holes with the exception of one, and let them use that one for two nights.  Then put a plateful of good food, such as oatmeal and oil of aniseed, as far from the hole as you can in the same kitchen; then run a small train of meal and aniseed from the hole to the plate.  Next drive two six-inch nails in the wall, with a long piece of string tied to the nail heads.  Put on these nails a brick or piece of board right above the hole 2 inches up the wall.  Be sure the nails are quite loose in the wall over the hole, and leave in that position for two nights, so that the Rats will get used to it.  On the night that you are going to catch them, before leaving the place carry the string from the nail heads to the door or window; let the door or window be closed within an inch, with the end of the string outside.  After the place has been quiet for thirty minutes return to the door or window very quietly, and you will hear the Rats feeding.  Pull the string, the loose nails come out of the wall and the brick or board drops over the hole.  You can then go in, close the door, turn up the gas and catch or kill them at your leisure, as they cannot get back again.

By this method I may mention that I have caught a great number of Rats, and it is quite possible to clear a place in this manner:  that is, if they do not come out of the drains.  I have caught upwards of 103 in six nights in this way.  The best time to catch Rats in any building is always at night, and always about half-an-hour after the place has been closed, as Rats are generally more adventurous to come for their first feed.  Always go about as quietly as possible.

In some of the very old Manchester buildings that were built in the days before drain plans had to be submitted to the corporation, one finds under the cellar floors old-fashioned brick and flag drains (better known as “spit” drains), that were left in when the place was built.  Once the Rats get in these disused drains all the professional Rat-catchers in England could not clear them without pulling the building down.  The Rats have, by some means, got out of the main sewer, probably by the bursting of a sewer into one of these disused dry brick drains.  It is then impossible to get underground to see where they have got into the dry drain, and the only thing that can be done in a case of this sort is to engage a professional Rat-catcher occasionally, and keep two or three good cats to keep the Rats down.  These places as a rule are more plagued with them when it is very wet weather and there are floods running.  This is the best time to catch them, as they are all under the floor of the building, and are very easy to catch in the night with the traps.

As a rule the Black or Drain Rats feed only in the night, very rarely in the day, as they are of a dirty nature, and prefer being in the drains.  In my opinion the Black Rat is more vicious than the Brown.

There is another Rat I call the Red Rat, which is akin to the Brown Rat.  You will always catch these at a tannery, or about kennels, where hounds are kept, and they generally feed on horseflesh or offal.  Red Rats are the “gameist” Rats I know, for whatever kind of Rats are put into the store cage, these Red Rats kill them the first night they are left quiet.