Secure two clothes pins of the metal spring kind for the clamps of the hanger.  The pins are fastened one to each end of a looped galvanized wire.  This wire should be about 6 in. long after a coil is bent in the center as shown in the sketch.  The diameter of the wire should be about 1/8 in.

[Illustration:  Hanger]

** How to Make an Adjustable Negative Washer [143]

The sketch herewith shows a washing box for negatives made from an ordinary wooden box.  As can be seen, the grooved partition, A, is removable, and as several places are provided for

[Illustration:  Washing Box]

its insertion, the tank can be made to accommodate anyone of several sizes of plates, says Camera Craft.  The other stationary partition, B, which does not reach quite to the bottom of the tank, is placed immediately next to the end of the tank, leaving a channel between the two for the inflow of the wash water.  A narrow, thin strip, C, is fastened to the bottom of the tank to keep the plates slightly raised, at the same time allowing a clearer flow of the water from the bottom upwards to the discharge.

The water enters the narrow partition at the end, flows under the partitions B and A, then upward between and parallel to the surface of the plates, escaping at the opposite end over the top of the tank end, in which the upper part has been cut away for that purpose.  The depth of this cut, in the upper part of the tank end, should allow the overflow to be a trifle higher than the width of the largest size plate for which the tank is fitted.  Partition B being stationary, can be nailed in position permanently, allowing the bottom edge to clear the bottom of the tank the desired distance.  Partition A being movable should have attached to its bottom edge a couple of nails, D, or better still, wooden pegs, which will keep it also above the bottom of the tank at the desired height.

A coat of paraffin paint should be applied, and, just before it sets perfectly hard, any rough spots trimmed down with a knife or chisel and a second lighter coat applied.  If the wood is very dry and porous a preliminary coat of the paint should be applied and allowed to soak into the pores.  It is also well to apply a coat of the paint to the joints at the corners and around the edge of the bottom before nailing together.

** Turn-Down Shelf for a Small Space [144]

The average amateur photographer does not have very much space in which to do his work.  The kitchen is the room used ordinarily for finishing the photographs.  In many instances there will not be space enough for any extra tables, and so a temporary place is prepared from boxes or a chair on which to place the trays and chemicals.  Should there be space enough on one of the walls a shelf can be made to hang down out of the way when not in use.  A shelf constructed on this order may be of any length to suit the space or of such a length for the purpose intended.  A heavy piece of wood, about