16 





\V. L. H Duckworth. 



>*/ E^mo Skulls, by j. Bri- 

 . r: Amur. tnst.. 1906. 

 EXPLANATION OF PLATE I. 



. by Prof. A. 1 

 Section through the left Glenoid Fossa of a European. 



C = Condyle of lower jaw. 



E = Eminentia articularis. 



F = Glaserian fissure. 



G = Anterior concave portion of glenoid fossa. 



P = Petrous portion of temporal bone. 



S = Squamous portion of temporal bone. 



The above section was cut in the sagittal plane a little to the left of the 

 deepest part of the Glaserian fissure. It will explain the diagrams drawn 

 from the sections of the casts of various Glenoid Fossae shown in figure 2, 

 as it illustrates the relations of the parts of the skull at that point. The 

 lines EGF in Plate II correspond in position in the skull to the line EGF 

 in Plate I. In these diagrams the fossa has been drawn in its natural position, 

 i.e. with the skull placed upright. In order to recognize the term 'concave' 

 as applied to this fossa in its anatomical description, and the 'height' of the 

 eminentia articularis, it is only necessary to turn the diagrams upside down. 



f 111 and IV and for ma 

 - f km* illustrating Plates 1 

 - --/ ftnd kindness of Dr. Arthur 

 V.-uomy of Oxford Univ 



* r ;. >.!<,. -;'. . .. ^ f /, r cranial collection of the 



