THE BENGUET IGOROTS. 



431 



between the three groups of men is not so marked, but the lowland 

 group resembles the women more than any other. The tall men have 

 a low and the short men have a high index. 



Childbearing in women may have some influence on the position of 

 the umbilicus. So may the protrusion of the abdomen from any cause, 

 such as obesity, ascites, rice feeding, etc. 



The relation of omphalic index to age is as follows : 



Omphalic index and age. 



Group-age. 



Num- 

 ber, 



Pubis. 



Umbili- 

 cus. 



sternum 



Sternum 

 to umbi- 

 licus. 



Pubis to 

 umbili- 

 cus. 



Ompha- 

 lic index. 



Below 10 



10-11 



5 

 7 

 6 

 13 

 9 



54.3 

 61.1 

 68.2 

 70.5 

 76.8 



64.3 

 71,3 

 79.5 

 83.0 

 90.8 



86.7 

 98.2 

 107.6 

 114,0 

 124.2 



22.4 

 26.9 

 28.1 

 31,0 

 33.4 



10.0 

 10.2 

 11.3 

 12.5 

 14.0 



44.6 

 38.0 

 40.2 

 40.3 

 41.9 



12-13 



14-15— 



16-17 





The index is high before the age of ten and decreases thereafter. The 

 decided drop at 10-11 may be erroneous. At the age of 16 the position 

 has reached that of the adult. The position of the umbilicus in the 

 small male child is similar to that of the woman. 



BODY LENGTH AND NEOK M:NGTH. 



The stature may be divided into four parts: Head length (chin to 

 vertex), neck length (chin to sternum), body length (sternum to pubic 

 spine), and leg length (trochanter to sole). The leg length has been 

 given, the other three remain. The body length is said to be 4 centi- 

 meters less than the distance from the suprasternal notch to the pu- 

 bis (37)^ and the upper end of the leg is parallel with the lower end of 

 the body, or 4 centimeters above the pubis. However, I find only 3 

 centimeters' difference between the piubis and the trochanter and as 

 the pubic spine is more definite than the trochanter I prefer to use 

 the spine. 



The body length from the supra-sternal notch to the pubic spine is as 

 follows : 



Body length ( iruncus ) . 



Group. 



Absolute. 



Eelatire. 





47.7 

 48.6 

 46.7 



30.0 

 31.3 

 30.8 



Highland 



Lowland 



Total 



47.7 

 47.7 



31,0 

 32.3 







