,11. 233. 

 Slusius, II. 114. 

 Small, II. 377. 

 Smeaton, I. 69, 79, 84, 



158, 160, 168, 207, 250, 

 . 253, 315, 323, 340, 361, 



366, PI. 11,11. 128, 167, 



233, 390, 391, 457. B. 



1724, D. 1792. 

 Smeaton's blocks, I. PI. 4. 

 Smelling of insects, II. 5 18. 

 Smith, I. 429, 478, 483, II. 



79, 272, 273, 280, 511, 



524, 541, 544, 551, 554, 



609 . .611.D. 1768. 

 Smith, II, 367. Pierce 



Smith, II. 601. 

 Smith's microscope, I. PI. 



28. 



Smith's work, II. 178. 



Smoke, I. 453, II. 258, 41 1, 



534, 553. 

 Smoke jack, 1. 324,11. 410, 



411. 

 Smoky chimnies, I. 346, II. 



410. 

 Snails, II. 312, 517. 

 Snellius, I. 474, 483, II. 



323, 363. B. 1591, D. 



1626. 

 Snow, I. 444, PI. 29, II. 

 VOL. II. 



30S, 306, 394, 420, 476, 



478, 479, 482. 

 Snow line, II. 452. 

 Snow plough, II. 212. 

 Snuff boxes, II. 180, 209. 

 .Snuff mills, II. 213. 

 Snuff press, II. 204. 

 Societa Italiana, II. 110. 

 Societas Palatina, II. 447. 

 Soridte d'agriculture du 



dcpartement de la Seine, 



II. 251. 

 Societe dc Lausanne, II. 



111. 

 Societfi philomatique, II. 



111. 

 Society for the encourage- 

 ment of arts, I. 250, II. 



110,218,520. 

 Socin, II. 416. 

 Soda, II. 403. 

 Soft iron, II. 403. 

 Softness, I. 629. 

 Soil, II. 515. 



Solar altitudes,ll. 349,3.56. 

 Solar and culinary heat, I. 



637. 

 Solar and lunar years, II. 



340. 

 Solar atmosphere, I. PI. 



31. 

 Solar clocks, II. 347, .374. 

 Solar cycle, II. 349. 

 Solar day, I. 537. 

 Solar light, II. 291, 322. 

 Solar microscope, I. 425, 



PI. 28, II. 284 . . 286, 



317. 

 Solar phosphori, I. 435, II. 



292, 323, 630. 

 Solar spots, II. 376. 

 Solar system, I. 499, PI. 32, 



II. 372. 

 Solar tides, I. 584. 

 Solar time, II. 347. 

 Soldering glass, II. 283. 

 Soldner, II. 398. 



Solid, II. 8. 

 Solid angle, II. 17. 

 Solidity, I. 627, II. 383. 

 Solid of greatest attraction, 



II. 339. 

 Solid of least resistance, II. 



226 . . 228. 

 Solid of revolution, II. 17. 

 Solids, I. 613, II. 123, 156, 



658. 

 Solomon, II. 480. 

 Solstice, II. 539,P1. 34, II. 



356. 

 •Solution of iron filings, I. 



69^1. 

 Solutions, IT. 403, 510. 

 Solway moss, II. 496. 

 Somnambulism, II. 518. 

 Son, II. 185. 

 Sonde, II. 151. 

 Somometer, II. 279. 

 Sonorous cavities, II. 537. 

 Sosigenes, I. 594, 604. 

 Sothic period, I. 590. 

 Sound, I. S67, 655, II. 65, 



222, 264, 409, 531, 607. 

 Sound from hydrogen gas, 



II. 267. 

 Sounding, II. 244. 

 Sound in gases, II. 265. 

 Sounding board, I. 656. 

 Sounding line, II. 156. 

 Sound in water, II. 271. 

 Sound in wood, II. 265. 

 Sound of lead, II. 383. 

 Sounds of chords, II. 549. 

 Sounds of cylinders, II. 



268. 

 Sounds of gases, II. 267. 

 Sounds of rods, I. 406. 

 Sources of heat, I. 631. 

 Sources of heat and cold, 



II. 385. 

 Sources of light, I. 434, II. 



290. 

 Sources of motion, I. 90, 



131, 164. 



Sources of sound, I. 378, 



II. 266. 

 Sous, II. 162. 

 South, I. 500. 

 South America, I. 57 1, II. 



447, 498. 

 Southern, II. 256, 672. 

 Southey, II. 501. 

 South pole, I. 687. 

 South Seas, II. 275. 

 Sowden, II. 456. 

 Sowing, II. 212. 

 Space, I. 20,489,11.8,117. 

 Spade, II. 166. 

 Spallanzani, 1. 750, 756, II. 



439, 497. B. 1729, D. 



1799. 

 Spark, I. 169, PI. 40, II. 



420. 

 Sparks from rubbing the . 



eye, II. 528. 

 Sparks of electricity, II. 



423. 

 Spasmodic action, II. 314. 

 Speaking trumpet, I. 375, 



PI. 25, II. 279. 

 Spear points, II. 481. 

 Specific gravities, 1. 3 10, II. 



59, 231, 382, 388, 503. 



Table of specific gravi- 

 ties, II. 503 . . 507. 

 Specific gravities ofgases.I. 



372. 

 .Specific gravity, II. 403, 



509, 510. 

 Specific gravity of air, 11^ 



221,471. 

 Specific gravity of men, II.' 



244. 

 Specific heat, II. 406, 508.. 

 Specimens of sounds, II; 



277, 278. -*. 



Spectacles, II. 315, 323. 

 Spectre, II. 314. 

 Spectrum, I. 438, PI. 29,^ 



II. 296, 321, 604, 637>: 



679. 



