42 & Major-General Roy’s Account of the 
gueds, and the numerous vifitors whom curiofity drew to the 
ipot, met with the moil: hofpitable fupply of every neceflary 
and even elegant refrefhment. It will eaiily be imagined, how 
greatly this tended to expedite the work, and how much more 
comfortable and pleafant it rendered the labour to all who 
obligingly took part in it ; but more efpecially to him, who, 
being a volunteer in it at flrfb, confidered himfelf as bound to 
perfevere in his bed: endeavours to bring it to a fuccefsful con- 
elufiom 
From the defeription that has been given of the deal rods, it 
will be remembered, that they are fitted to be applied in mea- 
suring, either by the coincidences of lines, inlaid one inch and 
a half from each extremity, or by the conta&s of the fpherical 
lips of the bell-metal with which they are tipped. The fird, 
deeming to be the mod accurate, although the mod tedious 
method, was that by which we propofed to fet out. 
The flag-daff having been previoufly removed from the 
pipe, and" the brafs cup filled with water put in its dead, all; 
the neceflary precautions being likewife taken for p refer ving 
the line of direction,, horizontally, by the rope Aretched along, 
the fird hypothenufe, and vertically, by means of the boning 
rods ; the fird ivory line on the fird rod was brought by the 
plummet to coincide with the center of the cup, in which, 
pofition, being clamped,, it accurately marked the commence- 
ment of the bale. The fecond rod being now applied to the 
fird, and moved up by the apparatus formerly defcribed (tab* 
XVIII.) till its line coincided with that on the fird ; and, in 
like manner, the third rod being applied on the alternate fide 
of the fecond, moved up and clamped as the red; thus the 
exadt didance of fixty feet was afcertained, care being always 
taken-, that the fird adjudments were not didurbed, while the 
fubfequent 
