swanton: aboriginal terms for brother and sister 35 



clan usage of the terms. A theoiy which has to admit so many 

 exceptions and which must grant the dominance of consan- 

 guineal considerations in all but a few cases may well be viewed 

 with suspicion. It is certainly a clumsy device when compared 

 with the alternative theoiy of a simple extension of terms 

 founded on the idea of blood relationship to groups of persons 

 hypothetically, though not actually, related. 



