"Guess I've struck the wrong sort of scientist, after all!" he muttered, in a disgusted tone.
His companion was quick to prove the accuracy of the Character Marker. Seeing the boy's back turned, he seized a long iron bar that was used to operate the telescope, and struck at Rob so fiercely that had he not worn the Garment of Protection his skull would have been crushed by the blow.  At it was, the bar rebounded with a force that sent the murderous Frenchman sprawling upon the roof, and Rob turned around and laughed at him.
"It won't work, Professor," he said.  "I'm proof against assassins. Perhaps you had an idea that when you had killed me you could rob me of my valuable possessions; but they wouldn't be a particle of use to a scoundrel like you, I assure you!  Good morning."
Before the surprised and baffled scientist could collect himself sufficiently to reply, the boy was soaring far above his head and searching for a convenient place to alight, that he might investigate the charms of this famed city of Paris.
It was indeed a beautiful place, with many stately buildings lining the shady boulevards.  So thronged were the streets that Rob well knew he would soon be the center of a curious crowd should he alight upon them.  Already a few sky-gazers had noted the boy moving high in the air, above their heads, and one or two groups stood pointing their fingers at him.