First, what parts of Arabia are really _accessible_ to missionary operations? (1) The Sinaitic peninsula with the adjoining coast of Hejaz nearly as far as Yanbo; the population is mostly Bedouin but a good centre for work would be the Egyptian quarantine station of Tor in the Gulf of Suez. (2) Aden and the surrounding region under British protection, with a population of perhaps 200,000 souls. (3) The entire south coast from Aden to Makalla and Shehr with its _hinterland_; this region has been freely visited by explorers and travellers, men and women; the people are quite friendly and the natural base of operations would be the town of Makalla. (4) Oman with its coast-towns and hill-country, everywhere accessible; wherever missionaries have tried to enter they have met with a welcome above all expectations. (5) The so-called “pirate-coast” in East Arabia between Ras el Kheima and Abu Thubi; many villages, all under British subsidy and with resident native agents. (6) The islands of Bahrein. All of these regions are outside of _Turkish_ Arabia and are more or less under the influence of Great Britain so that every kind of missionary work is possible. No passports are required for travelling; no special diplomas for the right to practice medicine; no censorship of books; no official espionage or prohibition of residence. In Turkish Arabia the case is different, but it would be very incorrect to say that Turkish Arabia is inaccessible. “The Turks are no doubt,” as General Haig remarks, “a great obstacle, but we must give them their due, and admit that they are not nearly so intolerant as some European States, including Russia.” Only one portion of Turkish Arabia seems, at present, to be wholly inaccessible, namely, the two sacred cities Mecca and Medina. At present, we say, for it does not seem possible that these twin-cities would long remain closed if the church had faith to approach their doors and were ready to enter.