F. T. - " Acierage " is the practice of steeling a copper plate which has been etched, so as to produce from it a large number of good impressions. In the opinion of such experts as Sir Seymour Haden, it gives the print a dry and hard appearance.

H. B. - We know of no such preparation as you mention for making ordinary colours fast when applied to textiles.

H. K. - Your query is fully answered in the February issue of the Magazine, another subscriber having asked for the same information.

Subscriber

(!) If you are submitting designs for postcards intended to be reproduced in colours you should certainly colour them yourself. It is useless to send the work half done to a publisher. (2) It is advisable to make the drawing at least four times the size of the postcard. Naturally the dimensions must be in proportion to those of the postcard for which the drawing is ultimately to serve.

Milman

An excellent elementary book on perspective for outdoor sketching is " Perspective for Art Students," by R. G. Hatton, which contains over 200 diagrams. It is published at 5s., and may be obtained from B. T. Batsford, 94, High Holborn, London, for 3s. 9d. A more expensive work, which we can thoroughly recommend to both artists and students, is " Nature's Laws in the Making of Pictures," by W. L. Wyllie. It contains diagrams and illustrations by the author, and reproductions from the masters, especially chosen to elucidate the letterpress. The price is 15s. net.

Arachne

The book-cover design given last month (p. 149) may be worked solidly in gold, raised, as if embossed; or it may be treated flat, in coloured silks, on a light or a dark ground. The raising in the gold flower forms must be thickly padded and then worked over with fine gold, with a couched line of thick gold thread carried round the outlines. Very close pile silk velvet or rich watered silk may be used for the foundation. The spangles may be omitted. For flat silk embroidery, satin or corded silk would be appropriate, and gold thread should be used for the outlines.

T. D. - Unfortunately, the photograph from which Mr. Edwardes made his drawing, "Entrance to an Art Museum," is not available for publication, but we hope to find an early opportunity for carrying out your excellent suggestion.

S. H. - (1) We know of no such practical book as you want except " Modern Mural Decoration," by A. LysBaldry (George Newnes, Ltd., publishers), and the price (12s. 6d, net) is above your limit. You would do well, all the same, to consult it, if possible. (2) As soon as we can afford the space we shall publish some articles on various kinds of mural painting.

Replies toother Correspondents must stand over.