THE MASTER KEY
CHAPTER ONE
ROB'S WORKSHOP
WHEN Rob became interested in electricity his clear-headed father considered the boy's fancy to be instructive as well as amusing; so he heartily encouraged his son, and Rob never lacked batteries, motors or supplies of any sort that his experiments might require.
He fitted up the little back room in the attic as his workshop, and from thence a net-work of wires soon ran throughout the house. Not only had every outside door its
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