264 23 r. Maskelyne’s Attempt, &c. 
fixed {tars could not appear fo fmall as they have been found to 
do through the beft telefcopes, and particularly by Dr. Her* 
schel with his excellent ones. To this I anfwer, that the 
ocular aberration, which is proportional to the diameter of 
the pupil when we ufe the naked eye, is proportional to the 
diameter of the pencil of rays at the eye when we look 
through a telefcope, which being many times lefs than that of 
the pupil itfelf, the ocular aberration will be diminifhed in 
proportion, and become infenfible. 
V 
