t, 260 _f._

Plataea, battle of, 7.
Plato, 195, 251;
rule for doubling the square, 252.

[Greek: Pleiades], 189.

Plinthium (sun dial), 273.

[Greek: Pneumatikon], 283.

Po, 231.

Podium of theatre, height of, 148.

Pollis, 199.

[Greek: Poloi] (pivots of heaven), 257.

Polus (star), 267.

Polycles of Ephesus, 70.

Polyclitus, 11, 69.

Polyidus, 199, 310.

Polyspast (hoisting machine), 288.

Pompeian pumice, 47.

Pompey, colonnades of, 154;
temple of Hercules, 80.

Pontic wax, 216, 217.

Pontus, 214, 220, 231, 236.

Poplar, 60.

Pormus, 199.

Posidonius, 241.

Pothereus (river), 20.

Pozzolana, 46 _f._

Praxiteles, 199.

Pressing room, 183 _f._

Priene, 103;
Temple of Minerva at, 11, 198.

Primordial substance, 42.

Prison, location of, 137.

Proconnesus, 289.

Pronaos, 114 _ff._, 120.

Proportions, 72, 174 _f._;
of circular temples, 123 _f._;
of colonnades, 154 _f._;
of columns and intercolumniations, 78 _ff._, 116;
of the Corinthian order, 106 _f._;
of doorways of temples, 117 _ff._;
of Doric temples, 109 _ff._;
of the Ionic order, 90 _ff._;
of rooms, 176 _ff._

Propriety, 14 _ff._

Proscaenium of Greek theatre, 151.

Proserpine temple of Corinthian order, 15;
temple of, 200.

[Greek: Pros pan klima] (sun dial), 273.

[Greek: Pros ta historoumena] (sun dial), 273.

Prostas, 186.

Prostyle, 75.

Proteus, daughters of, 239.

Prothyra, 188.

Protropum (wine), 236.

[Greek: Protrygetes] (star), 265.

Pseudisodomum, 52.

Pseudodipteral temple, 75, 78, 82.

Pseudoperipteral temples, 125.

Pteroma, 82, 114, 125.

Ptolemy, 196, 197;
Philadelphus, 197.

Public buildings, sites of, 31 _f._

Pump of Ctesibius, 297 _f._

Purple, 213, 219; substitutes for, 220 _f._

Puzzuoli, 218.

Pycnostyle temples, 78 _f._;
proportions of columns in, 84.

Pyrrus, 199.

Pythagoras, 42, 130, 225, 251, 269;
right triangle of, 252 _f._

Pytheos, 11, 109, 198, 199.

Pythian games, 251.

Quarries of Grotta Rosa, Palla, Fidenae, Campania,
Umbria, Picenum, Tivoli, Amiternum, Venetia, Tarquinii,
Lake of Bolsena, Ferento, 49, 50.

Quicksilver, 215 _ff._

Quirinus, temple of, 78.

Quiver (sun dial), 273.

Rainwater, 229 _ff._

Ram, battering, 309 _f._;
Hegetor's, 314 _f._

Ram (constellation), 266.

Raven (constellation), 268.

Raven, a machine of no value, 310 _f._

Ravenna, 21, 61, 63.

Reduction of