EXPLANATION OF PLATE V. 



GIVING THE BOUNDARIES OF THE " VICE-COUNTIES 

 ON THE MAI'. 



The areas here adopted are those defined and promulgated by Mr. Hewett Cottrell 

 Watson, for the purpose of recording the distribution of British plants, and corre- 

 spond with the counties of Great Britain and Ireland, with the important modifica- 

 tions that the larger counties are sub-divided, that a few of the smaller are united 

 to adjoining counties, and that all detached or out-lying portions of counties are 

 considered as forming part of the counties by which they are surrounded. 



The following are the sub-divisions of the larger counties : — « 



I and 2.— Cornwall W. and E., divided by the high road from Truro through 

 St. Columb to the inland extremity of Padstow Creek. 



3 and 4. — Devon N. and S., divided by the watershed line which commences at 

 the Tamar, about mid-way between Tavistock and Launceston, passes over the ridge 

 of Dartmoor, and joins the western canal at Tiverton. 



5 and 6. — Somerset N. and S., divided by the river I'arret from Bridgwater to 

 Ilchester, the line thence curving round to the north extremity of Dorsetshire. 



7 and 8. — Wilts N. and S., separated by the Kennett and Avon Canal. 



10, II, and 12. — Isle of Wight, and Hants N. and S., the latter divided by the 

 high roads running W. and E. from Winchester to the borders of Wilts, and Sussex 

 respectively, through Stockbridge and Petersfield. 



13 and 14. — Sussex W. aud E., divided by the high ruad from Brighton to 

 CAicktield, thence through Crawley to the border of Surrey. 



18 and 19. — Essex S. and N., divided by the high road from Waltham and 

 Epping to Chelmsford, thence along the river Blackwater to its mouth. 



25 and 26.— Suffolk E. and W., divided by the first meridian E. of Greenwich. 



27 and 28. — Norfolk E. and W., also divided by the first meridian E. of Green- 

 wich. 



29. — Cambridge, includes the Newmarket detached portion of Sufilblk. 



30. — Bedford, includes a detached portion of Hunts. 



33 and 34. — Gloucester E. and W. , separated by the Thames and Severn Canal, 

 thence by the River Severn from the point of Confluence of the canal up to Tewkes- 

 bury ; 33 includes five detached portions of Worcestershire and one of Warwickshire. 



36.— Herefordshire, includes detached portions of Monmouthshire and Worces- 

 tershire (detached portions of Herefordshire are on the other hand included iw 

 Brecknockshire, Radnorshire, Shropshire, and Worcestershire). 



37. — Worcestershire, includes detached portions of Herefordshire, Shropshire, 

 Staffordshire, and Warwickshire (detached portions of this county are on the other 

 hand included with Gloucestershire, Herefordshire, and Staffordshire). 



38. — Warwickshire, includes detached portions of Gloucestershire and Wor- 

 cestershire. 



39. —Staffordshire, includes a detached portion of Worcestershire, which in its 

 turn includes an outlier of Staffordshire. 



40. — Shropshire, includes an outlier of Herefordshire (a detached portion of 

 Shropshire is included with Worcestershire). 



42 and 43. — Brecknockshire and Radnorshire, each includes a detached portion 

 of Herefordshire. 



50. — Denbighshire, includes the Llandudno peninsula and other portions of 

 Carnarvonshire lying E. of the River Conway, and also the detached portion of 

 Flintshire. 



53 and 54. — Lincolnshire S. and N., divided by the Witham from its mouth at 

 Boston to Lincoln, thence by the Foss Dyke to the border of Nottinghamshire. 



