“But what use would they be?” queried George.

“Well, you must know that this eternal Balkan question is forever bobbing up, and within a few years there have been two serious clashes south of Austria. The first was between Bulgaria, Serbia and Greece against Turkey. They knocked the Sultan’s forces out and took a lot of territory away, which they divided. Then Bulgaria got a notion she could lick the other two and seize more territory; but the shoe was on the other foot, because she had to cry for quarter, and lost a good portion of land that had come to her from Turkey. Ever since there has been bad blood between them all, Rumania also.”

“But how does Austria come in with their petty quarrels?” continued George.

“Do you remember the old fable of the lion and the bear fighting over the game they had taken until they were exhausted, and then the sly fox walking off with it? Well, Austria got hold of a monstrous slice of territory in something the same way—Bosnia and Herzegovina. And there’s a big scheme afoot, I believe, for the Teuton allies to take Serbia and unite the German-speaking countries with Turkey.”

“Oh, I remember reading that Germany had eyes for Persia and all that rich Eastern country,” admitted Josh.

“Well, they are figuring on great things out that way,” Jack continued. “As for these river monitors, they are here to threaten little Serbia with. You see, it’s unfortunate that the capital, Belgrade, lies just across from Austrian heights, and always in reach of hostile batteries.”

“Shucks! that was foolish of the Serbians,” said Josh disdainfully, after the manner of one who knew it all. “Long ago they should have moved their capital to Nisch, nearer the middle of the state. Then they could defend it a heap better.”

As they approached closer to the singular craft anchored there near the shore of the river the boys eyed it curiously. They could see many men aboard, doubtless the crew. There was also an officer using a pair of binoculars, for they could catch the gleam of the sunlight on the glasses as he moved his hands.

Without the slightest warning, when they were almost opposite the anchored monitor, there came a puff of smoke and a reverberating boom. The boys saw the water splash high in the air about twenty feet in front of their little boat, showing that it had not been blank shot after all.