164 



ADOLF H. SCHULTZ 



indicates that the female arm is looser, that is the perpendicular 

 diameter of the axilla in the female is relatively shorter since the 

 caudal edge of the pectoralis major at its lateral end represents the 

 lower border of the axilla. The average of both sexes in the 

 whites hardly differs from that found in the negroes; the two 

 races are alike therefore in regard to the position of the insertion 

 of the pectoralis major. The variation coefficient of the index 

 is always rather high and even exceeds 10 in one case. The con- 

 clusion can be drawn from this that the position of the attach- 

 ment of the pectoralis major can be only slightly influenced by 

 the length of the humerus, since the index connecting these two 



TABLE 4 

 Absolute and relative numbers of individuals ivith symmetrical and asymmetrical 



is quite variable. In order to throw some light on the question 

 concerning the relationship of the point of attachment and the 

 strength of the muscle, the individuals of each group were di- 

 vided into four subgroups, namely into weak, medium, strong 

 and very strong ones. Positive and negative variants of the 

 index of position were found to be indiscriminately distributed 

 among the four subgroups, in whites as well as in negroes 

 and in males as well as in females. The strength of the muscle 

 has therefore no influence on the position of the attachment. 

 Table 4 shows a grouping of the absolute and relative number 

 of individuals with symmetrical and asymmetrical position of 

 muscle attachment, and the averages of the individual differ- 

 ences in the index of position. The position of attachment of 



