“Well, Mr Hawkesley, is there anything in sight, from your perch aloft there, worth looking at?” came floating up to me in the skipper’s voice.

“Yes, sir, indeed there is. There are three craft in the creek away yonder, in the very act of shipping negroes at this moment,” I replied.

“The deuce there are!” ejaculated the skipper. “Which do you think will be the easier plan of the two: to climb the tree, or to make our way through the bush to the spot?”

“You will find it much easier to climb the tree, I think, sir. You can be alongside me in five minutes, whilst it will take us nearly two hours, I should say, to make our way to them through the bush,” I replied.

“Very well; hold on where you are then. We will tackle the tree,” returned the skipper.

And, looking down, I saw him and the second lieutenant forthwith whip out their knives and begin hacking away at a creeper, wherewith to make grummets to assist them in their attempt at tree-climbing.

In a few minutes the twain were alongside me, and—in happy forgetfulness of the ruin wrought upon their unmentionables in the process of “shinning” aloft—eagerly noting through their telescopes the operations in progress on board the slavers.

“They seem very busy there,” observed the skipper with his eye still peering through the tube of his telescope. “You may depend on it, Mr Smellie, the rascals have got wind of our presence in the river, and intend trying to slip out past us to-night as soon as the fog settles down. I’ll be bound they know every inch of the river, and could find their way out blindfold?”

“No doubt of it, sir,” answered the second luff. “But it is not high-water until two o’clock to-morrow morning, so that I suspect they will not endeavour to make a move until about an hour after midnight. That will enable them to go out on the top of the flood, and with a strong land-breeze in their favour.”

“So much the better,” returned Captain Vernon, with sparkling eyes. “But we will take care to have the boats in the creek in good time. You never know where to have these fellows; they are as cunning as foxes. Please note their position as accurately as you can, Mr Smellie, for I intend you to lead the attack to-night.”