We have entered the great red gates, and stand for a moment upon the threshold of the Receiving House, for a van passes almost at our elbow. Its appearance suggests "police"; at any rate, the driver is an indisputable representative of law and order in mufti. Those familiar cries betray who the inmates are--all sorts and conditions of dogs picked up by the police; this is a deposit of some thirty lost animals about to find apartments for a time. When the muzzling order was first put into force, such a van would have to run over to Battersea three and four times a day, and then leave a load of the lost behind. The conveyance is specially constructed for this purpose. Our friendly "policeman in plain clothes" opens the back door, and there one can see that the interior of the van is made into a tenement of two floors, the bigger dogs being placed below, and the more diminutive species above. Iron rings are arranged round the sides, to which the animals are attached by their chains. A small but important apartment, however, is that placed at the bottom of the van, between the two back wheels. It takes the form of a cage, with iron bars and a grating of fine wire. This is designed for the accommodation of a more than usually troublesome dog, sometimes one that is mad, so that he is carried from the police-station to the "Home" without upsetting the quieter-disposed dispositions of his fellow-animals above. [Illustration: IN THE CAGE.] Of course some dogs are brought here by kind-hearted individuals other than the police, and as many as 500 from all sources have been received in the course of a day. It is impossible to single out one part of London more famous for its "lost" than another--they arrive from the East and from the West. That delightful little King Charles which is just now cuddled up in a corner of the Receiving House has probably strayed from its customary luxuriousness of a drawing-room in Belgravia--it will surely be claimed in a few hours--whilst its next-door neighbour is a bull-dog, with a prodigious head, which strongly suggests pugilism and Whitechapel. The Receiving House is situated on your immediate right. It is the first room into which the lost dog goes when it claims admission to the home. A dozen dogs are waiting to be examined--collies, fox terriers, and two or three nondescripts in addition to the tiny King Charles and massive bull-dog already caught sight of. On a beam above, which stretches from one side of the apartment to the other, are hanging the chains and collars of the animals admitted during the past week, under their proper divisions of Monday, Tuesday, Wednesday, and so on. This little collection of a dozen are taken in hand one by one. Should any of them be suffering from rabies, they are at once sent to the "Condemned Cell," to which we shall presently pay a visit. The hon. veterinary surgeon, A. J. Sewell, Esq., is sent for, and if he endorses the opinion of the