The officers kept on their way until they reached the first Pullman, where they stopped for a minute.

"Are the orders in here?" asked the captain.

"No; the conductor has them. He wouldn't stop the train without I gave them to him."

"Carramba! Why didn't you tell me so before? Go and take them from him and bring them here at once."

"Bueno, Capitan! Will you wait here?"

"Yes, I'll go inside. Hurry."

The lieutenant turned and hurried back. The boys only saved themselves from being detected by throwing themselves flat on the ground.

For a moment the captain remained looking after his companion and then turned and entered the car.

"We must have that order," said Donald.

"We must!" echoed Billie.