432 Dr. Moll’s account of the experiments on 
comparison of our experiments, with the observations of 
other philosophers, is also annexed to this paper. 
SECTION III. 
Observations to ascertain the distance between the stations of 
Koolpjesberg and Zevenboompjes. 
A. Mensuration of angles with a ten-inch Repeating Circle , 
made by Lenoir, in Paris. 
a. Angles measured on the steeple of the Cathedral of Utrecht . 
«. Between Kooltjesberg and Amersfoort. 
The reduction to the centre of station has been made by the 
well known formula C = O + r -^ ri s / Q y' 1 — taken from 
Belambre’s base du Systeme Metrique, et Puissant’s Traits 
de Geodesie. 
Mean angle 49° 11 18 ,2 
.Reduced to the center 
station 49 0 10' 25", 2. 
Date. 
No. 
Observa- 
tions. 
Repeated 
Angfes. 
Single 
Angles. 
1823. ( 
1. 
twice 
O ! Jl 
98 22 30 
0 » „ 
49 n 15 
2. 
4 
*9 6 4$ 
49 n *S 
1 Aug. P 
3- 
6 
295 9 
49 11 20 
3 b P.M. j 
4- 
8 
393 3 1 3° 
49 11 26 
l 
5- 
10 
49 1 S 2 3° 
49 11 15 
ft. Angles measured at Utrecht between Kooltjesberg and 7 Boompjes, 
Date. 
No. 
Observations. 
Repeated 
Angles. 
Single 
Angles. 
1823. 1 
1st. Aug. J 
3 h P. M. i 
1. 
2. 
3 - 
4. 
5 - 
Double 
Quadruple 
Sextuple 
Octuple 
Decuple 
O III 
IO3 2 30 
206 5 
309 6 30 
412 9 
515 10 30 
0 / » 
51 31 15 
5‘ 31 15 
SI 31 s 
51 31 7 >S 
5 i 3 i 3 
Mean angle 51 0 31^ 9",!. 
Reduced to center of sta- 
tion 51° 30' 14",!. 
