of the Vikings, who did not, and could not, take ponderous implements like battering rams with them on their raids, and that was by undermining it--digging its foundations so that it would fall. But this would have been a very tedious business, for the foundations of many of the round towers are six and even ten feet below the surface. A few dozen resolute men in a round tower might defy an army of Danes, provided the besieged had enough of food and drink in their stronghold. It must, however, be admitted that the Northmen did sometimes succeed in taking and plundering round towers, but by what means we do not know. Those who maintain that the round towers are pre-Christian structures, and that there is nothing said in Irish annals about their erection, have very little warrant for such an assertion. If they read Lord Dunraven's work on ancient Irish architecture, they will find copies of more than one allusion to their erection from the most authentic Irish annals known to exist. Here is one taken from the _Chronicon Scottorum_, a work of the highest authority and authenticity, compiled about the year 1124. "The great _Cloigtheach_ (or belfry) of Clonmacnois was finished by Gillachrist Ua Maeleoin and by Turloch O'Connor." This entry refers to the year 1120. While speaking of the uses of round towers, the wealth of Irish monasteries, and of Ireland in general in ancient times, it may not be out of place to say that that very wealth proved a curse to the country, for if Ireland had not been so rich in precious metals, the Northmen would probably never have invaded and raided it; or if they did invade it, they would have done so with a view to subjugating it and forming permanent settlements in it, as they did in England and France,--things that might have been, and that probably would have been, of benefit to the country. If Ireland had been conquered by the Northmen they would certainly have destroyed the provincial kingdoms, and have brought the whole island under the sway of one ruler; and whether that ruler was Irish or Norse, it would have been of immense benefit to the country at large. Ancient Irish polity was very good theoretically, but practically it was a frightful failure. The Scandinavian invasions only added to the political confusion of Ireland. They were of benefit to England and France, for they brought an infusion of fresh blood into those countries. But to Ireland they brought destruction and ruin, with only a slight infusion of fresh blood. They made the political confusion of the country more confounded. They robbed it of an immense quantity of its wealth, but worse than that, they destroyed a large part of its literature. The monasteries were not only the repositories of wealth but of books. It was impossible that monasteries could be plundered and burnt without damage being done to the books they contained. There is positive proof in Irish annals that the