30. Explain the benefits to be derived from the use of the color scheme. 31. What is meant by _compound forms_, and under what conditions can they be used? 32. In what general way does retail dry goods billing differ from condensed billing and what is the difference in the general style of stationery used? 33. What is the best plan of filing the duplicate monthly retail dry goods bill? 34. What is the plan used in retail dry goods billing to prevent goods from being shipped out of the store without a charge being made? 35. What is the advantage of a subtracting device on the billing machine with adding attachment? INDEX _The page numbers of this volume will be found at the bottom of the pages; the numbers at the top refer only to the section._ A Abstract of sales 1 Accounting forms, special 146-161 cash books 155 ledgers 147 balance 152 card 148 loose-leaf 147 tabular 152 pay-roll records 160 tabular sales book 157 Accounts with trust provisions 180 Adding machine and cylinder billing machine combined 301 Adding machine and typewriter combined 289 B Back orders 262 Balance ledgers 152 with two balance columns 154 with two credit columns 154 for installment accounts 155 Bearing the market 229 Bid price 229 Billing machine development of 242 how to handle orders and bills on 280 Smith Premier 300 Billing and order recording 235-301 acknowledgment of order to salesman 268 analysis of quantities and amounts 257 back orders 262 billing machine 241