We found here a few plants not hitherto seen, but were especially pleased with an undescribed _Statice_ (_S. ornata_, Ball), not found elsewhere on our journey, whose numerous bright amethyst blue flowers were scattered on long, slender, much-branched panicles. On the east side of the river we fairly entered on the portion of the great plain immediately surrounding the city of Marocco, extending some thirty miles from west to east, and southward to the base of the Great Atlas. This is inclined upwards from west to east, and still more decidedly from north to south; but to the eye it appears a dead level, and the hills represented on Beaudouin’s map as approaching near to the city on the south and east have no existence in fact. The north-western border of the plain is, on the other hand, marked by prominent rough hills of a ruddy hue, as seen from a distance, which rose on our left as we advanced towards the city. Some portion of these hills, seeming to form an interrupted range, extending along the north side of the Oued Tensift and parallel to its course, was traversed by Washington on his route from Azemor to Marocco in December, 1829. He estimates their height above the plain at from 500 to 1,200 feet, and describes the rock as schistose, with veins of quartz, the line of strike from north by east to south by west, and the dip 75°. To us it appeared that the higher summits, which perhaps do not lie near Washington’s track, must rise fully 2,000 feet above the plain. On the southern side of the Oued Tensift, and nearer to the city, are some lower hills, very similar in appearance to the others, and probably of similar geological structure. One of these, visited by Maw, is described as formed of very hard, dark, grey rock, with knotted white concretions elongated in the line of stratification, the strike from north-west to south-east, and the dip south-west, varying from 50° to 80°.