<s xml:space="preserve">
At the top of the page is a table of sines for every 45 minutes, with fourth differences.
The sine of 48.45' is highlighted.
<lb/>
In the centre is a table of sines for every 15 minutes, with third differences.
The sine of 48.45' is in the final row.
<lb/>
At the bottom is a table of sines for every 15 minutes, calculated from the row for 48.45
on the assumption that the fourth difference is constant at
56 for the upper half of the table, 55 for the lower </s>
<s xml:space="preserve">]</s>
</p>
</div>
<head xml:space="preserve" xml:lang="lat">
Ad calculum sinuum, per