The Slavs, again, are subdivided into two families: Serbs and Bulgars. And here it is more difficult to distinguish the dividing line, for although there is a marked difference between the characteristics of the two peoples, both physical and temperamental, so nearly alike are their languages that speech forms no sure guide to distinguishing, especially in Macedonia, where dialects vary with a day's travel. The trend of popular feeling seems the only guide. The main population west of the Struma and nearly up to Saloniki are Serb, descendants of the Serbs, who were the inhabitants of the old Serb Kingdom and Empire in that region. In Thrace and east of the Struma the people are Bulgars. Next to the Slavs in importance come the Turks, but these are nowhere found in a solid mass; they are scattered all over the peninsula, and even up into Bosnia and Herzegovina in Austria. Nowhere are they more numerous than in northern Bulgaria, along the banks of the Danube, and in the seaport cities on the Black Sea--Varna and Bourgas. The Bulgarian census figures give their number as about half a million in Bulgaria proper--about a seventh of the total population. Bulgaria, though she suffered most from the oppression and fanatical outbursts of the Turks in the old days, has always been the most tolerant. Because of this there was comparatively little emigration of the Turkish population after freedom gave the Christian majority control. Serbia reports only about 14,000 in her territory, but this is probably an underestimate. Down in Macedonia and southern Thrace the Turkish element is naturally very strong, increasing in mass toward Constantinople. Of the minor race divisions the Albanians deserve first mention, not only because of their number, but because of their being more concentrated within a certain territory, which gives them some political significance. Though they have certain fine primitive qualities, they are not much higher in the scale of intelligence and civilization than were our North American Indians in the early days of our history. It is supposed that they are the direct descendants of the ancient Illyrians; if this be so, they have certainly not developed at all in the past two thousand years. The majority have long since accepted the Mohammedan faith of the Turks, but they differ markedly from the Turks in that they are rough in their manners, less fanatical in matters of religion, though violently prejudiced against all their Christian neighbors. Steady work of any kind is their horror. As a fighting force they can give much trouble, but they are not yet sufficiently developed to form a nation.