A HISTORY OF HERTFORDSHIRE 



moreover able, by bringing fragments of flint together, to reconstitute 

 the original blocks out of which implements had been chipped. The 

 occupation by man of the ' Paleolithic floor ' must have extended over a 

 long space of time, and Mr. Smith thinks that two series of implements 

 may be distinguished. The contorted beds of brick-earth in and below 

 which they are found seem to belong to a more recent date than the 

 Glacial period, during which the boulder clay of this part of England 



FIG. i. 



FIG. 2. 



FIG. 3. 



FIG. 4. 



FIG. 5. 



was deposited. Specimens of the implements from the Caddington dis- 

 trict are shown above in figs, i to 5. 



There are at present no more Palaeolithic discoveries to record from 

 the basin of the Colne ; but it may be mentioned that I have a flake 

 from the brick-earth at Barnard's Heath near St. Albans, which has the 

 appearance of belonging to Palaeolithic times, so that a further search 

 upon the spot might lead to more conclusive results. I have also 

 recorded the finding of an implement at North Mimms, 1 but possibly 

 there may be some mistake in the matter. 



We must now consider the watershed of the Lea and its tributaries 

 so far as Hertfordshire is concerned. A passing reference only need be 



1 Proc. Sac. Ant., 2nd ser. vol. v. p. 165. 

 226 





