OTHER ARTICLES.
The next requirement is some gum solu tion, which may easily be made by dis solving a few clear and clean lumps of gum arabic in warm water. The gum should be to begin with, or, failing this, a bromide, which will probably be the easiest to obtain of a suitable size, although the grey tone is a little trying to the colourist at first. A 12 in. by 10 in. bromide, preferably a contact print, will answer well. Choose one in which the gradation is good. It should be full of detail, soft, and yet with good contrast. In short, the more perfect the picture, the better the result. Heavy masses of shadow and bald patches devoid of detail cannot be treated effectively. The printing should not be too dark or heavy, hut only just dark enough to show the detail in the high lights clearly. An other print will be required as a guide. This need not be of the same size, but must be the same picture, and should be much darker than the one being Worked upon. so that in the coloured mint there
allowed to soak for some time, if possible, at a gentle heat, such as may be obtained by placing the vessel on the hob, not too near the fire. It must be stirred occasion ally, and, when practically all dissolved, is strained through muslin to remove any lumps or grit. There will be needed a china palette about S in. by 5 in. ; one or two porcelain trays of the form shown in Fig. 474, which are used for holding washes of light tints ; a little powdered pumice ; a clean piece of rag for wiping out, trying brushes on, etc. ; a few paper stumps ; and some ox-gall, in either liquid or solid form, the former being the more convenient.