[ 1 
the very Angle, and identically the fame, as if it had 
been taken by the moft celebrated Inftrumcnr, inf 
Degrees and Minutes, and laid down by a Protrador ? 
The firft is much more expeditious, eafy and cer- 
tain, than the other. More expeditious, becaufe 
thofe Two Lines are fooner drawn than an Angle 
can betaken, which done, Two thirds of the Work 
is behind, viss. Writing down and Plotting. More 
eafy, as done with One- fourth of the Trouble. More 
certain, becaufe one may be liable to Miftakes in 
taking the Degrees or Minutes 5 in fetting down, and 
in protrading. And if it fhould fo happen, that one 
numerical Angle fhould be taken, fet down, or 
plotted to the wrong Coaft, (where they depend on 
one another) fo great an Error would enfue, that 
could not be retrievable, but by going on the Spot, 
and performing the Operation anew. Now the 
Plotting-Table, after Two Stations, proves every 
thing on the Spot ; for, from every Station you are 
upon, the Index mud point at the fame time to 
any Station on your Map, and its correfponding Ob- 
j^ed in the Field ; which is a demonftrative Proof, 
for nothing but Truth will agree. 
In feveral Branches of the Mathematics, it is ab- 
folutely nccelfary to take Angles in Degrees, Minutes, 
and their SubdiviRons, as Aftronomy, Trigonometry, 
Navigation, Longimetry, inacceffible Heights and 
Diftances, <&c. and alfo in taking large Plans, to 
calculate and prove Things by Trigonometry ; which 
would not only be a Work of Curiofity, but very 
commendable. But where the Nature of the Thing 
will admit of as good Proof, with One-tenth-part of 
the Trouble and Time 5 it would be like running the 
So- 
