If the sedan chair bearers happen to pass with some fat man for a passenger, the whole street is in an uproar of English comment meant to be humorous. Then the ordinary American visitor seems to think it his prerogative to point at the foreign contingent and say things aloud about them that would secure physical retaliation if the object of the remark were a citizen of the United States instead of a guest of the nation. _CHAPTER XI_ A STARTLING MYSTERY The next day was what the boys called African day; that is, they intended to see all that was to be seen from Dahomey to Nubia and Soudan. Fanny was to spend the morning in the panoramas of the Burnese Alps and the volcano Kilaueau. At noon she would meet them at one of the inns. The boys wandered about for some time in search of adventure. Over in the street of Cairo there were two peculiar structures that looked like inverted soup-bowls. There was a three cornered aperture In the front of each where men and women could be seen crawling in and out. Over one of these doors was a placard on which was painted, "See the 18 months old Soudanese baby dance. The only dance of the kind on earth." Over the door of the other one was a placard on which was printed "Only 25c to see the great Nubian terpsichorean evolutions." Two or three men would come up, stand awhile and listen at the curious sounds from within, resembling very much the noise made by a pack of curs after a rabbit they did not hope to catch; or, perhaps, more like a plantation jamboree when all the strings of the banjo were broken but one and it had been mended twice.