Gen. Rov’s Account, See. 
Ramsden himfelf at firft imagined. Without meaning to 
difappoint, this ingenious artift was perhaps in the outfet too 
remils and dilatory, and accidents having happened when the 
workmanfhip was already far advanced, which he could not 
forefee or prevent, the execution has thereby been greatly re- 
tarded. However, fince the inftrument may at prefent be con- 
fidered as nearly fi niflied (fuch parts as yet remain to be per- 
fected being only of the fmaller kind), we may fairly conclude, 
that early in the enfuing fummer, or as foon as the weather in- 
this country will permit, the trigonometrical operation may be 
begun. In this fate of things, I have therefore judged that 
it might be proper to lay before the Society a fhort Iketch of 
the mode which is propofed to be followed in ful- 
filling his Majefty’s commands, accompanied by a 
very flight general map of the country, only col- 
lected from the common furveys, but f ill fuffi- 
cient to fhew nearly the difpolition of the triangles 
that will be made ufe of in forming the junctions 
between the meridians of the two Obfervatories. 
In this bufinefs it will be underftood, that I mean 
to adhere to luch principles as have been univer- 
fally received and admitted as juft. 
In every feries of triangles where each angle is 
to be aCtually oblerved with the fame inftrument, 
they fhould, as near as the circumftances will 
permit, be equilateral : for were it poffible to 
choofe the ftations in fuch a manner as that each 
angle fhould be exaCtly 60 degrees, the half num- 
ber of triangles in the feries, multiplied by the 
length of one fide, would, as in the annexed 
figure, give at once the total diftance ; not only the fides of 
the 
