A fixture to hold this nozzle is shown in Fig. 3.  It was cast of babbitt metal in a wood mold.  The hole for the nozzle was drilled at an angle of 20 deg. to the plate part.  An alternative and perhaps easier way would be to insert the nozzle in the mold at the proper angle and cast the metal around it.  A hole was then cut in one of the sides of the casing at a point 2-7/8 in. along a horizontal line from the center.  The nozzle fixture was then bolted on with the exit orifice of the nozzle pointing downward and through the hole in the casing.

Six 1/8-in. holes were drilled through the flat portions of the rims while the two halves of the casing were held securely together in a vise.  Bolts were used in these holes to join the casing.

The wheel was used on the dripboard of a kitchen sink and no provision was made to carry off the spent water except to cut two 1/2-in. holes in the bottom of the casing and allowing the waste to flow off directly into the sink.  —­Contributed by Harry F. Lowe, Washington, D. C.

** Device for Baseball Throwing Practice [312]

Anyone training to be a baseball player will find the device shown in the accompanying illustration a great help

[Illustration:  Ball Bounding on Concrete Slabs]

when practicing alone.  It consists of two cement slabs, one flat and upright, the other curved and on the ground.  The vertical slab is fastened securely against a fence, barn or shed.  The barn or the shed is preferable, for if the slab is fastened to a fence, the ball will bound over a great many times and much time will be lost in finding it.

The player stands as far as he cares from the slabs and throws the ball against the lower slab.  The ball immediately rebounds to the upright slab and returns with almost as great a force as it was delivered.  If the thrower does not throw the ball exactly in the same spot each time, the ball will not rebound to the same place, consequently the eye and muscles are trained to act quickly, especially if the player stands within 15 or 20 ft. of the slabs and throws the ball with great force.

This apparatus also teaches a person to throw accurately, as a difference in aim of a few inches on the lower slab may cause the ball to flyaway over the player’s head on the rebound.  —­Contributed by F. L. Oilar, La Fayette, Indiana.

** How to Mail Photographs [312]

Cut a piece of cardboard 1 in. longer and 1 in. wider than the mount of the photograph and lay the picture on it in the center.  This allows a 1/2-in. border on all sides of the photograph.  Punch two holes 1 in. apart at A, B, C and D, Fig. 1, in the cardboard border close to the edge of the picture.  Put a string up through the hole B, Fig. 2, then across the corner of the photograph and down through the hole C and up through hole D, then to E, etc., until the starting point A is reached, and tie the ends.

The photograph will not get damaged, if it is covered with tissue paper and placed with the face to the cardboard.  The extension border of cardboard prevents the edges of the mount from being damaged and the corners