These should be separated from the slaughter-house by a smaller temporary lair in which the beast whose turn has come can be fastened to the halter by which he is dragged into the slaughter-house, the sides of the door-way being lined with iron for this purpose. The paving of the lairs may be of asphalte, but care must be taken that near the door of slaughter-house, the paving is of pitchers or something that is not at all slippery, as here the frightened beast often struggles and draws back when he sees the “engines of destruction” in the slaughter-house, and smells the blood of those who have gone before. The lairs must be thoroughly well drained, lighted, and ventilated, and troughs for hay and water placed for each beast, for although the animals are not expected to remain long in the lairs before being killed, still it is very important that they should be well and kindly treated, and rest, so that they may obtain their normal condition before being killed. A door easily closed should shut off the lair from the slaughter-house, as it is open to question, if animals do not see with fear the hapless fate of their comrades; for this and other obvious reasons the animals must on no account be permitted to pass through the slaughter-house to reach the lair. The lairs should be well lighted artificially, as a great deal of slaughtering is conducted before and after daylight. (2.) _The slaughter-houses._ These may be separate or in one long building used in common by the butchers; both systems have their advantages and disadvantages. The long building has the advantage of greater economy in erection and of management, as one inspector can see from end to end of it. Where also a large site is not available greater advantage can be taken of a slaughter-house erected on this plan, as several butchers can slaughter in turn; the lairs, however, must be kept separate. The butchers do not like this plan, but prefer privacy, and a great deal of “horse play” is sometimes indulged in by the slaughtermen at work in a large building. The method of payment for the use of a slaughter-house of this description cannot well be by rent, but by head of animal slaughtered, and this is open to the objection of possible fraud. It is necessary also to have separate slaughter-houses for the sheep and the pigs. Whether the slaughter-houses are constructed separately or in one long building, the detail requirements are much the same. The pavement of the floor should be placed on concrete and it should be constructed of some material that is easily cleansed, is impervious to moisture, and is not slippery either wet or dry. It must also be of sufficient durability, and be strong enough to bear the weight of the dead-meat carts which have to back in over it under the beams carrying the carcasses, should there be no dead meat market in connection with the slaughter-house as at Manchester, Dundee, &c.