The intermediate stages of such diseases and the process of the symptoms are often modified in their outward manifestations to such an extent as to lead even the keen observer astray. But it is only he who can unerringly diagnosticate the _nature_ of the disease who can ever become a great healer: he discovers the true character and source of the malady, whatever may be its external complications, and from whatever conditions and influences they may result. Some symptoms may increase, others decrease in intensity and virulence in the physiological as in the social disease--they are, however, secondary. The parallel holds good--the principle remaining unchanged: life becomes extinct for similar reasons in the animal as in the social and political body. Thus, in the history of the Phoenicians, and therefore, in the earliest authentic epoch, a great historical and social law manifests itself in full action. This activity it retains through all the subsequent social and political catastrophes in the life of nations and empires, down even to Hayti with her immortal Toussaint. _Slavery generates bloody struggles._ Many of these have resulted in the slaves violently regaining their liberty, while others have destroyed the whole state--swallowing up the slaveholders in their own blood, or burying them under the ruins of their own social edifice. III. LIBYANS. AUTHORITIES: _Diodorus Siculus, Corippus, Moevers, etc._ The primitive social and intellectual condition of the populations dwelling along the shores of Africa washed by the Mediterranean sea, can only be inferred from their respective relations with the Phoenicians and Carthaginians. Other sources of historical information as to that remote period there are none, while later times also give comparatively scanty satisfaction. Ethnology has not yet positively determined who the aborigines of Libya were, and it is questionable if it can ever be satisfactorily settled. Egyptian inscriptions indicate a white race in the north-eastern corner of Libya, adjoining Egypt; while further to the west lived the blacks. At a period exceedingly remote, the whites mixed with these negro blacks, who probably immigrated from the centre of Africa--Soudan--and spread over the whole of Libya. These remote epochs, however, altogether refuse chronological limitation. But when chronology, even of the most rudimentary kind, becomes possible, history shows us the existence, in Libya, of a nomadic and agricultural people, who can be no other than these cross-breeds, and who had brought a part of the land to a high degree of cultivation. The Libyans may thus be considered as an autochthonous African population--a theory which is confirmed by other evidence not now necessary to give.