This method is employed with great success by a few, who have regarded it as a secret worth keeping.
A Combination, requiring the Use of only One Coating-box .-- It is often wondered by beginners, why some solution requiring only one coating cannot be employed.

This can be done, but the results are not so satisfactory as when two or more are employed.

Such an accelerator may be produced by adding alcoholic solution of iodine to a solution of chlorate of potash, until the latter will take up no more of the former, and to each ounce, by measure of this solution, ten drops of a saturated solution of bromide in water are added.

The solution of chlorate of potash is made by diluting, one part of a saturated solution of the salt with ten parts of water.

The use of the chlorate is simply as a solvent of iodine.
Fats as Accelerators .-- The use of fats, oils, or greasy substances, has been one of the most emphatic prohibitions about the Daguerreotype plate.