Of course the position of the medical missionary who is invited to the town by those in authority, as is frequently the case, is very different from that of most other missionaries. There may be a real demand for school teaching, but even when school work has been started and placed on a satisfactory footing, it never appeals so generally to the interest of all classes as to be superior to any intrigue that may arise, or to bursts of fanatical bigotry. At the same time the medical missionary who has gone to a new station finds that even when invited he is on trial. When free medicines are given, as on some occasions they have been for a short period, two-thirds of the people throw them away without using them. Even those who have invited him are quite ready to turn against him, at any rate behind his back. These difficulties, although real, are minor ones, and there are very few European doctors, possessed of an ordinary amount of common-sense and a good material equipment, who cannot get over them in a short while. The real danger is lest the missionary by regarding these difficulties as more serious than they really are should become too absorbed in his efforts to overcome them. Medical work is really an enormous power. It may make possible, under God’s providence, steps and measures which would otherwise be utterly impossible. But if it is to be fully used to God’s glory, these God-given powers must be realised, and put forth to their full extent. Medical and school work have one other advantage besides those that have been mentioned, for they enable a class of men to participate in mission work who as ordinary evangelistic missionaries would be useless. In the first place, there is the newly-arrived European, who imperfectly understands the language, and who yet may do more or less effective work while he is still studying, if he is connected with a medical or educational organisation. Secondly, if it were not for schools and medical work it would be exceedingly difficult for the Persian missions to employ natives, except in menial capacities or in positions attended with the gravest peril. Here to my mind we have one of the greatest arguments for medical and school work, and this from the directly evangelistic standpoint. This brings the subject of methods of work in Persian towns like Yezd to a conclusion. It is not impossible to work as a simple evangelist, but it needs certain qualifications and abilities. Generally speaking, the ordinary missionary must be prepared to use both hands and both feet, and to enter in whatever way seems most expedient into the life of the town. There is no room for university work, and technical instruction has not yet been tried, but elementary school work and medical work are both much needed and much appreciated, and they further afford an abundant field for directly evangelistic labour. CONCLUSION.