"Yes, indeed!" came hissing through the helmet. But I felt it was only the tonic of other women's envy which was keeping her up. I was envying her, too.

Captain March helped Di scramble into her perch. His hand was steady and strong. All his life and skill and manhood were for her. She was tenderly yet firmly strapped into place, and told how she was to hold on, and not to be afraid. There would be some noise, but she mustn't mind; and there was the little apparatus Captain March had invented, by which a passenger could communicate with the conductor. It was something like the bulb you squeeze in a motor car when you want the chauffeur to turn right or left or stop.

"Press once if you're sick of it, and want to come down," said Eagle. "Twice if you want to go higher. There's a whistle close to my ear, so sharp it cuts through the motor noise."

My heart beat almost as fast as if I were in the monoplane myself when Eagle was ready to start, looking like a twentieth-century, leather-masked Apollo starting out to drive his sun chariot up to the zenith and down the other side. The motor purred, and the propeller began to revolve. Diana, tense as a stretched violin string, was hanging on already, like grim death. The two mechanics held the tail of the impatient giant bird, and when Eagle raised one hand, they let go. For perhaps fifty yards the Golden Eagle ran lightly over the turf on her bicycle wheels; then her master tilted the planes, and his namesake soared upward from the ground into the air.

As she went, through the noise she made I heard a shriek from the passenger. Diana's pride, which denied cowardice in the joy of being envied, was forgotten in the primitive emotion of fear. What my sister did I could not see, as the monoplane mounted so quickly; but almost at once I realized that she must have signalled her wish to descend, for the Eagle ceased to soar, dropped, and began gently gliding down. A moment later the great winged form was landing once more close to its own shed.

Father rushed to the rescue of his darling, and Captain March—out of his seat in a second—was unfastening the straps and anxiously extricating Diana from the passenger's perch. I couldn't help feeling ashamed before all the people—scornful or sympathetic, who were looking on—that my sister had shown herself a coward; but I was sorry for her, too. She had quite collapsed, and lay in Father's arms as Captain March unfastened her helmet. I wasn't mean enough to think of rejoicing because, in taking my place away, she had been tried and found wanting. Instead, I found myself really afraid that Captain March might despise the poor girl for the timidity which humiliated him as well as her. But I need not have worried. Pulling off the helmet in that clumsy way a man has with any sort of headgear, the wheel of braided hair Diana wore, wound over each ear in the Eastern fashion that came from "Kismet," was loosened, and a thick plait with an engaging wave at the end fell down on either side of her face. Standing, but supported in Father's arms, her head lay on his shoulder, her eyes closed, long curling lashes resting on marble cheeks. I had never seen her half so beautiful, and Captain March gazed at her as if he would gladly give his life for a reassuring smile.

"Shall I fetch a doctor?" he asked miserably. "There's sure to be one, somewhere around."

Before Father could answer, Di opened her eyes, and Captain March got the smile without paying the price.

"I—I'm all right," she breathed. "So sorry! I wasn't afraid, you know. It was my heart. It seemed to stop."

"Of course you weren't afraid," Eagle encouraged her. "I can never forgive myself for making you suffer."