254 



MEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 



TABLE XXXIX. Lint of indices and angles of alveolo-subnasalprognatliism. 



TABLE XL. Ordination of 27 indices of alveolo-subnasal prognathism. 



Variation, 47.25. Theoretical mean of variation, 37.90. Skull nearest to mean, H. 11. Aver- 

 age, 37.27. 



TABLE XLI. Ordination of 27 angles of alveolo-siibnasal prognathism. H<tl<i<lo. 



Variation, 22J. Theoretical mean of variation, 70f. 

 mean and average, H. 20 



Average, 70+. Skull nearest to 



