We are now nearing what is, perhaps, the most important part of the Battersea Home, the Infirmary--which is practically the condemned cell--the Lethal Chamber, and the Crematorium. The condemned cell is a huge kennel separated into two compartments, through the iron grating of which often as many as a hundred dogs are to be counted. It should be said that a dog is never put to death unless it is past all cure, and, further, that the means employed are as quick and humane as scientists have yet discovered. For many years the method of killing was by the administration of hydrocyanic acid, but Dr. B. W. Richardson, F.R.S., conclusively proved that the most painless way of causing death was by the use of narcotic vapour, and he superintended the erection of an excellent Lethal Chamber, which was finished in May, 1884, and since then has been in constant use. [Illustration: THE CONDEMNED CELL.] It is possible to narcotise as many as a hundred dogs at one time. This generally takes place at night. The unfortunate animals are conveyed from the Condemned Cell to a large cage some ten feet long, by four feet in depth and width. Two such cages--each of which is divided into tiers--are here. When the dogs are safely secured in the cage, they are taken to the chamber, the door of which is unlocked, the bar-bolt lifted, and the cage with its inmates is run into the Lethal apartment. Here it remains for some six or seven minutes, during which time the chamber is charged with carbonic acid gas, and a spray of chloroform is pumped in, which the dogs immediately inhale. This process of bringing about all that is needed is not strangulation or suffocation, but is essentially a death sleep. There are also two smaller chambers presented to the Home by Dr. Richardson, constructed on similar principles, intended for use when a dog has to be destroyed at once. [Illustration: LETHAL CHAMBER AND CREMATORIUM.] Exactly opposite the Lethal Chamber is the Crematorium. This is a white brick structure, with a chimney some 65 ft. high. It is so built that the bodies of the dogs do not in any way come in contact with the fuel; the heat being obtained from the coke furnace below. The door of the Crematorium is wound up by the means of a windlass, and the interior reveals a space of about 10 ft. long by 9 ft. in width. After the lapse of some five or six hours from leaving the Lethal Chamber, the animals are put in here. By the morning all that of them is a few charred bones, and in a corner of the yard may be seen a dozen or so of sacks, containing all that remains of many a domestic pet, waiting for the soap-makers (who buy them) to come and fetch them away. The number of dogs thus destroyed every week averages three hundred. A very touching incident occurred just where we are standing, only a few weeks before.