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"The term ship, as usually applied, has reference to a vessel furnished with a bowsprit and three masts -- a mainmast, a foremast and a mizzenmast; and these three masts are each composed of three parts, namely, a lowermast, a topmast, and a topgallant mast."
"The bowsprit is that mast which projects forward from the bow, isn't it?"
"Yes. In small vessels the cutter and the sloop have single masts, the difference being that in the cutter the jib-boom has no stay to support it."
"What's the difference between the jib-boom and the bowsprit; they both project out from the bow of the vessel?"
"The bowsprit projects out only a little forward of the bow, and the jib-boom is attached to the forward end of the bowsprit."
"Well, if we are to have only one mast, should we have a bowsprit?"
"It is not necessary, for the reason that in a small boat the boom, as it is called, to stretch the foot of the sail, runs out directly from the foot of the mast to which it is pivotally hinged."
"Then it would be better to have a single mast and a triangular sail, one side of the sail to be attached to the mast, and one of the other sides to the boom?"
"Yes; excepting that the sail must not be attached to the shaft, but to a cable which is run up the mast."
As the vessel was intended not for speed, but for safety and for ease of management, it was finally decided that the mast should be twenty feet long, and the boom sixteen feet, thus giving a sail area, approximately, of 150 square feet.
Chapter XVI
Discovery Of The Savages' Huts
While it was true that up to this time they had indirect evidence only of the existence of human beings on the island, several events occurred, at this time, which not only pointed more clearly to such a condition, but they began to feel that leaving the Cataract would be a hazardous thing.
The first incident occurred during one of the hunting expeditions in which the boys engaged. It had been their custom to penetrate the forest below the South River, not very far, it is true, but the sport there was most exhilarating to them after each week's work.
The Professor had always encouraged this. "You have not taken your usual weekly outing," he remarked, "and I feel we ought to have some wild game. If you have time, on your next trip, make it a point to explore the region to the south and west of the falls."
"That section interests me also," answered George. "I have often wished we could go down near the mountain range."
"Couldn't you go with us?" interposed Harry, "and let us make a day of it?"
"I should like to do so," he replied. "But I have good reason for declining at this time, on account of some special work which is attracting my attention, particularly in preparing the instruments we shall need on our voyage."
"That is true," answered George. "But we shall certainly start early enough in the morning to enable us to visit that section, and go far enough to get some idea of what it looks like near the mountain."
"It would be a good idea," suggested Harry, "to take the team along, as far as the river, at any rate, and that will give us an opportunity to ride going and coming. In that way it will help us."
"Yes; and to carry the game," said George, with a laugh.
"If you bag as big game as you did on the last trip, you will need the wagon," replied the Professor.
They were on the way early in the morning, with the guns and plenty of ammunition, and before nine o'clock reached the river. Scarcity of rains had considerably lowered the stream, and they discussed the advisability of fording the team across.
"I am in favor of the idea, if the stream isn't too deep. It seems to be shallow enough."
"Suppose, George, we take out the raft, and try the depth. If we find the animals will have to swim, we had better leave them on this side."
The raft was launched, and it was pushed out with the poles, but before going very far it was seen that the idea was impracticable, and it might be a hazardous operation.
"This won't do. Besides, we may not be able to go into the woods very far, in any event."
"Then," said Harry, "we must select a good place for the team, where they will be in reach of water, and cut plenty of feed for the yaks, as I can see a good half day's sport before us."
"I hope, Harry, we shall not make the mistake of getting lost this time. Let us keep the sun in mind, and watch our bearings at all times."
"The mountains to the south will always be a guide for us. Don't forget that. Then, we shall also know the river is to the north, or in the opposite direction from the mountains."
"So that we may know just where the team is, we must take a note of its location. See the four large trees near the other bank. I think we can remember them, and can see them for some distance."
The raft was pushed across the river, and when it had been properly secured, they began the march directly to the southwest, and within a half hour reached the border line of the great forest.
"Six months ago I would have dreaded to enter such a dense wood as this," said George.
"I was thinking of that, too," replied Harry. "Isn't it singular how we become used to dangers? This is fun now. I can never forget the first long trip we made through the forest to the west of the Cataract. I was frightened at every step, and started at the least noise."
As they entered, the underbrush grew thinner, but the trees were more massive and thicker, and they were so close together, in many places, that little sunlight found its way through the foliage.
"I would like to know, Harry, how we can tell where the mountains are? The trees do not give us an opportunity."
"I suppose we shall have to depend on the sun altogether."
"Yes; it is now forenoon, and we must not forget that the shadow will point in a different direction in six hours from now."
"I have taken note of that," replied Harry. "We are now following our shadow, see? In six hours, which will be about four o'clock, which direction must we go to reach the wagon, judging by the shadow?"
"Let me see; the shadow is to the southwest now. At four this afternoon, it will be about southeast, so, I suppose, we shall have to take a course with the shadow at our right hand."
"Correct! I haven't forgotten that point about the shadows. It's really simple if you stop to reason it out."
Although numerous small animals appeared at frequent intervals, neither had an opportunity to try his skill, because up to that time the boys had been too intent on noting the direction of their route. The course was kept up due southwest, as planned.
"Did you ever see such a gloomy place?" remarked George. "If it wasn't for the chirping of the birds and the chatter of the little animals it would make me feel mighty lonely."
"Ah! there is something!" quietly whispered Harry, as he held out his arm, as though to restrain George. "See that animal slinking away?"
"Where?"
"Almost directly in front. Come closer. See that broken tree?"
"That's an ocelot," exclaimed George.
"Are you sure?"