In leaving Limerick, we closely followed the Shannon, and a magnificent stream it is, lying in wide, lakelike stretches and rippling gently in the fresh sea breeze. The valley here is quite level and covered with emerald verdure to the very banks, between which the river flashes in gemlike brilliancy. It would be a joy to follow the Shannon and the loughs, in which it rests itself at frequent intervals, to its very source, every mile rich in historic interest and storied ruins; but we may go no farther than Killaloe, at the southern end of Lough Derg, about fifteen miles from Limerick. Here is a venerable cathedral church, built about 1150, upon the site of a still older church founded in the sixth century. And it is to this latter time that most authorities refer the stone-roofed chapel or oratory standing near the cathedral. Legend has it that this was built by St. Flannan, who founded the original cathedral; and certain it is that its antiquity is very great. One experiences strange sensations as he stands in this rude, unfurnished little structure. It forcefully brings to him the fact that Christianity and learning are older in Ireland than in England and Scotland; that this chapel was probably built before St. Augustine landed in Kent; that it was from Ireland that Christian missionaries sailed to teach the savage Britons and marauding Picts. We cross the river over a high-arched bridge, near which is an attractive new hotel, for tourists and fishermen are learning of the beauties of the Shannon and Lough Derg. We soon reach Nenagh on the Dublin road, and the graceful church spire at once attracts our attention. We can scarce forbear an exclamation of surprise as we come into full view of the splendid structure, just from the builder's hand. It is truly a poem in gray stone, as fine an example of gothic architecture as we have seen in the Kingdom--proof that the spirit of the old cathedral builders lingers still, at least in Ireland. A young man approaches us as we stand in the churchyard and informs us that the church has just been completed at a cost of fifty thousand pounds. We should have guessed much more, but labor and stone are cheap in Ireland; such a structure could hardly have been erected in America for less than half a million dollars. "And where did all the money come from?" for Nenagh shows little evidence of wealth. "O, they have been long in raising it and much of it came from America." [Illustration: ANCIENT ORATORY, KILLALOE.]