"I know there are twenty in the timothy meadow," said Donald, "because father always calls it the twenty-acre lot." "Write it down on the map, Frank," said Uncle Robert. "How much in the clover field?" "It seems about half as large as the timothy meadow," said Frank. "That's right," said Mr. Leonard; "it is." "There are twenty acres in the wood lot, aren't there, father?" asked Frank. "It isn't quite so wide, but it is longer than the timothy meadow." "Yes," said Mr. Leonard, "there are twenty acres there; and it is as fine woodland as any I know." "There are ten acres in the orchard," said Frank; "and the cornfield is the largest of all." "That must be thirty acres," said Donald. "I remember when father made the pasture smaller, so that we could have more corn." "Yes," said Frank; "and that left ten in the pasture. I remember. And there are fifteen acres each in oats, wheat, and rye; but I don't know how large the potato field is. It is smaller than the others, though--it must be about ten." "Right again," said Mr. Leonard. [Illustration: (figures, addition, subtraction)] "Now we have it all but the yard and garden," said Uncle Robert. "Does any one know how much land they cover?" The father and mother looked on smiling, but said nothing. "It's all the rest of the farm, anyhow," said Susie. "Oh, I know how to find out," said Frank. "We know the whole farm is one hundred and sixty acres. We can add all these figures, and the difference between that and one hundred and sixty will be what's in the yard and garden." So he added all the numbers together and found them to be one hundred and fifty-five. "Yes," exclaimed Donald; "and five more would make it one hundred and sixty." "Then there must be five acres in the yard and garden." said Susie, "Write it down. Frank." "There," said Frank, looking at his work with some pride. "It's all in. Now shall I draw it again and make the lines straighter?" [Illustration: Map of the farm.] "Oh, no; this tells the story very well," said Uncle Robert. "The next time we will measure it off, and make it more carefully." "Not so bad," said Mr. Leonard, as Frank showed him the drawing. "I think it is very good for a first time," said Mrs. Leonard, with an encouraging smile. "With a little practice, my boy, I believe you would draw well." "Mother always believes we can do things," said Frank, laughing. "Tell me more about the river," said Uncle Robert. "Our side is bottom land," said Frank; "but across the river the bank is high and steep. Farther down it is just the other way. The steep bank is on this side, and the low land is opposite." "The river bends the other way down there," said Donald. "I see," said Uncle Robert. "How high is the bank?" "I don't know," answered Frank. "How high is it, father?" "About twenty feet," said Mr. Leonard. "Do you go on the river much?" asked Uncle Robert. "Oh, yes," said Donald. "We have an old boat, and we have been miles on it."