Undoubtedly the best method for the removal of refuse is the house to house call, but except in suburban districts and for the collection of refuse from the better class of dwelling-houses and public institutions, the expense, delay and difficulty which would be incurred in calling at every house throughout a town, would make it almost impracticable, and consequently this system is universally combined with that which is known as the bell or signal system, which simply means that the scavenging cart in going its rounds has a bell attached to it, or the horse, which bell rings automatically as the cart proceeds on its way; or the man in charge blows a trumpet, or calls in stentorian tones, “Dust oh!” On hearing this signal, _but not before_, the householder is expected to bring out the refuse in some convenient receptacle, which is then emptied into the cart by the scavenger. As a matter of fact, the receptacles containing all the waste products of these householders are brought out and are placed in the gutter of the street close to the kerb, long before the cart makes its appearance or can be reasonably expected to do so. The result of these (generally inappropriate) receptacles filled with heterogenous collections of house refuse being left unprotected in the public streets, is that their contents are quickly strewn about the surface of the street, by their being upset accidentally, or purposely, and the appearance of the street, which has probably been carefully swept and garnished during the night or early in the morning, quickly assumes, especially in a high wind, a very offensive character, and probably has to be entirely re-swept and cleansed before the ordinary traffic of the day commences. To obviate this evil I must refer my readers to a small book on the subject of scavenging, entitled ‘Dirty Dustbins and Sloppy Streets,’ published by Messrs. Spon & Co., written by myself, in which I have suggested moveable iron cylinders being placed in the streets for the reception of the house refuse. The “house to house” call system in the suburbs of a town may be greatly assisted by a very simple remedy, which has already been tried in some towns with considerable success. It consists in the householder placing a card bearing the letter D, or some other distinguishing mark, in a conspicuous place in a window, when the services of the scavengers are required; these cards should be printed and circulated by the Sanitary Authority of the district, who should state on the back of the card the days on which the scavengers would visit each neighbourhood, with the approximate hour of the day in which they would appear, in order that the householder may not be unnecessarily inconvenienced by being obliged to keep the card for any length of time in his window. The scavengers in passing observe the signal, and call at the house; otherwise they pass on, unless specially called in by the occupants, thus avoiding any unnecessary delay in their rounds.