The boys learned from Captain Marcus that they had reckoned rightly and that at the moment they were off the port of Amsterdam, Holland. "Our course," the captain explained, "will take us through the English channel into the Atlantic, thence south to the African coast. How far south we shall go, I cannot say at present." He called a midshipman to show the boys to the cabin which was to be their quarters while on the Cumberland. It was very comfortable, but not much like the one they had aboard the Sylph. "However," said Jack, "it's plenty good enough for anyone." For several days the boys were not assigned to duty, Captain Marcus declaring that they needed, a chance to rest up after their strenuous experience with the submarine. He introduced them to all the officers, with whom they speedily became favorites. It was very evident to both the boys that their relationship to Lord Hastings was well known to Captain Marcus and they felt that the many little favors shown them was because of this. They frequently talked of their former commander and friend and their hearts were sad at his untimely end. In spite of their new surroundings, the days that they sailed southward were somewhat monotonous, and the boys were more than pleased when the Cumberland put into Lisbon, Portugal, for coal. Here they were given a day ashore and bought a number of things that they greatly needed as all their effects had gone down with the Sylph. Continuing her journey, the Cumberland sailed south through and past the Tropic of Cancer, almost to the equator, without a sign of an enemy. It was in fact just a day's sail from the equator before the Cumberland sighted another ship. Quickly the wireless was put to working and it was found that the approaching vessel was the small British cruiser Dwarf. The cruisers came to anchor a short distance apart and the commanders of the two ships exchanged visits. Upon Captain Marcus' return aboard the Cumberland, both ships immediately got under way, the Dwarf taking the lead. "Something up!" said Jack to Frank, as they stood leaning over the rail. "You are right," replied Frank, "and I'll bet you a little red apple I can tell you what it is." "You can?" exclaimed Jack in surprise. "Let's have it then." "In my spare moments," explained Frank, "I have been making a study of the maps and charts. We are now almost in the Gulf of Guinea. A small but nevertheless very deep, river called the Cameroon, empties into the gulf. Do you follow me?" "Yes, but I don't see what you are driving at." "Well, the Cameroon region is a German possession. Its largest town, several miles up this navigable river, is Duala, strongly fortified. This, if I am not badly mistaken, is our objective point." "Perhaps you are right," said Jack somewhat dubiously, "but won't the forts be too strong for the cruisers?" "Not these, I am sure."