1 16 Mr. Lax's Method of finding the Latitude of a Place , 
This process will require very little explanation. The first co- 
lumn contains the observed double altitudes, as they were read 
off from the sextant; the second contains the corresponding 
times given by the clock ; the third contains the times from 
noon determined, with sufficient exactness, by taking half the 
interval betwixt the first and last observations, (in which the 
altitudes are equal,) and supposing this to be the time elapsed 
betwixt the first observation and the sun's reaching the meri- 
dian. The fourth column is formed of the log. cosines of the 
hour-angles taken immediately from the argument of the first 
table ; and the last column exhibits the latitudes deduced from 
every two corresponding altitudes, and is intended to shew the 
agreement betwixt these results. 
It is not necessary that we should employ the tables in this 
operation : for we rhay take the log. cosines of the hour-angles 
from Taylor’s Logarithms, after the time is reduced into de- 
grees, minutes, and seconds; and, by dividing the area gb = 
753 7, by the area gc — 203, (the natural number belonging to 
the log. 3,3081,) we shall obtain the correction required. 
