be accomplished either by passing the wire from side to side, around the base of each upright wire, or an additional horizontal row of holes below the others may be punched for the purpose.  The door through which the call-bird is introduced should next be made in the bottom section.  There are two ways of doing this:  one method consists in sawing a hole three inches square in the bottom board of the cage; and a cover consisting of a piece of tin is made to slide beneath the heads of four tacks, two of which are placed on each side of the opening.  This form of door is perhaps the simplest of the two.  The other is shown separate at (f), together with its mode of attachment.

It consists of two side pieces of wood, about a third of an inch square, and three inches in length, and two shorter ones, two inches in length.  These are arranged into a square framework by a board in each corner.  Four holes are to be pierced in each side piece, at equal distances.  Commencing at the top, the door should then be wired as directed for the cage.  The lowest hole on each side should be left open for a separate piece of wire.  The cage should now receive attention.  The broad side is generally selected for the door.  Find the seven centre wires and connect them across the middle by another horizontal bit of wire.  This may be easily done with a pair of pincers, by compressing a loop at each end of the wire around the two which run perpendicularly at its ends.  When this is performed the five intermediate wires should be cut off about a quarter of an inch below the horizontal wire, and the projecting tips looped back over the cross piece, and made fast by the pincers.  The lower parts of the upright wires may now be cut off close to the board.  We will now take up the door.  Pass a piece of wire through the holes at the bottom, clap the door over the opening, and loop the ends of the projecting wire loosely around the upright wires at each side.  This will allow the door to slide easily up and down.  Another wire should now be interlaced downwards through the centre of the door, and bent into a ring at the top.  Let the door rest on the bottom of the cage, and, while in this position, adjust the ring at the top around the central wire directly behind it.  The door is then complete, and, if properly made, will look neat and work easily.

The “trap” at the top of the cage is next in order.  To complete this it is first necessary to interweave a stiff wire loop, as seen at (d).  The loop should extend on the inside of the lower piece of the door and about two inches below it.  The [Page 80] spring power consists of a piece of stiff hoop-skirt wire, interwoven between the wires of the top of the cage, and those of the door, while the latter is shut.  The force of this will be sufficient to bring down the door with a snap; and for further security a catch, such as is described in page (88), may be added if desired.