[15] Thus O'Curry translates _casair_ as if he had taken it to be _lasair_. O'Grady translates "an overlay of Elpa's gold." CHAPTER XIII ST. PATRICK AND THE EARLY MISSIONARIES Even supposing the Ogam alphabet to have been used in pre-Christian times, though it may have been employed by ollavs and poets to perpetuate tribal names and genealogies, still it was much too cumbrous and clumsy an invention to produce anything deserving the name of real literature. It is, so far as we know, only with the coming of Patrick that Ireland may be said to have become, properly speaking, a literary country. The churches and monasteries established by him soon became so many nuclei of learning, and from the end of the fifth century a knowledge of letters seems to have entirely permeated the island. So suddenly does this appear to have taken place, and so rapidly does Ireland seem to have produced a flourishing literature of laws, poems, and sagas, that it is very hard to believe that the inhabitants had not, before his coming, arrived at a high state of indigenous culture. This aspect of the case has been recently strongly put by Dr. Sigerson. "I assert," said he, speaking of the early Brehon laws, at the revision of which in a Christian sense St. Patrick is said to have assisted, "that, speaking biologically, such laws could not emanate from any race whose brains have not been subject to the quickening influence of education for many generations."[1] The usual date assigned for St. Patrick's landing in Ireland in the character of a missionary is 432, and his work among the Irish is said to have lasted for sixty years, during which time he broke down the idol Crom Cruach, burnt the books of the druids at Tara, ordained numerous missionaries and bishops, and succeeded in winning over to Christianity a great number of the chiefs and sub-kings, who were in their turn followed by their tribesmen.