Abstract
The "skin" type of umbilicus is present in 97% of the Nigerian infants examined, and while it tends to self-heal to some degree as they grow older, an avg. of 25% of the adults show umbilical hernias. Such hernias seem to be of but little handicap at any age period. Umbilical hernias due to "skin" type umbilical cords are quite uncommon among all non-African peoples. The condition[long dash]present wherever Negro peoples exist[long dash]seems to be a racial characteristic. No nutritional or other infantile disease can be associated with this condition. A "skin" umbilicus and a wide umbilical ring seem to be inherited physiological characteristics of all Negro peoples.

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