CHAPTER XV
"THE SILVANDOS"
"I declare!" exclaimed Ralph Fairbanks.
"For mercy's sake!" echoed Fred Porter.
Both stood spellbound just within the grounds of the Fairbanks' home, where they had arrived. Over towards the dividing lot line of the next door neighbor, their eyes had lit upon an unusual and interesting scene.
Two figures were in action among the branches of the great oak tree. They were boys, and their natural appearance was enough to attract attention. They were leaping, springing, chasing one another from branch to branch, with a remarkable agility that made one think of monkeys and next trained athletes.
"Who are they, anyway?" demanded Fred.
"They are new to me," confessed the young engineer.
The two strangers were about of an age, under sixteen. It would puzzle one to figure out their
