59° • The Account of a 
Head, and Wyke Church near Weymouth. Those are some 
of the principal objects which mark the coast, being very 
near it. 
Upon the commencement of the present business, the design 
was to divide it into two parts ; namely, one for ascertaining 
distances from the triangles, whose angles were to be observed 
with the large theodolite ; and the other, the interior survey of 
the country, in which a small instrument, made upon the same 
plan with the great one, was intended to be used. This in- 
strument being now nearly finished, that design will be car- 
ried into execution ; and as two or three hundred single bear- 
ings have been taken from the different stations, which cannot 
at present be made use of, an important addition will be made 
to the number of places already fixed, independent of others, 
whose situations will be determined with it, in the course of 
the survey. The result of this, as well as the other parts of the 
trigonometrical operation, will be given to the public, in the 
Philosophical Transactions. And should it be discovered, from 
the use of the small instrument, that any of the secondary tri- 
angles are erroneous, such errors will be corrected, as well as 
any errata which we may find in this account. 
From the instructions given to those who have the honour 
to be employed in this undertaking, namely, to consider the 
survey of the sea coast, in the first stage of the business, their 
principal object, the design is to carry on a series of triangles to 
the Land's End. For that purpose, there are already five new 
stations selected ; two in the Isle of Portland ; one on Charton 
Common, near Lyme ; another on Pilsden Hill, near Broad 
Windsor, and the other on a hill near Mintern ; all in Dorset- 
