CHAPTER XVI—AN UNEXPECTED ARRIVAL 

As the night advanced the two girls continued to talk, in low and subdued voices because of their anxiety and growing fears. They kept the candles trimmed, for the light lent them courage. They were not hungry, although they had eaten nothing since noon, but they were beginning to suffer from thirst. 

The baby wakened with shrill screams and the only way to quiet her was to give her the bottle, which was now less than a third full. Mildred was in a quandary whether to withhold the remainder of the food from little Jane, so as to prolong her life as much as possible, or to allow the baby to eat what she desired, as long as any of the food remained. She finally decided on the latter course, hoping the morning would bring some one to their rescue. 

After the little one was again hushed in slumber and cuddled in warm blankets on a seat beside them, the two imprisoned girls renewed their desultory conversation. They realized it must be long after midnight but Mildred avoided looking at her watch because that made the minutes drag so slowly. 

Finally a dull sound from the other side of the wall reached their ears. It seemed that some one was pounding upon the adobe. Both girls sprang to their feet in excitement, their heads bent to listen. The pounding was not repeated but a voice was heard—a far-away voice—as of one calling. 

Mildred answered the cry, at the top of her lungs, and immediately Inez followed with a shrill scream that roused a thousand echoes in the hidden passage. And now Toodlums joined the chorus, startled from her sleep and terrified by the riot of sound. 
what did their light do?
 lent them courage