discovered her character for themselves.  From that moment I noticed that they seemed to take no heed of each other or of anything else.  They could spare no eyes and no thought but for the slight column-shape astern of us.  Its swaying had become perceptible.  For a moment she remained dazzlingly white, then faded away slowly to nothing in a squall, only to reappear again, nearly black, resembling a post stuck upright against the slaty background of solid cloud.  Since first noticed she had not gained on us a foot.

“She will never catch the Tremolino,” I said exultingly.

Dominic did not look at me.  He remarked absently, but justly, that the heavy weather was in our pursuer’s favour.  She was three times our size.  What we had to do was to keep our distance till dark, which we could manage easily, and then haul off to seaward and consider the situation.  But his thoughts seemed to stumble in the darkness of some not-solved enigma, and soon he fell silent.  We ran steadily, wing-and-wing.  Cape San Sebastian nearly ahead seemed to recede from us in the squalls of rain, and come out again to meet our rush, every time more distinct between the showers.

For my part I was by no means certain that this gabelou (as our men alluded to her opprobriously) was after us at all.  There were nautical difficulties in such a view which made me express the sanguine opinion that she was in all innocence simply changing her station.  At this Dominic condescended to turn his head.

“I tell you she is in chase,” he affirmed moodily, after one short glance astern.

I never doubted his opinion.  But with all the ardour of a neophyte and the pride of an apt learner I was at that time a great nautical casuist.

“What I can’t understand,” I insisted subtly, “is how on earth, with this wind, she has managed to be just where she was when we first made her out.  It is clear that she could not, and did not, gain twelve miles on us during the night.  And there are other impossibilities. . . .”

Dominic had been sitting motionless, like an inanimate black cone posed on the stern deck, near the rudder-head, with a small tassel fluttering on its sharp point, and for a time he preserved the immobility of his meditation.  Then, bending over with a short laugh, he gave my ear the bitter fruit of it.  He understood everything now perfectly.  She was where we had seen her first, not because she had caught us up, but because we had passed her during the night while she was already waiting for us, hove-to, most likely, on our very track.

“Do you understand—­already?” Dominic muttered in a fierce undertone.  “Already!  You know we left a good eight hours before we were expected to leave, otherwise she would have been in time to lie in wait for us on the other side of the Cape, and”—­he snapped his teeth like a wolf close to my face—­“and she would have had us like—­that.”