1 8 Schwartz & Beevor, Dawn of Human Intention. 

 III. Re-Sharpening. 

 (66) The method of re-sharpening a blunt tool by 

 striking off from one side of the cutting edge with another 

 stone a series of small contiguous flakes, has already been 

 referred to. This method is applied only to push-planes 

 and scrapers ; knives were not re-sharpened, as the knife 

 edge could not thus be reproduced. 



Goitn^ido/ t/se^/hr CorrHrroous 

 ^cf^wr^rio^ in one. Of'r^c^o^. 



S/c/e. oy Cey/fir7^ jEafffes o^/e/ 



3or/ng iho/ose^/hr Oe^rri-rokif/ott 

 Of eac/f Ci/f/rng^c/^e . 



Fig- 5- 



CHARACTERISTIC TRACES OF WORK ON BOklNT, TOOLS. 



{6y) A series of fine minor flakes can also be got by 

 pressure. This may be done by holding the cutting 

 edge at an angle approaching a right angle to a hard 

 smooth surface, and drawing it under pressure either to 



