In concluding this portion of our subject, we will merely refer to the fact that neither the Celts of Gaul or Britain, nor those of Ireland, ever opposed an organized fleet to the numerous hostile naval armaments by which their country was invaded. When the Roman fleet, commanded by Caesar, landed in Great Britain, when the innumerable Danish expeditions attacked Ireland, whenever the Anglo-Normans arrived in the island during the four hundred years of the colony of the Pale, we never hear of a Celtic fleet opposed to the invaders. Italian, Spanish, and French fleets came in oftentimes to the help of the Irish; yet never do we read that the island had a single vessel to join the friendly expedition. We may safely conclude, then, that the race has never felt any inclination for sending large expeditions to sea, whether for extensive trading, or for political and warlike purposes. They have always used the vessels of other nations, and it is no surprise, therefore, to find them now crowding English ships in their migrations to colonize other countries. It is one of the propensities of the race. A third feature of Celtic character and mind now attracts our attention, namely, a peculiar literature, art, music, and poetry, wherein their very soul is portrayed, and which belongs exclusively to them. Some very interesting considerations will naturally flow from this short investigation. It is the study of the constitution of the Celtic mind. In Celtic countries literature was the perfect expression of the social state of the people. Literature must naturally be so everywhere, but it was most emphatically so among the Celts. With them it became a state institution, totally unknown to other nations. Literature and art sprang naturally from the clan system, and consequently adopted a form not to be found elsewhere. Being, moreover, of an entirely traditional cast, those pursuits imparted to their minds a steady, conservative, traditional spirit, which has resulted in the happiest consequences for the race, preserving it from theoretical vagaries, and holding it aloof, even in our days, from the aberrations which all men now deplore in other European nations, and whose effects we behold in the anarchy of thought. This last consideration adds to this portion of our subject a peculiar and absorbing interest.