54° The Account of a 
that the ranges of hills expressed in the plan found in our last 
account, were copied from authorities of the late Major General 
Roy. The map now given, of the operations performed in Kent 
(Tab. XII.), has the ground depicted in as accurate a manner 
as the scale will admit of, Mr. Gardner, from the minuteness 
of this Survey, being enabled to do it with accuracy. 
On adverting to a principal object of this undertaking, that 
of preparing materials for correcting the geography of the 
country, it may be expected something should be said, re- 
specting the accuracy of the maps of those counties in which 
our operations have been carried on. It is almost unnecessary 
to observe, that great correctness cannot result from the me- 
thods commonly taken in large surveys, which are usually 
made with an apparatus altogether unfit for measuring angles 
or bases with a sufficient degree of accuracy: and it will evi- 
dently appear, on applying the distances given in this, and our 
former paper, to those maps, that they are, generally, very 
defective. We must, however, observe, that Linley’s and 
Crossley’s Map of Surry, and Gardner’s Map of Sussex, 
are the best which have yet fallen under our notice : the first 
is, in some measure, indebted for its excellence to the Trigo- 
nometrical Operation in 178.7; and the latter to our own; as 
the distances between many stations, and the situations of 
many churches, in the southern, and western parts of Sussex, 
were given to Mr. Gardner prior to the publication of our 
last account. The geography of Devonshire and Dorsetshire 
is found particularly erroneous, as may be easily discovered 
by an application of bur distances to the best maps of those 
counties. 
