376 



THE DEPOSITS. 



The evidence of the boulders and beach stones found in 

 the clays is also indicative of a stronger distributing force 

 than mere rainfall, especially as there was no catchment area 

 above the deposits. Rainfall would have caused a collection 

 of loose stones and rolled stones in the water streams, and 

 these would be found in the eroded valleys, but it could not 

 distribute these on the extreme top of the island. 



The boulders found on the highest levels are of all sizes 

 and found either in clay or where clay has been washed away. 

 Beach stones are also found in the clay of this period, and 

 later they got from the high levels into the heads and even 

 on to the lower beaches. Water agencies could not on our 



Diagram No. 6. 

 Showing Clay resting on eroded surface of decomposed metamorphic rook 



ai St. Martin's. 



r 



# 2.~ * ' 





•, ( »it { >,*L . k t, ( 

 €> 2 «> 



3. 



1, One foot of Soil ; 2, Clay with Pebbles ; 3, Decomposed Rock with straight eroded 

 surface ; Veins of Quartz in situ, resting on hard rock. 



small area move masses of 20 to 50 tons so as to roll them 

 smooth and deposit them at a distance ; but on the other hand 

 the sea could do the first on a beach, and ice could force such 

 stones to the positions in which they are now found. 



I have now to consider the evidence afforded by the 

 valleys. I shall take as examples two of our valleys, one a 

 long one and the other a short one. 



If the observer will take his stand on the Chene Hill at 

 the Forest, or still better on the Forest end of the Hougue 

 Fouque Road, and look in the direction of St. Martin's he will 

 be struck by the flatness of the outline, but will be quick to 

 notice that at the left of the picture there begin curves which 



