98 Mr . aubert’s Method , 8cc. 
In a fimilar manner, the mean time of any obfervation 
made with a clock, regulated to lidereal time, may be in- 
ferred, provided the preceding tranlit of the S un hath been 
obferved ; for if from the time of the obfervation by the 
clock, increafed, if neceffary, by 24 hours, the time of 
the obferved tranlit of the Sun be fubtraCted, the re- 
mainder, diminifhed by the proportional part of 3' 5 5 // ,9 1 
and duly corrected by the equation of time for the pre- 
ceding noon, will give the mean time required. It is 
underitood, that the clock keeps the rate of lidereal 
time exactly ; for if not, a further correction for the lofs 
or gain fince noon mult be applied. 
V. An 
