The work of Cosmas immediately obtained great and deserved success, and its popularity continued for a very considerable period. This is proved by the very numerous MSS. of the _Chronicon Boemorum_ that are still in existence. It is therefore not surprising that Cosmas found many imitators and continuators. They belonged, as he had, to the ecclesiastical calling, and, like him, wrote in Latin. The works of these writers are of interest only to students of Bohemian history; it will therefore here be sufficient to mention a few of the most important chronicles. The earliest of these chroniclers is the writer known to us as the "Canon of Vyšehrad;"[20] his chronicle continues the work of Cosmas from the year 1125, and ends with the year 1142. Another also anonymous chronicler is the "Monk of Sazava." He has incorporated the whole of Cosmas' chronicle with his work, but has added many interesting facts, some of which refer to his own monastery. The monastery on the Savaza had, since the year 1096, been in the hands of friars who used the Latin ritual, but our author relates the foundation of his abbey by St. Prokop, and the subsequent disputes between the German and Bohemian monks (so vividly described in the _Legend of St. Prokop_[21]) with an impartiality that deserves the highest praise. From the end of the year 1125, with which Cosmas' chronicle ends, to the year 1162, the last of which his own work treats, the monk of Sazava of course writes more independently. His work is on the whole trustworthy, and he often writes of contemporary events as an eye-witness. It is, however, to be regretted that the annals of the last years, when the monk no longer had Cosmas for a guide, are written in a briefer, more succinct manner than the earlier parts of the book, for the writer is here dealing with some of the most obscure years of Bohemian history. Several minor chronicles, also written in Latin, and probably by ecclesiastics, are also to be counted among the continuations of Cosmas' work. Such chronicles are that of Vincent, canon of Prague, dealing with the years 1140 to 1167, and that of Gerlach or Jarloch, abbot of Muhlhausen. Jarloch's chronicle begins with the year 1167, and the existent portion ends with the year 1198. It is, however, probable that he continued his work to a far later date, perhaps nearly up to the time of his death, which only occurred in 1228. After the year 1198 we have no knowledge of Bohemia from the writings of native authors during a considerable number of years. Somewhat later we find the chroniclers Peter of Zittau, abbot of Königraal, and Francis, provost of Prague; the work of the former writer deals with the annals of Bohemia from 1253 to 1338, while the work of Francis, beginning with the year 1333, carries on the history of Bohemia up to the year 1362.