52 Till-: MAMKAl TUKK oK TUK TKKO-WATTA, 



Howevei' tempting it may bo to assume, that the abori- 

 gines had learnt to split pebbles by means of a kind of 

 chisel, I do not think that such a theory is in harmony with 

 all the other facts we know as to their state of civilisation. 

 I rather feel inclined to think that these peculiar deeply 

 penetrating marks of percussion showing axi intensive pul- 

 verising of the nu»trix are in some way connected with the 

 physical constitution of the rock. With all reserve I may 

 advance the view that the homogeneous hornstone is less 

 elastic than the .saccharine quartzite. and that while the 

 former readily fractured when subjected to a blow coming 

 under the effective angle, the latter resisted more strongly 

 to the fracturing energy, and this resistance resulted, in a 

 deeper penetration of hammer into the matrix than would 

 have taken place had the rock readily yielded to fracture. 



(C) THE UNFINISHED REJECTS. 



The evidence deduced from these specimens will come 

 under the following heading, as it is essentially the IndicaJ 

 face that shows mai'ks of being wrought. 



5. EVIDENCE OF THE INDICAL FACE. 



If we examine a large number of tero-watta we always 

 find a number of specimens whose Indical face isi more 

 elaborately worked than that of others- We also perceive 

 that these specimens are distinguished bv a smooth, level 

 Pollical face. So far I have not found a single specimen 

 which ha."? an elaborately wrought Indical, and a rough, un- 

 even Pollical face. We may find specimens having a nice 

 smooth Pollical face, whose Indical face shows hardlv an 

 traces of being trimmed, but we will never find a rough 

 Pollical face combined with an elaborately chipped Indical 

 face. 



This fact proves conclusively that the production of a 

 good, smooth, level, Pollical face was an essential feature 

 in the manufacture of a tero-watta. Only such flakes that 

 possessed this quality were further wrought, should they 

 otherwise be considered as suitable. 



It is obvious that the trimming of the Indical face 

 was only necessary when the flake showed considerable 



