| Yellow resin | 36 | grains. |
| Yellow wax | 12 | " |
| Ether | 2 | ounces. |
Melt the wax, add the resin, stir together and then add the ether.
Pour a little of this mixture on to the temporary support and spread with a tuft of cotton wool, and rub over to make it even.
The final support for double transfer may be purchased, and is made ready for use by soaking for ten minutes in alum.
The temporary support, after being waxed and the waxing solution having become dry, is to take the place of the single transfer paper in every respect, and the film developed as already described. When it has reached the final washing, after the alum clearing bath, it is brought into contact with the final support (which has been for ten minutes in alum bath as just described) and is removed to the glass or zinc plate and squeegeed.
It is now hung up to dry, and when quite dry the blade of a knife should be inserted at one corner and the temporary support gently pulled off.
Such is the carbon process, neither difficult nor lengthy, and with this brief outline to form an introduction, the reader who is a tyro will the better appreciate the fuller description which follows.
Whilst the article that follows is more comprehensive than the beginner may require at first, he is nevertheless advised to read it carefully through, and some points which may not seem clear at first will explain themselves after a very little experience.