Along the narrow bank of shingle at the foot of the cliffs flocks of dark-coated sheep and goats wander in search of such scant herbage as may be found along the water's edge, and many native boats lie along the banks loading the stone extracted by the quarrymen, who look like flies on the face of the rock high above you. Enormous quantities of stone are required for the building of the various dams and locks on the river, as well as for the making of embankments and "spurs." These "spurs" are little embankments which project into the river at a slight angle pointing down-stream, and are made in order to turn the direction of the current towards the middle of the river, and so protect the banks from the scour of the water; for each year a portion of the banks is lost, and in many places large numbers of palm-trees and dwellings are swept away, for the native seems incapable of learning how unwise it is to build at the water's edge. Sometimes whole fields are washed away by the flood, and the soil, carried down-stream, forms a new island, or is perhaps deposited on the opposite side of the river many miles below. When this occurs, the new land so formed is held to be the property of the farmer or landowner who has suffered loss. These changes of the river-banks are often rapid. One year vessels may discharge their passengers or cargoes upon the bank whereon some town or village is built, and which the following year may be separated from the river by fields many acres in extent; and each year in going up the Nile one may notice striking changes in this way. As the Nile winds in its course the rocky hills on either side alternately approach close to the river, revealing a succession of rock-hewn tombs or ancient monasteries, or recede far into the distance, half hidden in the vegetation of the arable land; but, speaking generally, the river flows principally on the eastern side of the valley, while all the large towns, such as Wasta, Minyeh, Assiut, or Girgeh are built upon the western bank, where the largest area of fertility is situated. As we ascend the river the vegetation slowly changes; cotton and wheat, so freely grown in the Delta, give place to sugar-cane and Indian corn, and the feathery foliage of the sunt and mimosa trees is more in evidence than the more richly clad lebbek or sycamore. In many places are fields of the large-leaved castor-oil plants, whose crimson flower contrasts with the delicately tinted blossoms of the poppies which, for the sake of their opium, are grown upon the shelving banks. The dôm palm also is a new growth, and denotes our approach to tropical regions, while the type and costume of the people have undergone a change, for they are darker and broader in feature than the people of Lower Egypt, and the prevailing colour of their clothing is a dark brown, the natural colour of their sheep, from whose wool their heavy homespun cloth is made.