I can tie a rope
to the bow, and we can stand on shore and pull. Those boys will be so
glad to get it back."
"But can we lift out the heavy stones?" asked Amy, in considerable
doubt.
"Of course we can. You know any object is much lighter in water than
out of it, we learned that in physics class, you remember. The water
buoys it up. You can move a much heavier stone under water than you
could if the same stone was on land. We can all try."
"I never could stay under water long enough to get out even one
stone," declared Grace.
"Nor I," added Amy.
"I'll try," spoke Betty-- she was always willing to try-- "but I'm
afraid I can't be of much help, Mollie. And I'm sure I don't want you
to do it all."
"Well, wait until I make another inspection," said the diving girl.
"It may be more than I bargained for. I'll hold my breath longer this
time."
"Do be careful!" cautioned Aunt Kate, coming out from the tent.
"We will," promised Betty.
Again Mollie dived. She had practiced the trick of opening her eyes
under water, and this time she looked carefully over the sunken canoe.
She stayed under her full limit, and when she came up she was panting
for breath.
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