OLLIS BROOK 

 GO FT CONTOUR 



OO FT CONTOUR 

 IBERNATING POND 



AST TOTTE RIDGE 



ARGE TOTTERIDGE 

 IGHEST POINT 4IO FT 



MIDDLE TOTTERIDGE 

 WEST TOTTERIDGE 

 OTTERIDGE LANE 



OO FT CONTOUR 



URTONHOLE BROOK 



COMPASS 



900 YARDS 



Fig. 25. Map of the Area Used for the Migration Studies 



The arrows show the direction of the flow of water in the ditches. Minor 



ponds not referred to in the text are shown as black patches. Note that 



the map is not drawn due north and south. 



lOI 



