SHS 
Eudoxus Introduces geometry into agrono¬ 
my, 422. 
Fire-balls, Sec. to determine their height 
by the quadrant, 453. 
Flamfteed’s foiar tables and theory of the 
moon, 425; his Britilh catalogue of ftars, 
427 ; his mode of determining the right 
afcenfion of a fixed ftar, 431. 
Galileo confirms the Copernican fyftem, 
336 ; his telefcopes, 425. 
Georgian planet, difeovered by Dr. Her- 
fchel, and at firft fufpedled by Mr. Lexel 
to be a comet, 391; its fatellites, 392 ; 
their diftance from the planet, inclination 
of their orbits, See. 393. 
Globes, terreftrial and celeftial, 430. 
Graham, a celebrated watch-maker, Sec- 425. 
Hadley’s reflefting quadrant, 425. 
Halley’s difeoveries in aftronomy, 425. 
Harveft-moon, 382. 
Herfchel difeovers a new planet, 343 ; liis 
remarks on the via la&tea, and nebulous 
part of the heavens, 344 5 his ftar-gauge, 
for finding the fun’s place, 345 ; his con¬ 
jectures 011 the internal ftrudture of the 
fidereal heavens, 346 5 and on their fi¬ 
gure, 347 ; his application of projeftile 
forces, 348 ; account of nebulous ftars, 
ibid, of planetary nebulae, 349 5 obferva- 
tions on the foiar fpots, 351 ; on the at- 
mofphere of the ion, 353 ; Ids meafure- 
ment of the mountains in the moon, 380; 
oifeevers additional fatellites to Saturn, 
■ 389 5 extra&s from his catalogue of fixed 
ftars, 409 3 method of obferving changes 
in the fixed ftars, 4ri 5 his remarks on 
their motions, 413 ; obfervations on pa¬ 
rallax, 417 ; his improved telefcopes, 
426 5 farther obfervations on the arrange¬ 
ment of the fixed ftars, 427 5 on their 
comparative brightnefs, 428. 
Hevelius obferves the fpots and phafesof the 
moon, 425; his catalogue ot fixed ftars,427. 
Hipparchus’s opinion on the preceftion of 
the equinoxes, 342 ; he was the firft who 
ftudied every part of aflronomy, 422. 
Hook, Dr. his inventions, 425. 
Horizontal moon, 383, 
Korrox, Mr. his curious difeoveries, 425. 
Ir.ftruments for aftronomical refearches, 429. 
John de Sacro Bofco, or Halifax, 423. 
Jupiter, 384; his axis, orbit, and fatellites, 
385; changes in his revolution, 390. 
Kepler improves and correAs the Coperni¬ 
can fyftem, 337; finiihes the tables of 
Tycho Brahe, Sec. 424. 
Latitudes and longitudes of heavenly bodies* 
to calculate, 432. 
Lunarium, 430. 
Magnetifm of the earth, Knight’s hypothe- 
fis, 365. _ 
Mars, defeription of that planet, 384. 
Malkeline, Dr. his remarks on the fixed 
ftars, 413; his obfervations at St. Hele¬ 
na, Sec. 426. 
dC'GEUS, king of Attica, 798. 
lcibiades, firft diftinguilhes himfelf 
in the w'ar againft the Potideans, 5143 
oppofes peace with the Lacedemonians, 
518 ; accufed by the Athenians, efcapes to 
Aigos, and joins the Spartans, 519; dees 
to Sardis, 522; rejoins his countrymen 
the Athenians, 5135 etre s Athens in 
triumph. 524; fets Gil againft the Athe¬ 
nians, 524; once more difgraced, 524;* 
his death, 526. 
Anaxagoras ftarves himfelf to death, 516. 
Archons, their tyranny, 526; depofed, 527. 
Ariltides, 504; banifned by oftracilm, but 
recalled utter thiee years* 5063 com- 
ASTEONOMY.-—ATTICA. 
Mercury, defeription of that planet, 356. 
Meridians, to reduce one to another, 454. 
Micrometer for meafuring diftances, 529. 
Month, fynodical and periodical, 376 ; to 
calculate, 379. 
Moon, her irregularities explained by fir 
Ifaac Newton, 341 5 a Satellite to the 
earth, and fhines with light borrowed 
from the fun, 375 ; her diameter, mo¬ 
tions, &c. 376; changes her orbit, ibid, 
her irregularities accounted for, and com¬ 
puted, 377 ; denfity, ibid, plane of her 
orbit, ibid, acceleration, 387 5 phafes and 
mean motion, 379 ; to find her age or 
change, 380 ; fpots, mountains, Sec. ibid, 
volcanos, 381; atmofph.ere, ibid, har¬ 
veft-moon, 382 ; horizontal moon, 383 ; 
conftre.Aion of the moon, and whether 
inhabited, ibid, influence on the weather 
and on the human body, 384 ; to deter¬ 
mine the place of her apogee, 438 ; to 
calculate her eclipfes, 443 3 partial eclipfe, 
445; total, 446. 
Napier, baron, invents logarithms, 426. 
Newton’s fyftem of gravitation, 341 ; dif¬ 
eovers the real figure of the earth, 342; 
calculates the weights and denfities of the 
planets, 343; remaiks on his fyftem, 
343; his dodlrine of comets, 401. 
Orrery, Rowley’s grand, 430. 
Paradoxes formed from the figure of the 
earth, 365. 
Parallax explained, 4x5; remarks of Brad. 
Icy and Herfchel, 416; examples to il- 
luftrate, 417 ; to find by calculation, 433.. 
Pendulum clock for ihowing equal time, 429. 
Planetarium, or finall orrery, 430. 
Planets, 350-395. 
PraAical Aftronomy, its progrefs in dif¬ 
ferent parts of the world, 422 ; its revi¬ 
val in Europe, 423. 
