6 Schwartz & Beevor, Daum of Human Intention. 



and in this connection we recognise the following classes 



of tools : — 1 



(i) Striking. 



(2) Pushing. 



(3) Pulling. 



(4) Rotating. 



Each of these classes contains sub-divisions, which 

 will be dealt with in detail. 



(21) Class I. Striking Tools. 



{a) Hammer stones. 



{b) Chopping tools. 



{c) Pick hammers. 



{d) Anvils. 



{e) Sharpeners. 



(/) Fire stones. 



{g) Throwing stones. 1. 



(22) Class II. PiisJiing Tools. 



(a) Simple push-planes "l For use on bone, 



(b) Double push-planes I wood, or hard 



(c) Convex push-planes I material. 



(d) Push scrapers or For use on skins or 



" Sleekers " soft material. 



(23) Class 111. Pulling Tools. 



{a) Simple scrapers. 

 ijy) Double scrapers. 

 {c) Concave scrapers. 

 [d) Convex scrapers. 

 {e) Knives. 

 (/) Burins. 



(24) Class IV. Rotating Tools. 



(a) I5orers. 



