registered mail must be signed for when the postman calls. Correspondence with remittances, whether registered or not, is generally entered in a remittances book. the remittances are checked with the amounts indicated on the letter or account which they accompany ,and the amount, method of payment and opener ’s initials are written on the corner of the document. Any discrepancy must be checked at once by the clerk in charge of mailing .In some firms the remittances book is taken to the chief cashier, who is required to sign for each item in the book.