During all these years the demand for medical treatment, and the opportunity which its exercise brings, had been constantly growing. I made, for example, a second trip to Lampūn, this time at the call of the Chao Uparāt of that city. The poor man had consumption, and at first sent to me for some foreign medicine, thinking that would surely cure him. Judging from his symptoms as reported, I sent word that I could not cure him; that the soothing mixture which I sent was sent in hope that it might give him a few nights’ rest; but that was all I could do. Presently he sent an elephant with a most urgent appeal that I come to see him. I was glad of the call, for it gave me the opportunity of directing a dying man to something even more urgently needed than medicine. I spent a few days with him, and visited all of the leading families and officials of the place, establishing most valuable and friendly relations with them. Long before this time, both the demand for medical treatment and the responsibility involved far exceeded what any person without complete professional training could undertake to meet. We had urged upon our Board the claims of our mission for a physician. The following touching appeal, which appeared in the _Foreign Missionary_ for March, 1870, was made by Mr. Wilson not long after the death of his son Frank. After sending an earnest appeal from Nān Inta for helpers, Mr. Wilson says: “Of course Nān Inta’s call for help includes in it a Christian physician. Who will respond? I am convinced there are many young men in the medical profession whose love for Jesus and whose sympathy with human sufferings are strong enough to bring them all the way to Chiengmai, if they will but yield themselves to this constraining influence. Christian physician, you are greatly needed here. The missionary’s family needs you. This suffering people needs you. You were needed months since, when a voice so sweet and full of glee was changed to piteous shrieks of pain. You were not here to give relief; and if you now come, it will not greet you, for it is hushed in death. You are needed here _now_. A plaintive cry comes to me as I write. It is the voice of our dear babe, whose weak condition fills our hearts with deepest anxiety. May I not interpret this plaintive cry as addressed to you? It is the only way that M. has of saying to you, ‘Come to Chiengmai.’ When you arrive, she may be sleeping beside her little brother. But you will find others, both old and young, whose pains you may be able to soothe, and whose souls you may win from the way that leads to eternal death.”