[Roman figures refer to the chapters, Arabic to the articles.]
Pouillet (1791–1868), xiii. 307, 319
Prévost (1751–1839), xii. 265
Pritchard (1808–1893), xiii. 278 n, 279, 316
Ptolemy, Claudius (fl. 140 A.D.), ii. 25, 27, 32, 37, 46–52, 53, 54; iii. 55, 57, 59–63, 68; iv. 70, 76, 80, 83–87, 89, 91; v. 94, 105; vi. 121, 129, 134; vii. 145; viii. 161; ix. 194; x. 205; xi. 236
Ptolemy Philadelphus, ii. 31
Purbach (1423–1461), iii. 68; iv. 71
Pythagoras (6th cent. B.C.), i. 11, 14; ii. 23, 28, 47, 51, 54
Recorde (1510–1558), v. 95
Regiomontanus (1436–1476), iii. 68, 69; iv. 70, 71; v. 97, 110
Reimarus. See Bär
Reinhold (1511–1553), v. 93–96; vii. 139
Reymers. See Bär
Rheticus (1514–1576), iv. 73, 74; v. 93, 94, 96
Ricardo, ii. 47 n
Riccioli (1598–1671), viii. 153
Richer (?–1696), viii. 161; ix. 180, 187; x. 199, 221
Rigaud, x. 206 n
Roemer (1644–1710), viii. 162; x. 198, 210, 216, 220, 225; xiii. 283
Rosse (1800–1867), xiii. 310, 317
Rothmann (fl. 1580), v. 97, 98, 106
Rudolph II. (the Emperor), v. 106–108; vii. 138, 142, 143
Sabine (1788–1883), xiii. 298
Sacrobosco (?–1256?), iii. 67, 68
St. Pierre, x. 197
Savary (1797–1841), xiii. 309
Scheiner (1575–1650), vi. 124, 125; vii. 138; viii. 153; xii. 268
Schiaparelli, xiii. 297
Schomberg, iv. 73
Schoner, iv. 74
Schönfeld (1828–1891), xiii. 280
Schroeter (1745–1816), xii. 267, 271
Schwabe (1789–1875), xiii. 298
Secchi (1818–1878), xiii. 311, 312
See, xiii. 320
Seleucus (2nd cent. B.C.), ii. 24
Shakespeare, vi. 113
Sharp (1651–1742), x. 198
Slusius, ix. 169
Smith, xii. 251
Snell (1591–1626), viii. 159; ix. 173
Sosigenes (fl. 45 B.C.), ii. 21
South (1785–1867), xiii. 306
Struve, F. G. W. (1793–1864), xiii. 279, 309
Struve, O., xiii. 283 n
Svanberg (1771–1851), x. 221
Sylvester II. See Gerbert
Tabit ben Korra (836–901), iii. 56, 58, 68; iv. 84
Tamerlane, iii. 63
Tannery, ii. 36 n
Thales (640 B.C.?–546 B.C.?), ii. 23; iii. 55
Theon (fl. 365 A.D.), ii. 53
Theophrastus, ii. 24
Theophylactus, iv. 72
Thomson, T., x. 208 n
Thomson, William. See Kelvin