We shall not go through the details of every operation singly, since the table and diagram sufficiently indicate them; we shall merely notice some few peculiar cases.
By Operation 6, a positive quantity is turned into a negative quantity, by simply subtracting the quantity from a column which has only zero upon it. (The sign at the top of
would become—during this process.)
Operation 7 will be unintelligible, unless it be remembered that if we were calculating for
instead of
, Operation 6 would have completed the computation of
