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PEOCEEDINGS OP THE GEOLOGICAL SOCIETY. [June 19, 



rhizome, rose in a serpentine direction to the seam of gravel 2 feet 

 above, where it ended, and no trace of it was seen either in the gravel 

 or the sand above. This section was seen by Mr. Flower and Mr. 

 Searles Wood, the latter of whom suggested, in explanation of the 

 position of the frond, that the rhizome of the fern must have been 

 washed down by the stream, the heavier part resting on the bot- 

 tom, and the frond rising towards the surface, in which position it 

 must have become imbedded in volumes of sand. If this expla- 

 nation is correct, it is evident that the flow of the river at that time 

 must have been from west to east, viz. the direction of the present 

 river. I leave it, however, for botanists to determine whether it may 

 be possible that the rhizome of a fern of the surface-period may, by 

 natural growth, have descended to so great a depth as 8 feet 6 inches 

 from the surface. 



Section G, at the top of Lome Terrace, surface 83 feet, furnished 

 the largest and best-formed implement discovered in this place. It 

 is triangular, 8 inches long and 4 inches at the base ; the natural 

 surface of the flint is left at the butt-end. It was found beneath 

 several deposits of sand, gravel, and brick-earth, at a depth of 13 

 feet 6 inches from the surface. The upper surface of the London 

 Clay was here seen to slope gently upward towards the north. 



Section H (fig. 4), shows the position of a number of flakes remark- 



Fig. 4. — Section H, in High-terrace Gravel north of Chaucer Road. 

 Surface 82 feet. 



9 ft. 







-'fSot;* 



a. Surface soil, 6 in. b. Brick-earth with seams of white sand, 4 ft. c. Gravel 

 with seams of white sandy clay, 4 ft. 6 in. d. London Clay. 



