"Considered in the world of physics," began the lordly tones of the Reverend Frederick, "dynamics is that branch of mechanics that treats of the effects of forces in producing motion, and of the laws of motion thus produced; sometimes called kinetics, opposed to statics. It is the science that treats of the laws of force, whether producing equilibrium or motion; in this sense including both statics and kinetics. It is also applied to the forces producing or governing activity or movement of any kind; also the methods of such activity."

The big words rolled out magnificently over the awed gathering, and the minister flattened his chin and rolled his eyes up at the people in his most impressive way.

Margaret's gaze hastily sought the row of rough men on the front seat, sitting with folded arms in an attitude of attention, each man with a pair of intelligent eyes under his shaggy brows regarding the preacher as they might have regarded an animal in a zoo. Did they understand what had been said? It was impossible to tell from their serious faces.

"Philanthropy has been called the dynamics of Christianity; that is to say, it is Christianity in action," went on the preacher. "It is my purpose this morning to speak upon the dynamics of altruism. Now altruism is the theory that inculcates benevolence to others in subordination to self-interest; interested benevolence as opposed to disinterested; also, the practice of this theory."