W. R. Macdonell 
229 
senting the distribution of L ^, the other that of £ $ (Diagrams I. and II.). As 
usual, the y unit is one individual per unit of x, and the unit is 1 mm. The 
scale of absolute frequency indicated on the vertical to the left of the diagram 
gives %j. 
DiAGKAlI I. 
a 
181 183 185 187 189 191 193 195 197 
Length of Head in Male Crania. 
201 203 206 207 
123 125 '127 129 131 133 135 137 1 
Breadth of Head in Female Crania. 
143 145 147 
