The camel-herding peoples described in our last article differ considerably from the cattle-breeding tribes now to be discussed. Not only do the pastoralists mentioned in Section V accord to the camel the leading position as their standard of value, the ass, sheep, and goat being only of secondary importance, but they are also different in race. Like all herdsmen they have a strong pride of ancestry, which has led to internal gradations of rank, crossed by considerations of wealth. The North African Berber tribes are, however, Mohammedans, and therefore the whole structure of their civilization is different from that of the mainly ‘heathen’ cattle-breeders to be considered below. Their great natural gifts and their connexion with Islam set them apart from most of the remaining inhabitants of Africa ; on the other hand conditions of existence in desert and steppe, combined with specialization in pastoral life, have prevented their uniting to form large states or similar organizations.