New Flora of Surrey, 3 



Guildford. The west subdistrict lies almost exclusively on the 

 lower Greensand formatiou, and abounds in extensive heaths 

 and commons, with considerable elevations, as at Hind Head. 

 It is here, and in Districts 1 and 8 b, that several species which 

 occur in the adjoining parts of Hants should be sought ; the 

 Bramshot station for Lycopodmm covvplanatum is but a few yards 

 from the county border, while there is reason to hope that 

 Eriophorum gracile, now extinct at "Whitemoor Pond, may be 

 found elsewhere in this region. Pint/uinda lusitanica and Utri- 

 cularia intermedia also may possibly occur. 



3. Lower Wey is bounded W. and N. by District 1, the county 

 border and Eiver Thames ; E. by a line running N. from Hawk- 

 hurst Down to EflBngham Common, thence by Ocldiam and 

 Cobham Commons, St. George's Hill and Oatlands Park to the 

 Eiver Thames ; S. by District 2. Two subdistricts are separated 

 — a (north-west) and b south-east. The former contains chiefly 

 the basin of the Bourne Brook, and is marked by a line starting 

 from the Blackwater boundary on Hag Thorne Moor, thence 

 passing through Bisley to the Basingstoke Canal at Woking, and 

 following the northern bank of the canal to Ham Haw, and 

 thence N.E. till it meets the Eiver Thames midway between the 

 Eiver Wey and Bourne Brook. Subdistrict a is all but un- 

 trodden ground, and offers a wide field for investigation. The 

 Eiver Thames itself deserves further attention, and Potamogeton 

 ■pralongus, which requires confirmation for the county, will 

 probably be found there. 



4. Upper Mole is bounded N. by the continuation of the line 

 along the chalk crest from White Downs by Eanmer Common, 

 Box Hill, Pebble Hill, Eeigate Hill and Gatton to the Merstham 

 tunnel, and thence by Tolhurst and Willey farms to White Hill ; 

 E. by a line running S. from White Hill through Bletchingley, 

 thence E. by Coldharbour, and again S., passing a line W. of 

 Home and across Copthorne Common to the Sussex border ; S. 

 by the county of Sussex, and W. by Districts 2 and 8 a. 



5. Lower Mole is bounded N. by the Eiver Thames ; S. by 

 District 4 ; W. by District 3 ; and E. by a Ime startmg from the 

 point where Districts 4, 5 and 6 meet on Merstham tunnel, 

 thence N.W. through Chipstead, W. to the Eeigate and Baustead 

 road, which is followed N. to Tadworth, then past Epsom Downs 

 and Epsom Common to Esher Common, thence following the 

 railway northward to Claygate, and through Long Ditton to the 

 Eiver Thames. 



6. North-east Streams is bounded N. by the Eiver Thames ; 

 W. and S. by Districts 4, 5 and 7; and E. by the county of' 

 Kent. The two subdistricts are a (Hogg's Mill Stream and 

 Beverley Brook), and /; (Wandle and Metropolitan streams). 

 The water-parting dividing them runs N.E. from a point a little 



