MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



245 



Variation, 13.59. Theoretical mean of variation, 85.76. Skull nearest to mean, 1 1. IS). Average, 

 83.87. 



II. 28, a child s skull, with index of 77.70, and H. , 52, aberrant in size and form (see 11), with 

 index of 1)7.2!), are excluded from the above ordination. 



TABLE IX. Seriation of 39 vertico-longitudinal indices. Saludo. 



Maximum of frequency, 83; 97 to 98, one skull, not included in the ordination. 

 TABLE X. Ordination of 11 vertico-longitudinal indices of apparently normal skulls. Salado. 



TABLE XI. Heriation of 11 vertico-longitudinal indices of apparently normal skulls. Salado. 



TABLE XII. Ordination of all the skulls in which the vertico-longitudinal index exceed* the cephalic, 

 showing excess inper cent of greatest length. Salado. 



Variation, 4.90. Theoretical mean of variation, 2.95. Skulls nearest to mean, II. 9, and H. 13. 

 Skulls II. 18 and H. 23 are from the apparently normal group. 



TABLE XIII. Seriation of all the skull? in which the vertico-longitudinal index exceeds the cephalic, 

 showing excess in per cent of greatest length. Salado. 



