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432 enemy, because most of them are inland. They could not be made to serve for the protection of the rich during insurrections or civil wars, nor to enable robbers to plunder in security the peaceful inhabitants of the plain. In short, unless the ancient Sardinians lived in a state of society of which we have no knowledge elsewhere, these Nurhags were certainly not military works.

When we turn to the second hypothesis and try to consider them as temples, we are met by very much the same difficulties as beset the fortification theory. If temples, they are unlike the temples of any other people. Generally it is assumed that they were fire temples, from their name Nur—in the Semitic languages signifying fire—but more from their construction. The little circular chambers in their interiors are admirably suited for preserving the sacred fire, and the external platforms as well adapted for that Sabean worship of the planets which is generally understood to be associated with fire-worship. But assuming this to be the case, why so numerous? We can count on our fingers all the fire-temples that exist, or were ever known to exist, in fire-worshipping Persia; and if a dozen satisfied her spiritual wants, what necessity was there for three thousand, or probably twice that number, in the small and sparsely inhabited island of Sardinia? Had every family, or little village community its own separate temple on the nearest high place? and did each perform its own worship separately from the rest? So far as we know, there is no subordination among them, nothing corresponding to cathedrals, or parish churches or chapels. Some are smaller, or some form more extensive groups than others, but a singularly republican equality reigns throughout, very unlike the hierarchical feeling we find in most religions. In one other respect, too, they are unlike the temples of other nations. None of them are situated in towns or villages, or near the centres of population in the island.

Must we then adopt the third hypothesis, that they were tombs? Here again the same difficulties meet us. If they were tombs, they are unlike those of any other people with whom we are acquainted. Their numbers in this instance is, however, no difficulty. It is in the nature of the case that sepulchres should accumulate, and their number is consequently one of the strongest arguments in favour of this destination. Nor does their situation militate