“Oh! there are dozens of things Boy Scouts can find to do at a monster Fair like this,” said the patrol leader. “I think some of them are acting as guides to parties of women and children. Others run messages for the department heads, because there must be a tremendous lot of that sort of thing that has to be done here. I saw one batch of scouts carrying a man on a litter, and from that I concluded they must have a scout emergency hospital somewhere on the grounds, where those who have been taken suddenly sick or become exhausted from the heat in the machinery buildings could receive first aid to the injured.”

Andy’s face took on a look of pride. He even tenderly stroked the sleeve of his khaki coat and touched the badge on his lapel as though he considered it a great honor to be wearing that insignia of his rank in the troop to which he belonged.

That is one of the finest things about scout membership; it stimulates boys to aspire to emulate those who are striving to help others, or alleviate suffering in some way.

“We ought to be nearing that building you spoke about, Rob,” Andy remarked, after more time had elapsed. “Seems to me we’ve covered miles since we saw Hiram streaking off for the aviation field and the Hall of Inventions.”

“I think that is it on our left; but to make sure I’ll ask this scout hurrying along as though the whole show would have to close its doors unless he managed to do the important errand he’s sent on.”

“I’ll hang back while you do,” suggested Andy jokingly. “Seems like they think I’m a sort of suspicious looking person, though nobody ever told me so in Hampton.”

The messenger condescended to slacken his speed sufficiently to catch the question which Rob asked. After saluting, as became a fellow scout, he nodded his head in the affirmative, being apparently too winded to say even a single word.

Accordingly the two boys entered the building and threading their way among a multitude of exhibits, with a sprinkling of people examining the same, most of them rather sober-looking in appearance, they managed to find where the offices of the director were located.

“We wish to see Professor Marsh, who is in charge of this building,” was what Rob said to an active little man wearing large glasses, and with all the earmarks of a scientist.

“That happens to be my name, son; what can I do for you?” replied the other, as he bent a pair of exceedingly penetrating eyes upon the scouts.