So he went to Ayton, lodging while there with his father's youngest sister, Nancy, who had come thither from Ayton Hill along with her mother, when her brother John was married in 1814, and had remained there ever since. Cairns had not been two months in Ayton before his responsibilities were considerably increased. Mr. Trotter resigned his office, and the heritors asked the assistant to take charge of the school until a new teacher should be appointed. There were between one hundred and fifty and two hundred children in the school; he was the sole teacher, and he was only seventeen. Moreover, some delay occurred before the teacher who had been appointed to succeed Mr. Trotter could come to take up his work. But Cairns proved equal to the situation. The tradition is that his rule was an exceedingly stern one, that he kept the children hard at work, and that he flogged extensively and remorselessly. When the new master arrived upon the scene, he subsided into his original post of assistant. It had been his original intention to go back to the University in November 1836; but as that date approached it became evident that the financial difficulty was not yet removed, so he accepted an engagement to continue his work in Ayton for another year. His stay in Ayton was a very happy one. He liked his work, and had several warm friends in the village and district. Among these were Mr. Ure, the kindly old minister who had married his parents and baptized himself. Then there was Mr. Stark, minister of another Secession church in the village--a much younger man than Mr. Ure, but a good scholar and a well-read theologian. There was also a fellow-student, Henry Weir, whose parents lived in Berwick, and who used often to walk out to Ayton to see him, Cairns returning the visits, and seeing for the first time, under Weir's auspices, the old Border town in which so much of his own life was to be spent. All this while he was working hard at his private studies. To these studies he gave all the time that was not taken up by his teaching. He read at his meals, and so far into the night that his aunt became alarmed for his health. He worked his way through a goodly number of the Greek and Latin classics, in copies borrowed from the libraries of the two ministers; and he not only read, but analysed and elaborately annotated what he read. But in the notes of the books read during the year 1837 a change becomes evident. It can be seen that he took more and more to the study of theology and Christian evidences, and his note-books are full of references to Baxter and Jeremy Taylor, to Robert Hall, Chalmers, and Keith.