274. Origen, Exhortation to martyrdom, 235 510 275. Origen, Commentary on Numbers 511 276. Leo IV (847-855); indulgences for fighting the heathen 511 277. John II; indulgences for fighting the heathen, 878 512 278. Gregory VII calls for a crusade, 1074 512 279. Speech of Urban II at the council of Clermont, 1095. Fulcher of Chartres 513 280. Speech of Urban II. Robert the Monk 518 281. Truce of God and indulgences proclaimed at the council of Clermont 521 282. Ekkehard of Aura, Hierosolimita; the first crusade 522 283. Anonymi Gesta Francorum, 1097-99 523 284. Eugene III announces a crusade, 1145 526 285. Otto of St. Blasien; the third crusade, 1189-90 529 286. Innocent III forbids the Venetians to traffic with the Mohammedans, 1198 535 287. Innocent III takes the king of the Danes under his protection, 1210 537 288. Innocent III announces a crusade, 1215 537 Section X. Social Classes and Cities in Germany 545-612 289. Otto III forbids the unfree classes to attempt to free themselves, _ca._ 1000 545 290. Henry I frees a serf, 926 546 291. Henry III frees a female serf, 1050 547 292. Recovery of fugitive serfs, 1224 548 293. Rank of children born of mixed marriages, 1282 549 294. Frederick II confers nobility, _ca._ 1240 549 295. Charles IV confers nobility on a "doctor of both laws," 1360 550 296. Law of the family of the bishop of Worms, 1023 551 297. Charter of the ministerials of the archbishop of Cologne, 1154 563 298. The bishop of Hamburg grants a charter to colonists, 1106 572 299. Privilege of Frederick I for the Jews, 1157 573 300. The bishop of Speyer grants a charter to the Jews, 1084 577 301. Lothar II grants a market to the monastery of Prüm, 861 579 302. Otto I grants a market to the archbishop of Hamburg, 965 580 303. Otto III grants a market to count Berthold, 999 581 304. Merchants cannot be compelled to come to a market, 1236 581 305. Market courts to be independent of local courts, 1218 582 306. Otto I grants jurisdiction over a town to the abbots of New Corvey, 940 582 307. The ban-mile, 1237 583 308.