The time to collect depends to a considerable extent upon the location and the class of patronage. In cities, as a rule, collections should be made weekly, as many patrons move frequently, and you lose track of them. It is proper and wise to present your bill as early after the service is rendered as possible. Bills should be presented to working men at the time of their regular payday. In country practice I have found it best to send statements monthly and to require settlement quarterly by cash or note. I have adopted this rule in a cotton country where it was the rule to only pay the doctor once a year, if at all. Farmers and planters can borrow money to pay the doctor as well as they can to pay farm hands and cotton-choppers, or at least can give notes bearing interest. When a man consults you and commences to run down some other doctor, require him to pay cash. He's in bad with the other fellow. Dead-beats should never be temporized with. Don't do a man's practice in the hope that he will pay you, when you know that he has beat the other fellow. While every case is to a certain extent a rule unto itself, yet, there are a few essentials that are necessary to make a success in collecting. The two principle rules are, to keep everlastingly after them, and never to lose their friendship. So long as you are on good terms there is hope. Keep your accounts collected closely. The man who carries more than one-third of his business on his books is a business failure. Old accounts breed knockers. Go thou to the lawyer and consider his ways--then cinch the money. Never employ a collector on commission. Your office girl will prove the best collector if you have not time to attend to it yourself. In fact, for general collecting, she will prove the best collector you can get. Give her an honorium in addition to her salary if she makes good. At many places the collector will be informed that the party she is seeking is not at home, or is not in the office. Instruct her to stay until they return, even if she finds it necessary to take her sewing along, and spend the day. Frequently the party desired is just hiding in another room, waiting until the collector leaves. Rather than stand the siege of a determined collector they will sometimes pay the bill. The collector should carry a note-book and jot down just what the debtor has to say. This should be done in the presence of the debtor. Collectors should always try to get something on account, even if only 25 or 50 cents. It keeps the account alive, and helps defray expenses.