The construction of the wonderful canon of logarithms

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44 Construction of the Canon.
three columns, "89 degrees". On the second
page, above, to the left, " 1 degree" ; and below,
to the right, "88 degrees". On the third page,
above, "2 degrees"; and below, "87 degrees".
Proceed thus with the other pages, so that the
number written above, added to that written
below, may always make up a quadrant, less i
degree or 89 degrees.
Then, on each page write, at the head of the
first column, "Minutes ofthe degree written above"
at the head of the second column, "Sines of the
arcs to the left "; at the head of the third column,
''Logarithms of the arcs to the left"; at both the
head and the foot of the third column, "Difference
between the logarithms of the complementary arcs ";
at the foot of the fifth column, "Logarithms of the
arcs to the right "; at the foot of the sixth column,
"Sines of the arcs to the right"; and at the foot
of the seventh column, " Minutes of the degree
written beneath".
Then enter in the first column the numbers of
minutes in ascending order from o to 60, and in
the seventh column the number of minutes in
descending order from 60 to o ; so that any pair
of minutes placed opposite, in the first and seventh
columns in the same line, may make up a whole
degree or 60 minutes ; for example, enter o opposite
to 60, I to 59, 2 to 58, and 3 to 57, placing
three numbers in each of the twenty intervals
between the horizontal lines. In the second
column enter the values of the sines corresponding
to the degree at the top and the minutes in the
same line to the left; also in the sixth column
enter the values of the sines corresponding to the
degree