INDEX. 



709 



Impulse of fluids TI. 220. 



Impulse transmitted by an 

 elastic mediunv, 11. 68. 



Impulsion, IT. 136. 



Inanimate force, I. 90, II. 

 167. 



Inarre, II. 410. 



Ince, II. 179. 



Inch, II. 151. 



Inclination of strata, 11.354. 



Inclinations, II. 118. 



Inclinations of the plane- 

 tary orbits, I. 504. II. 

 340. 



Inclined float boards,II.236. 



Inclined plane, I. 42, 70, 

 PI. 4, 5, 17, II. 33, 42, 

 54. 



Inclined planes, II. 138, 

 197, 



Inclined surface, II. 138. 



Inclosures, II. 180. 



Incombustible houses, II. 

 17.5. 



Increase of the globe, II. 

 495. 



Increase of the sea, II. 496. 



Increments, II. 7, 119. 



Index, I. 99, II. Correc- 

 tions. 



Incomnnensnrable quanti- 

 ties, n. 14. 



Index of refraction, I. 412. 



Index ofrefractive density, 

 n. 70. 



Indian cycle, 11. 370. 



Indian ink, I. 95, II. 143. 



Indian measures, U. 148. 



Indians, I. 591. 



Indian weights, II. 160. 



Indian zodiac, II< 376. 



Indiction, II. 349. 



Indigo, II. 214. 



Indistinct vision, II. 310. 



Indivisibles, I. 36. 

 Induced electricity, I. 664. 

 II. 418. 



VOL. ir- 



Induction, I. 15, II. 124. 

 Induction, II. 664. 

 Inelastic bodies, I. 78. 

 Inertia, I. 33, 51, 614, II. 



130, 379. 

 Incvaporablc fluids, II. 397. 

 Infants, II. 518. 

 Inferior tides, I. 583. 

 Infinite, II. 557. 

 Infinite quantity, II. 119. 

 Infinites, I. 36, II. 119. 

 Infinite series, II. 116. 

 Infinity of the stars, II. 



330. 

 Iiifliiramable air, II. 263. 

 Inflammable bodies, I. 412. 

 Inflannnabtc vapours, II. 



259. 

 Inflammation, II. 290. 

 Inflecting atmosphere, II. 



632. 

 Inflection, II. 310,317, 543, 



629, 661. 

 Influence of light, II. 321. 

 Ingcnhousz, II. 112, 128, 



424, 432, 513. 

 Ingenhousz's electrical ma- 

 chine, II. 432. 

 Indian ink, I. 95. 

 Ink, I. 66. See correc- 

 tions. II. 143, 144. 

 Inkstand, II. 143. 

 Inlaid work, II. 179. 

 Inlaying, II. 143. 

 Inquiry into the effects of 



heat, II. 383. 

 Inscription of figures, II. 



118. 

 Insects, II. 311, 312, 382, 



458, 510, 518, 519, 620, 



678. 

 Insensibility of electricity, 



II. 424. 

 liistinct, I. 449. 

 Institutions de physique, II. 



126. 

 Inbtitut uatioual, II, 111. 



Instruments. Musical in- 

 struments, I. 397. Op- 

 tical instruments, I. 420. 



Instruments for observa- 

 tion, II. 349. 



Instruments of penetration, 

 II. 207. 



Instruments subservient to 

 music, II. 279. 



Instruments subservient to 

 seamanship, II. 244. 



Insulated stars, I. 494. 



Insulation, 11. 419. 



Integral calculus, 11. 119. 



Intensity of electricity, I. 

 683. 



Intensity of light, I. 420,11. 

 77. 



Intensity of sound, II. 265. 



Interception of light, 1. 409, 

 II. 294. 



Interception of sound, I. 

 376. 



Interest, II. 117. 



Interference of light, 1. 46 1, 

 II. 633,639,071. 



Intermediate spring, I. 193. 



Intermitting springs, I. 286. 



Internal reflection, II. 296, 

 030. 



Interpolations, II. 110,340. 



Ii.tcstines, II. 184. 



Introsusception, II. 510. 



Inundation, II. 370, 480. 



Inundations of large rivers, 

 I. 713. 



InvaUds, II. 181. 



Inversable chair, II. 201. 



Inversable coach, II. 201. 



Inverted images, II. 301. 



Inverted pump, I. 336. 



Inverted rainbow, II. 309. 



Inverted tide, I. 579. 



Invisible girl, .1. 376, II. 

 271. 



Invisible heat, I. 654, 406. 



Invisible rays, IL 296, 407. 



5 A 



Involute, II. 22. 



Involute of a circle, II. 55, 



122, 562. 

 Involutes of circles, I, PU 



15. 

 Ionian school, I. 237. 

 Ionic column, I. PI. 12. 

 Ireland, II. 451. 

 Iris, I. 447, 451, II. 311, 



530. 

 Iris for telescopes, II. 288. 

 Irish academy, II. HI. 

 Irish car, II. 202. 

 Iron, I. 152, 228, 244, 685, 



II. 48, 169, 266, 438, 



501, 509, 510. 

 Iron blocks, II. 177, 

 Iron bridges, II. 177. 

 Iron filings, I. 688, 693, 



PI. 41. 

 Ironmongery, II. 179, 207, 

 Iron roads, II. 204. 

 Iron wheelways, I. 218. 

 Irradiation, II. 310. 

 Irregular refraction, II. 301. 

 Irrigation, II. 235, 251, 264. 

 Irritability, II. 518. 

 Irritability of plants, II. 513. 

 Irritation of the nerves, II. 



427. 

 Ir. tr. II. 111. 

 Irvine, I. 650,051,750. 

 Island. New island, II. 



495, 498. 

 Isochronous curves, II. 133. 

 Isoperimotrical problems, 



II. 123. 

 Italian school, I. 237. 

 Italy, II. 450, 496. 

 Ivory, II. 179, 209, 509. 

 Izarn, 11. 501. 

 Jack, I. PI. 17,11.182, 198. 



Kitchen jack, I. 179, .II. 



181. 

 Jackal, II. 516. 

 Jack for pump rods, II. 



199. 



