Next in value to the circular is the poster. The extent to which posters are used in London, which contains a highly educated population, is proof sufficient of its utility as a disseminator. But in the country the poster has never yet been resorted to as an aid to the bookseller. The auctioneers have found out its importance, and their bills are freely dispersed in every nook and corner. There are no keener men, and they know from experience that it is the cheapest way of advertising sales. Their posters are everywhere--on walls, gate-posts, sign-posts, barns, in the bars of wayside inns. The local drapers in the market towns resort to the poster when they have a sale at "vastly reduced" prices, sending round the bill-sticker to remote hamlets and mere settlements of two or three houses. They, too, know its value, and that by it customers are attracted from the most outlying places. People in villages and hamlets pass the greater part of their time out-of-doors and are in no hurry, so that if in walking down the road to or from their work they see a bill stuck upon a wall, they invariably stop to read it. People on the London railway platforms rather blink the posters displayed around them: they would rather avoid them, though they cannot altogether. It is just the reverse in the hamlet, where the inhabitants lead such monotonous lives, and have so little excitement that a fresh poster is a good subject for conversation. No matter where you put a poster, somebody will read it, and it is only next in value to the circular, appealing to the public as the circular appeals to the individual. Here are two methods of reaching the country and of disseminating a knowledge of books other than the employment of expensive travellers. Even if travellers be called in, circular and poster should precede their efforts.