Ptolemy’s fyftem of eccentric fpheres, 33T ; 
confuted by Copernicus, 333 5 his A Ima¬ 
ged-, 423 5, publilhes a catalogue of the 
fixed ftars, 426. 
Purbach, a celebrated aftronomer, 423. 
Pythagorean fyftem, 422 3 reftored by Co¬ 
pernicus, 424. 
Quadrant, Hadley’s, 426 ; aftronomical,429. 
Rays of the fun, how they a£t upon the 
earth, 354. 
RefruAion, 417 ; to calculate the refradlion 
of the heavenly bodies, 437. 
Regiomontanus, his labours in praAical 
aftronomy, 423. 
Saturn, 386 3 his ring, 387 3 his fatelli’es, 
388 ; a fixth and levench fatellite difeo¬ 
vered by Herfchel, 3825 revolution, ibid. 
Scripture reconciled to the phenomena of 
modern aftronomy, 456. 
Seafons, caufes of the change of, 370. 
SeAor, equatoreal, 429. 
Secular motions of Jupiter and Saturn, 389. 
Solar and fidereal day, 371. 
Stars, fixed, 407 3 diftance and magnitudes. 
ATTIC A... 
mands the Athenian forces at the battle 
of Platea, 508 3 his extraordinary inte¬ 
grity in the management of the public 
money, 510; dies poor, 511. 
Athenians change their kingly government 
into a republic on the death of Codrus, 
500 ; Pifittratus makes himfelf abfoiute, 
502 ; gain the enmity of Perfia, 504 ; de¬ 
feat the Perfians at Marathon, 505 3 
forced by the Perfians to defert their city, 
507 ; a fecond time, 50S ; rebuild it, 509 5 
jealous of the Spartans, 512; their wars 
with chem, 503, 512; r: axe a peace with 
them for thirty years, 513; take part 
-with the Milsfians againft the Samians, 
408, 411; double, treble. Sec, 409 ; num¬ 
ber, 410 ; new ftars, ibid, changes in; 
them, 411 ; nature and ufe, ibid, motion 
and other phenomena, 412 ; catalogues 
of them by various aftronomers, 426 j. 
new arrangement by Dr. Herfchel, 427 ; 
comparative brightnefs, 428 3 to calcu¬ 
late the right afcenfion of a fixed ftar, 
431 - 
Sun fuppofed by Herfchel to be inhabited-, 
349 ; imperfeA idea the ancients had of 
this luminary, 350 ; opinions on the fub- 
ftance of it, 350, 351 j fpots in the Sun, 
351; atmofphere, 352, 353; opaque bo¬ 
dy, 354 5 figure, ibid, motion, 355 ; mag¬ 
nitude, ibid, farther particulars relative 
to this planet from Newton, ibid. Sun’s 
parallax determined by the tranfits of 
Venus and Mercury, 360; his apparent 
diameter greater in winter than funrmer, 
371 ; dire£lion of his rays towards the 
earth in winter and fummer, ibid, dif¬ 
ference between foiar and fidereal time, 
ibid, eclipfes of, 396 ; total eclipfe, 397 3. 
to calculate eclipfes of, 447. 
Superior planets, phenomena peculiar to- 
them, 393. 
Syftem of concentric fpheres, 328; of ec¬ 
centric fpheres, 330; perfedled by Pto¬ 
lemy, 331 3 of Cleanches and the ftoics,. 
33r 3 of Hipparchus, little attended to 
by philofopiiers, 331 ; of Copernicus, 
333; of Purbach, 335; Tycho Brahe, 
33 - 6 . 
Tails of comets, Newton, Rowning, Euler, 
and Hamilton’s, opinion concerning them* 
402 ; opinion of Halley and others, 40 j. 
Telefcopes invented and" applied to aftro- 
nomy, 424; greatly improved by Huy¬ 
gens and Fontana. Dolland, &c. 425 3 
particularly by Herfchel,. 426; refiacting: 
and refieAung, 429. « 
Tellurian, invented by Adams, 430. 
Thales the Milefian, his early labours in- 
praAical aftronomy, 422. 
Tranfit inftrument, 429. 
Tycho Brahe forms a new fyftem of aftro. 
nomy, 336 ; firft difeovers the true na¬ 
ture of comets, 4CI; farther accounts of 
him, 4245 his catalogue of fixed ftars,. 
426. 
Venus, 356; fpots difeovered on this pla¬ 
net, 357. 
Venus and Mercury, peculiar phenomena* 
of, 3573 phafes of, 359; tranfits, 3604. 
Werner, John, aftronomer at Nuremberg,. 
423. 
William IV. landgrave of Heffe, 424. 
Woollafton’s catalogue of ftars, 427. 
Wright, Edward, an eminent aftionomer, 
42 - 4 - 
Writers on aftronomy, 42g. 
Year, aftral, tropical, and anomaliftsc, 372-4 
Zodiacal light, 355, 406. 
Zodiacal figns explained, 415. 
and* with the Corcyrians againft the Co¬ 
rinth aus, 514; defeat the Potideans, 
Corinthians, and Macedonians, 504; en¬ 
gage in the Peloponnefian war, 535; fend 
propofals of peace to Sparta, which are 
rejected, 515; fend.fuccours to the Egifti- 
ans, 519; their whole army captured at Sy- 
racufe, 522 3.changes in their government*. 
523 ; condemn fix generals to death for 
omitting the rites of burial to the fliin, 
525 ; defeated at Egofpotamos, 525 ; are 
forced to accept very hard terms of peace, 
526; reign of the thirty tyrants, ibid, the- 
decemviii, 527; re-eftablifh the popular 
government, ibid, affift the Spartans a- 
I gairife 
