Proculus, Julius, bids the Romans worship Romulus as a god, ii. 182

Proerosia, “Before the Ploughing,” a Greek festival of Demeter, vii. 50 sqq., 60, 108

Profligacy at rites designed to promote the fertility of trees and plants, ii. 97, 104;

of human sexes supposed to quicken the earth, v. 48;

at Holi festival in India, xi. 2

Progress, the magician's, i. 214 sqq.;

intellectual, dependent on economic progress, i. 218;

industrial and political, i. 421

Prohibited degrees of kinship, the system of, perhaps based historically on superstition, ii. 117

Promathion's History of Italy, ii. 196, 197