out, "I have it now!"
10. "Do you think so?" asked his mother.
11. "How would you do it," asked Lily.

THIRD READER. 81
12. "First, I would have a big boat brought very close to
the shore, and would have planks laid across, so that the
elephant could walk right into it."
13. "Oh, such a great, heavy beast would make it sink low
in the water," said Lily.
14. "Of course it would," said her brother. Then I would
mark on the outside of the boat the exact height to which the
water had risen all around it while the elephant was inside.
Then he should march on shore, leaving the boat quite
empty."
15. "But I do n't see the use of all this," said Lily.
16. "Do n't you?" cried Teddy, in surprise. "Why, I should
then bring the heaps of silver, and throw them into the boat
till their weight would sink it to the mark made by the
elephant. That would show that the weight of each was the
same."
17. "How funny!" cried Lily; "you would make a
weighing machine of the boat?"
18. "That is my plan," said Teddy.
19. "That was the sailor's plan," said his mother. "You
have earned the orange, my boy;" and she gave it to him with
a smile.
Adapted from A. L. O. E.
3,6.