Along the upper courses of the rivers are willows and wild olive trees; round the chief settlements the eucalyptus and the pine have been planted.
There are remains of ancient forests consisting of wild olive trees and the camel thorn, near which grows the ngotuane, a plant with a profusion of fine, strongly scented yellow flowers.
In the year 1866 he published a little book about girls, and written for girls, a mixture of morals, theology, economics and geology, under the title of Ethics of the Dust; and this was followed by a more important and popular work, The Crown of Wild Olive.
Thus the upper parts of the Zhob valley are comparatively open and fertile, with flourishing villages, and a cultivation which has been greatly developed under British rule, and are bounded by long, sweeping, gentle spurs clothed with wild olive woods containing trees of immense size.
The government, to check the decrease of olive culture in Sassari, has offered prizes for the grafting of wild olive trees, of which vast numbers grow throughout the island.
