“Good morning, Mr. Applegate,” the boys chorused, and their father added, “You see we’re on the job. For a couple of moments we thought we had found your stolen property.”
Hurd Applegate’s face took on a stern look. “You didn’t find my securities,” he said, “but maybe you have found a clue to the thief. Robinson buried that chest full of bulbs. That’s what he’s done with Adelia’s jewelry and my securities! He’s buried them some place, but I’d be willing to bet anything it wasn’t on the grounds here.”
Frank, realizing the man was not in a good humor this morning, tried to steer the conversation away from the stolen valuables. “Mr. Applegate,” he said, “why did Mr. Robinson bury these flower bulbs here?”
The owner of Tower Mansion gave a little snort. “That man’s nutty about unusual flowers. He sent to Europe for these bulbs. They have to be kept in a cool, dark place for several months, so he decided to bury them. He’s always doing something queer like that. Why, do you know what he tried to get me to do? Put up a greenhouse here on the property so he could raise all kinds of rare flowers.”
“That sounds like a swell hobby,” Joe spoke up.
“Swell nothing!” Mr. Applegate replied. “I guess you don’t know how much greenhouses cost. And besides, growing rare flowers takes a lot of time. Robinson had enough to do without fiddling around with making great big daisies out of little wild ones, or turning cowslips into orchids!”
Frank whistled. “If Mr. Robinson can do that, he’s a genius!”
“Genius-that’s a joke!” said Mr. Applegate. “Well, go on with your digging. I want this mystery cleared up.”
It was decided that Mr. Hardy, with his superior powers of observation, would scrutinize the ground near both towers. Wherever it looked as if the ground had been turned over recently, the boys would dig at the spot. The chest of flower bulbs was carefully replaced and the dirt shoveled over it.
“Here’s a place where you might dig,” Mr. Hardy called presently from the opposite side of the old tower. When the boys arrived with their spades, he said, “I have an idea a dog dug up this spot and probably all you’ll find is a beef bone. But we don’t want to miss anything.”