Meanwhile, however, a certain number of the best works of the Irish annalists have been carefully translated and edited by John O'Donovan and others, and are sufficient to enable any one not acquainted with Irish to check the wild speculations of antiquaries of the Vallancy and O'Brien class, and also to form an opinion on the value of the annals themselves, though hardly yet sufficient to enable a stranger to construct a reliable scheme of chronology or history out of the heterogeneous materials presented to him. We must wait till some second Petrie shall arise, who shall possess a sufficient knowledge of the Irish language and literature, without losing his Saxon coolness of judgment, before we can hope to possess a reliable and consecutive account of ancient Ireland. When this is done, it will probably be found that the Irish possess a more copious literature, illustrative of the eocene period of their early history, than almost any other country of Europe. Ireland may also boast that, never having been conquered by the Romans, she retained her native forms, and the people their native customs and fashions, uninterrupted and uninfluenced by Roman civilization, for a longer time than the other countries of Europe which were subjected to its sway. As most important and instructive parts of the Irish annals, it is proposed first to treat of those passages descriptive of the two battles of Moytura[202] (Magh Tuireadh), both of which occurred within a period of a very few years. A description of the fields on which they were fought will probably be sufficient to set at rest the question as to the uses of cairns and circles; and if we can arrive at an approximative date, it will go far to clear up the difficulties in understanding the age of the most important Irish antiquities.