again in you and me, and in those whom we send to the field, that the excellent glory of the Spirit shall shine pre-eminent, and in this hour of world-wide disaster the risen Lord shall again be glorified. Shall we quietly challenge ourselves amid all the awful happenings of to-day? Here are the terms of the challenge. Shall the good soldier of Christ Jesus be overshadowed by the soldiers of the world? Or shall the courage and ingenuities of the world be eclipsed by the heroism and the wise audacity of the Church? Shall we withdraw our army from the field because the war is raging in Europe, or shall we send it reinforcements? Shall we practice a more severe economy and straiten our army's equipment for service; or shall we practice a more glorious self-sacrifice, and make its equipment more efficient? Shall we exalt and glorify our Saviour, or shall we allow Him to be put in the shade? Shall we endure hardness, as good soldiers of Christ, or shall we take to the fields of indulgence, and allow the Church of the Living God to be outshone by the army of the world? Which shall it be? Our holy battlefield is as wide as the world. The needs are clamant. The opportunities of victory are on every side. Our Captain is calling! What then, shall it be? Advance or retreat? What answer can there be but one? Surely the answer must be that we will advance, even though it mean the shedding of the blood of sacrifice. One of our medical missionaries was Dr. Francis J. Hall of Peking, China. He had been graduated with high honours at the Johns Hopkins Medical School in Baltimore, and had consecrated his life to medical missionary work in China, where his large abilities promptly won him wide influence. In 1913 he said to one of his associates: "I have just been called to a Chinese who has typhus fever. Many physicians have died of that disease, but I must go." Two weeks later he was stricken. As he lay dying his mind wandered, and he was heard to exclaim: "I hear them calling, I must go; I hear them calling!" Do we hear them calling? Is the answer "Yes"? Then let us joyfully register a vow that, God helping us, the army of the Lord shall not be maimed because of our indifference, but as good soldiers of Jesus Christ we will, if need be, endure hardness, and give of our possessions, even unto the shedding of our blood. XI THE INVISIBLE COMMANDER