"It seems to me quite perfect, Steve," was Orissa's final verdict. "There is no question but the Hydro-Aircraft will prove more useful to the world than any simple aëroplane. If we could carry gasoline enough, I would venture across the Pacific in this contrivance. By the way, what am I to do on Monday? Must I carry Sybil in any certain direction, or for any given distance?"

"I'll let Chesty explain that," said Steve, turning to the youthful press agent, who had just then entered the hangar in company with Mr. Cumberford and Sybil.

"Why, er—er—a certain program has been announced, you know," explained Chesty Todd; "but that doesn't count, of course. We'll say that owing to high winds, contrary air currents, or some other excuse, you had to alter your plans. That'll satisfy the dear public, all right."

Orissa frowned slightly.

"You mustn't compromise me in such ways, Mr. Todd," she exclaimed. "The Kane-Cumberford Camp has the reputation of fulfilling its engagements to the letter; but if you promise impossible things of course we cannot do them."

The young man flushed. In the presence of Orissa Kane this big fellow was as diffident as a schoolboy.

"I—I didn't think I promised too much," he stammered. "There are two or three islands off this coast, known as the Coronado Islands. The big one—you can see it plainly from here—is named Sealskin. No one knows why. There are seals there, and they have skins. Perhaps that's the reason. Or they may all be related, and the seals' kin play together on the rocks."

"Be sensible, Chesty!" This from Mr. Cumberford, rather impatiently.

"I'm quite sensible of Miss Kane's annoyance," resumed Mr. Radley-Todd, "but I hope she will find her task easy. She has merely to fly to Sealskin Island, a dozen or fifteen miles—perhaps twenty—and alight on the bosom of the blue Pacific. Mighty poetical in the advertisements, eh? Then she'll ride back in motor boat fashion. When she approaches the shore she is to mount into the air again, circle around the hotel and land on the aviation field before the grand stand. If any part of this program seems difficult, we can cut it out and tell the reporters——"

"Steve," interrupted Orissa, "can I rise from the water into the air?"