Through the glass he beheld a big white vessel very high in the poop. She was veering northward, on a starboard tack against the easterly breeze, and so displayed a noble flank pierced for twenty–four guns, the ports gleaming gold against the white. From her maintopmast, above a mountain of snowy canvas, floated the red–and–gold banner of Castile, and above this a crucifix was mounted.

The Chevalier lowered the glass. 'A Spaniard,' was his casual comment. 'What oddness do you discover in her, Captain?'

'Oh, a Spaniard manifestly. But she was steering south when first we sighted her. A little later she veered into our wake and crowded sail. That is what is odd. For the inference is that she decided to follow us.'

'What then?'

'Just so. What then?' He paused as if for a reply, then resumed. 'From the position of her flag she is an admiral's ship. You will have observed that she is of a heavy armament. She carries forty–eight guns besides stern and forechasers.' Again he paused, finally to add with some force: 'When I am followed by a ship like that I like to know the reason.'

Madame stirred languidly on her day–bed to an accompaniment of deep, rich laughter. 'Are you a man to start at shadows, Captain?'

'Invariably, when cast by a Spaniard, Madame.' Luzan's tone was sharp. He was of a peppery temper, and this was stirred by the reflection upon his courage which he found implied in Madame's question.

The Chevalier, disliking the tone, permitted himself some sarcasms where he would have been better employed in inquiring into the reasons for the Captain's misgivings. Luzan departed in annoyance.

That night the wind dropped to the merest breath, and so slow was their progress that by the following dawn they were still some five or six miles to the west of Portugal Point and the exit of the straits. And daylight showed them the big Spanish ship ever at about the same distance astern. Uneasily and at length Captain Luzan scanned her once more, then passed his glass to his lieutenant.

'See what she can tell you.'