for ascertaining the distances of clusters of stars , &c. 439 
“ 1783, 1799, 10 feet telescope. With 120, and an aper- 
44 ture of 4 inches, easily resolvable; with 5 inches, stars 
“ become visible; with 6 inches, pretty distinctly visible; and 
44 with all open, the lowest power shows the stars.” 
44 1785, 1786, 20 feet telescope. A brilliant cluster, 7 or 
“ 8 minutes in diameter ; the most compressed parts about 2 
44 minutes.” 
With an aperture of 5 inches the 16 feet telescope had a 
gaging power of 15.53 ; and this cluster is consequently of a 
profundity of the 186th order. 
Observations of the 13th of the connoissance. 
44 * 799 > 1805. It is very plainly to be seen by the eye.” 
44 1799, 7 feet finder. Very visible.” 
44 1783, 7 telescope. With 227 plainly resolved into 
44 stars,” 
44 1 799 > 10 feet telescope. With an aperture of 4 inches 
44 the stars cannot be distinguished ; with 9 inches, very 
44 beautiful.” 
44 1787* x 799 > 20 feet telescope. The stars belonging to 
44 the cluster extend to 8 or 9 minutes in diameter ; the most 
44 compressed part about 2 or 2f; the latter is round, the 
44 former irregular.” 
44 1805, large 10 feet telescope. A brilliant cluster all 
44 resolved into stars.” 
By the observation of the 7 feet telescope, the profundity 
of this cluster is nearly of the 243d order. 
