INTRODUCTION. 



The following- study is based on data collected by Dr. D. E. 

 Ford, surgeon of the Peruvian Expedition of 191 5. which was 

 under the auspices of the National Geographic Society and Yale 

 University and under the direction of Prof. Hiram Bingham. 



While the matter collected is in general along lines similar to 

 those followed by the Expedition of 1912 and reported by the 

 writer in 1 916 as a Memoir of the American Anthropological 

 Association under the title of the Indians of Cuzco and the 

 Apurimac, the number of measurements of each individual is 

 less and many more females are included. Forty-one different 

 measurements were made by the Expedition of 1912 and 18 by 

 this last expedition. Some measurements of importance were 

 added, however. The ones omitted were principally those of the 

 extremities and trunk as also several of the head and face. These 

 omissions are to be regretted as some interesting facts relating 

 to the proportions of the segments of the extremities were ascer- 

 tained by the Expedition of 191 2 and it was desirable to check 

 these results by further observations. 



It was the intention to measure only the pure Quichua but 

 undoubtedly some mixed whites were included, probably, how- 

 ever, not to exceed S'y{ and therefore not separately considered 

 in our tabulations. The criteria of purity are the skin and iris 

 color, the lack or sparseness of beard, the straightness of hair 

 and general physiognomy. The data were recorded according to 

 a chart devised by Dr. Ales Hrdlicka. 



The localities in which measurements were made so far as the 

 Quichua are concerned were in a more restricted region than was 

 the case in the former expedition and were confined to the 

 provinces of Urubamba and Convencion of the Department of 

 Cuzco between the parallels of latitude 13° and 13^° S. and 

 betw^een /2° and '/^° W. longitude. Two quite dift'erent racial 

 groups Avere studied, the Quichua of the Peruvian Highlands and 

 the Machiganga Indians living in the region of the head waters 

 of the Amazon, largely in the San Miguel Valley about 12^° 

 South latitude and y^° West longitude. The accompanying map 



