"I think Officer 4434 can devise a way for that. He has had harder tasks and won out. Now, hurry down with the machine. It is a bit heavy. You had better take it in a taxicab. You will spend all your money on taxicabs, my boy, I am afraid." "Well, sir, a little money now isn't important enough to worry about if it means happiness for the future--for us all." Mary's face reddened, and she dropped her eyes. There was an understanding between the three which needed no words for explanation. So it is that the sweetest love creeps into its final nestling place. "God bless you, my boy. I'm an old man and none too good, but I shall pray for your success." "Good bye," said Bobbie, as he and Mary left with the mechanism. Bobbie stopped the taxicab which carried them half a block east of the office building which was their goal. "Mary, I will take this machine up on the floor above Trubus' office, and hide it in the hall. Then you go to your place in the office and I will manage a way to draw Mr. Trubus out in a hurry. We will work together after that, and spread the electric trap for him." Mary went direct to the office, where she found Trubus storming about angrily. "What do you mean by staying nearly two hours out at luncheon time?" he cried. "I am very busy and I want you to be here on duty regularly, even if my wife did foolishly intercede in your behalf, young woman." "I am sorry--I became ill, and was delayed. I will not be late with you again, sir." The president of the Purity League retired to his sanctum, slightly mollified. Mary had not been at her post long when a messenger came in with a telegram. "Mr. Trubus!" he said, shoving the envelope at her. She signed his book, and knocked at the door. There was a little delay, and the worthy man opened it impatiently. "I do not want to be interrupted, I am going over my accounts." She handed him the telegram, and he tore it open hastily. "What's this?" he muttered in excitement. Then he went back for his silk hat, and left, slamming the door of his private office and carefully locking it. "I wonder what took him out so quickly?" thought Mary. But even as she mused Bobbie Burke came into the outer office, with the precious machine wrapped in yellow paper. "What took Trubus out, Bobbie?" she asked, as she helped him arrange the machine behind the wastebasket, near the telephone switchboard. "Just a telegram, signed 'Friend,' advising him to watch the men who came in the front door, downstairs, for ten minutes, but not to visit Clemm's office. That will keep him away, and he can't possibly guess who did it." "But, look, Bob, he has locked his door with a peculiar key. If you force it he will be able to tell."