made in the Auflrian Netherlands. 183 
Repeated obfervations for the error of the line of col- 
limation gave i ; 5 8^,7 additive to the zenith dillances. 
I always obferved both the limbs of the Sun on the 
meridian, when the weather would permit: its declina- 
tion was computed from the Nautical Almanac: its par- 
allax and all refractions, account being always kept of 
the height of the barometer and thermometer, from 
Profeffor mayer’s tables, publifhed by the Board of 
Longitude. 
The declinations of the fixed Bars were taken from the 
ConnoiJJdnce des terns . The corrections on account of 
aberration and nutation, were either taken from the 
fame ephemeris, or computed. 
My fon always obferved n ’s fatellites with a reflector, 
made by short, of eighteen inches focal length, mag- 
nifying 9 5 times. I obferved them with a reflector of 
two feet and a half focal length, made by wing, magni- 
fying the diameter of the object about 200 times. 
The clock was a compound gridiron pendulum, made 
by the Sieur le paute at Paris. 
The equal altitudes were taken with a quadrant of 
eighteen inches radius. 
This agronomical journey was undertaken at the re- 
queft of the government here. They expreffed a defire 
that the fituations of fome of their towns, at leaf, fhould 
be determined by obfervation; and I readily concurred, 
without regretting either trouble or expence, in a project 
which had public utility in view. 
I am, Sec. 
Cor- 
