[Footnote 11: Ingenious treaties have been written on the origin of the Gothic and Saracenic styles of architecture; but it seems to me impossible to contemplate many Byzantine edifices without feeling persuaded that this manner is the parent of both. Taking the Lower Empire for the point of departure, the Christian style spread north to the Baltic and westwards to the Atlantic. Saint Stephen's in Vienna, standing half way between Byzantium and Wisby, has a Byzantine facade and a Gothic tower. The Saracenic style followed the Moslem conquests round by the southern coasts of the Mediterranean to Morocco and Andaloss. Thus both the northern and the eastern styles met each other, first in Sicily and then in Spain, both having started from Constantinople.] CHAPTER XVIII. Cross the Bosniac Frontier.--Gipsy Encampment.--Novibazar described.--Rough Reception.--Precipitate Departure.--Fanaticism. Next day we were all afoot at an early hour, in order to pay a visit to Novibazar. In order to obviate the performance of quarantine on our return, I took an officer of the establishment, and a couple of men, with me, who in the Levant are called Guardiani; but here the German word Ueber-reiter, or over-rider, was adopted. We continued along the river Raska for about an hour, and then descried a line of wooden palings going up hill and down dale, at right angles with the course we were holding. This was the frontier of the principality of Servia, and here began the direct rule of the Sultan and the Pashalic of Bosnia. At the guard-house half a dozen Momkes, with old fashioned Albanian guns, presented arms. After half an hour's riding, the valley became wider, and we passed through meadow lands, cultivated by Moslem Bosniacs in their white turbans; and two hours further, entered a fertile circular plain, about a mile and a half in diameter, surrounded by low hills, which had a chalky look, in the midst of which rose the minarets and bastions of the town and castle of Novibazar. Numerous gipsy tents covered the plain, and at one of them, a withered old gipsy woman, with white dishevelled hair hanging down on each side of her burnt umber face, cried out in a rage, "See how the Royal Servian people now-a-days have the audacity to enter Novibazar on horseback," alluding to the ancient custom of Christians not being permitted to ride on horseback in a town.[12]