.698 



INDEX, 



Divided object glass, 1. 432, 



n. 289. 

 Divided speculum, I. 433. 

 Dividingengine,!. 105,112, 



II. 145. 

 Dividing stones, II. 209. 

 Dividing thermometers, 11. 



398, 399. 

 Diving, II. 243. 

 Diving bell, I. 246, 342, PI. 



24,11.255. 

 Diving boat, II. 256. 

 Diving machine, II. 244. 

 Divining rod, II. 480. 

 Divisibility, I. 607. 

 Divisibility of matter, II. 



378. 

 Division, II. 2, 3. 

 Division, I. 227, II. 



S06. 

 Division of a circle, II. 121 . 

 Division of a magnet, I. 

 > . (93. 

 Division of an angle, II. 



149. 

 Division of labour, 1. 244. 

 Division of the quadrant, 



II. IIB, 145. 

 Division of time, II. 349, 

 Division without sharp in- 

 . etruments, II. 209. 

 Divisors, II. 116. 

 Diwisch, II. 482. 

 Dixon, II. 362. 

 Dobson, II. 467. 

 Docks, II. 233. 

 Dodart, II. 550. 

 Dodgson, II. i252. 

 Dodson, I. 749, n. 113, 

 . 117. 

 Dog, n. 516. 

 DoUond, I. 431, 478 . . 



480, 483, 602, 604. 

 Doilort sea, II. 495. 

 Dolomieu, II. 492, 494, 

 Dome, I. 164, PL 12, U. 

 . 43, 175, 176. 



Dominant, I. 393, II. 570. 

 Dominis. De Dominis, I.^ 



474, 483, 11. 280, 306. 



B. 1625, D. 1664. 

 Donati, II. 366, 496. 

 Donndorff, II. 416. 

 Door, I. 148. 

 Doppclmaier, II. 326, 328, 



422. 

 Doria, II. 610, 611. 

 Doric column, I. PI. 12. 

 Dornavius, II. 478. 

 Dort, n. 495. 

 Double axis, I. 67. 

 Double balance, II. 194. 

 Double capstan, I. PI. 4, 



II. 135, 197. 

 Double capstan crane, II. 



199. 

 Double concave lens, 1. 416. 

 Double cone, I. PI. 3, II. 



133, 134, 138. 

 Double convex lens, 1. 416, 

 Double curvature, II. 650. 

 Double images, I. 441. 

 Double lights, I. 464,'Pl. 3, 



11.316,624,633,639. 

 Double magnifier, I. 431. 

 Double microscope, II. 78. 

 Double pen, II. 144. 

 Double pendulum, II. 139. 

 Double pfefraction, I. 445. 



PI. 29, II. 309. 

 Donbler of electricity, I. 



682, PI. 40, II. 434. 

 Double shot, II. 263. 

 Double stars, I. 494, 11. 



328. 

 Double sun, II. 301, 681. 

 Double touch, I. 693. 

 Double vision, I. 453, II. 



315. 

 Doabling, II. 186. 

 Doubling spar, II. 310. 

 Dough, II. 216. 

 Douglas, II. 497, 516. 

 Dover and Calais, II. 495. 



Downs, II. 233. 

 Diachm, II. 101. 

 Drachma, II. 162. 

 Drag, II. 203. 

 Dragging hay, II. 202. 

 Dragon, I. 496. 

 Drags, II. 203. 

 Draining, I. 328, II. 213, 



249, 250. 

 Drain plough, II. 212, 213. 

 Drains, II. 235. 

 Draught, I. 154, 215, II. 



165, 181. 

 Draught of a chimney, I. 



345. 

 Draught of carriages, II. 



201. 

 Drauglitsman'sassistant,II. 



142. 

 Drawbridge, II. 178. 

 Drawing, L 93, 94, II. 142, 



158. 

 Drawing in perspective, I. 



PI. 7,8. 

 Drawing off liquors, 11.251. 

 Drawing piles, II. 216. 

 Drawing ships, II. 213. 

 Drawing weights, II. 200. 

 Drawing wire, II. 205. 

 Dray, I. 212, II. 172, 200. 

 Dray cart, II. 202. 

 Drebel, I. 649, 747, 756. B. 



1572, D. 1634. 

 Drebelian thermometer, II. 



389. 

 Dresdnisches raagazin, II. 



109. 

 Dressing corn, II. 215. 

 Dressing hemp, II. 185. 

 Dressing stuffs, II. 188. 

 Drill, II. 211. 

 Drill plough, II. 212. 

 Driving piles, II. 206, 207. 

 Drop, I. 620, 624, PI. 39, 



n. 380,655,656,664. 

 Drop between plates, I. 



£25, II. 655. 



Drop in a conical tube, II. 



665. 

 Drop of water, II. 382, 396. 

 Drosera, I. 724. 

 Drum, I. 101, II. 268, 374. 

 Drum and axle, I. PI. 3. 

 Dryander, II. 105. 

 Dryness, II. 476, 477. 

 Dry rot, II. 180. 

 Dubois, II. 416. 

 Ducaila, II. 375. 

 Ducarln, II. 384. 

 Duck, II. 184. 

 Du Crest, II. 388.. 

 Ductility, 1.141,629,11.378. 

 Dudin, II. 159. 

 Dufay, I. 670, 750, 756, II. 



283. B. 1698, D. 1739. 

 Dufrcsnoy, II. 142. 

 Dugdale, II. 233. 

 Duharael, II. 107, 125, 158, 



168, 179, 186 . . 189, 



205 . . 208, 211, 213, 



240, 242, 513. H. L. 



Duhamel, B. 170O, D. 



1782. J. B. Duhamel, B. 



1624, D. 1706. 

 Duillier, II. 370. 

 Duke of Bridgwater, 11.197. 

 Dulcimer, I. 398. 

 Duraaitz, II. 240. 

 Dumb, II. 278. 

 Dundas. Lord Dondas, II, 



259 

 Dunkirk, II. 233. 

 Dunn, II. 442. 

 Duodcciraal arithmetic, II. 



40, 116. 

 Duplex scapement, I. 196, 



PI. 16. 

 Duplicate proportion, 11. 



125. 

 Duration of the world, II. 



332. 

 Dusdjour. See Dionis. 

 Dutch camels, II. 238. 

 Dutch Society, II. 109. 



