GEOLOGICAL NOTES. 203 



and Ward's Lane, but its thickness was constantly varying. 

 London-clay was visible for a horizontal distance of about lo 

 yards, at the bottom of the cutting, about 80 to 90 yards north 

 of Ward's Lane. The cutting from Cauliflower Lane to Hatch 

 Lane is 10 or 11 feet in depth. 



Fig I Sketch-map of Railway between Ilford and Woodford. 



Railways- - - Sta =; Station. B.H. = Buckhurst Hill, a ==; Cauliflower 

 Lane. b ^r^ Ward's Lane, c = Hatch Lane. C.Br. :.= Cran Brook, 

 d - - d -= Extent of Cuttiuf^. t - - t := Tunnel. Scale, i inch to the mile. 



