Dmitry Konstantinovich in 1377. The original text he used was a codex (since lost) compiled for the Grand Duke Mikhail of Tver in 1305. The account continues until 1305, but the years 898–922, 1263–83 and 1288–94 are missing for reasons unknown. The manuscript was acquired by the famous Count Musin-Pushkin in 1792 and subsequently presented to the National Library of Russia in Saint Petersburg. Hypatian Codex The Hypatian Codex dates to the 15th century. It was written in what are today Ukrainian lands and incorporates much information from the lost 12th-century Kievan Chronicle and 13th-century Galician–Volhynian Chronicle. The language of this work is the East Slavic version of Church Slavonic language with many additional irregular east-slavisms (like other east-Slavic codices of the time). Whereas the Laurentian (Muscovite) text traces the Kievan legacy through to the Muscovite princes, the Hypatian text traces the Kievan legacy through the rulers of the Halych principality. The Hypatian codex was rediscovered in Kyiv in the 1620s, and a copy was made for Prince Kostiantyn Ostrozhsky. A copy was found in Russia in the 18th century at the Ipatiev Monastery of Kostroma by the Russian historian Nikolai Karamzin. Numerous monographs and published versions of the chronicle have been made, the earliest known being in 1767. Aleksey Shakhmatov published a pioneering textological analysis of the narrative in 1908. Dmitry Likhachev and other Soviet scholars partly revisited his findings. Their versions attempted to reconstruct the pre-Nestorian chronicle, compiled at the court of Yaroslav the Wise in the mid-11th century. Composition The organization style and the narrative flow of the Primary Chronicle exhibit visible signs of compilation, where different historical elements are brought together into a cohesive historical account. Studies by a Russian philologist Aleksey Shakhmatov and his followers have demonstrated that the RPC is indeed not a single literary work but an amalgamation of a number of preceding accounts and documents. In compiling the Chronicle, some of Nestor's original sources definitely included but were not limited to: the earlier but now lost Slavonic chronicles the Byzantine annals of John Malalas, a Greek chronicler, who in 563 produced an 18 book work of intertwined myth and truth the Byzantine annals of George Hamartolus, a monk, who tried to adhere strictly to truth, and whose works are the unique contemporary source for the period 813–842 byliny, which were traditional East Slavic oral epic narrative poems Norse sagas several Greek religious