HAL 



INDEX. 



HAM 



49 



Hales, Rev. Stephen, on blowing of fresh air through dis- 

 tilling liquors, x. 635 



— on ventilating of ships, x. 6*41 



— to cure ill-tasted milk by ventilation, x. 642 



Halesia [halesia tetraptei a] description of, xi. 508, . . . Ellis 

 Halifax, Rev. W., journey from Aleppo to Palmyra, iv. 33 

 Hall, Captain, on the poison of the rattle-snake, vii. 196 

 Hall, in Saxony, rich salt springs at, i. 48 

 Haller, Albert, biographical account of, viii. 6*55, . . Note 



— account of his Enumeratio Stirp. Helvet., ibid, Watson 



— hair in a tumour of the ovarium, ix. 29 



— of the centaurea orientalis, ix. 31 



— case of scirrhosity of the cerebellum, ix. 49 



— observations in morbid anatomy, ix. 349 



— experiments on respiration, x. 5 



— on the passages of the semen, x. 9 

 Hallerstein, account of the Jesuit missionaries, x. 220 



— astronomical observations at Pekin, x. 238 



Hallet, W., m. d., of an aurora borealis, Oct. 1725, vii. 158 

 Halley, E., ll.d., biographical memoir of, ii. 326,. . Note 



— on the aphelia, &c. of planets, ibid 



— astronom. observ. at Ballasore ; longitude of that place ; 



correction of some errors of eminent astromers, ii. 525 



— motion of Saturn's 4th satellite, ii. 584 



— theory of magnetic variation, ii. 624 



— table of magnetic variations, ii. 625 



— theory of the tides at Tonquin, iii. 67 



— laws of gravity ; a problem in gunnery, iii. 26l 



— on the height of Mercury at different elevations above 



the earth ; on its changes with the weather, iii. 300 



— on monsoons and trade-winds, iii. 320 



— construct, of solid prob. by a parabola and circle, iii, 376 



— quant, of vapour drawn by the sun from the sea, iii. 387 



— roots of cubic and biquadratic equations, iii. 395 



— circulation of vapour from the sea, iii. 427 



— time and place of Caesar's descent in Britain, iii. 438 



— conjunction of Venus and Mercury with the sun, iii. 448 



— minute divisibility of gold, iii. 459 



— the several species of infinite quantity, iii. 465 



— cause of magnetical variation, iii. 470 



— on the internal structure of the earth, iii. 472 



— attempt to fix the value of annuities, iii. 483 



— effect of heat and cold in expanding and condensing of 



fluids, iii. 505 



— proportional heat of the sun in all latitudes, iii. 576 



— examination of Albatenius's astronomical tables, iii. 586 



— problem for finding the foci of optic glasses, iii. 593 



— queries respecting the nature of light, iii. 600 



— method of finding the roots of equations, iii. 640 



— experiments and observations on evaporation, iii. 658 



— moment of the sun's ingress into tropical signs, iv. 5 



— construction of logarithms, iv. 18 



— proposition in gunnery for laying a mortal 1 , iv. 27 



— proposition for measuring cycloids and epicycloids, iv. 47 



— account of the ancient Palmyra, iv. 60 



— analogy of the logarithmic tangents to the meridian, iv. 68 



— of a whelp voided per anum, iv. 110 



— description of a Roman altar-piece, iv. Ill 



— true theory o\ tides, iv. 142 



— of a hail storm at Chester, iv. 171 



— the torricellian experiment on Snowden Hill, iv. 174 



— lunar eclipse, Oct. l6"97, iv. 222 



— of an extraordinary rainbow seen at Chester, iv. 277 



— colours and diameter of the rainbow, iv. 527 

 -— remarks on Hook's marine barometer, iv. 56l 



— unusual parhelia, and circular arches, iv. 664 

 — - account of, and observations on, meteors, vi. 99 



Halley, Edm. on the account of magnetical variations of 

 the Royal Academy of Sciences, and on the longitude of 

 Magellan Straits, vi. 112 



— various observations of the solar eclipse, 1/15, vi. 155 



— inquiry into the antiquity of the earth ; on the saltness of 



the ocean, &c, vi. 169 



— account of new stars within 150 years, vi. 196 



— account of newly discovered nebulae, vi 205 



— meteoric lights March 17 16, accounted for, vi. 213 



— to determine the sun's parallax, vi. 243 



— of the unusual brightness of Venus, 1716, vi. 250 



— on furnis-hing of air to divers in the sea, vi. 258, 522 



— observ. of the moon's appulses to the Pleiades, vi. 308 



— a small comet, London, 1717, vi. 322 



— change of the latitudes of some fixed stars, vi. 329 



— a meteor seen over England, March 1719, vi. 406* 



— longitude of the Cape of Good Hope, vi. 414 



— an aurora borealis, Nov. 1719, vi. 441 



— parallax of fixed stars, and magnitude of Sirius, vii. 443 



— infinity of the sphere of the fixed stars, vi. 456* 



— number, order, and light of the fixed stars, vi. 457 



— use of cross hairs in telescopes, vi. 494 



— measuring of heights by the barometer, vi. 496 



— effect of refraction of air in astronomical observ. vi. 517 



— magnetic variation in the Pacific, vi. 519 



— to find the planets' places by the stars, vi. 530 



— observations of a parhelion, Oct. 1721, vi. 531 



— longitude of Buenos Ayres, vi. 549 



— solar eclipse, Greenwich, 1722, vi. 604 



— longitude of Port Royal in Jamaica, vi. 619 

 Carthagena in America, vi. 620 



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



— observ. of mercury determining its orbit, vii. 71 



— defence of Newton's chronological index, vii. 172, 191 



— proposal for finding the longitude at sea, vii. 501 



— observations of latitude and variation from Java to St. 



Helena, vii. 552 



— lunar eclipse, 1736, Greenwich, viii. 116 



Halo, remark, halos about the moon, i. 146, Earl of Sandwich 



— seen at Paris, i. 457, Huygens 



— cause of halos, i. 458, Same 



— unusual halo and parhelion, iv. 487, Gray 



— large one about the moon, 1728, vii. 384, .... Weidler 



— seen at Rome round the sun, viii. 32, Revillac 



— observation of a remarkable halo, xi. 514, Barker 



— halos and parhelias seen in N. America, xvi. 181, Baxter 

 Hamel, John Baptist du, biograp. account of, i. 536, Note 

 Hamel, Henry Louis du, biograp. account of, viii. 420, Note 



— exper. on madder-root in tinging the bones, viii. 420 

 Hamilton, Hon. Charles, descrip. of a water clock, ix. 236 

 Hamilton, Rev. Hugh, d. t>., biog. notice of, xi. 706, Note 



— properties of mechanic powers, ibid. 



— on the nature of evaporation, xii. 223 



Hamilton, Rev. J. Aug., transit of Mercury, 1782, xv. 456 

 Hamilton, Rob., m. d., suppression of urine cured by a punc- 

 ture of the bladder through the anus, xiv. 113 

 Hamilton, Hon. Sir Wm , biog. account of, xii. 417, Note 



— eruption of Vesuvius, 1765, ibid 

 Etna, 1766, xii. 419 



Vesuvius, 176*7, xii. 494 



— remarks on Vesuvius and other volcanoes in the neigh- 



bourhood, xii. 592 



— journey to mount Etna, and examination, x'ni. 1 



— nature of the soil of Naples, xiii. 92 



— effect of lightning at Naples, xiii. 455 



— traces of volcanoes on the banks of the Rhine, xiv. 276 



— eruption of Vesuvius, 1779, xiv. 6l3 



G 



