"But you didn't tell us what makes the seeds grow," said Mab, as she
watched her father carefully smooth the soil in the box and then scatter
in the tomato seeds, afterward covering them up with a piece of window
glass.

"I'll tell you as best I can, though no one really knows what is in the
seed to make it grow. Only Mother Nature knows that. But at least we have
a start with our garden," said Daddy Blake, "and to-morrow I'll tell you,
as well as I can, why a seed grows. It is time to go to bed now."

As Hal and Mab started up stairs, thinking what a wonderful thing it was
to have a garden, there came a ring at the front door.

"My! Who can be calling this time of night?" asked Mother Blake, in
surprise.

Hal and Mab wondered too.




CHAPTER III

UPSIDE DOWN BEANS


"Let's wait and see who it is, Hal," whispered Mab to her brother as they
stood on the stairs.