AUR 



INDEX. 



BAD 



Atrho9phere, experiments in support of the existence of 

 a lunar atmosphere, xi. 644, Dunn 



— cause of the haziness of, in hot weather, xii. 227, 



Franklin 



— peculiar electricity of, Oct. 1775, xiv. 60, . . . . Cavallo 



— effects of effluvia on the, xiv. 322, White 



•—its effects on the heat of boiling water, xiv. 537, 



Shuckburgh 



— relative quantity of its moisture absorbed by various sub- 



stances, xvi. 260, Rumford 



— effect* of atmospherical refractions on astronomical 



observ,, xii. 152, xvi. 221, Maskelyne 



— ■ on refractions of, xviii. 436, Vince 



— double images by atmospherical refraction, xviii. 667, 



Wollaston 



— see Air. 



Atkinson, Joseph, an imposthumation in the stomach, vi. 



579 



— extraordinary case of tumours, vii. 97 



Attraction, Wallis's approach to the idea of universal, i. 

 102, Note 



— laws of, v. 417, Keill 



— figure of revolving fluids, vii. 519, Maupertuis 



— - point of, between the sun and a comet, xii. 405,Winthorp 



— on the attraction of hills, xiii. 700, Maskelyne 



■ Mount Schehallien, xiii. 702, Same 



— point of greatest attraction in a hill, xiv. 603, . . Hutton 



— resolution of attractive powers, 572, Waring 



— see Magnet. 



Attraction, (Chemistry) attractive powers of various saline 



bodies, xvi. 236, Kirwan 



Attrition, of bodies in vacuo, experts, on, v. 270, Hauksbee 



— of glass, electricity by, v. 307, 324, 344, 355, 41 1, Same 



— of several bodies productive of electricity, v. 413, Same 



— production of light by, xvii. 128, 215, Wedgwood 



Atwell, Joseph, d. d., cause of intermitting springs, vii. 544 



— experiments on persons bitten by vipers, viii. 107 

 Atwood, George, the mensuration of an angle, xv. 133 



— on the times of vibration of watch balances, xvii. 380 



— theory of floating bodies j stability of ships, xvii. 682 ; 



xviii. 315 

 Aubert, Alexander, biographical account of, xii. 665, Note 



— observation of the transit of Venus, 1769, in London, 



xii. 665 



— on finding time by equal altitudes, xiii. 734 



— observations of meteors, Aug. and Oct. 1783, xv. 479 

 Aubry, Mr., of a medicated springin Glamorganshire, iv. 21 1 

 Aurora australis, seen at Rome, 1740, viii. 502, . . Revillas 



■ ■ London, 1739, viii. 525, Mortimer 



— — -— — - Chelsea, ibid, Martyn 



■ viii. 526, . . Neve. 



— — — — Chelsea, 1750, x. 3, . . .. Martyn 



Aurora borealis, observ. of two in Kent, vi. 290, . . Barrell 



— seen in London, March, 1717* vi. 291, Folkes 



November, 1719, vi. 441 Halley 



— same at other places, vi. 442 



— four years observations, vi. 645 



— observed at Upsal, vii. 54, Burrman 



— in Ireland, September, 1725, vii. 155, Dobbs 



— at Petworth, October, 1726, vii. 157, Langwith 



— at Plymouth, vii. 158, " Huxham 



— at Exeter, ibid, Hallet 



— at Geneva, vii. 159, Calandrini 



— October, 1726, remarks on, vii. 183, Derham 



— observations of, for 4 years at Lynn, vii. 185,. . Rastrick 



— observed at Southwick, October, 1726, ibid, Lynn 



— at several times, vii. 194, Langwith 



-^- at Liverpool, January, 1727, vii. 195 



Aurora borealis, at several places, October, 1726, vii. 238 



— uncommon appearances in, vii. 351, ,. Derham 



— observed, October, 1728, vii. 384, Weidler 



— an unusual one at Geneva, vii. 393, Cramer 



— in New England, October, 1730, vii. 463, . . Greenwood 



— in Maryland, ■ ■ ■- vii. 464, Lewis 



— inquiry into the cause of, vii. 637, Mairan 



atWittemberg, Feb.& Oct. 1732, vii. 6*4, Weidler 



— observations made on, viii. 69, Celsius 



— in Huntingdonshire, Dec. 1735, viii. 134, .... Neve 



— in Edinburgh, November, 1736, viii. 412, Short 



— at Chelsea, February, 1750, x. 12, Martyn 



— January, 1751, ibid, Miles 



— account of several, x. 63, Baker 



Hague, 1750, x. 134, Gabre 



— on the cause of, and influence on the magnetic needle, xi. 



421, Canton 



— at Philadelphia, 1757, xi. 614, Bartram 



London, the same, ibid, Franklin 



— two observed at Paris, 1768, xii. 6l 1, Messier 



Oxford, l769,xii.66l,xiii.88,..Swinton 



— on the weather preceding and following, xiii. 512. Winn 



— see Light (Meteoric) Mtteors. 



Aurum Mosaicum, apparatus for making, xiii. 106, Woulfe 

 Avoirdupois, the standard of English weights, ix. 637, 



Reynaidson 



— see Weights 



Averrhoa Carambola, sensitive qualities of, xvi. 10, Bruce 

 Austin, Wm., M. D., on the formation of volatile alkali j 



and the affinities of phlogisticated and light inflammable 



airs, xvi. 493 



— analysis of the heavy inflammable air, xvi. 632 

 Authors, method of discovering the age of, by their style, 



v. 227, Wanley 



— a list of, on the theory of rivers, xiv. 593, .... Mann 

 Axis, observations on Perault's axis in peritriochio, vii. 377, 



380, Desaguliers 



— see Earth, Jupiter, Planets, Syc. 



Auzout, Adrian, some account of, i. 3, Note 



— motion of the comet of 1664 predicted, i. 3 



— on Cassini's hypothesis respecting it, i. 9 



— course of the comet of 1665, i. 14 



— table of the apertures of object glasses, i. 22 



— controv. with Hook on the grinding of object glasses, i. 2 



— illuminating an object to any degree, i. 23 



— distance requisite to burn bodies by the sun, i. 23 



— superiority of Campani's glasses, i. 24 



— on the satellites of jupiter, i. 25 



— hypothesis of changes in the moon and earth, to be seen 



by their respective inhabitants, i. 41 j verified by the 

 subsequent discoveries of Herschell, i. 42, Note 



— measuring of distances by the telescope, i, 43 



— account of shining worms in oysters, i. 67 



— diameter of the sun, and parallax of the moon, i. 138 



— magnetical variations at Rome, i. 434 

 Aylett, George, observation of a spina bifida, ix. 5 

 Azimuth compass, a new one for finding the variation of 



the needle at sea, viii. 25 1, Middleton 



B 

 Babin, J. P., flux and reflux of the Euripus, i. 592 

 Bacon, Vincent, a man poisoned by the napellus, vii. 642 

 Badcock, R., microscop. observations of the farina of the 

 holly-hock, and passion-flower, ix. 230, 234 



— on the farina fcecundans of the yew-tree, ix. 243 

 Badenach, James, M. D., description of the violaceous par- 

 tridge of Malacca, xiii. 267 



Badily, Wm , a shower of ashes in the archipelago, i. 140 



