Manchester Monoirs, Vul. lizi. {igog), No. H. 21 



reality been discarded as useless for further work. The 

 amount of re-sharpening to which the tools of a given 

 industry were subjected, depended to some extent on the 

 abundance or scarcity of natural fragments of suitable 

 character, or of the quantity of material available from 

 which suitable flakes could be struck. Where flint was 

 scarce, the tools are found to have been re-sharpened as 

 much as possible before being discarded. 



(73) One of the objections urged against the authen- 

 ticity of Eoliths is the large numbers in which they are 

 found, compared with Palasoliths. We should, however, 

 expect that tools which were used for general purposes, 

 and which could be fabricated in a few minutes from 

 natural fragments, and which sufficed at the most for less 

 than half-an-hour's work, would be much more numerous 

 than the Palaeolithic implements which were designed and 

 reserved for special uses. 



IV. Chronological Sequence of the Eolithic 

 Industries. 



(74) The sequence of the purely Eolithic Industries 

 and their relationship to the Palaeolithic and Neolithic 

 groups, according to Mons. Rutot's classification, are 

 given in Table I. 



Table I. 



Classification of the Lithic Industries, by M. A, Rutot. 



Note. — The purely Eolithic industries are shown in italics. 



TER7IARY. 



Period. Industry. 



/Lower 



Oligocene] Middle Fagnien (Hautes Fagnes, Belgium). 



lUpper 

 I Lower 

 Miocene -| Middle 



lUpper Cantalien (Cantal, France). 



