“A brig on the port-bow,” said the lieutenant.

The captain sprang upon the bulwarks and held on by the mizzen-shrouds, a strange little figure with flying skirts and puckered eyes.  The lean lieutenant craned his neck and whispered to Smeaton, the second, while officers and men came popping up from below and clustered along the weather-rail, shading their eyes with their hands—­for the tropical sun was already clear of the palm trees.  The strange brig lay at anchor in the throat of a curving estuary, and it was already obvious that she could not get out without passing under the guns of the frigate.  A long, rocky point to the north of her held her in.

“Keep her as she goes, Mr. Wharton,” said the captain.  “Hardly worth while our clearing for action, Mr. Smeaton, but the men can stand by the guns in case she tries to pass us.  Cast loose the bow-chasers and send the small-arm men to the forecastle.”

A British crew went to its quarters in those days with the quiet serenity of men on their daily routine.  In a few minutes, without fuss or sound, the sailors were knotted round their guns, the marines were drawn up and leaning on their muskets, and the frigate’s bowsprit pointed straight for her little victim.

“Is it the Slapping Sal, sir?”

“I have no doubt of it, Mr. Wharton.”

“They don’t seem to like the look of us, sir.  They’ve cut their cable and are clapping on sail.”

It was evident that the brig meant struggling for her freedom.  One little patch of canvas fluttered out above another, and her people could be seen working like madmen in the rigging.  She made no attempt to pass her antagonist, but headed up the estuary.  The captain rubbed his hands.

“She’s making for shoal water, Mr. Wharton, and we shall have to cut her out, sir.  She’s a footy little brig, but I should have thought a fore-and-after would have been more handy.”

“It was a mutiny, sir.”

“Ah, indeed!”

“Yes, sir, I heard of it at Manilla:  a bad business, sir.  Captain and two mates murdered.  This Hudson, or Hairy Hudson as they call him, led the mutiny.  He’s a Londoner, sir, and a cruel villain as ever walked.”

“His next walk will be to Execution Dock, Mr. Wharton.  She seems heavily manned.  I wish I could take twenty topmen out of her, but they would be enough to corrupt the crew of the ark, Mr. Wharton.”

Both officers were looking through their glasses at the brig.  Suddenly the lieutenant showed his teeth in a grin, while the captain flushed a deeper red.

“That’s Hairy Hudson on the after-rail, sir.”

“The low, impertinent blackguard!  He’ll play some other antics before we are done with him.  Could you reach him with the long eighteen, Mr. Smeaton?”

“Another cable length will do it, sir.”

The brig yawed as they spoke, and as she came round a spurt of smoke whiffed out from her quarter.  It was a pure piece of bravado, for the gun could scarce carry halfway.  Then with a jaunty swing the little ship came into the wind again, and shot round a fresh curve in the winding channel.