66 



LONDON DISTRICT. 



which follow a major and a minor direction at right angles to 

 each other, tends to confirm this theory. 



FLINT IMPLEMENTS. 



We have kept the subject of the associated flint implements 

 to the last division of our account of the River Deposits, because 

 of the large number of unsolved problems involved. The occur- 

 rence in the gravels of the Thames of stone implements made 

 by man has been known for more than two centuries : about 

 the year 1 690 a ' British weapon ' was found together with an 

 elephant tooth at Black Mary's Hole near Gray's Inn Lane, 

 and is now in the British Museum. During the 19th century 

 large numbers of implements were collected, but for the most 

 part it is only of recent years that they have become the subject 

 of a science rather than of a hobby. This science was developed 

 on the continent, where a series of types of culture has been 

 named from important localities and arranged in a chronological 

 order; the accompanying table gives these divisions with the 

 forms of implements most characteristic of each; it is taken 

 mainly from Mr. R. A. Smith's short paper on ' The Classification 

 of Palaeolithic Stone Implements J1 ; the subject, as a whole, 

 should be studied in his British Museum Guide 2 and in 

 Professor Sollas's fascinating work. 3 



CLASSIFICATION OF ANCIENT STONE IMPLEMENTS. 



Eolithic . /Plateau /Nodules, rudely chipped on parts of the edges only 

 \ Drift. \ to form single or double scrapers, borers, etc. 



1 Proc. OeoL Assoc., vol. xxiii, 1912, pp. 137-147. 



2 ' Guide to Antiquities of the Stone Age', British Museum, 2nd Ed., 1911. 



3 ' Ancient Hunters/ London, 2nd Ed., 1915. 



