Greek hat to buy captives for the Iceland market. A host of Saxons and Britons were brought over by Olaf and Ivar in 871. Almost every king of Norway sailed his fleet into Irish harbours, to drive off the rival Danish merchants, to broaden his traffic, to spy out some new store of gold, to load up with corn, to sweep the cattle down to the seashore for the “strand-hewing” that was to provision his crews with meat, fresh and salt, for their ocean course. Traders bargained then just as they bargain now. There is a harbour of Ardglass on the coast of County Down where a castle was built many centuries ago to protect the commerce of the port. The other day an Irishman repaired its ruins, and for a sign flew from it the flag of one of the Irish lords of the country, the Red Right Hand of O’Neill. At that very moment a light schooner sailed into the offing and at once flew in answer the Danish flag. The vessel was from Marsthal. Getting into port the crew bargained for herrings, counting out a hundred and ninety-five barrels of them by “chequers,” while the Ardglass men checked the number on notched sticks. Neither knew one word of the other’s tongue. So the Danes did business and sailed away, exactly as their forefathers had done a thousand years ago. Between plundering and trading and marriages and alliances Norse and Irish got to know each other well, as we may see by the story of king Olaf Tryggwason and his dog. Olaf the Magnificent, most glorious and far-shining of sea-kings, famed beyond all others for the surpassing perfection of his warships, being married to Gytha sister of Olaf Kuaran king of Dublin, abode in England and occasionally in Ireland. “He happened once,” says the Saga, “to be present in Ireland with a large naval force engaged in war. A foray to get stores being necessary, the men went on land and drove towards the shore a multitude of sheep and cattle; and there followed them a yeoman, who begged Olaf to give him back his cows from among the flock that they were driving off. King Olaf answered: ‘Take your cows if you know them, and are able to separate them from the rest without delaying our journey; but, I think, neither you nor any other man can do that feat among so many hundred cattle as are in the drove.’ The yeoman had a big cattle dog with him. So he sent the dog among the herd as they were driven off together, and the dog ran up and down among them all, and soon picked out and put aside as many of the man’s cattle as in the yeoman’s opinion were there. As these were all marked with one and the same mark, it was evident that the dog must have had a perfect knowledge of them. Then the King said: ‘Wonderfully clever is your dog, yeoman; will you give him to me?’ And the man answered: ‘I will gladly do so.’ Then the King straightway, in return, gave the yeoman a large gold bracelet, and promised him his friendship therewith. This dog, the best and most sensible of all dogs, was named Wigi, and Olaf had him for a long time