Church & Dwight Co., maker of Arm & Hammer products such as laundry detergent and toothpaste, on Friday reported a 9% rise in second-quarter earnings on higher sales and said president and chief operating officer Jon Finley has resigned after four months on the job. A statement from Church & Dwight did not say whether it planned to replace Mr. Finley, who was previously a senior vice president of General Mills Inc. Company officials were not immediately available to provide more d...