“Our ordnance will prevent that,” said I.

“I think the Governor must himself expect to receive ordnance from some quarter,” said de Vilela, “otherwise the success of the siege he must know is impossible.”

Grace O’Malley and I looked at each other, the same thought in our minds. There was only the one way by which there was any probability of his obtaining heavy pieces, and that was over sea.

Did Sir Nicholas reckon on the support of a heavy ship of war, and was he now quietly looking for its arrival? Had he foreseen, or, at least, provided against the failure of the plot of the kernes?

That seemed very likely, and the more I thought of it the more likely did it seem. I now realised, as I had not done before, the seriousness of our situation.

“That must be it,” said Grace O’Malley. “That must be it. He is not a man given to slackness, but he is perfectly aware that he can now effect nothing unless he has cannon, and so he tarries until his ordnance comes. Doubtless he has arranged that a war-vessel shall meet him here, and, if that is how the matter stands, it may arrive very soon.”

“What you have conjectured,” said, de Vilela, “will, I think, prove to be correct.” And I also said that her words expressed my own opinion.

Now, the three great galleys lay in the harbour at Clare Island, and as Grace O’Malley had withdrawn most of their crews they were without sufficient defenders, and might be easily taken and destroyed.

“The galleys must at once be brought over here,” said she with decision to me, “or better still, if it be not too late, sailed into Achill Sound, and hidden away in one of its many bays. This very night, as soon as the darkness has fallen, you, Ruari, must take as many men as can be got into the boats we have here, and make for Clare Island with all speed. When you have reached the island, do with the galleys as seems best to you.”