EXPLANATION OF “ VICE-COUNTIES.” 
‘THE areas here adopted are those defined and promul- 
gated by Mr. Hewett Cottrell Watson, for the purpose of 
recording the distribution of British plants, and corres- 
pond with the counties of Great Britain and Ireland, 
with the important modifications that the larger counties 
are sub-divided, that a few of the smaller are united to 
adjoining counties, and that all detached or outlying 
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 :— 
t and 2.-Cornwall W. and E., divided by the high 
road from Truro through St. Columb to the inland ex- 
tremity of Padstow Creek. 
3 and 4.—Devon N. and S., divided by the watershed 
line which commences at the Tamar, about midway 
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 
Parret from Bridgwater to Ilchester, the line thence curv- 
ing round to the north extremity of Dorsetshire. 
7 and 8.—Wilts N. and S., separated by the Kennett 
and Avon Canal. 
