“Open membership” had few advocates during the period under consideration, but there had already begun to be lively discussion of baptism in relation to the problem of union. When Thomas Campbell wrote the _Declaration and Address_—the event marked by the 1909 centennial as the beginning of the Disciples—he had not yet adopted the immersion of believers as part of the basis of union and communion. But after that practice was adopted by the Brush Run Church, it became an integral part of the program of the Campbells and it was a pivotal point in Scott’s technique of evangelism. The “Christians” in Kentucky generally practiced immersion but considered it a matter of opinion and did not insist upon it. Those who merged with the Disciples yielded on this point and became strict immersionists. Campbell’s reply to the “Lunenburg letter” showed that he regarded the pious unimmersed as Christians. Later developments showed that he would also commune with them as Christians. But he would not have favored admitting them as members, even if such a proposal had been made. The first Disciple to argue for the admission of the unimmersed was Dr. L. L. Pinkerton, in 1868. Pinkerton, a medical doctor as well as a preacher, was a remarkably free spirit and may be called the first thorough “liberal” among the Disciples. He also challenged the theory of the inerrancy of the Bible, though he probably never heard of the higher criticism. Apparently no other Disciple of his time shared his views about either baptism or the Bible, except John Shackleford, co-editor with him of the _Independent Monthly_, a breezy magazine which lived less than two years. W. T. Moore, a missionary in England for the Foreign Christian Missionary Society, about 1885 became minister of West London Tabernacle, an independent church having many unimmersed members. Defending himself against criticism in a convention to which he was reporting during a visit back home, he suggested that baptism might cease to be a barrier to union if it were agreed to recognize as baptized persons those who had already been sprinkled, whether as infants or as adults, but to practice only immersion thenceforth. In spite of the high regard in which he was held, this opportunistic proposal found little favor. At the Congress of Disciples in 1901, Dr. Moore renewed and elaborated this proposal, that a united church be formed at once with all Christians as members and that only immersion should be practiced thereafter.