tion of the system may be best
described by the aid of the above example (the proceedings of the
columns being given only), which shows how a very large number of
personal accounts may be recorded upon a single opening of a ledger
provided the number of entries to be made against each individual be
few.

-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------
(a) | (b) | (c) | (d) | (e) | (f) | (g) | (h) | (i) | (j) | (k) | (l)
-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------
| |L s. d.|L s. d.|L s. d.| |L s. d.|L s. d.|L s. d.|L s. d.|L s. d.|
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |

(a) Reference No. (b) Name of Debtor.
(c) Amount due on 1st Oct. 1906 (d) Charges for Current Quarter.
(e) Total Debit. (f) Date received.
(g) Amount Received. (h) Discounts.
(i) Allowances. (j) Bad Debts.
{k} Amount due on 31st Dec. 1906 (l) Remarks.

[Illustration: FIG 1.--Card-Ledger Tray (Librry Bureau System).]

Slip system.

Another important application of modern methods consists of what may be
described as the _slip system_, which is in many respects a reversion to
the method of keeping records upon movable slabs or tablets, as in the
Babylonian accounts referred to at the beginning of this article. This
system may be applied to books of first-entry, or to ledgers, or to
both. As applied to books of first-entry it aims at so modifying the
original record of the transaction--whether it represents an invoice for
goods sold or an acknowledgment given for money received--that a
facsimile duplicate may be taken of the original entry by the aid of a
carbon sheet, which instead of being immovably bound up in a book is
capable of being handled separately and placed in any desired order or
position, and thus more readily recorded in the ledger. Postings are
thus made direct from the original slips, which have been first sorted
out into an order convenient for that purpose, and afterwards resorted
so that the total sales of each department may be readily computed;
after whic