Kathleen V. Ryley 
and Julia 
Bell 
417 
they make the female slightly more variable on the average than the male. For 
the standard deviations the male is more variable in G out of 10 cases ; for the 
coefficients of variation the female is more variable in 6 out of 10 cases. In either 
method of measurement the apes are more variable than men, with the one 
exception of the Chimpanzees in the case of the standard deviations, where the 
small variation is associated with small variation in the Negro group. 
(8) Racial Relationship as based on Nasal Bridge Measurements. 
Having general regard to Tables XV — XIX for variability, and comparing 
the orders therein with those for the racial order of absolute lengths, it seems 
impossible to suggest any linear scale of arrangement which will mark racial 
relationship ; it is impossible to assert that the Negroes or the East Asiatic group 
stand regularly higher or lower in a linear scale. Still there does appear to be 
some order in the scales both for absolute mesodacryal values and for variabilities. 
Thus the Veddah nasal bridge is more closely related to that of the Orang than 
the latter's to the Negro group, which on the whole is closer to that of the 
African apes. Our numbers are too small, our probable errors too large, for 
insistance on any individual point, but the measurements lead to constants both 
for index and variability suggesting a scheme of the following type : 
Tree. Mesodacryal Subtense Index and Average Variability for s 's indicated. 
