"I hear we're having a shot at Constantinople, sir," remarked Farnworth to Dick. "Mr. Devereux has been telling me that we're also going to have a look at Scutari. Won't the Turks have a surprise!" "Naturally," replied Dick. "And we've a lot in our favour. They'll take it for granted that a Russian submarine has been operating from the Black Sea, and consequently they will devote all their energies to preventing her return through the Bosphorus. That will give us a rattling good chance to get back without being detected. By the by, how are you feeling--fit?" "Spiffing!" replied the midshipman. "I really must have a shot for the submarine branch after this. The only thing I feel I want to do is to stretch my legs." "I should have thought you had enough of that when we tramped over the hills from Medjidieh," remarked the Sub. "That's just it--too much at one time and not enough the next. The result is that I'm as stiff as blazes for want of homeopathic treatment." The midshipman, who, like his brother officer, had taken an early opportunity to discard his captured German uniform, was arrayed in a pair of trousers belonging to Devereux--which fitted only where they touched--and a sweater. Yet, strangely enough, the cap lent him by the Acting Sub of the submarine was much too small for him, owing to the fact that his head had not regained its normal size after the blow he had received on the occasion of the "little scrap" in Yenikeui Bay. With some minutes to the good, Parsons re-appeared on deck and reported that the rudder was ready to be shipped. With the aid of half a dozen seamen, the metal plate was whipped on deck and taken aft. Here, by dint of working up to their knees in water, the artificers succeeded in bolting it in position, and the preliminary trial of the actuating rods gave promise of success. "Excellent, Parsons!" declared the Lieutenant-Commander warmly. "I'll take advantage of the first opportunity and report to the Admiral upon your zeal and ingenuity." Ordering the hands to their stations, Huxtable brought the craft awash and had the motors re-started. At a modest five knots, since speed was no object, the submarine resumed her course. Huxtable's plan was to submerge as soon as Prince's Island--one of a group about ten or twelve miles to the south-east of the Ottoman capital--came in sight, and remain on the bed of the sea until daybreak on the following day. Then, taking advantage of the early light, he would approach, with the periscope frequently showing, until he "spotted" his prey--which he hoped would be the recreant German battle-cruiser _Goeben_, or, failing that, the _Breslau_.