INTRODUCTION. xlli. 



Washington, Highden, Findon, West Tarring, and Heene to 

 the sea, a little west of Worthing. There is perhaps a 

 greater diversity of soil in this district than any other. It 

 includes the greater part of St. Leonard's Forest, and 

 stretches across the country in its widest part. It is drained 

 by the Arun and a few tributary rivulets. This district has 

 also been explored, although less fully than the former, by 

 the West Sussex Society. 



III. ADUR. Arun boundary from the sea to Plummer's 

 Plain, thence Ouse boundary to Rottingdean and the sea, a 

 little E. of Brighton. Drained by the Adur, whose eastern 

 and western waters coalesce about a mile and a half W. of 

 Henfield, and by its numerous tributaries. Wm. Borrer 

 who resided at Henfield, thoroughly examined this 

 district, and most of his herbarium specimens were collected 

 here. In addition we have Mrs. Merrifield's very reliable 

 and pleasantly written " Sketch of the Natural History of 

 Brighton," with a list of flowering plants contributed to it 

 by Mr. W. Mitten, of Hurstpierpoint. 



IV. OUSE. Cuckmere boundary to Cross-in-Hand, 

 East Rother boundary from there to Castle Hill, near 

 Rotherfield, then turning westward across the ridge of the 

 Weald to Sand Hill, Stone Cross, Crowboro' Gate, Duddles- 

 well Gate, Sweet Mine Pits, Nutley Hill, Charlwood, 

 Charlwood Gate, Wych Cross, Cold Harbour, Tynes Cross, 

 West Hoathly, Turner's Hill, Half Smock, across Balcombe 

 Down and Highbeech Warren to Handcross, thence on to 

 Plummer's Plain, turning S.E. past Eastland's Farm, Slut 

 House Farm, Warninglid, Slough Green, and Whiteman's 

 Green to Cuckfield, Butler's Green, over the Tunnel at 

 Haywards Heath, taking the road to Wivelsfield by way of 

 Westwood to Ditchling and Westmeston, striking the Downs 

 E. of Ditchling Beacon to Falmer, Newmarket Hill and 

 Rottingdean. Drained by the Ouse, which has a larger 

 catchment basin than any other river in the county, and by 

 its tributaries, the Uckfield River, the Black-brook, and the 

 Ritch. This District has been well worked out by Mr. W. C. 

 Unwin, Mr. J. H. A. Jenner, and other members of the 

 Lewes and East Sussex Natural History Society. 



V. CUCKMERE. E. Rother boundary to Cross-in-Hand, 

 thence W. of Passingworth Woods to Hawkhurst Common, 

 East Hoathly, Stone Cross (to the W. of Vert Woods) across 

 the Dicker to Berwick, Alfriston, and Chinting, thence to 



