696 



INDtXi 



Damaged ships, 11. 24S. 

 Damascus sword blades, If. 



207. 

 Damen.II. 478. 

 Dancing, H. 563. 

 Danske selskab, 11. 108. 

 Dante, 1.746.3.1265. D. 



1321. 

 Danzig. Society «t Danzig, 



n. 108. 

 Darcy, II. 130, 260. 

 Dark disc micrometer, II. 



352. 

 Darkness, 11.474. 

 Dark rays, II. 647. 

 Darrac, II. C77. 

 Darwin, II. 324. R. Darwin, 



I. 481,11. 515,518. 

 Dasymeler, II. 462. 

 Dates, II. 217. 

 Dati, II. 558. 

 Caubenton, II. 750, 756. B. 



1716. D. 1790. 

 Daval, II. 6*3. 

 Davies, II. 503. 

 Da Vinci. See Vinci. 

 Davis, II. 114. 

 . Davison, II. 114. 



Davis's quadrant, II. 350. 



Davy, I. 639, 653, 678, 

 681,720,752,753,11.623. 



Dawes, II. 148. 



Day, I. 525, II. 344. 



Dead beat scKpement, I. 

 195. PI. 16, II. 193. 



Dead water, I. 304, PI. 21. 



Deaf, II. 278. 



Deafness, 11. 271, 430, 67 1. 



Deal, II. 86. 



Debility of sight, II. 316. 



Debrosses, II. 275. 



Decade, II. 111. 



Decagramme, II. 162. 



Decametre, II. 152. 



Decalitre, II. ,247. 



DeCaus,II. 247. 



Decay of lightj 11; 394. 



Decay of sound, I. 376, II. 



266,539. • 

 Deception of sight, II. 314. 

 Dechales, II. 119, 224. 

 Decharges, II. 264. 

 Decigramme, II. 162. 

 Decilitre, 11. 152. 

 Decimal arithmetic, II. 4. 



124. 

 Decimal fractions, I. 108. 

 Decimetre, II. 152. 

 Decistere, II. 162. 

 Declination, I. 536, 542, 



PI. 35. 

 Declination of columns, II. 



173. 

 Declination of falling 



bodies, II. 358. 

 Dccliiiatiou of the com- 

 pass, I. 691, PI. 41. 

 Declination in London, II. 



44-3. 

 Declination of the stars, II. 



844-, 355. 

 Declivitiesof mountains, II. 



498. 

 Decomposition, II. 291. 

 Decomposition of water, I. 



672. 

 DecompositiSn with light. 



I. 435. 

 Decrement of heat, II. 404. 

 Decrements, II. 7. 

 Decremps, II. 127. 

 Decyphering, II. 143. 

 De Dominis. See Dominis. 

 Defects of sight, I. 450. 

 Definition, 1. 18. 

 Deflective forces, 1. 33. 

 Defondeur, I. 246. 

 Degaulte,II. 445. 

 Dcgeer, 1. 750, 756. B.1720. 



D. 1778. 

 Degnguet, 11. 217. 

 Degrees, I. 104, 569,11.358. 

 Degrees of a spheroid, II. 



363. 



Delairas, II. 12R. 

 Delambre,II. 361. 

 Delarive, II. 267. 

 Delaunay, II. 435. 

 Delaval, 1.481, II. 321. 

 Delft ware, II. 216. 

 Delineator, II. 284. 

 Delisle, II, 324,366,386. 

 Delius, II. 211. 

 Delia Torre, II. 493. 

 Deloys,II. 127. 

 Delta, I. 721. 

 Deltoid muscle, L 128. 

 Deluc,1. 706, 709, 7 10, 750, 

 751, II. 128, 367, 388, 

 390, 391, 393, 398, 418, 

 446, 406, 469 . . 473, 

 497. 

 Dekre's hygrometer,I.P1.41. 

 Deluge, II. 495, 497, 498. 

 Deluge, n. 4196. 

 Demetrius Phalcreus, I. 



592. 

 DemOcriWs, t. 2S8, 253. 

 744, 745, 756. B. 470. D. 

 361. B.C. 

 Demoivre, I. 249, 253, II. 

 113, 117. B.1667.D.1754. 

 Deijiolition, 1. 234, II. 216. 

 Denarius, II. 162. 

 Dendcra, II. 377. 

 Dendrometer, I. 107, II. 



156, 351. 

 Denebola, I. 497. 

 Denier, II. 161. 

 Denmark, II. 367. Royal 

 Society of Denmark, I. 

 108. 

 Densities, II. 503. 

 Densities of the sun and 



planets, I. « 565." 

 Density, I. 610. 

 Density of air, II. 404, 



471. 

 Density of brine, II. S88. 

 Density of the atmosphere, 

 I. PI. 19. 



Density of the earth, I. 575, 



II. 364. 

 Density of the moon, II. 



336. 

 Density of the planets, II. 

 333,539,859,372. 



Density of water, II. 389. 



Deoxidation, II. 323. 



Deposition, I. 707, II. 396. 



Depositions of the sea, II. 

 497. 



Depression of liquids I. PI. 

 39. 



Depression of mercury, II. 

 381. 



Depth of a river, 225, 236. 



Depth of the sea, I. 6791, 

 581, II. 255, 343. 



Depth of vessels, II. 396. 



Derham, I. 201. 370, II. 

 107, 125, 191, 325, 457, 

 541. B.1657.D. 1735. 



Derivations, II. 119. 



Derwent lake, II. 458j' " 



Desaguliers, I. 129, 181, 

 250, 253, 360, II. 126, 

 148, 165 . . 167, 171, 

 246, 414. B. 1603. D. 

 1742. 



Design, II. 142. 



Descartes, I. 29, 248, 253, 

 474, 475, 483, 747, 74d, 

 756, II. 112, 272, S06, 

 323, 523, 527, 557, 558. 

 B. 1596. D. 1650. 



Descent, II. 181. 



Descent in air, II. 226. 



Descent in chords of a 

 circle, I. 43, PI. 2, II. 

 33. 



Descent in curves, I. PI. 2. 



Descent in water, II. 227. 



Descent of a rod on a cy- 

 linder, II. 138. 



Descent of ground, II. 49B. 



Descent of spheroid*, II. 

 138. 



