The kind of cloth used for dioramas is called union j it is made in various sizes, and requires no preparation to receive the colours. The subject to be represented is first carefully drawn in outline with a pencil. Then mix some vandyke brown with hot double size, and with a fine brush go over the pencilled outline. When thoroughly dry, the painting of the picture may he proceeded with. Jelly size is the medium, about lqt. of water to a pound of size. Only transparent colours should be used, such as azure blue, celestial blue, indigo blue, damp lake, brown lake, Dutch pink, raw sienna, burnt sienna, Indian yellow, Indian red. vandyke brown, ivory black, blue or sky colour. Break up some whiting and cover with water. Take as much azure blue as is required for the sky colour, and make it into a paste with water, adding just enough whiting to make the blue flow evenly; the colour should he semi-transparent. Cover the whole of the picture with this colour, commencing at the top and working downwards. As the work proceeds the colour should be thinned with the medium, so that there may be a gradual change of tint from dark to light. All illuminated parts must be thinly covered. When this is dry, give the other portions of the picture their local colouring, and finish off.

If the other side of the picture is to represent moonlight, draw the moon with a fine line and slightly tint it with appropriate colour. For the dark parts of the sky, use celestial blue; for the dark clouds, indigo; and for very dark clouds, sadden with black. All trees and foliage should be treated in the same way; the buildings, etc., should be covered with a deepened local colour, especially in the dark parts and shadows. Windows and illuminated parts should be covered with Indian yellow for yellow lights, and with lakes for red lights such as a lire. The dioramic change is made by gradually turning down the light in front and turning it up at the back. The stronger the light the better will be the effect.