[ CHAPTER XVI.—HISTORY IN STONE. ]
[ CHAPTER XVIII.—ASCENDING THE RIVER. ]
[ CHAPTER XIX.—PASSING THE CATARACT OF THE NILE. ]
[ CHAPTER XX.—ON THE BORDERS OF THE DESERT. ]
[ CHAPTER XXII.—LIFE IN THE TROPICS. WADY HALFA. ]
[ CHAPTER XXIII.—APPROACHING THE SECOND CATARACT. ]