372 



BEAX. 



Tiie length of tlie TadiiLS PejDaratcs the European and Negro still 

 further than does the length of the forearm, which indicates that this 

 dimension is a good differential ?actor for large groups of individuals. 

 The length of this part in relation to the uiDpei' arm may also help to 

 diffei'eutiate the world's groups of people. 



THE R.\DrO-nUMERAI, INDEX OR BR.\CIIIAL INDEX. 



This is equal to the radius times 100 divided by the humerus, or, in 

 the living, it is the forearm times 100 divided by the upper arm. For 

 175 Taytayans it is 71. S, for 104 Igorots(3) (p. 425) it is 76.2, and for 

 the Malays(18) (p. 252) 73.2 (Senoi 76.0). 



Topinarti gives the Eui-opean 82.2 to 86.8 and the Negro%s 87.9 to 93.4. 

 Martin fovind the brachial index unsatisfactory as a differential factor because 

 of the varied results of different authors, due no douljt to lack of a uniform 

 standard for taking the measurements. However, Hoffmann (36) makes the 

 European index 78.8 on the living, and Annandale( 18) (p. 147) gives that of 

 the Semang as 98.7. The radio-humeral index (skeleton) given by Soularue(29) 

 follows : 



19 Europeans 



12 Chinese and Annainese 

 22 Americans 



13 Malayo-Polynesians 

 21 Negroes of Africa 



6 Negritos 



73 



75.4 



7G.3 



76.8 



78.0 



78.3 



There is a gradual transition from the European to the African. Evi- 

 dently the Taytayans are more like the European than like the Negro 

 or Negrito. 



THE HAND LENGTH. 



The absolute hand length of 176 Taytayans is 17.55 centimeters and 

 the relative is 11.05, that of the Igorots(3) (p. 424) is 16.0 to 17.8 centi- 

 meters absolutely and 10.6 to 11.3 relatively, and of the Malays(lS) (p. 

 250) is 16.0 to 18.7 centimeters absolutely, and 10.5 to 12.5 relatively. 



Martin gives the following for other peoples. 



Group. 



Absolute. 



Kelative. 





16.3 

 16. S 

 16.9 

 17.0 

 17.8 

 16.8 

 18.5 



10.1 



10.2 



10.5 ! 



10.6 



10.7 



10.9 : 



11.2 



11.3 



11.5 



11.5 



11.7 





Malay __ 



Battaks 





.Sikhs. 





Senoi 





Jews _ -. 









.Tapane-so students 



Veddrth.s 





18.7 

 18.4 

 18.4 



Ainos 









