Page:Treatise on Soap Making.djvu/23

 had an opportunity of being properly instructed in the fundamental principles of Soap-making.

These principles the Author considers to be a thorough knowledge of the nature and qualities of the original materials, leys, &c. used in the manufactory. It may in general be observed, that all bodies possessing a fixed alkaline salt, may be rendered useful in the making of Soap; but the chief, and what is commonly resorted to, are the following, viz. and St and  &c.; with a short Account of which, from the best authorities, we shall commence this Treatise, and conclude the whole with a brief Dissertation on Spoiled Hard Soap, &c.