“There are several killing houses for diseased cattle, and excellent apparatus for boiling down condemned meat. For this purpose two boilers are suspended from a strong platform through which they pass, and the bottoms of them are several feet above the floor. They are each 4 feet 6 inches in diameter and 10 feet in length under platform. At the bottom the cylinder tapers to 2 feet 8 inches in diameter. Under this there is a semispherical bottom to the boiler hinged and kept shut by a back-weighted lever and screws. On the top of each there is a semispherical cover and safety valve. “There is an iron crane and windlass for lifting off and on the covers. After the boilers are charged with diseased meat the covers are made secure and steam let into them near the bottom. There is a cock in the bottom of each for running off the liquid at certain stages into a trap grating in the floor under it, and conducted into a cement cistern outside of the boiling-house, from which it is periodically removed. Whether any use is made of the tallow produced I am not informed. The bones when removed are quite porous, of a very white colour, and nearly as light as cork. I presume that they will be sold for being converted into bone manure. I understand these large boilers are not very often used, and that a small close galvanized iron cylinder, 2 feet 9 inches in diameter, and 2 feet 6 inches high, placed 15 inches above the ground, having cock at bottom, steam pipe at side, and portable lid, does most of the work very efficiently.” (4.) _The pig-killing department._ This should be separate from the ordinary slaughter-house, as the styes for pigs must be differently arranged to the cattle lairs, and a boiler house is necessary, as boiling water must be had for scalding and dressing the carcasses. Special iron troughs with false bottoms have been arranged by Messrs. Meiklejon, which greatly facilitate this part of the butcher’s work, and simple hoisting apparatus over these troughs lifts the carcase in and out, and carries it off to the cooling or hanging room, which must of necessity be separate from the killing and scalding rooms. Drainage, lighting, ventilation and floors should be similar to those described for the slaughter-houses, and plenty of lime wash can be used with advantage here as well as in the main slaughter-house. (5.) _The blood house._ The blood of the slaughtered animals, which formerly was allowed to run away, has been found to contain a most valuable aniline dye, and for this purpose it is now collected and taken to the blood-houses, where in order to obtain this dye it is necessary to place the blood in shallow tins, where it is warmed by steam-pipes, the liquid is then drawn off, which is the albumen from which the dye is extracted, the residuum left in the trays is of the consistency of jelly, and is sold for manure. (6.) _The tripery._