Now, at what time do you propose to start?" "About half-past nine to-night," answered Smellie. Old Mildmay referred to a book by his side, and then said: "Ah, then you will have about two hours' ebb to contend with the last two hours of the ebb-tide. Now let me see," and he produced a sheet of paper on which were some calculations, evidently the result of his observations whilst "Sshing."