For most daguerreotype purposes, the syrup may be at once evaporated to dryness.

This is frequently placed in the iodine coating box for the purpose of keeping the atmosphere dry.

It is so easily made that every operator can provide himself with it in a short time, and at little expense.
Chloride of Gold .-- Is prepared by dissolving gold in aqua regia, a composition of one part of nitric to two parts of muriatic acid.

Gold foil is the best for our purposes; coin, however, answers, in most cases, for the daguerreotype operator, as the alloy, being so slight is not noticed in the gilding process.

When the latter is used, it will facilitate the operation to beat it out, forming a thin sheet, and then cutting in small strips.