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.
Now, the African's hair has been under the influence for many centuries, of the intense heat of his native clime, and in each generation is still more curly, till we find as many grades of hair as we do of color, from the straight silken strands of the Malay, to the wool of the Guinea Negro. Custom, air, food, and the general habits of the people, spread over the great area of the African continent, aid much in producing the varieties of hair so often met with in the descendants of the country of the Nile.
In the recent reports of Dr. Livingstone, he describes the physical appearance of a tribe which he met,
