Galicia certainly rivals the British Isles in her megalithic remains; she can also boast of “rocking” boulders[14] such as those that were formerly used as tests of female virtue in Brittany. That Celts inhabited Galicia at a very early period in the history of the human race is certain, but they were not her earliest inhabitants. Barros Sivelo was convinced, after years of study, that the earliest inhabitants of Galicia were neither Celts nor Iberians. To discover who were the forerunners of these two races will be the business of archæology, and in archæology the words “prehistoric” and “historic” cease to have any value, for every object that comes down to us from the earliest times is itself a historical document, which, if properly interpreted, will help to throw light upon the past. Jubainville,[15] who has devoted years of patient study to the ancient history of the Celtic race, tells us in his latest work that the Britons reached Great Britain from the continent in the eleventh century B.C., and that their language is represented to-day by two of their living daughters, the Welsh-speaking people in Britain and the Breton-speaking people of Brittany in France. He also believes that the Celts penetrated into Spain from France before Druidism had reached Gaul from its birthplace, Britain. When the Celts and the Iberians had, in certain parts of Spain, amalgamated into one race, they began to be called Celtiberians; but in the corner of Spain with which we have now to do a small group of Celtic tribes kept themselves quite distinct from the Iberians. The Celts of Galicia were still Celts pure and simple when the Romans, under Decimus Brutus, conquered that province in B.C. 136, and it is from them that the present inhabitants of Galicia have inherited their Celtic place-names, their Celtic bagpipe, their Celtic dances, their Celtic temperament, and many other things Celtic which they share with their neighbours of Scotland, Ireland, and Brittany to-day. Celtic Spain is thought to have embraced part of Lusitania (now the north of Portugal), the whole of the territory now called Galicia, Asturias, and all the other northern kingdoms of the Peninsula. Paul Orosius, a local writer of the fourth century, is one of our authorities here, but Manuel de la Huerta y Vega was somewhat doubtful on this point.