An illustration of the influence of circumstances upon the physical appearance of man may be found still nearer our own time. In the Irish rebellion in 1641, and 1689, great multitudes of the native Irish were driven from Armagh and the South down into the mountainous tract extending from the Barony of Flews eastward to the sea; on the other side of the kingdom the same race were expelled into Litrin, Sligo, and Mayo. Here they have been almost ever since, exposed to the worst effects of hunger and ignorance, the two great brutalizers of the human race. The descendants of these exiles are now distinguished physically, from their kindred in Meath, and other districts, where they are not in a state of personal debasement. These people are remarkable for open, projecting mouths, prominent teeth, and exposed gums; their advancing cheek-bones and depressed noses carry barbarism on their very front. In Sligo and northern Mayo, the consequences of two centuries of degradation and hardship exhibit themselves in the whole physical condition of the people, affecting not only the features, but the frame, and giving such an example of human degradation as to make it revolting. They are only five feet two inches, upon an average, bow-legged, bandy-shanked, abortively-featured; the apparitions of Irish ugliness and Irish want.[27] Slavery is, after all, the great demoralizer of the human race. In addition to the marks of barbarism left upon the features of the African, he has the indelible imprint of the task-master. Want of food, clothing, medical attention when sick, over-work, under the control of drunken and heartless drivers, the hand-cuffs and Negro whip, together with the other paraphernalia of the slave-code, has done much to distinguish the blacks from the rest of the human family. It must also be remembered that in Africa, the people, whether living in houses or in the open air, are oppressed with a hot climate, which causes them to sleep, more or less, with their mouths open. This fact alone is enough to account for the large, wide mouth and flat nose; common sense teaching us that with the open mouth, the features must fall. As to the hair, which has also puzzled some scientific men, it is easily accounted for. It is well-known that heat is the great crisper of the hair, whether it be on men’s heads or on the backs of animals. I remember well, when a boy, to have witnessed with considerable interest the preparations made on great occasions by the women, with regard to their hair. The curls which had been carefully laid away for months, were taken out of the drawer, combed, oiled, rolled over the prepared paper, and put in the gently-heated stove, there to remain until the wonted curl should be gained. When removed from the stove, taken off the paper rolls, and shaken out, the hair was fit to adorn the head of any lady in the land.