predominant one in many parts of the west both of Britain and Ireland, and is believed by some ethnologists to be generally upon the increase all over England. The second of the two races was the exact opposite to the first. It was the tall, fair, light-haired, blue- or gray-eyed, broad-headed people called, popularly, the “Celts”, who belonged in speech to the “Aryan” family, their language finding its affinities in Latin, Greek, Teutonic, Slavic, the Zend of Ancient Persia, and the Sanscrit of Ancient India. Its original home was probably somewhere in Central Europe, along the course of the upper Danube, or in the region of the Alps. The “round barrows” in which it buried its dead, or deposited their burnt ashes, differ in shape from the “long barrows” of the earlier race. It was in a higher stage of culture than the “Iberians”, and introduced into Britain bronze and silver, and, perhaps, some of the more lately domesticated animals. Both Iberians and Celts were divided into numerous tribes, but there is nothing to show that there was any great diversity among the former. It is otherwise with the Celts, who were separated into two main branches which came over at different times. The earliest were the Goidels, or Gaels; the second, the Brythons, or Britons. Between these two branches there was not only a dialectical, but probably, also, a considerable physical difference. Some anthropologists even postulate a different shape of skull. Without necessarily admitting this, there is reason to suppose a difference of build and of colour of hair. With regard to this, we have the evidence of Latin writers—of Tacitus,[12] who tells us that the “Caledonians” of the North differed from the Southern Britons in being larger-limbed and redder-haired, and of Strabo,[13] who described the tribes in the interior of Britain as taller than the Gaulish colonists on the coast, with hair less yellow and limbs more loosely knit. Equally do the classic authorities agree in recognizing the “Silures” of South Wales as an entirely different race from any other in Britain. The dark complexions and curly hair of these Iberians seemed to Tacitus to prove them immigrants from Spain.[14]