Mr. and Mrs. Muller, landing at Quebec, thence went to the United States, where, during ten months, his labours stretched over a vast area, including the States of New York, New Jersey, Massachusetts, Pennsylvania, Maryland, District of Columbia, Virginia, South Carolina, Georgia, Florida, Alabama, Louisiana, and Missouri. Thus having swept round the Atlantic sea-border, he crossed to the Pacific coast, and returning visited Salt Lake City in Utah--the very centre and stronghold of Mormonism--Illinois, Ohio, etc. He spoke frequently to large congregations of Germans, and, in the Southern States, to the coloured population; but he regarded no opportunity for service afforded him on this tour as so inspiring as the repeated meetings with and for ministers, evangelists, pastors, and Christian workers; and, next to them in importance, his interviews with large bodies of students and professors in the universities, colleges, theological seminaries, and other higher schools of education. To cast the salt of the gospel into the very springs of social influence, the sources whence power flows, was to him a most sacred privilege. His singular catholicity, charity, and humility drew to him even those who differed with him, and all denominations of Christians united in giving him access to the people. During this tour he spoke three hundred times, and travelled nearly ten thousand miles; over one hundred invitations being declined, for simple lack of time and strength. After a stay in Bristol of about two months, on September 5, 1878, he and his wife began the fifth of these missionary tours. In this case, it was on the Continent, where he ministered in English, German, and French; and in Spain and Italy, when these tongues were not available, his addresses were through an interpreter. Many open doors the Lord set before him, not only to the poorer and humbler classes, but to those in the middle and higher ranks. In the Riviera, he had access to many of the nobility and aristocracy, who from different countries sought health and rest in the equable climate of the Mediterranean, and at Mentone he and Mr. Spurgeon held sweet converse. In Spain Mr. Muller was greatly gladdened by seeing for himself the schools, entirely supported by the funds of the Scriptural Knowledge Institution, and by finding that, in hundreds of cases, even popish parents so greatly valued these schools that they continued to send their children, despite both the threats and persuasions of the Romish priests. He found, moreover, that the pupils frequently at their homes read to their parents the word of God and sang to them the gospel hymns learned at these schools, so that the influence exerted was not bounded by its apparent horizon, as diffused or refracted sunlight reaches with its illumining rays far beyond the visible track of the orb of day.