CHARACTERISTICS PERTAINING TO ANCIENT MAN. 



241 



And here twish to remark that but two rejoinders were elicited by 

 my notice ou '' The Artiticial Perforation of the Cranium"' in the Ameri- 

 can Naturalist. One of these was iroui Dr. Ford, who subsequently 

 kindly forwarded for inspection a perforated skull, (Fly. 9,) the only one 



Fig. 8. 





-./-J' 





Pcrfovatiou, Rongo Rivur fskiill. (No. 0,) full size. F, frontal. 



in the medical museum at Ann Arbor. The specimen was taken from a 

 mound at Devil Elver, Michigan, by Rev.Dr.Pilcher. This peculiar keeled 

 cranium, of which only the upper portions of the frontal and parietals 

 remain, presents, I find, the extraordinarily low cephalic index of 0.557. 

 In obtaining this, I have allowed only 0.25 of an inch for the additional 



Fig. 0. 



Perforated skull from mouiul at Devil River, Michigan, (Lake Ilurou,) one-fourth size. 



length which the occipital (that bone being totally wanting) would have 

 given. This jirobably gives the quantity rather under than over the 

 true length. The breadth is barely 4.07 inches. The perforation, shown 

 at full size in Fig. 10, is elliptical in form, (the diameters O'.S x 0'.7 ;) 

 the major diameter running right and left, or latitudinally, as if to 

 heighten the narrow aspect of the skull. 

 S. Mis. 115 IG 



