e Jack mopped his steaming forehead again. "That tailor shop beats
the jungle all hollow for heat!" he exclaimed. "What kind of ice cream
do you want, Scouts?"

Betty thought it was time to object. "Oh, Uncle Jack, we've had enough!
You've done too much for us already!" All the same, she enjoyed the ice
cream just as much as the others did, and when Uncle Jack tucked a box
of chocolates under her arm, her cup of joy was full.

"What are you thinking about, Betty?" asked Uncle Jack as the big red
automobile bore them merrily homeward; for Betty had not said a word for
blocks and blocks.

She patted Uncle Jack's arm--the well one--with a grateful smile. "I was
thinking what a perfectly, perfectly _lovely_ day we've had! And
wishing," she murmured, wistfully, "that Mother had been along too."

"Now that part's all taken care of," said Uncle Jack. "Your mother's
going out for a spin with me tonight after Baby's asleep; she couldn't
leave today, she said. She and I will have a good long ride down the
river front in the moonlight. Be sure you get a good sleep tonight, now,
you two; I want you to be in good trim for a little exploring party I'm
planning for tomorrow."

"We'll be up bright and early, ready for anything," Bob told him. "Whew!
but this has been a whirlwind of a day! Glad you're going to take Mother
out--that's the only way she'd get a cool breeze tonight, all right!"

"But it can't be as nice as the roof garden, even then!" cried his happy
twin, as she lifted out her big box of candy and skipped up the front
steps two at a time.

[Illustration]

ADVENTURE NUMBER SIXTEEN

WHERE SAFETY WAS A STRANGER

True to their word, Bob and Betty were up bright and early, ready for
Uncle Jack's exploring trip.

"We're going to visit one of the big wood-working mills," he explained
as they left the house after breakfast. "I'm curious to see the result
of Colonel Sure Pop's Safety patrolling, and it seems to me that will be
about as interesting a shop as we can begin on. It will be fun to see
what they're doing to make it safer for the men--perhaps we can get some
ideas for your outside patrols, Bob."

The twins looked around them sharply as they went into the mill by way
of its lumber yard. "I don't see anything here that looks dangerous,"
was Bob's first remark. "Hold on, though--what about those piles of
lumber? Don't you think they're piled too high to be safe?"

"I can tell you this much," said