they began once more to climb, weighty problems once more bore down upon Mary’s tired brain. Would they again climb high and fly too far, then become oxygen-drunk again? She hated to ask Sparky and yet— Thousands of weary miles lay ahead, miles where danger lurked all the way. Then, too, there was their precious cargo. Would it reach its destination safely? “It must,” she whispered. She reached for her mask and then Sparky spoke. CHAPTER V THE LADY IN BLACK CHAPTER V THE LADY IN BLACK “Forget the mask,” Sparky was saying. “We’ve got loads of gas. Dawn will soon be here. We’ll stay five thousand feet. Go back and get a little rest.” Reluctantly she obeyed. Having wrapped herself in the eiderdown robe, she fell fast asleep. But not for long. She awoke with a start from a disturbing dream to find an eerie light shining down upon her. “The ship’s on fire!” she thought tumbling out of her robe. She sprang to a window to whisper, “We have met the dawn.” It was true. The sun, a red disk, rolled along the horizon. The sea and the sky were all ablaze with light. “Sparky!” she exclaimed. “It’s wonderful!” “Is it?” he asked sleepily. “Just another sunrise. That’s all it seems to be. But look, Mary, you’ve been a peach. I suppose I should apologize for being gruff with you back there when we were way up high.” “Oh, no!” Mary exclaimed. “Don’t ever apologize. Your friends don’t demand it, your enemies don’t deserve it. Besides I never quarrel with people when they’re drunk.” A teasing smile played about the corners of her mouth. “Who’s been drunk?” He shot her a quick look. “You think I’m crazy? I’m not a drinking man, but if I were, I’d be plain mad if I drank before a trip like this.” “Oh! So you weren’t drunk?” She threw back her head for a good laugh. “You were all the same.” “What!” Sparky seemed ready to leave the controls to crown her. “Yes, you were drunk and so was I. I was happy and you were sad. That’s how people get when they are drunk.”