438 
Dr. Moll’s account of the experiments on 
Calculating UP the distance from Utrecht to the Pyramid 
of the Camp of Zeist, we have UP= 15180“, 5 metres. 
Again, in triangle U BP we have UP= 15180,5 metres. 
B P = 55 ° 53 ' I 9 "> 2 ) bv mensuration { < KUIB = S»° 3 °' 14",! by mensu- 
PB = 104 47 23, 1 } by mensuration » K U A = 49 10 25, 2 
UB= 191811,6) tor ( — — 
< UBP 
U 
P 
2 ration. 
179 5 8 53 > 9 
Substract. 2 19 48, 9 
< AUP = 21 38 0,5 
< PUB” 19 18 11, 6 
Thus we shall have 
UBP= 55 53 41,23 
U P B — _ 104 47 45,14 
PUB= 19 18 33,63 
Calculating with these data UB, we have it equal to 17725,8 
metres. 
But in A U B K, we have 
o / // 
U B K = 76 4 6 23,24 
B K U 2= 51 43 32,73 >found by calculation above. 
B U K = 51 30 4,03 3 
Therefore we find BK = 17670,85 metres. 
c. Third triangle. 
Naarden. Kooltjesberg. 
