BLOODGROUPS IN RELATION TO RACE 53 



heira lead to the important conclusion, that in a race the bloodgroup distri- 

 bution may diverge widely in different resorts and that this divergence of 

 the local groups is really larger than that which can be expected between 

 races themselves. This is not to be understood as if race should not have 

 an important relation of its own to bloodgroups, but only that rural resorts, 

 generally subject to a great deal of inbreeding, result in giving a blood- 

 group formula of quite a local nature. Indeed inbreeding takes place to a 

 considerable extent in the small inland communities of all these islands and 

 not until we have surveyed and perused a great many groups are we in a 

 position to get an idea of the bloodgroup condition of the concerned race. 

 Having done so, I expect to have sufficient evidence to forward the following 

 points, resulting from a material of more than 5000 individuals in the 

 Moluccas. This is not the place for figures and calculations, they can be 

 found in the Medical Periodical of the Dutch Indies 1931-1932. 



Indeed the bloodgroup distribution is for the Melanoid Malays otherwise 

 than for the Mongoloid Malays. For although the B group as I showed 

 you before, predominates more or less in some groups, the A predominates 

 to much greater extent and in more extensive areas. Moreover the B 

 percentage itself stands far behind that of Java and Sumatra, it scarcely 

 exceeds 20 per cent. There is an inclination towards the A group that has 

 not been found in the latter islands and that seems to be bound up with 

 the most isolated tribes. In this connection it is important that Dr. Miss 

 v.d. Made also found A affinity for the more isolated villages in the moun- 

 tains of West Java. So there is the probability that the original — and that is 

 non-Mongoloid — population of the Dutch Indies is inclined to A majority. 

 This holds further for the Papuans especially although it must be said that 

 even there the A predominance is not so uniform as might be expected of a 

 race with such specific and exclusive properties. 



