Further Studies on The Relationship Between Hair Diameter and Incidence of Medulla

The incidence of medulla was determined in 1000 scalp hair strands, from 100 individuals belonging to the Bengalee population in West Bengal. Both the scoring method and the medullary ratio method were used. The relation of the incidence of medulla obtained by the medullary ratio method, and mean hair diameter show a high positive correlation between the two. A regression of incidence of medulla on hair diameter show a positive regression coefficient The utility of the medullary ratio method over the scoring method for the determination of medulla is discussed.