32 



DEN 



INDEX. 



DES 



Deaf and dumb, a person, so born, taught to speak, v. 50, 



Ellis 



— a person who recovered his speech, &c. after a fever, v. 



379, Martin 



Deafness, remarks on, i. 242, Holder; on perforating the 

 tympanum, i. 243, Note 



— two deaf persons who understood from the lips' motion, 



v. 378, Waller 



— instruments for remedying, viii. 529, Cleland 



— efficacy of the cupping glass for its cure, xiii. 536,Darwin 



— see Ear. 



Dean, Forest, of the iron works at, ii. 41 8, Powle 



Deaths, by spontantaneous combust, various cases of, ix. 138 



other cases, ix. 144, Hilliard 



Death-watch, description of the, iv. 319. Allen 



observations on the, iv. 576. v. 133, . . Derham 



Debenham,Thos., foetus extracted from the abdomen, x. 153 



Debraw, John, on the sex of bees, xiv. 125 



Decimals, of circulating decimal fractions, xii. 555, Robertson 



Deer, see Moose-Deer, Horns. 



Degg, Simon, m. d., of a large human skeleton, vii. 213 



— case of longevity, ibid 



Degloss, Lewis, transit of Venus, 17o"9j xiii. 47, Dinapoor 



Degrees, see Latitude. 



Deidier, , m. d., biographical account of, vi. 557 Note 



— experiments on bile, ibid, and 56 1, 586 

 Delaval, Edward, electrical experiments, xi. 334, 589 



— damage of St. Bride's steeple by lightning, 1764, xii. 140 



— on lightning conductors, xii. 143 



— the colours of metals in minute particles dependent on 



their specific gravity, xii. 179 

 Delgovitia, situation of the ancient town of, ix. 21 6, 



Knowlton 



ix. 352, Burton 



ix. 354, Drake 



Delirium, a person without an ear for music, singing well 



when delirious, ix. 370, Doddridge 



Delisle, Joseph Nich., biographical account of, vii. 335, Note 



— eclipses of Jupiter's satellites, at Petersburg, vii. 335 



— construction of quicksilver thermometers, viii. 66 



— proposal for measuring the earth in Russia, viii. 124 



— actual admeasurement of the basis, viii. 134 



— parallax of Mars and of the sun, x. 454 



Deluge (universal) opinion of, Hi. 493, Ray 



— on the cause of, vii. 33, 35, Halley 



— idea of in China, x. 3<j0, D'Incarville 



— theory of the, xii. 379, King 



De Luc, John Andrew, see Luc. 



Demoivre, Abraham, biographical account of, iv. 14, Note 



— use of fluxions in solving geometric problems, iv, 14 



— on his multinomial theorem, iv. 176 



— - to extract the root of an infinite equation, iv. 275 



— to find the solid of the lunula, iv. 505 

 »—method of squaring some kinds of curves, iv. 658 



— solution of equations of the 3d, 5th, 7th, &c. degree, 



v. 342 



— on the doctrine of chances, v. 6l8 



— solution of a problem in chances, vi. 98 



— quadrature of a curve of the 3d order, vi. 183 



— simple properties of conic sections, vi. 306 



— motions of celestial bodies, v. 395 



— reduction of algebraic to simple fractions, vi. 595 



— the section of an angle, vi. 6l7 



— reduction of radicals to simpler terms, viii. 271 



— method of calculating annuities, ix. 45 

 Denarius (see Coin.) 



Denis,John,on transfusion of blood, and a new method, i. 159 



Dennis, John, cure of a phrensy by transfusion of blood, 

 i. 218; continuation of the case, 258; further re- 

 marks, 404 



— account of a newly invented styptic, ii. 6j 



— of an uncommon foetus, ii. 1 \6 



Denmark, curiosities seen in, v. 45, Oliver 



Density, see Earth, Air, Planets, &c. 

 Dent, Rev. Thos., of worms in the tongue, &c. iii. 670 

 Dentaria heptaphyllos, account of the, x. 250, .... Watson 

 Derante, Peter, mortification of the os humeri, vi. 556 

 Derby, J., whirlwind in Dorsetshire, Oct. 1731, viii. 359 

 Derham, Wm., d.d., Torricellian experiment on the monu- 

 ment, iv. 225 



— to make a portable barometer, iv. 226 



— to measure the height of mere, by a circular plate, iv. 231 



— rain fallen in 1698 ; observ. on the barometer, iv. 348 



— observations of the weather, 1699, iv. 483 



— observations on the death-watch, iv. 576, v. 133 



— observations of spots in the sun, v. 79- 



— particulars of a storm of salt rain, v. 92 



— an instrument for finding the meridian of a place, v. 129 



— motion of pendulums in vacuo, v. 172 



— comparative fall of rain at several places, y. 200 



— magnetic experiments and observations, v. 258, 259 



— of a glade of light observed in the heavens, v. 288 



— register of the weather at Upminster, 1705, v. 347 



— observation of a pyramidal light in the heavens, v. 354 



— experts, and observations on the motion of sound, v. 380 



— on the migration of birds, v. 425 



— account of inundations, monstrous births, &c, v. 485 



— observations of the solar eclipse, Sept. 1708, v. 487 

 lunar eclipse, Sept. 1708, ibid 



— comparison of the weather at Zurich and Upminster, 



v. 497 



— account of the great frost of 1708-9, v. 533 



— instance of a child crying in the womb, v. 539 



— dissertation on the above case, ibid 



— observations of the solar spots from 1703 to 17 11, v. 622 



— subterraneous trees found near the Thames, v. 681 



— lunar eclipse Jan. 1712, v. 700 



— of a woman recovering from small -pox delivered of a 



dead child covered with pustules, vi. 43 



— fall of rain at Upminster for 18 years, vii. 97 



— mischief arising from swallowing plumstones, vi. 253 



— the application of telescopic sights to instruments dis- 



covered by Mr. Gascoigne, vi. 295 



— on the sexes of wasps, vii. 16 



— account of the lumen boreale, 1726, vii. 183 



— eclipses of Jupiter's satellites, 1700 to 1727, vii. 227 



— longitude of various places compared, vii. 334 



— uncommon appearances in an aurora borealis, vii. 352 



— observations on the ignis fatuus, vii. 374 



— of the frost in 1730-1, vii. 448 



— meteorological diaries, vii. 530 



— observations of the nebulous stars, vii. 602 



— meteorological observations at Petersburg, vii. 6ll 



— remarks on meteorological diaries, vii. 66"0, 666, 676 



— experts, on the vibrations of pendulums, viii. 60 

 Desaguliers, J. T. ll.d., biograph. account of, vi. 229, Note 



— experiment on light and colours, ibid 



— experiment on the refrangibility of light, yi. 239 



— cause of the variation of the barometer, vi. 283 



— experiment of an interspersed vacuum, vi. 321, 480 



— very speedy vegetation of turnips, vi. 404 



— efficacy of Villette's burning-glass, vi. 405 



— of telescopes without eye-glasses tor myopes, vi. 424 



— resistance of the air to falling bodies, vi. 428, 430 



