HEB 



INDEX. 



HEP 



51 



Hearing, for hearing of fishes, see Fishes. 



Hearne, Thomas, biographical notice of, v. 50, Note 



— remarks on some ancient brass weapons, v. 511 



— aurora borealis, at Streatham, vi. 442 



Hearne, U., m. d., of the lake Wetten, in Sweden, v. 207 

 Heart, remarkable appearance in, i. 30 



— Treatise on the heart, i. 330, 6 12, Lower 



— motion of the urchin's heart cut out, ii. 6l, . .Templer 



— influence of respiration on the motion of, iv. 698, Drake 



— enlargement of the left ventricle, vi. 181, ... . Douglass 



— muscular motion of, vi. 375, Jurin 



— foramen ovale, found open in an adult, viii. 54, Amyand 



— Dr. Stuart on the structure of, viii. 483, Mortimer 



— turned upside down, case of, viii. 508, Torres 



— much enlarged, case of, with observ., xi. 585, Pulteney 



— effects of a blow on the heart, xii. 39 



— case of a transpos. of the heart, &c, xvii. 295, Abernethy 



— observations on the foramina thebesii, xviii. 286, . . Same 



— an unusual formation of the, xviii. 332,. Wilson 



— see Blood, Polypus. 

 Hearths, see Population. 



Heat, (nat. phil.) degrees of boiling liquors, vii. 1, Fahrenheit 



— power of the body to resist, xiii. 604, 695, .... Blagden 



— diminution of weight in bodies by heat, xvi. 13, Fordyce 



— on the conducting powers of air, &c, xvi. 108, Rumford 



— experiments on the nature of, xvi. 288, Fordyce 



— observations on subterranean heat, xvi. 377». • • . Hunter 

 xvi. 406, Six 



— on producing light by heat, xvii. 128,215, Wedgwood 



— on conducting powers of various subst., xvii. 135, Rumford 



— source of the heat excited by friction, xviii. 278, . . Same 



— on the weight ascribed to heat, xviii. 496, Same 



— similarity of light and heat, xviii. 692, 748, . . Herschel 



— see Thermometer, Fire. 



Heat (meteor.) warmth of the air, Jan., 1742, viii. 548, Miles 



— thermometrical observations, x. 126, Stedman 



— of the air, July, 1757, at Plymouth and London, xi. 176, 



204, Huxham 



— dif. of heat at Edystone and Plymouth, xi. 191, Smeaton 



— of July, 1757, effects of on the health, xi. 204, . . Huxham 



— at Georgia, xi. 277, Ellis 



— of the climate at Bengal, xii. 423, Martin 



— of London and Edinburgh compared, xiii. 685, Roebuck 



— of the variation of local heat, xv. 609 ; xvi. 404, .... Six 



— see Meteorological observations, Weather. 



Heated room, experiments in, xiii. 604, 695, .... Blagden 



xiii. 687, Dobson 



Heathcot, Thom., observ. of the lunar eclipse, 1681, ii. 557 



— tide, and magnetic variation at Cape Corso, iii. 32- 

 Heavens, construction of, xv. 6ll, 680, xvi. 586, Herschel 

 Heberden, Thomas, m. d., observations in ascending the peak 



of Teneriffe, x. 230 



— the weather and fall of rain at Madeira, x. 232, 488 



— earthquake of 1751 at Madeira, x. 66'4 

 176l at Madeira, xi. 543 



— proportion of the decrease of heat from elevation, xii. 218 



— increased mortality at Madeira, xii. 475 



— quantity of rain different at different heights, xii. 659 



— eclipses of Jupiter's first satellite, at Madeira, xiii. 82, 

 Heberden, Wm., m. d., biograph. account of, x. 103, Note 



— of a very large human calculus, ibid 



— effects of lightning on a church, xii. 126 



— of a salt on the peak of Teneriffe, xii. 195 



— a stone spontaneously voided from the bladder, xii. 219 



— mean heat of every month for 10 years in London, xvi, 384 

 Heberden, William, Jun., M. d. influence of cold on the 



health of die inhabitants of London, xviii.- 1 



Hedgehog, its anatomy compared widi a porcupine, iii. 391 

 Hce, Christ., press, of weights on moving machines, x. 558 

 Heel, see Tendon of Achilles. 



