ANTHROPOMETRY 



137 



Calcaneus' 



Tribe Locality . 



Right 



Observer. 



Left 



Cat. 

 No. 



Age 



Bread tn- 



Length 



Index 



i.B X 100) 



Breadth- 

 Height 

 Index 

 (g X 100) 

 H 



Height- 

 Length 

 Index 

 (£r X 100) 



Module 

 (i + 5 + fi') 



Articular 

 Facets for 

 Astragalus 



Notes: All measurements to be taken with the small sliding compass. 

 The taking of the maximum length will be self-evident. To secure 

 the breadth, the branches of the compass should be applied to the 

 sides of the bone in the region of the minimum thickness of its body. 

 The most practicable height of the calcaneus is obtained by moving 

 the bone from side to side between the branches of the compass, which 

 are applied to what is seen to be the greatest constriction of the body 

 (approximately its middle). 



As to visual observations on the Os calcis, the greatest interest 

 attaches probably to the number and conformation of the articular 

 facets for the astragalus. These facets may be two in number, an- 

 terior and posterior. But the anterior facet may be divided into two 

 by a ridge; or it may be replaced by two facets, anterior and median, 

 completely separated by a narrow to moderately broad groove or 

 space; or, finally, in place of the single oblong anterior facet there 

 may be a small to rudimentary anterior and a medium-sized median 

 facet, separated by a broad and deep notch. 



An additional point of some interest is the development of the 

 peroneal spine. 



» See Bull, es, But. Amer. Ethnol, Wash., 1916. 



