We now come to the important question--How shall I increase my vocal powers? As is well known, there are two methods of inhaling and expelling the air from the lungs. One is by means of the rising and falling of the ribs. This is called "the costal method." The other is by the contraction and distention of the midriff or diaphragm. The diaphragm is the movable floor to the thorax or box that encloses the lungs. This is called "the diaphragmatic method." Now, since God has furnished us with both methods, He evidently intended that we should use both, as we use our two eyes or our two ears. They are given, not as alternative, but as simultaneous instruments of action. The weakness in many a speaker's voice, its want of volume and its failure when a sustained effort is demanded, is due to the fact that he breathes by means of his ribs alone, throwing all the pressure on the upper portion of the lungs, not asking the large areas to contribute anything. He thus robs himself of breathing capacity, and consequently of voice power. [Side note: Diaphragmatic breathing] To get a perfect mastery over the "diaphragmatic" method and make it as serviceable as possible, practise breathing while lying on your back, filling the lungs to the utmost, and exhausting them as completely as possible. Inhale rapidly and exhale slowly. Then reverse the order; inhale slowly and exhale rapidly. Again let "slow" and "rapid" alternately make both movements. By this exercise you acquire flexibility of the midriff muscles, you enlarge the cubic dimensions of the breathing area, you distribute the burden generally; and when the occasion comes to send your voice over four thousand heads you will discover that the reserve fund of voice and strength acquired by this practice is at your service. This plan bears that highest and safest sanction--_in practical experience it has proved a genuine success_. [Side note: A clergyman's sore throat]