“Even if you should fall off you can swim, you know,” added Billy.

“I’ll let Elizabeth try it first,” generously allowed Trixie.

Elizabeth was a splendid swimmer and nothing on or in water could daunt her, so Billy was soon towing her along after his launch.

“Gee! That’s pretty good, Lizzie—for a girl, I mean!” conceded Billy, as he admired the way she stood upright and managed the plane.

“You needn’t have added that last—‘for a girl’; just remember please, that I learned to swim at a much younger age than you ever did!” retorted Elizabeth, ruffled at the hated nick-name.

Then, when every one had tried the aqua-plane Aunt Flo-Flo had something to say. “Won’t you boys come over to Rosemary and hold a Council for some friends of mine?”

What with rifle shooting, aqua-planing, and other intense delights, the boys were not as enthusiastic as usual.

“We’re going to have piles of ice-cream and delicious cakes—to say nothing of other good things,” hinted Elizabeth, her superior knowledge of boys standing her in good stead.

“We-ll—seeing that you all want a Council so much, maybe we can manage,” said Billy, looking at the other boys.

“All right—when?” hastily accepted Aunt Flo-Flo.