=25.= Purchase and sales books of a special design are used, each having three special columns. It will be noted that neither purchases nor sales are recorded in detail, but that both purchase invoices and sales tickets are recorded by number, and only the totals extended in the proper column. The charges and credits are posted to personal accounts from the purchase and sales books. All purchase invoices are filed in numerical order. The sales tickets are kept in bundles, each day's tickets by themselves. The tickets of each department and each sales person are also kept by themselves. If it becomes necessary at any time to know the items of an invoice or sales ticket, it is an easy matter to refer to the files under the proper date and number for the desired information. The combined totals of the three department columns must equal the footing of the total column. All footings are carried forward until the end of the month, when the totals are posted directly to purchase and sales accounts, completing the double entry. In the ledger, purchase and sales accounts are kept with each department; but when the books are closed, the results from all departments are combined in the trading account. Instead of recording cash sales in a special column in the cash book, all receipts of this kind are entered in the regular _cash received_ column. These sales are not posted from the cash book, but are entered in the sales book daily. Thus they are carried forward in the footings, and at the end of the month the totals of the sales book represent all sales, both on account and for cash. =26.= The cash book in this set presents some new features. Instead of using both pages of the book, one page is used for both debit and credit. The bank account is also kept in the cash book, debit and credit columns being provided for this purpose. Deposits are entered in the bank debit column and in the cash credit column. Checks are entered in the bank credit column and posted to individual accounts. The other books used are the journal and ledger. The journal is used only for adjusting entries which cannot be made through the other books. SAMPLE TRANSACTIONS =27.= The business is opened by C. D. Walker, who invests $3,500.00 cash, which he deposits in the bank. The following transactions are recorded: --Jan. 12-- Bought from Hart, Schaffner & Marx, Chicago 50 suits $13.50 $675.00 15 " 16.50 247.50 -------- $912.50 Net; 2% 10. Invoice #1.