Professor Hiram Dexter put the finishing touches on his toilet by tenderly brushing out his crisp, black Vandyke beard. He stepped back to look at himself in the mirror. He had to stoop a little for even the full-length glass was short for his six feet four inches of gangling height. Nevertheless he regarded his image with undiluted satisfaction. "Ah, Dexter," he sighed, "you're a dashing rascal." Humming tunelessly, for he was quite tone-deaf, he picked up a book titled, "The Nutritive Quotient