By the ninth and tenth centuries the Irish cross had reached its full development. It was no longer a sign on a slab, but a beautiful upright sculptured cross, with a circle crowning it like a halo, and suggesting the eternity of the human cross of our Saviour. And here again the art is precisely that of the Italian sculptors. There was a cross of earlier date than either the cross of King Flami at Clonmacnoise, King's County, A.D. 904, or the cross of Mucreadach at Monasterboice, Co. Louth, A.D. 924, in the Roman Forum, of which the shape and ornaments are similar to both of them. The cross of SS. Patrick and Columban at Kells has, too, all the marks of the Comacine work in the eighth and ninth centuries, as one sees it in the oldest churches at Como and Verona, at Toscanella and Spoleto. All these things being considered, I think Irish archæologists would do well to work up the undoubted connection of the early Irish missionaries with Italy, and the influence their travels there had, not only on the religion, but the art of Ireland. They might discover whether St. Columban, when King Agilulf sheltered him at Pavia, took from the artists then at work at the wondrous front of S. Michele, any ideas which he caused to be reproduced in the crosses placed by him to sanctify the open-air worship of his Irish converts; or whether he took a few monkish _Magistri_ skilled in sculpture from his monastery at Bobbio to carve those very crosses, and to build the first stone churches, that now lie in ruins at the feet of the rugged old towers. FOOTNOTE: [123] See Article on the Round Towers in _St. Peter's Magazine_ for May 1898. BOOK III ROMANESQUE ARCHITECTS CHAPTER I TRANSITION PERIOD THE LODGES OF BERGAMO AND CREMONA