The Roof.—­The boards of this are attached to a frame which fits closely inside the tops of the sides, back, and front.  To get the fit of the frame correct, it must be made a bit too wide in the first instance, and then be bevelled off at the front, as shown in Fig. 23, and the reverse way at the back.  The ends are notched for the stays aa, and the frame then tacked firmly, by driving nails into the sides, etc., below it, in the position which it will occupy when the roof is on, except that it projects upwards a little.  Cut off twenty-five boards 3 feet 7 inches long.  Omitting the end ones for the present, lay the remainder up to one another in order, their ends an equal distance from the frame, and nail to the frame.  Lift off the roof, insert and secure aaaa, and nail on the end boards.  Then rule parallel straight lines 3 feet 6 inches apart across all the boards from end to end of the roof, and cut along these lines.  The roof is replaced after notches have been cut in the tops of the sides to take aaaa, and secured to the vertical parts by six bolts, the positions of which are shown in Fig. 24.

[Illustration:  Fig. 24.—­Top of cycle shed.  Fig. 25.—­Floor of shed.]

The Floor (Fig. 25).—­The making of this is so simple a matter that one need only point out the need for notching the end boards to allow the floor to touch the sides and back, and the doors when closed.  It should be screwed to the frames, on which it rests, in a few places.

Preserving the Wood.—­All outside wood is dressed with stoprot or creosote, rubbed well into the joints of the boarding.

Felting the Roof.—­The felt is cut into 4-foot lengths, and each length has its ends turned over and nailed to the underside of the roof.  The strips must overlap an inch or two.  When the felt is on, dress it with boiled tar, and sprinkle sand over it while the tar is still liquid.

Fitting.—­The two bolts to hold one door top and bottom and the lock are now fitted, and a couple of hooks screwed into the door frame clear of the door, to sling a machine from while it is being cleaned or adjusted.

Mounting the Shed.—­The shed must be raised a few inches above the ground, on bricks or other suitable supports.  Don’t stand it close to a wall.  Air should be able to circulate freely under and all round it.

CUTTING DOWN EXPENSE.

If the cost appears prohibitive, it may be reduced somewhat (1) by using thinner boards; (2) by reducing the height of the shed by 1 foot.  A very cheap shed, but of course not comparable in quality with the one described, can be made by using odd rough boards for the outside, and covering them with roofing felt well tarred.

VIII.  A TARGET APPARATUS FOR RIFLE SHOOTING.

The base is a 1-inch board, 18 inches long and 7 inches wide.