ted. The main difficulty is to secure an adequate water supply and to dispose of the waste water. At a small expenditure of money and energy it is easy, however, to rig up a contriv

hapter is that it can be moved without any troubl

asin. A secondhand article of this sort can be purchased for a shilling or two. A thoroughly sound specimen should be selected, even if it is n

-A home-made developing

y 15 inches; but if a stand of larger dimen

er container, should be of 1-inch stuff; and the two lower shelves be not more than 5 inches wide and 3/4 inch thick. Space the shelves at least 11 inches apart, so that they may accommodate tall bottles. The superstructure will gain in rigidity if the

corners is more difficult than the soldering of sheet zinc, which, though more liable to chemical corrosion, is much lighter than the thinnest lead-weighing about 1-1/2 lbs

ups a, a, b, b, should not be less than 1-1/2 inches wide. Allow half an inch at each end of b b for the turnover c. Turn a a up first, then b b, and finally bend c c round the back of a a, to which they are soldered.

-Showing how the tray f

being injured by the tray, the front should be covered by a 1/2-inch strip of zinc doubled lengt

is pad-sawed out of wood of the same thickness as the top, to which it is attached by crossbars on the under side. The who

ide, and drill a hole on the centre line to take a carpenter's screw. If the edges of the tray are supported on slats 3/16 to 1/4 inch thick, and its centre is kept in contact with the wood by the collar pr

g down between tray and wood, tack pieces of American cloth on the

er tank, so as to avoid any danger of overfilling. A piece of old cycle tyre tubing, tied to the waste pipe and long enough to reach below

ction, and a small tap at the bottom. This tap, when not in use, should be held back out of the way by a wire hook attache