outside—not even a dog. Quickly she ran down the street and around the corner, but drew back as the terrific heat struck her face. Heat waves radiated from the cobblestones, and the white stone walls, acting as double reflectors, turned the narrow street into a veritable furnace. But nothing could stop her now. There was something she wanted to find out about the rear wall of the house. Pulling her hat down farther over her face, she squinted her eyes and gazed up at the glaring white walls above her. Quickly she scratched three marks on the wall, one directly below the kitchen window, one beneath the back room window, and the third beneath the mysterious opening; then she paced off the distance between the marks. She was positive now that she could mark the exact spot on the inner side of the wall where the opening should be. Eager to escape from the intense heat, she hastened back to the house. “Whew, it’s hot!” she exclaimed to herself. “These Mexicans show good judgment in sleeping at this time of the day. I don’t blame them in the least.” Fanning herself with her hat, she dropped down on the lower step to cool off a moment. How refreshing was the coolness of the great hall! She wondered how it was possible to be so cool here and so hot outside. She listened intently for a moment, but not a sound came from above. Apparently everyone was still asleep. Softly she slipped up the stairs, step by step, till she caught a glimpse of the sleeping Felipe just as she had left him, his chair tipped back against the wall and his head dropped forward. There was only one more step now. Holding her breath, she lifted her foot; then suddenly there was a loud bumping noise. She was so startled she almost lost her balance. Clutching at the wall, she stared before her. Felipe, roused by some strange instinct, had let his chair down with a bang. “No—no—no! Muy mal [Very bad]!” he exclaimed, pointing to her face. He patted himself on the head and talked rapidly in Spanish in an effort to make her understand that the sun was “bad for the head,” as he expressed it. Much disgusted with herself for getting caught, and eager to escape, she called back “Sí, sí [Yes, yes],” and hastened on to her room. Now that her plan to measure the hall had been interrupted, she would have to wait till a more opportune time for that. Searching for paper and pencil,