Heights, baro. measure, of, in Savoy, xiv. 203, Shuckburgh 

 — in Britain, xiv. 237* Roy 



— comparison of Col. Roy's rules for measuring them with 



his own, xiv. 405, Shuckburgh 



I — see Barometer. 

 Heinsius, G. gold-coloured glazing for earthen- ware, viii, 606 



— disappearance of Saturn's ring, 1743-4, viii. 722 

 Heister, Laurence, ai. d., biog. account of, vii. 447, Note 



— of a stone voided by the urethra, ibid 



Hejera, acountof this Mahometan era, xvi. 509, . . Marsden 



— table of the years of the Hejera corresponding with the 



Christian era, 5 14> Same 



Helena, (St.) recommended for making observations of the 



lunar parallax, xi. 519, De La Caille 



Hellins, Rev. J., theor. for computing logarithms, xiv. 682 



— on the equal roots of equations, xv. 317 



— improvem. of Halley's quadrature of the circle, xvii. 414 



— improvem. of Jones' computation of the log. 10, xvii. 699 

 Emerson's xvii. 702 



— value of slowly converging series, xviii. 312 



— to obtain swiftly converging series, xviii. 408 



— summation of slowly converging series, xviii, 415, 599 

 Helmont, LB. Van., biographical account, ii. 155, ..Note 



— preparation of laudanum, ii. 155 

 Helvetia, — see Switzerland. 



Helvetius, Adrian, m. d„ biograp. account of, vi. 198, Note 



— medicinal virtues of the pareira brava, ibid. 

 Hemlock, medicinal virtues of its leaves, iv. 1 83, .... Ray 



— persons poisoned by, ix. 38, Watson 



— description of the cicuta aquatica [virosa] ix. 26 1, Same 



— of the proper sort for medicinal uses, xi. 530, .... Same 



— in its green state, successfully taken for cancer, xii? 37, 



254, Colebrook 



— experiments on different extracts of, xii. ] 20, . . Morris 

 Hempseed, an indissoluble salt from, xii. 616, Ellis 



— cultivation of the Chinese, xv. 180, Fitzgerald 



Henbane, the smell pleasant, in insects feeding on it, i. 602 



« Lister 



— medicinal quality of, vii. 6 10, Sloane 



— effects of the poison of, viii. 267, Patouillat 



— effects of, x. 185, Stedman; remarks, 1 86, .... Watson 

 Hemorrhage, see Hemorrhage. 



Henchman, Rev. Mr., effect of the mixture of the farina of 

 blossoms, ix. 169 



Henley, Wm., effects of lightning at Tottenham Court- 

 road chapel, 1772, xiii. 307 



— electricity of fogs, xiii. 313 



— different efficacy of pointed and blunt lightning con- 



ductors, xiii. 512 



— various experiments in electricity, xiii. 551, xiv. 130 



— effects of lightning on a house with conductors, xiii. 659 

 bullocks, xiv. 90 



— machine for perpetual electricity, xiv. 97 



— impermeability of glass to electric fluid, xiv. 473 

 Henry, IV. of France, encouragement of silk-worms, i. 30 

 Henry, Tho., earthquake at Manchester, 1777, xiv. 334 

 Henry, W., d. o., the Wicklow copper mines, x. 280, 338 



— an extraordinary stream of wind, x. 303 



— ossification of the tendons and muscles, xi. 335, 336, 542 

 Henry, Wm., experts, on carbo. hydrogenous gas, xviii. 221 



— experts, for decomposing muriatic acid, xviii. 641 

 Henshaw, Thos., observa. and experts, on May-dew, i. 13. 

 Hepatic air. — see Airs, Gas. 



