Grand Rapios, June 28. - lohn A. B. Mead, nepliew of the late Maj. A. B. Watson and one of the most prominent youcg capitalists and business men, comaútted suicide Thursday morning bv taking chloral. A young widow survives him. No motive for the deed is known, and there is much surprise that Mead, who inherited a large sum of money from his unele and who had a splendid business and pleasant home, should have killed himself.