HRDUCKA] APPENDIX 101 



although the number of brachycephalic skulls examined was quite 

 large. The writer is acquainted with only a single brachycephaiic 

 skull that shows a low sloping forehead. This is the Indian cranium 

 pictured in plate xni, &, of the preceding paper. 



The antiquity of the specimens here described in no case is great, 

 and several of the skulls are quite modern. 



The cranial capacity was measured by the writer s method, ex 

 plained in Science, 1903 (page 1011 et seq.). 



The illustrated skulls are placed in the alveolo-condylian plane. 



A. - SKULL FROM MOUND TX NORTH DAKOTA ( NO. J 



( Plate xiv) 



A symmetrical and not diseased cranium of a man of about 55 years of age. 

 The sagittal and coronal sutures show advanced, the lambdoid slight, occlusion, 

 which appears in no way premature. 



The specimen is rather heavy. Its low forehead is very striking. The supra- 

 orbital ridges and glabella are very pronounced. The ridges are restricted to 

 the modfnn three-fifths of the supraorbital space; the remaining portion of the 

 border above each orbit projects also forward, but is not massive, and is distinct 

 from the ridge proper. 



The slope of the forehead is uniform and the moderate convexity of the frontal 

 bone presents no trace of the frontal eminences. From near the glabella to the 

 vertex of the skull runs a median elevation, which is especially well marked 

 back of the bregma and gives the transverse plane of the skull in this region 

 the outline of a pointed arch. The temporal ridges are well marked and reach 

 on the right to within 2.2 cm., on the left to within 1.0 cm., of sagittal suture. 



The face shows moderate prognathism, well-marked nasal gutters, and strong 

 malars as well as zygoimp. The skull as a whole bears evidence of a strong 

 musculature. 



The teeth are of ordinary size and present no abnormality. 



The base shows an anomalous fenestrum, formed by a process of bone passing 

 from near the base of the external pterygoid plate to the sphenoid just outside 

 of the foramen ovalo. 



Cuts in the rear of the foramen magnum and on tln&amp;gt; face indicate in all proba 

 bility cleaning before a secondary burial. 



Diameter antero-posterior maximum __centimeters__ 10. &amp;lt;; 



Diameter antero-posterior from ophryon__ do 19. 



Diameter lateral maximum_l do 13. 7 



Cephalic index _ 09.9 



Basion-bregma height --centimeters 13.3 



Cranial module (mean diameter) 15.53 



Circumference above the ridges centimeters 52.0 



Capacity. cubic centimeters 1, 475 



Thickness of left parietal above the squamous suture millimeters-- 5-0 



Diameter frontal minimum centimeters.. 9.1 



Diameter frontal maximum (along coronal)-- do 11.4 



Basion-nasion length , .__do 10. 



Facial height-- . (?) 



Facial breadth (diameter bizygomatic max.)___ centimeters-- 13.8 



