The upper part of the tank was a space about four feet in depth and separated from the lower, or main portion by a thick floor. Frank lowered himself through the opening, and he was quickly followed by his brother. They crouched down below the roof of the tank and peered about them in the obscurity.
"It must be in here. There's no other place he could have hidden the stuff," said Frank.
"Let's hunt for it, then. I wish we had brought our flashlights."
Frank, however, had matches. Cautiously, he lit one. Then, crawling on hands and knees, he advanced into the darkness of the tower.
In the faint glow of the match they saw that the place was half-filled with rubbish. There was a quantity of old lumber, miscellaneous bits of iron, battered tin pails, crowbars, and other things piled up pellmell in all parts of the tower.
But there was no sign of hidden loot.
"It must be here somewhere!" declared Joe doggedly. "He wouldn't leave it out in the open. Probably it's in behind all this junk."
Frank held the match. They had to be careful, for the place was as dry as tinder and any negligence might have made the whole place a mass of flame from which there would have
