There are two volumes to this Chronicle. Vol.1 deals with secular history and Volume 2 deals with ecclesiastical history.
Chabot (1916) Both Volumes in Syriac with a Preface in Latin - bookmarked to the start of the secular section -
note that pagination for this text is right to left - open access at archive.org
Chabot (1937) Anonymi Auctoris Chronicon Ad Annum Christi 1234 Pertinens -
Latin translation - open access at archive.org - bookmarked to the page which describes the
749 CE Sabbatical Year Quakes
Chronicon anonymum ad annum 1234 (ed. J. B. Chabot, CSCO, Scr. Syri,
36, 155-67).
Hoyland (2011) Theophilus of Edessa's Chronicle and the Circulation of
Historical Knowledge in Late Antiquity and Early Islam. United Kingdom: Liverpool University Press. -
contains translations of Chron. 1234 - open access at archive.org