i6 Schwartz & Beevor, Dawn of Human Intention. 



Fig. 3 shows the arrangement, and the effects of the work 

 both before and after re-sharpening. 



(57) The various types of scrapers are shewn dia- 

 grammatically in Fig. 4. 



S/mj»/e ^/Tcay^ A^o/b/fee/ 



Dot/6/e. 



A/o^k PVorA/rf^ Ec/^e^ s/rejy/i ///us 



Fig. 4. 



(58) It will be noted that knives are classed among 

 the instruments which are pulled. This classification is 

 based on anatomical considerations, and on the fact that 

 the Tasmanians have been observed using their stone 

 knives in this fashion. This they did by extending the 

 arm with the index finger pressed upon the knife at a 

 point furthest from the operator, and then drawing the 

 implement rapidly towards them. 



(59) These tools are usually triangular in cross 

 section, thus giving a thin cutting edge, the thick back 

 affording a resting place for the index finger, and giving 

 strength to the tool. 



