264 



FIG. 1 —OUTLINES OF THECRANIALARCH OF: (a) ORDINARY IRISH SKULL: (4) SKULL OF A MICROCEPHALIC 

 IDIOT; {(■) THE FOSSIL CRANIUM DESCRIBED BY DUBOIS- (d) SKULL CF A GORILLA. THE BASE LINE 

 IS ONE WHICH PASSES THROUGH THE EXTERNAL OCCIPITAL PROTUBERANCE BEHIND, AND THE 

 CENTRE OF THE GLABELLA IN FRONT. 



FIG. 2— OUTLINES OF THE ANTERO-POSTERIOR CRANIALARCH OF: (o) ORDINARY IRISH SKULL: (6) SPY 

 CRANIUM NO. 2: (f) NEANDERTHAL CRANIUM ; (lOTHE FOSSIL CRANIUM DESCRIBED BY DUBOIS ; (f) 

 THE SKULL OF A GORILLA. BASE LINE THE SAME AS IN FIG.1. 



Bii pirmhsio'ii of Messrs. Macmdhvix. 



