“What’s the matter?” cried Chester anxiously.

“I’ve lost my gun,” said the girl.  “And here they come in the window!”

“I’m coming!” cried Chester, and started forward.

But another figure beat him.  It was the giant form of Ivan.

“You stand here,” he said sternly.  “Guard both doors and the windows as you value your lives.  I’ll attend to the others.”

He moved toward the shattered door without another word.

“Where are you going?” demanded Chester anxiously.

Ivan disappeared without making reply.

At that moment one of the men who had succeeded in forcing the rear door came dashing through the house.  He held his revolver ready, but he didn’t see Chester quickly enough.  Chester raised his own weapon and took a snapshot.  The man threw up both arms and staggered back.  Immediately Chester leaped forward and possessed himself of the other’s revolver, which he passed to Helen.

A second form appeared in the doorway and fired at Chester.  But the lad had perceived his opponent just in time to leap back and the bullet went wild.  Bringing his own revolver forward in deliberate aim, Chester dropped the other with a single shot.

“Look!” cried Helen from the window at this moment.

Chester did so and saw the remainder of the Bulgarians coming toward the house at a dead run.  He put his revolver out the window and fired twice.  Helen did the same.

But both had fired too quickly and all the bullets went wide.  The men pulled up under the window, out of the range of fire from within, safely enough, and Chester and Helen could hear them talking.

“We’ll wait here,” said one.  “Somebody’ll show his head pretty quick and when he does, we’ll get him.”

Chester motioned to Helen to move back from the window.

“What are you going to do?” she asked in some anxiety.

“Have you any hot water?” asked Chester suddenly.

“Why, yes,” cried the girl and clapped her hands, “There is a kettle on the stove.”

“You remain here while I get it,” said Chester briefly.

He dashed into the kitchen and was back in a moment with the large kettle of hot water in both hands.  He motioned the girl away from the window.

The lad lifted the kettle to the sill with an effort, and then gauging the position of the enemy by the sound of the voices without, he tilted it over.

Came furious cries of pain from without as the boiling water found its mark.  Then there came a different sort of cry.  Chester looked out quickly.

From the front door dashed Ivan and bore down upon the foe.

CHAPTER XXIV.

Ivan Shows his metal.

Chester had poured the boiling water upon the foe at the psychological moment indeed—­for Ivan had been ready to dash forward at that exact minute and Chester had diverted the attention of the Bulgarians long enough for Ivan to reach them without being discovered.