Page:Treatise on Soap Making.djvu/99

83 the pan, every boil should particularly be observed, and the difference noted between the boil when the soap is right, and when it is wrong; how it boils when half made, when three-fourths made, and in an especial manner at the finishing. These observations made with precaution, will, with a short practice, render the operation familiar, and the workman complete master of his trade.

We shall add a few more general observations, necessary to be well studied, and rendered familiar to the operator.

To know when the soap wants, or has got too much leys, observe the following directions. Take about the size of a pigeon-egg of the soap, while hot, and put it upon the delft. Observe if whitish streaks and specks plainly appear, and continues so after the soap grows pretty cold. When this happens, the soap has got enough of