220 CRANIA AMERICANA. 



preserving the bones from decay.— The ancient works at Circleville are extensive, 

 and when first discovered were in a fine state of preservation. Trees, the growth 

 of many centuries, covered the ground, bearing evidence of the antiquity of these 

 remains of a former race. Large quantities of human bones, in different stages of 

 decomposition, are found in the gravelly plain about half a mile north of Circleville, 

 showing that this had long been the burial place of a numerous people."* 



MEASUREMENTS. 



Longitudinal diameter, 

 Parietal diameter, . 

 Frontal diameter, . 

 Vertical diameter, . 

 Inter-mastoid arch, . 

 Inter-mastoid line, . 

 Occipito-frontal arch. 

 Horizontal periphery. 

 Internal capacity, . 

 Facial angle, . 



PLATE LII 



7.3 



inches. 



5.8 



inches. 



4«4 



inches. 



5.4 



inches. 



14.6 



inches. 



4.2 



inches. 



14.1 



inches. 



20.3 



inches. 



86.5 cubic inches 



76 degrees. 



SKULL FROM A MOUND ON THE UPPER MISSISSIPPI- 



I am also indebted to Dr. Hildreth for this specimen, together with the 

 following memorandum. " Skull taken from a mound seated on the high bluff 



* The admirable preservation of this skull, is owing to its having been washed with spirit-varnish 

 immediately after exhumation, a process by which these relics may be readily and permanently 

 preserved. 



