on the Dipping-needle. 
1 81 
May 6, 1775. 
79 o Index Weft. 
78 o 
79 45 
79 15 Index Eaft. 
79 15 
79 45 
78 30 Poles changed, index ftill Eaft. 
80 35 
80 10 
79 45 Index Weft. 
80 5 
79 4 ° 
Mean 79 0 2 8', 7 3. 
Thefe obfervations were made in the open air, on a 
t 
platform on the top of the fort. 
XI. Aftro - 
