448 CRANIA FROM THE MOUNDS OF FLORIDA. 



and included examples extending from leptorhinian to extreme platyrhinian. In 

 the crania from Cibola, in the same general locality with the foregoing, Matthews x 

 found the index to be practically the same. 



The nasal index gives no indication of the shapes or sizes of the nasal bones, 

 nor of the height of the nasal aperture. It is difficult to formulate impressions on 

 these subjects since the nasal bones are so often found mutilated in museum crania. 

 Still it must be acknowledged that the value of the nasal index is impaired on 

 account of the fact that the types of the external nose recognized in anatomy are 

 not therein expressed. 



All measurements in tables and elsewhere are recorded in millimeters. 



Erratum. Fig. 7, p. 413 is out of the horizontal plane and gives an erroneous 

 impression of the height of the brain-case. 



1 Seventh Mem. Nat. Acad, of Science, Vol. VI, 1893, 233. 



