Bob was getting $6 a week as messenger for Tracey and it pleased his aunt greatly. The next day Tabor gave Bob a statement for Halsey & Co., showing a net profit of over $1,200, which he placed to their credit. Fred and Bob were standing under the gallery of the Stock Exchange in the place allotted to messengers, when Broker Keeley gave a howl and sprang at the throat of Broker Gaines. They fell to the floor. The old man turned his eyes toward Fred. They seemed to pop out of his head for the maniac was choking him. "I can't stand that!" cried Fred, and the next moment both his hands were in Broker Keeley's hair. He let go the old man's throat, and a dozen brokers ran in to separate them and quell the row. Next day Fred said to Bob: "I met Gaines's typewriter just now and she said Mr. Gaines had not been to the office since his row with Broker Keeley. The clerk who is running the office insulted her and she wants to leave." "By George!" answered Bob, "Bryant's girl has just asked me to find a place for her. What did you tell Callie?" "I told her I would look out for her, and I will." During the day Fred got a place for Callie with Broker Tabor, and Bob secured a temporary place for Bertie Clayton in old Broker Bowles's office. The day after the two boys met the girls in a restaurant, and Callie told Fred of a tip she had come across. It was Pacific Mail, and it was going to be cornered. CHAPTER V.--The Typewriter Girl's Tip. Fred and Bob came away from the restaurant with the two girls, going toward Wall Street. Fred asked Callie several questions about the deal she had mentioned. "I'll make a note of what I can find out," she said to him, "and let you know after 3 o'clock." "But be careful and let no one else know it," he replied. "Oh, I can keep a secret even if I am a girl," and she left him on the corner of Nassau and Wall to go to the bank. Fred clutched Bob's arm when the two girls were gone, and said: "Callie says a big corner in Pacific Mail is being made up in Barron's office." "By George! Is it straight, do you think?" "Yes. She says she'll make notes and give 'em to me. She let it out by saying if she had any money laid up she could make a pile out of Pacific Mail. I soon got the whole thing out of her." "When will you see her again?" "After three o'clock." It was a little after three o'clock when Fred saw her come out of the bank. He went to meet her, and she said to him: "Bryant is going to do the buying--begins to-morrow. You won't tell any one that I told you?" "No; that would never do." She lived over on the west side, and had a widowed mother and little brother to support. He walked nearly all the way home with her. Bob went uptown with Gertie Clayton, and did not see Fred again till the next morning. "I am going to buy Pacific Mail, Bob," Fred said to him. "Go ahead then--for Halsey & Company--the whole pile."