96 



SPE 



INDEX. 



SPR 



Snow, observations on the figures of, vi. 644, . . Langwith 



— figures of flakes of, viii. 577, ~ Stocke 



— configuration of the particles of, xi. 1, Nettis 



— of a family overwhelmed in their cottage by, xi. 41, Bruni 



— of the quantity of water in a fall of, xii. 338, Brice 



Soals (fish) shell-fish the food of, ix. l6, Collinson 



Soap, to make soap-lees for medicinal uses, viii. 565, Geoffroy 



— efficacy of, in curing the stone, ix. 340, Lucas 



« xi. 122, Pringle 



i xi. 161, Whytt 



Soap-earth, near Smyrna, (carbonate of soda) iv. 80, Smith 



Soap-tree, account of the, i. 230, Note 



Soil, singular appearance, on opening a well at Hanby, xv. 



117, Englefield 



Solander, Dan. Cha., m. d., biog. account of, xi. 669, Note 



— account of the gardenia (cape jasmine) ibid 



— of hump-backed perch in Sweden, xii. 421, Note 



— transit of Venus, 1769, at Otaheite, xiii. 177 



Solids, of the lunula, to find the dimens. of, iv. 505, Demoivre 



— on the solid of least resistance, iv. 54.5, Craig 



Solstices, observations for determining, xiii. 277, Witchell 

 Solutions, that may be called cold, exp. on, iv. 6l 1, Geoffroy 



Solway moss, irruption of, xiii. 305, Walker 



Somersham water, analysis of, xii. 275, Layard 



ibid, Morris 



Son, M. du, method of breaking rocks, i. 28 



— improvement of optic-glasses, i. 36, 41 



Sorbus pyriformis [domestica], account of, ii. 434, .... Pitt 



Sorea, damage by a volcanic eruption at, iv. 13 



Sound, degree of velocity of, iii. 633, Note 



— experiments on the motion of, iv. 338, Walker 



— on the ring, of a bell in vacuo, v. 202, 203, 499, Hauksbse 



— experiments and observations on, v. 380, Derham ; table 



of 1 he degrees of velocity as estimated by different 

 authors, ibid; Mr. D.'s conclusion of the velocity, 393 ; 

 remarks on echos, 394 



— nature and properties of, v. 471, Grand i 



— on the propagation of, through the air, v. 500, Hauksbee 

 ■ . 1 water, ibid, Same 



— velocity compar. with that of electricity, ix. 440, Watson 



— experts, and inquiries on the nature of, xviii. 604, Young 



— see Music. 



South, Captain, number of houses and hearths in Dublin, 

 1 696-7, iv. 481 



— number of sea-faring men in Ireland, 1697, iv. 481 



— — of people in Ireland, 1696, iv. 482 



of Romish clergy in Ireland, 16.98, ibid 



South Sea, some islands discovered at various times, xii. 269, 



Hornsby 

 Southwell, Sir Robert, description of Pen-park hole, ii. 551 



— of dressing deer skins in America, iii. 458 



— damage in the Isle of Portland, 1696, iv. 198 



— on preserving flowers, fruit, &c. iv. 230 



— of a monstrous calf with two heads, iv. 240 



— to give various tinctures to water, iv. 243 



— to give to iron a copper colour, iv. 304 



— method of gilding silver, iv. 305 



— some philosophical experiments, iv. 317 

 Southwell, Robert, esq., extraordinary echos, ix. 253 

 Spa Water, see Waters (mineral aud medicinal). 



Spain, geological remarks on the north of, xii. 340, Bowles 

 Spar, on the formation of, xii. 384, King 



— a remarkable sparry incrustation, xiii. 439, Same 



Sparrman, Andreas, m. d., description of the honey-bird, 



[cuculus indicator] xiv. 1*28 

 Speaking Trumpet, see Trumpet, 

 Specific gravity, of various bodies, experiments on, iii. 138 



— see G ratify (specific). 



Speculum, to make concave parabolic specula, iv. 222, Gray 



— on glass specula, viii. 393, Smith 



Speech, recov. by means of a frightful dream, ix. 465, Squire 



— see Deaf and Dumb, Tongue. 



Spelter, description of, ix. 305, Mason 



S pence, Joseph, curiosities found at Herculaneum, x. 447 

 Sperma-ceti, see Whale. 



Spermatic vessels, anastomoses in, vii. 420, Mortimer 



Sphere, meridional parts of a spheroid, viii. 514, Maclaurin 

 - — see Globe. 



Spheroid, fig. of the shadow of a prolate, xii. 372, Witchell 

 Sphondylium vulgare hirsutum, on a mistake of Gmelin's 



respecting this plant, x. 355 

 Sphynx elpenor, account of this insect, iii. 120, Molyneux 

 Spiders, and toads, innoxious to swallow, i. 140, . . Fairfax 



— of the Bermudas, remarkable web of, i. 284 



— method of darting their threads, i. 379 i further parti- 



culars, 535 



— table of 33 kinds, i. 601 , Lister ; natural economy of the 



spider, 600, Note 



— darting of the threads, iii. 46, Lister 



— natural history and economy of, iv. 587, • • Leuwenhoek 



— experts, of the manufacture of silk from, v. 542,. . Bon 



— poison of the bite of, vii. 20, Robie 



Spikenard [nardus Indica] an account of, xvi. 65S, . . Blane 

 Spina ventosa, mercury a cure for, viii. 620, . . Schlichting 



— observations on the, ix. 245, Amyand 



Spine, case of a cloven, with preternatural tumour, vi. 487, 



Rutty 



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



— experts, on the spinal marrow of living animals, xvii. 



512, Cruikshank 



Spirit of wine, ascent of between planes, vi. 40, 41, 



Hawksbee 



— affinities of substances in, xvi. 79, Elliot 



Spirit-level, method of using at sea, vii. 620, .... Hadley 

 Spirituous liquors, method of proportioning the excise on, 



xvi. 675, xvii. 263, Blagden; appendix to the report, 

 xvii. 272, Gilpin 



— mixed with water, method of ascertaining the quantity 



of each, xvii. 426, Gilpin 



Spleen, remarks on the, i. 237, Behm 



— structure, use, &c. of, i. 324 Malpighi 



— on the texture of, i. 589, Same 



— observations on a diseased, iii. 460, Grew 



— micros, observ. on the structure of, v. 315, Leuwenhoek 



— observations on the glands of, vi. 262, Douglas 



— excision of a part of, viii. 263, Ferguson 



— cure of an abscess of, viii. 620, Schlichting 



Sponge, micros, observs. on, v. 266, Leuwenhoek 



— formation of, by worms, xi. 227, Peyssonel 



— nature and formation of, xii. 257, Ellis 



— uncommon sorts, on the coast of Italy, xiii. 32, Strange 

 Spottswood, Mr, catalogue of plants at Tangier, iv. 85 

 Spout, of water, on the river at Topsham, iv. 12, . . Mayne 



— observed in the Downs, iv. 564, Gordon 



— water-spouts observed in the Mediterran., iv. 647, Stuart 



— observed in Yorkshire, iv. 709, De la Piyme 



— at Hatfield, v. 1 6, Same 



— in Lancashire, vi. 440, Richardson 



— at sea, vii. 606, Harris 



— in Cumberland, x. 18, Lock 



— raised from the land, x. 27 J , Ray 



— cause of water-spouts, x. 593, . . Eeeles 



SprengeU, Conrad, J., m. d., remarks on vipers, vi. (>1> 



— bills of mortality 1717, Germany, &c. vi. 6*81 

 1720, vii. 10 



— experiments with Dr. Eaton's styptic, vii. 29 



