In 'Our Day in the Light of Prophecy', Spicer wrote that the Gospel in his day had been spread "ninety-five per cent of the inhabitants of the earth." He added: "It was in 1842 that five treaty-ports in China were opened to commerce and to missions-- advance steps in the opening of all China to the Gospel. In 1844 Turkey was prevailed upon to recognize the right of the Moslems to become Christians, reversing all Moslem tradition. In 1844 Allen Gardiner established the South American Mission. In 1842 Livingstone's determination was formed to open the African interior."