"What's the matter with the girl?" he asked, in a low tone.

"Matter?" echoed Burton, fixing a keen look on the girl. "By Jupiter, she's got one of her spells again! She hasn't had one of those for a month, now, and I thought they'd about left her for good."

"Is she subject to spells of that kind?"

"She used to be. There's something queer about them, but they don't last long."

"We shouldn't put her on the upper wing, then. There's no seat there, and nothing to hold on to."

The sharp, impatient notes of a trumpet came from the head of the line.

"Well, put her somewhere," said Burton impatiently, and whirled his horse.

"Get on the top plane, Ping," said Matt, hurrying back to the Comet. "Haidee is going to ride on the lower wing with us."

"Awri'," chirped Ping, and McGlory gave him a leg up.