! j 6 Gen . Roy’s Account of 
The winter months were employed in calculating the ob- 
fervations that had been made; and from thefe we were 
very well enabled to judge to what a degree of accuracy we had 
arrived in determining the Tides and angles: for Frant and 
Goudhurft, having been interfefted from Botley Hill, Wro- 
tham Hill, and Hollingborn Hill ; Goudhurft having been ob- 
ferved from Tenterden, and Frant having (contrary to our 
expectation) been leen and obferved from Fairlight Down, we 
had thereby the certain means of determining very nearly 
what difference there would be between the meafured and 
computed length of either bafe as given by the other, although 
obfervations had not been made at the two intermediate ftations 
of Goudhurft and Frant. This difference, it was feen, would 
fcarcely amount to one foot, or about Tx 4-o- -o^h. part of the 
whole diftance. In as far, therefore, as the refults of the 
plane triangles were concerned, we might have proceeded with 
the computations, and drawn the confequent conclutions,, 
without hefitation, or any rifk of fenfible error. 
But, befides that it might ftill have been faid that tne in- 
ftrument had not been placed at thefe two ftations, there were 
reafons of a different kind, which rendered it In fome degree 
neceffary to place the inftrument not only at Goudhurft and 
Frant, but alfo at Botley Hill and Folkftone Turnpike, where 
it had formerly flood. 
In 1787, when at the ftation of St. Ann’s Hill, in a very 
high wind, the box containing the axis level was blown from 
the fcaffold, and unluckily broken. Mr. Ramsden replaced it 
with one not fo good as the firft ; and it was with this iecond 
level that the obfervations of the pole ftar had been made at 
Dover Caftle. This caftle, although lofty, and fituated on a 
high chalk cliff, that raifes its northern turret about 466 feet 
„ above 
