INDEX. 



707 



Helioscope, II. S51, 



Hcliostate, I. 425. 



Hell, IT. 373. 



Ilellins, II. 113, 081. 



Hellmuth.II. 128,325, 326. 



Helshara, II. 120, 539. 



Helvetica acta, II. 108. 



Hemispherical counter- 

 poise, I. 208, II. 58. 



Ilemraer, II. 448, 486. 



Hemp, 1. 182, II. 185. 



Hemp for rigging, II. 241. 



Hcndon, H. 113. 



Henley, I. 682, PI. 40. 



Hennert, II. 249, 342, 387, 

 472. 



Henry the sixth, I. 245. 



Henzion, II. 256. 



Hcraclides, II. 377. 



Heraclitus, I. 744, 756. Fl. 

 506, B. C. 



Herbert, II. 379, 383, 391, 

 416, 417. 



Herculanexim, II. 493. 



Hercules, I. 497. 



Herder, II. 497. 



Herman, II. 456. 



Hermann, I. 250, 253, II. 



129. B. 1678, D. 1733. 

 Hermes, I. 403,- 590, II. 



566, 567. 

 Hero, 1. 188, 243, 253, 337, 

 353, 366, II. -196. Fl. 



130. B.C. 

 Herodotus, I. 338. 

 Hero's clepsydra, II. 245. 

 Hero's cupping instrument, 



I. PI. 94. 



Hero's fountain, I. PI. 23> 



II. 249. 



Herschel, I. 428, 429, 

 482, 456, 481, 490, 491 

 . . 494, 499, 501, 507, 

 509, 510, 511, 516, 603, 

 637, 638, 698, 754, PI. 

 31, 33, 39, II. 79, 282, 

 289, 291, 319, 326, 329,. 



406, 585, 609, 624, 631, 



648, 673, 676, 677, 680, 



681. 

 Ilertel, II. 286. 

 Herz,II. 128. 

 Hesiod, II, 214. 

 Hessian academy, II. 109. 

 Hessian bellows, I. 345. 

 Hessian pump, II. 217. 

 Hevelius, I. 598, 604, II. 



324, 335, 347. 

 Ilewson, II. 646. 

 Hides, II. 208. 

 Iliero, I. 240, 241, 352. 

 Iliggins, II. 175,321,410, 



411. 

 High water, I. 576. 

 High wheels, II. 201. 

 Hillary, 11. 383. 

 Hill raised, II. 498. 

 Hills, II. 476. 

 llindenburg, II. Ill, 114, 



254, 388. 

 Hindlpy,II. 145. 

 Hindoos, II. 349, 376. 

 Hinge, II. 179. 

 Uipparchus, I. 496, 506, 



519, 589, 593, 594, 604, 



II. 349. 

 Histoire de I'Academie 



Royale, II. 107. 

 Histoire de Vfeuve, II. 493. 

 History of acustics, II. 279. 

 History of astronomy, I. 



589. 

 History of astroBomy and 



geography, II. 376. 

 History of hydraulics and 



pneumatics, I. 352, II. 



263. 

 History of mathematics, II. 



124. 

 History of mechanics, I. 



236, II. 216. 

 History of music, I. 403. 

 History of optics, I. 472, 



II. 323. 



History of terrestrial phy- 

 sics, I. 742. 



Hoar frost, I. 711. 



Hobert, II. 128. 



Hodometers, II. 156. 



Hoe, II. 211. 



Hoell, I. PI. 23. 



Iloell's machine, I. 336. 



Hoesen, II. 283. 



Iloeseu's mirrors, 11. -406. 



Hoffmann, I. 637. 



Hoffmann, 11.283, 031. 



Ilofmann, II. 125. 



Hogshead, I. 124, II. 150, 

 151. 



Ilolden, II. 273. 



HoWer,II. 27^. 



Iloldsworth, II. 143. 



Holes, II. 213. 



IloUandse maatschappy te 

 Haerlem, II. 109. 



HoUmann, II. 111. 



Hollow bars, II. 175. 



Hollow beain-s, I. 140, II. 

 60. 



Hollow Kricks, II. t75» 



Hollow cylinders, II. 168. 



Hollow masts, I. 149. 



Holm, II. 474. 



Holstein, II. 498. 



Home, II. 519, 573, 586, 

 692, 600, 601, 671, 672, 

 678v 



Homer, II. 506. 



Homogeneous medium, I. 

 408. 



Hooey dew, II. 475. 



Hooke, I. 7, 100, 137, 160, 

 188, 190, 198, 248, 253, 

 268, 271, 335, 355, 356, 

 366, 385, 475 . . 477, 

 482, 483, 5Q4, 599, 604, 

 748, 749, 756, PI. 6, II. 

 107, 112, 124,218,264, 

 285, 317, 359, 376, 396, 

 014, 627, 629. B. 1635, 

 D. 1703. 



Hooke's counterpoise, I. 



311, PI. 19. 

 Hooke's joint, I. 173, PI. 



14, II. 182. 

 Hooke's lamps, II. 245. 

 Hooke's law, II. 221. 

 Hoop, I. 34, II. 180. 

 Hooper, II. 128,514. 

 Hope, I. 728. 

 Ilopson, II. 384. 

 Hop stalks, II. 218. 

 Horizon, I. PI. 35, 11. 354. 

 Horizontal moon, I. 454, 



PI. 30, II. 313. 

 Horizontal range, I. 39, 



PI. 2. 

 Horizontal refraction, I. 



441, II. 300, 301. 

 Horizontal scapement, I. 



PI. 16. 

 Horizontal surface, 1. 200. 

 Horizontal watch, I. 195. 

 Horn, I. 402, II. 187. 

 Horn plate work, II. 200. 

 Horrebow, II. 447. 

 Horrox, I. 544. 

 Horse, I. 132, II. 164, 



167, 279. Positions of a 



horse's legs, I. 48. 

 Horse hoe, II. 212. 

 Horse mill, IL 167. 

 Horse pump, II. 249. 

 Horses, I. 218, PI. 18, II. 



165, 181. 

 Horses falling, II. 218. 

 Ilorsley, II. 127. 

 Horticultural instruments,. 



H. 20. 

 Horticulture, II. 519. 

 Hosack, II. 591. 

 Hosiery, II. 187, 218. 

 Hospital. See L'Hospital. 

 Hothouses, II. 412. 

 Hot springs, II. 494. 

 Hour glasses, I. 188, IL 



196. 

 Houses, II. 17A 



