It is noteworthy that while modern books commonly speak of the surnames as assumed, the explanations given by our ancient authorities almost invariably suppose them to be given as marks of homage or gratitude (English Historical Review, xvi.
As it was composed in rather less than six months, and as the author honestly warns us that he has given all his attention to a more profound co-ordination, instead of working out the special explanations more fully, as he had promised, we need not be surprised if the result is disappointing to those who had mastered the corresponding portion of the Positive Philosophy.
The trouble is that very few of their laborious explanations stick in the memory.
Both add notes and explanations of their own, and both have in turn formed the text of commentaries.
Herodotus, who ranks Libya as one of the chief divisions of the world, separating it from Asia, repudiates as fables the ordinary explanations assigned to the names Europe and Asia, but confesses his inability to say whence they came.