In the boys’ school in Yezd we had at first a custom of never admitting a child until his father had been seen, and had thoroughly understood to what extent he would receive religious teaching. I used to pledge myself to teach nothing to the boy of Christian tradition apart from what could be found in the _Kalāmu’llah_, that is, the Word of God accepted by the Mohammedans, an expression which was thoroughly understood to include the whole of the Christian Bible. This may seem at first sight to have been merely a quibble, but it must not be forgotten in dealing with the Mussulman, that he is afraid of something like Romanism which will stand out in political as well as religious rivalry to Islam, and that he knows very little of the special tenets of Protestants. My assurance would at least have satisfied him that no attempt would be made to draw the boy into a foreign politico-religious system. The fathers were also told that the boys would be expected to attend prayers. Latterly, as the school and its methods got better known, the necessity for these precautions disappeared. However, when boys at the school came to me, as they frequently did, and told me that they wished to know more about Christianity, I invariably insisted that their fathers or guardians should be informed before they received special instruction. Of course they were always free to come to the Sunday School, which was held for them by my Armenian assistant, and which was attended by a few boys from other schools as well, and occasionally by one or two men. Many of the boys also were extremely regular in their attendance at the services, which we held at first in our houses, and afterwards in a chapel which was built in the hospital. Our school work in Yezd was in every way a thoroughly effective evangelistic agency. It brought me into touch with scores of adults who without it would never have entered my house. By increasing the general business with which I was surrounded, it also greatly facilitated my contact with those who came to me as regular enquirers. All this was additional to the direct effects of the school work, which I have reason to believe were exceedingly satisfactory. Altogether school work proved in Yezd to be one of the most effective forms of missionary effort.