20 



name in science, and tibia possessing this lateral flattening are known as Platy- 

 onemic tibia. 



It lias frequently been met with in ancient mounds and Cave explorations 

 in Europe, and Prof. Wyman has observed platyenemic tibia in ancient 

 mounds in Kentucky, Tennesee, California, Florida, Labrador and other places. 

 Mr. Henry Gillman discovered, in mounds in Michigan, tibia that possessed a 

 remarkable lateral flattening. 



According to Prof. Wyman's observations, the flattening of the tibia is not 

 a race character, but seems to be of common occurrence in all prehistoric races. 



Our labors at Omori were fortunately rewarded by the discovery of a portion 

 of the shaft of a tibia, associated with other human bones. 



From the variation this bone presents in man, the single example here men- 

 tioned can have but little significance. It may be of interest, however, to give 

 its proportionate measurements in contrast with corresponding measuremeits 

 given by "Wyman in his Florida mounds memoir. 



Fig. 



Transverse sections of Platyenemic Tibia-. 

 Fig 1. Omori, MusasLi. Fig-, 2. Ononuira. Higo. 



The antero-posterior diameter being taken as 100, the transverse diameter in 



Twelve, white race (recent), was 0.70 ; 



Twelve, from the Florida Mounds, 0.G4 ; 



Seven, from the Kentuckj^ Mounds, 0.63 ; 



One, from the Omori Mound, 0.62. 



There were others from the Florida mounds as low as 0.-39, and Mr. Gillman 

 discovered one in a mouud on Rouge River, Michigan, with the excessive lateral 

 flattening of 0.48. This latter tibia far exceeds the famous Cro Magnon tibia 

 of Broca, which gave an index of 0.60. T le Omori specimen, with its index 

 of 0.62, may be looked upon as a fair platyenemic tibia. It has a remarkable 

 lateral flattening in contrast with nine recent Japanese tibia, which were mea- 

 sured at random and which gave an index of 0.74 ; — the lowest index in the lot 

 being 08.4. 



