A composition in which to cast a panel (say) of birds, modelled in low relief, may consist of 71b. of glue, 31b. of resin, 1 1/2pt. of linseed oil, and about 2 1/2pt. of water. Steep the glue in water and melt in the usual way then melt the oil and resin separately, and pour into the glue. Next add well-powdered whiting till the mass is ot the consistency of thick dough, Well knead the mixture till the whole is smooth and plastic. Press the composition into the mould, which should first be well oiled. To extract the pressing from the mould, reverse the latter on a damp board, to which the composition will adhere, and so enable the mould to be pulled off. This composition sets extremely hard, and may be glued to any panel desired. Another suitable composition consists of fine glue;-! parts, isinglass 1 part, dissolved in water till the mixture, when cold, is like jelly. Gently heat this and mix with finely silted sawdust till the whole is sufficiently thick to be workable. Press the composition into the mould, place a weighted board over it, and set before the fire to harden and dry.