part 1] THE LATE- GLACIAL "STAGE OF THE LEA VALLEY. 003 



22. The Late-Glacial Stage of the Lea Valley (Thiud 

 Report). By Samuel Hazzledixe Warren, E.G.S. 

 (Read February 28th, 1923.) 



Shortly after the publication of the later of the previous papers 

 on this subject, I discovered another exposure of the Late-Glacial 

 deposits of the Lea Valley. It was found under rather unsatis- 

 factory stratigraphical conditions, during some small secondary 

 digging in a practically abandoned gravel-pit of large size. The 

 sides of the pit are sloped down and overgrown, and in part built 

 over, so that the stratigraphical relations of the deposit in question 

 are obscure. 



The site is on the higher margin of the 50-foot, or Taplow, 

 Terrace, immediately below the 100-foot contour, east of the New 

 River, and north of the road which runs through Barrowell Green, 

 between Winchmore Hill and Palmers Green, Edmonton. 



On the first visit, I noticed a bed of clay, about a foot thick, of 

 which several yards could be seen. As it was clearly in place, and 

 had been left as unprofitable during the digging, I took a sample 

 home, and found it to yield seeds, but comparatively little vegetable 

 debris apart from the seeds, so it was unusually eas} r to work for 

 the purpose in hand. 



A few days later I spent an afternoon in the pit, washing out as 

 much of the clay as I could in the time, and forwarded the results 

 to the late Mr. Clement Reid. He sent me a preliminary list and 

 statement, which were not intended for publication until the 

 identifications had been checked ; this work Mrs. E. M. Reid & 

 Miss M. E. J. Chandler have now kindly completed, and their 

 enlarged list is appended. In those days of the great War one 

 could not legitimately spend too much time on such work, and I 

 am astonished at the comparatively long list of species obtained 

 from a relatively small amount of material, as compared with the 

 large quantities worked through from each of the other sections 

 previously described. 



1 obtained from one of the workmen a very good Late Chellean 

 implement, which he said that he had found at the base of the 

 gravel in this pit at Barrowell Green ; it had been reposing for 

 some years on a rockery in his garden. It is a contemporary 

 implement, and not a derivative ; nor do I doubt his testimony, as 

 the specimen would be normal for the corresponding situation and 

 level at Stoke Newington. Although one could not regard this as 

 critical evidence, I think that we may take it as tending to confirm 

 the date which should be assigned to the deposit, according to its 

 position and level. But, if this be correct, we are in some difficulty 

 with the Arctic Bed, which in these circumstances ought not to be 

 there. 



There is a considerable weight id' cumulative evidence for a 

 temperate climate during Taplow Terrace times, with less frost 



