WILL lost no time in getting off his clothes. He felt hot and fishy, and the cool, tawny ripples allured him. Reube tested the anchor to see that the Dido held fast, and then began more slowly to undress. The anchor had been dropped not more than thirty or forty feet from the sand spit, but the boat had swung off before the light breeze till the distance was increased to a score of yards.

“That’s quite a swim for me, Will,” said Reube, doubtfully, eyeing the tide.

“Nonsense! You can swim twice as far as that if you only think so,” asserted Will with confidence. “By the way, I wonder what makes you such a duffer in the water. That’s your weak point. I must take you in hand and make a water dog of you.”

“I just wish you would,” said Reube. “I don’t seem to really get hold of myself in the water. I have to work frightfully hard to keep up at all, and then I’m all out of breath in less than no time. Why is it, I wonder?”

“Well,” answered Will, “we’ll see right now. You swim over to the bar yonder, and I’ll stand here and watch your action. I fancy you don’t use your legs just right.”

“It’s too far. Pull her in a little way,” urged Reube.

Laughingly Will complied. He pulled on the rope till the Dido was almost straight above the anchor. Then Reube slipped overboard with an awkward splash and struck out for the sand spit.

His progress was slow and labored. His strokes made a great turmoil, but produced little solid result. Will’s face wore a look of amused comprehension, but he refrained from criticism till the swimmer had reached his goal and drawn himself out panting on the sand.

“How’s that?” asked Reube.

“O, it’s all wrong! If it was anyone less obstinate than you he wouldn’t keep afloat half a minute struggling that way,” answered Will. “But wait a moment and I’ll show you what I mean.”