It has been suggested to me, that I should give some receipts for the manufacture of the enamel colours used in mediA|val glass painting; I have therefore added a few which are easily prepared. Others of a more complicated nature had much better be obtained from the makers of the enamel used in porcelain painting. And here again, let me remark, that in ordering fluxes from these manufacturers, it should be stated especially that a flux is required which does not contain borax, nor should the painters in any establishment be allowed to use these softer fluxes, which they are almost certain to do, unless forbidden; for though they are easier to work with, they will infallibly lead to calamitous results. YELLOW. Oxide of tin 2 parts. Oxide of antimony 2 " Red Lead 16 " ORANGE. Red Lead 12 " Oxide of antimony 4 " Persulphate of iron 1 " Flint powder 3 " BROWN. Black oxide of manganese 2A.25 " Flint slate (powdered) 4A.0 " Red lead 8A.5 " BROWN RED. Crocus (oxide of iron) 3 " Green sulphate of iron (calcined) 1 " mixed with six parts of these No. 2. LIGHT RED FOR FLESH TINTS. Carbonate of lead 1A.5 " Persulphate of iron (calcined) 1 " Flint glass 3 " The use of enamels--that is, substances which impart various colours to the glass, when placed on its surface by their fusion--is not admissible in windows which pretend to belong to any of the earlier styles of glass painting; though enamel painting is used for the decoration of houses, and sometimes, as I consider very improperly, for the decoration of church windows. One sheet of glass, colourless and transparent, or it may have its surface ground, is usually employed. A subject is painted on it with enamel colours, much as subjects are painted upon porcelain. When the work is completed, the glass plate is fired, and thus the colours become semi-transparent, and perfectly adherent to the plate; but they are not clear and bright, and transparent, as are the colours of glass which is coloured in the pot, and therefore have not the same brilliancy, nor do they allow of the same bold and effective treatment. It is much to be desired that amateurs who can draw, and who have a feeling for this particular style of art, should devote a portion of their time to its execution. They will find it to be extremely agreeable and pleasant, and the few difficulties which they meet with in their first attempts will be readily overcome by perseverance, or by applying for assistance and advice to gentlemen engaged in the pursuit of this interesting profession.