For the sky was now completely overcast with a pall of dense, livid, purplish, slate-coloured cloud that clearly portended a gale; the wind was coming in hot, fierce, intermittent puffs that scourged the sea into miniature foam-flecked waves for a few seconds at a time and then dropped almost to a calm again, and upon looking at the barometer I saw that the mercury had fallen almost half-an-inch since I had last looked at it shortly before the commencement of the fight.
