The best pigments for this work is for white; air slacked lime free from caustic action, so- called mild lime, or paris white. Yellow; raw sienna and the yellow ochres. Red; the red oxides of iron including the copperas reds. Green; green earth (terra verte), cobalt and true chrome greens. Blue; ultra marine and cobalt. Brown; the umbers; and for black; lamp black and ivory black.

The necessary colors for water color painting may be produced from yellow, red and blue. Almost all colors and shades can be produced by proper combinations. When brilliant colors are required, the yellow may be gamboge, red, carmine and the blue prussian; they are not permanent, however.

One part gamboge and one part carruine orange.

Two parts gamboge and one part prussian blue=yellow green.

One part gamboge and two parts prussian blue=blue green.

Two parts prussian blue and one part carmine = violet blue.

One part prussian blue and two parts car-mine=red.

By changing the proportions 3 to 1, other shades are produced, and by dilution with water, lighter tints are formed.

In decorating interiors, the principal color used should be one which lights up well. It need not necessarily be a light one.

Positive colors should not be placed side by side, but separated by white, black or gold. The same colors in different shades may be used one upon another. The primary colors, red, yellow and blue, should be used sparingly. Give preference to neutral tints without glaring contrasts.

Dull greens, grays, and browns may be allowed to predominate. Remember that colors on light grounds appear darker by contrast and the reverse on dark grounds. In relief work, the ground should appear darker than the relief, unless gold be used. Let one color predominate over another, and remember that colors have compliments which add to or detract from the beauty of the adjoining color. The compliment of red is green; blue, orange; yellow, violet. Good contrasts are black and warm brown; violet and pale green; violet and rose color; deep blue and golden brown; chocolate and light blue; deep red and grey; maroon and warm green; deep blue and pink; chocolate and pea green; maroon and chocolate; claret and buff; black and green. The colors should blend with the furniture and carpet. If pictures are to be hung, choose low toned neutral tints. This applies also to wall paper. If the room is to be furnished without pictures, a brilliant paper, rich in color, may be chosen with white or pearl wood work and soft, white draperies.